Merge pull request #1673 from arrufat/mcp

Add Model Context Protocol (MCP) server support

.github/actions/install/action.yml

@@ -2,10 +2,6 @@ name: "Browsercore install"
 description: "Install deps for the project browsercore"
 
 inputs:
-  zig:
-    description: 'Zig version to install'
-    required: false
-    default: '0.14.1'
   arch:
     description: 'CPU arch used to select the v8 lib'
     required: false
@@ -17,15 +13,19 @@ inputs:
   zig-v8:
     description: 'zig v8 version to install'
     required: false
-    default: 'v0.1.24'
+    default: 'v0.3.1'
   v8:
     description: 'v8 version to install'
     required: false
-    default: '13.6.233.8'
+    default: '14.0.365.4'
   cache-dir:
     description: 'cache dir to use'
     required: false
     default: '~/.cache'
+  debug:
+    description: 'enable v8 pre-built debug version, only available for linux x86_64'
+    required: false
+    default: 'false'
 
 runs:
   using: "composite"
@@ -36,11 +36,13 @@ runs:
       shell: bash
       run: |
         sudo apt-get update
-        sudo apt-get install -y wget xz-utils python3 ca-certificates git pkg-config libglib2.0-dev gperf libexpat1-dev cmake clang
+        sudo apt-get install -y wget xz-utils ca-certificates clang make git
 
+    # Zig version used from the `minimum_zig_version` field in build.zig.zon
     - uses: mlugg/setup-zig@v2
-      with:
-        version: ${{ inputs.zig }}
+
+    # Rust Toolchain for html5ever
+    - uses: dtolnay/rust-toolchain@stable
 
     - name: Cache v8
       id: cache-v8
@@ -49,32 +51,17 @@ runs:
         cache-name: cache-v8
       with:
         path: ${{ inputs.cache-dir }}/v8
-        key: libc_v8_${{ inputs.v8 }}_${{ inputs.os }}_${{ inputs.arch }}_${{ inputs.zig-v8 }}.a
+        key: libc_v8_${{ inputs.v8 }}_${{ inputs.os }}_${{ inputs.arch }}_${{ inputs.zig-v8 }}${{inputs.debug == 'true' && '_debug' || '' }}.a
 
     - if: ${{ steps.cache-v8.outputs.cache-hit != 'true' }}
       shell: bash
       run: |
         mkdir -p ${{ inputs.cache-dir }}/v8
 
-        wget -O ${{ inputs.cache-dir }}/v8/libc_v8.a https://github.com/lightpanda-io/zig-v8-fork/releases/download/${{ inputs.zig-v8 }}/libc_v8_${{ inputs.v8 }}_${{ inputs.os }}_${{ inputs.arch }}.a
+        wget -O ${{ inputs.cache-dir }}/v8/libc_v8.a https://github.com/lightpanda-io/zig-v8-fork/releases/download/${{ inputs.zig-v8 }}/libc_v8_${{ inputs.v8 }}_${{ inputs.os }}_${{ inputs.arch }}${{inputs.debug == 'true' && '_debug' || '' }}.a
 
     - name: install v8
       shell: bash
       run: |
-        mkdir -p v8/out/${{ inputs.os }}/debug/obj/zig/
-        ln -s ${{ inputs.cache-dir }}/v8/libc_v8.a v8/out/${{ inputs.os }}/debug/obj/zig/libc_v8.a
-
-        mkdir -p v8/out/${{ inputs.os }}/release/obj/zig/
-        ln -s ${{ inputs.cache-dir }}/v8/libc_v8.a v8/out/${{ inputs.os }}/release/obj/zig/libc_v8.a
-
-    - name: libiconv
-      shell: bash
-      run: make install-libiconv
-
-    - name: build mimalloc
-      shell: bash
-      run: make install-mimalloc
-
-    - name: build netsurf
-      shell: bash
-      run: make install-netsurf
+        mkdir -p v8
+        ln -s ${{ inputs.cache-dir }}/v8/libc_v8.a v8/libc_v8${{inputs.debug == 'true' && '_debug' || '' }}.a

.github/workflows/build.yml

@@ -5,8 +5,12 @@ env:
   AWS_SECRET_ACCESS_KEY: ${{ secrets.NIGHTLY_BUILD_AWS_SECRET_ACCESS_KEY }}
   AWS_BUCKET: ${{ vars.NIGHTLY_BUILD_AWS_BUCKET }}
   AWS_REGION: ${{ vars.NIGHTLY_BUILD_AWS_REGION }}
+  RELEASE: ${{ github.ref_type == 'tag' && github.ref_name || 'nightly' }}
 
 on:
+  push:
+    tags:
+      - '*'
   schedule:
     - cron: "2 2 * * *"
 
@@ -23,10 +27,10 @@ jobs:
       OS: linux
 
     runs-on: ubuntu-22.04
-    timeout-minutes: 15
+    timeout-minutes: 20
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           # fetch submodules recusively, to get zig-js-runtime submodules also.
@@ -37,8 +41,11 @@ jobs:
           os: ${{env.OS}}
           arch: ${{env.ARCH}}
 
+      - name: v8 snapshot
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast snapshot_creator -- src/snapshot.bin
+
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dsnapshot_path=../../snapshot.bin -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -53,15 +60,16 @@ jobs:
         with:
           allowUpdates: true
           artifacts: lightpanda-${{ env.ARCH }}-${{ env.OS }}
-          tag: nightly
+          tag: ${{ env.RELEASE }}
+          makeLatest: true
 
   build-linux-aarch64:
     env:
       ARCH: aarch64
       OS: linux
 
-    runs-on: ubuntu-24.04-arm
-    timeout-minutes: 15
+    runs-on: ubuntu-22.04-arm
+    timeout-minutes: 20
 
     steps:
       - uses: actions/checkout@v4
@@ -75,8 +83,11 @@ jobs:
           os: ${{env.OS}}
           arch: ${{env.ARCH}}
 
+      - name: v8 snapshot
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast snapshot_creator -- src/snapshot.bin
+
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dsnapshot_path=../../snapshot.bin -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dcpu=generic -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -91,15 +102,18 @@ jobs:
         with:
           allowUpdates: true
           artifacts: lightpanda-${{ env.ARCH }}-${{ env.OS }}
-          tag: nightly
+          tag: ${{ env.RELEASE }}
+          makeLatest: true
 
   build-macos-aarch64:
     env:
       ARCH: aarch64
       OS: macos
 
-    runs-on: macos-latest
-    timeout-minutes: 15
+    # macos-14 runs on arm CPU. see
+    # https://github.com/actions/runner-images?tab=readme-ov-file
+    runs-on: macos-14
+    timeout-minutes: 20
 
     steps:
       - uses: actions/checkout@v4
@@ -113,8 +127,11 @@ jobs:
           os: ${{env.OS}}
           arch: ${{env.ARCH}}
 
+      - name: v8 snapshot
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast snapshot_creator -- src/snapshot.bin
+
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dsnapshot_path=../../snapshot.bin -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -129,15 +146,16 @@ jobs:
         with:
           allowUpdates: true
           artifacts: lightpanda-${{ env.ARCH }}-${{ env.OS }}
-          tag: nightly
+          tag: ${{ env.RELEASE }}
+          makeLatest: true
 
   build-macos-x86_64:
     env:
       ARCH: x86_64
       OS: macos
 
-    runs-on: macos-13
-    timeout-minutes: 15
+    runs-on: macos-14-large
+    timeout-minutes: 20
 
     steps:
       - uses: actions/checkout@v4
@@ -151,8 +169,11 @@ jobs:
           os: ${{env.OS}}
           arch: ${{env.ARCH}}
 
+      - name: v8 snapshot
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast snapshot_creator -- src/snapshot.bin
+
       - name: zig build
-        run: zig build --release=safe -Doptimize=ReleaseSafe -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dsnapshot_path=../../snapshot.bin -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: Rename binary
         run: mv zig-out/bin/lightpanda lightpanda-${{ env.ARCH }}-${{ env.OS }}
@@ -167,4 +188,5 @@ jobs:
         with:
           allowUpdates: true
           artifacts: lightpanda-${{ env.ARCH }}-${{ env.OS }}
-          tag: nightly
+          tag: ${{ env.RELEASE }}
+          makeLatest: true

.github/workflows/e2e-integration-test.yml

@@ -0,0 +1,68 @@
+name: e2e-integration-test
+
+env:
+  LIGHTPANDA_DISABLE_TELEMETRY: true
+
+on:
+  schedule:
+    - cron: "4 4 * * *"
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  zig-build-release:
+    name: zig build release
+
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    # Don't run the CI with draft PR.
+    if: github.event.pull_request.draft == false
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          # fetch submodules recusively, to get zig-js-runtime submodules also.
+          submodules: recursive
+
+      - uses: ./.github/actions/install
+
+      - name: zig build release
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+
+      - name: upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: lightpanda-build-release
+          path: |
+            zig-out/bin/lightpanda
+          retention-days: 1
+
+  demo-scripts:
+    name: demo-integration-scripts
+    needs: zig-build-release
+
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: 'lightpanda-io/demo'
+          fetch-depth: 0
+
+      - run: npm install
+
+      - name: download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: lightpanda-build-release
+
+      - run: chmod a+x ./lightpanda
+
+      - name: run end to end integration tests
+        run: |
+          ./lightpanda serve --log_level error & echo $! > LPD.pid
+          go run integration/main.go
+          kill `cat LPD.pid`

.github/workflows/e2e-test.yml

@@ -45,8 +45,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
 
+    # Don't run the CI with draft PR.
+    if: github.event.pull_request.draft == false
+
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           # fetch submodules recusively, to get zig-js-runtime submodules also.
@@ -55,7 +58,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build release
-        run: zig build -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
 
       - name: upload artifact
         uses: actions/upload-artifact@v4
@@ -65,56 +68,6 @@ jobs:
             zig-out/bin/lightpanda
           retention-days: 1
 
-  puppeteer-perf:
-    name: puppeteer-perf
-    needs: zig-build-release
-
-    env:
-      MAX_MEMORY: 30000
-      MAX_AVG_DURATION: 24
-      LIGHTPANDA_DISABLE_TELEMETRY: true
-
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          repository: 'lightpanda-io/demo'
-          fetch-depth: 0
-
-      - run: npm install
-
-      - name: download artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: lightpanda-build-release
-
-      - run: chmod a+x ./lightpanda
-
-      - name: run puppeteer
-        run: |
-          python3 -m http.server 1234 -d ./public & echo $! > PYTHON.pid
-          ./lightpanda serve & echo $! > LPD.pid
-          RUNS=100 npm run bench-puppeteer-cdp > puppeteer.out || exit 1
-          cat /proc/`cat LPD.pid`/status |grep VmHWM|grep -oP '\d+' > LPD.VmHWM
-          kill `cat LPD.pid` `cat PYTHON.pid`
-
-      - name: puppeteer result
-        run: cat puppeteer.out
-
-      - name: memory regression
-        run: |
-          export LPD_VmHWM=`cat LPD.VmHWM`
-          echo "Peak resident set size: $LPD_VmHWM"
-          test "$LPD_VmHWM" -le "$MAX_MEMORY"
-
-      - name: duration regression
-        run: |
-          export PUPPETEER_AVG_DURATION=`cat puppeteer.out|grep 'avg run'|sed 's/avg run duration (ms) //'`
-          echo "puppeteer avg duration: $PUPPETEER_AVG_DURATION"
-          test "$PUPPETEER_AVG_DURATION" -le "$MAX_AVG_DURATION"
-
   demo-scripts:
     name: demo-scripts
     needs: zig-build-release
@@ -140,15 +93,47 @@ jobs:
       - name: run end to end tests
         run: |
           ./lightpanda serve & echo $! > LPD.pid
-          go run runner/main.go --verbose
+          go run runner/main.go
           kill `cat LPD.pid`
 
+      - name: build proxy
+        run: |
+          cd proxy
+          go build
+
+      - name: run end to end tests through proxy
+        run: |
+          ./proxy/proxy & echo $! > PROXY.id
+          ./lightpanda serve --http_proxy 'http://127.0.0.1:3000' & echo $! > LPD.pid
+          go run runner/main.go
+          kill `cat LPD.pid` `cat PROXY.id`
+
+      - name: run request interception through proxy
+        run: |
+          export PROXY_USERNAME=username PROXY_PASSWORD=password
+          ./proxy/proxy & echo $! > PROXY.id
+          ./lightpanda serve & echo $! > LPD.pid
+          URL=https://demo-browser.lightpanda.io/campfire-commerce/ node puppeteer/proxy_auth.js
+          BASE_URL=https://demo-browser.lightpanda.io/ node playwright/proxy_auth.js
+          kill `cat LPD.pid` `cat PROXY.id`
+
   cdp-and-hyperfine-bench:
     name: cdp-and-hyperfine-bench
     needs: zig-build-release
 
-    # Don't execute on PR
-    if: github.event_name != 'pull_request'
+    env:
+      MAX_VmHWM: 28000 # 28MB (KB)
+      MAX_CG_PEAK: 8000 # 8MB (KB)
+      MAX_AVG_DURATION: 17
+      LIGHTPANDA_DISABLE_TELEMETRY: true
+
+      # How to give cgroups access to the user actions-runner on the host:
+      # $ sudo apt install cgroup-tools
+      # $ sudo chmod o+w /sys/fs/cgroup/cgroup.procs
+      # $ sudo mkdir -p /sys/fs/cgroup/actions-runner
+      # $ sudo chown -R actions-runner:actions-runner /sys/fs/cgroup/actions-runner
+      CG_ROOT: /sys/fs/cgroup
+      CG: actions-runner/lpd_${{ github.run_id }}_${{ github.run_attempt }}
 
     # use a self host runner.
     runs-on: lpd-bench-hetzner
@@ -174,23 +159,67 @@ jobs:
           go run ws/main.go & echo $! > WS.pid
           sleep 2
 
+      - name: run lightpanda in cgroup
+        run: |
+          if [ ! -f /sys/fs/cgroup/cgroup.controllers ]; then
+            echo "cgroup v2 not available: /sys/fs/cgroup/cgroup.controllers missing"
+            exit 1
+          fi
+
+          mkdir -p $CG_ROOT/$CG
+          cgexec -g memory:$CG ./lightpanda serve & echo $! > LPD.pid
+
+          sleep 2
+
       - name: run puppeteer
         run: |
-          ./lightpanda serve & echo $! > LPD.pid
-          sleep 2
           RUNS=100 npm run bench-puppeteer-cdp > puppeteer.out || exit 1
           cat /proc/`cat LPD.pid`/status |grep VmHWM|grep -oP '\d+' > LPD.VmHWM
           kill `cat LPD.pid`
 
+          PID=$(cat LPD.pid)
+          while kill -0 $PID 2>/dev/null; do
+            sleep 1
+          done
+          if [ ! -f $CG_ROOT/$CG/memory.peak ]; then
+            echo "memory.peak not available in $CG"
+            exit 1
+          fi
+          cat $CG_ROOT/$CG/memory.peak > LPD.cg_mem_peak
+
       - name: puppeteer result
         run: cat puppeteer.out
 
+      - name: cgroup memory regression
+        run: |
+          PEAK_BYTES=$(cat LPD.cg_mem_peak)
+          PEAK_KB=$((PEAK_BYTES / 1024))
+          echo "memory.peak_bytes=$PEAK_BYTES"
+          echo "memory.peak_kb=$PEAK_KB"
+          test "$PEAK_KB" -le "$MAX_CG_PEAK"
+
+      - name: virtual memory regression
+        run: |
+          export LPD_VmHWM=`cat LPD.VmHWM`
+          echo "Peak resident set size: $LPD_VmHWM"
+          test "$LPD_VmHWM" -le "$MAX_VmHWM"
+
+      - name: cleanup cgroup
+        run: rmdir $CG_ROOT/$CG
+
+      - name: duration regression
+        run: |
+          export PUPPETEER_AVG_DURATION=`cat puppeteer.out|grep 'avg run'|sed 's/avg run duration (ms) //'`
+          echo "puppeteer avg duration: $PUPPETEER_AVG_DURATION"
+          test "$PUPPETEER_AVG_DURATION" -le "$MAX_AVG_DURATION"
+
       - name: json output
         run: |
           export AVG_DURATION=`cat puppeteer.out|grep 'avg run'|sed 's/avg run duration (ms) //'`
           export TOTAL_DURATION=`cat puppeteer.out|grep 'total duration'|sed 's/total duration (ms) //'`
           export LPD_VmHWM=`cat LPD.VmHWM`
-          echo "{\"duration_total\":${TOTAL_DURATION},\"duration_avg\":${AVG_DURATION},\"mem_peak\":${LPD_VmHWM}}" > bench.json
+          export LPD_CG_PEAK_KB=$(( $(cat LPD.cg_mem_peak) / 1024 ))
+          echo "{\"duration_total\":${TOTAL_DURATION},\"duration_avg\":${AVG_DURATION},\"mem_peak\":${LPD_VmHWM},\"cg_mem_peak\":${LPD_CG_PEAK_KB}}" > bench.json
           cat bench.json
 
       - name: run hyperfine
@@ -242,3 +271,19 @@ jobs:
 
       - name: format and send json result
         run: /perf-fmt hyperfine ${{ github.sha }} hyperfine.json
+
+  browser-fetch:
+    name: browser fetch
+    needs: zig-build-release
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: lightpanda-build-release
+
+      - run: chmod a+x ./lightpanda
+
+      - run: ./lightpanda fetch https://demo-browser.lightpanda.io/campfire-commerce/

.github/workflows/wpt.yml

@@ -5,6 +5,7 @@ env:
   AWS_SECRET_ACCESS_KEY: ${{ secrets.LPD_PERF_AWS_SECRET_ACCESS_KEY }}
   AWS_BUCKET: ${{ vars.LPD_PERF_AWS_BUCKET }}
   AWS_REGION: ${{ vars.LPD_PERF_AWS_REGION }}
+  LIGHTPANDA_DISABLE_TELEMETRY: true
 
 on:
   schedule:
@@ -14,14 +15,14 @@ on:
   workflow_dispatch:
 
 jobs:
-  wpt:
-    name: web platform tests json output
+  wpt-build-release:
+    name: zig build release
 
     runs-on: ubuntu-latest
-    timeout-minutes: 90
+    timeout-minutes: 15
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           # fetch submodules recusively, to get zig-js-runtime submodules also.
@@ -29,8 +30,85 @@ jobs:
 
       - uses: ./.github/actions/install
 
-      - name: json output
-        run: zig build wpt -- --json > wpt.json
+      - name: zig build release
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8.a -Doptimize=ReleaseFast -Dcpu=x86_64 -Dgit_commit=$(git rev-parse --short ${{ github.sha }})
+
+      - name: upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: lightpanda-build-release
+          path: |
+            zig-out/bin/lightpanda
+          retention-days: 1
+
+  wpt-build-runner:
+    name: build wpt runner
+
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          repository: 'lightpanda-io/demo'
+          fetch-depth: 0
+
+      - run: |
+          cd ./wptrunner
+          CGO_ENABLED=0 go build
+
+      - name: upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: wptrunner
+          path: |
+            wptrunner/wptrunner
+          retention-days: 1
+
+  run-wpt:
+    name: web platform tests json output
+    needs:
+      - wpt-build-release
+      - wpt-build-runner
+
+    # use a self host runner.
+    runs-on: lpd-bench-hetzner
+    timeout-minutes: 120
+
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: fork
+          repository: 'lightpanda-io/wpt'
+          fetch-depth: 0
+
+      # The hosts are configured manually on the self host runner.
+      # - name: create custom hosts
+      #   run: ./wpt make-hosts-file | sudo tee -a /etc/hosts
+
+      - name: generate manifest
+        run: ./wpt manifest
+
+      - name: download lightpanda release
+        uses: actions/download-artifact@v4
+        with:
+          name: lightpanda-build-release
+
+      - run: chmod a+x ./lightpanda
+
+      - name: download wptrunner
+        uses: actions/download-artifact@v4
+        with:
+          name: wptrunner
+
+      - run: chmod a+x ./wptrunner
+
+      - name: run test with json output
+        run: |
+          ./wpt serve 2> /dev/null & echo $! > WPT.pid
+          sleep 10s
+          ./wptrunner -lpd-path ./lightpanda -json -concurrency 1 > wpt.json
+          kill `cat WPT.pid`
 
       - name: write commit
         run: |
@@ -47,7 +125,7 @@ jobs:
 
   perf-fmt:
     name: perf-fmt
-    needs: wpt
+    needs: run-wpt
 
     runs-on: ubuntu-latest
     timeout-minutes: 15

.github/workflows/zig-fmt.yml

@@ -1,8 +1,5 @@
 name: zig-fmt
 
-env:
-  ZIG_VERSION: 0.14.1
-
 on:
   pull_request:
 
@@ -32,14 +29,13 @@ jobs:
     timeout-minutes: 15
 
     steps:
-      - uses: mlugg/setup-zig@v2
-        with:
-          version: ${{ env.ZIG_VERSION }}
-
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
+      # Zig version used from the `minimum_zig_version` field in build.zig.zon
+      - uses: mlugg/setup-zig@v2
+
       - name: Run zig fmt
         id: fmt
         run: |
@@ -58,6 +54,7 @@ jobs:
           fi
 
           echo "${delimiter}" >> "${GITHUB_OUTPUT}"
+
       - name: Fail the job
         if: steps.fmt.outputs.zig_fmt_errs != ''
         run: exit 1

.github/workflows/zig-test.yml

@@ -12,8 +12,7 @@ on:
       - main
     paths:
       - "build.zig"
-      - "src/**/*.zig"
-      - "src/*.zig"
+      - "src/**"
       - "vendor/zig-js-runtime"
       - ".github/**"
       - "vendor/**"
@@ -38,11 +37,9 @@ on:
   workflow_dispatch:
 
 jobs:
-  zig-build-dev:
-    name: zig build dev
-
-    # Don't run the CI with draft PR.
-    if: github.event.pull_request.draft == false
+  zig-test-debug:
+    name: zig test using v8 in debug mode
+    timeout-minutes: 15
 
     runs-on: ubuntu-latest
 
@@ -54,36 +51,11 @@ jobs:
           submodules: recursive
 
       - uses: ./.github/actions/install
-
-      - name: zig build debug
-        run: zig build
-
-      - name: upload artifact
-        uses: actions/upload-artifact@v4
         with:
-          name: lightpanda-build-dev
-          path: |
-            zig-out/bin/lightpanda
-          retention-days: 1
+          debug: true
 
-  browser-fetch:
-    name: browser fetch
-    needs: zig-build-dev
-
-    # Don't run the CI with draft PR.
-    if: github.event.pull_request.draft == false
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: download artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: lightpanda-build-dev
-
-      - run: chmod a+x ./lightpanda
-
-      - run: ./lightpanda fetch https://httpbin.io/xhr/get
+      - name: zig build test
+        run: zig build -Dprebuilt_v8_path=v8/libc_v8_debug.a -Dtsan=true test
 
   zig-test:
     name: zig test
@@ -104,7 +76,7 @@ jobs:
       - uses: ./.github/actions/install
 
       - name: zig build test
-        run: zig build test -- --json > bench.json
+        run: METRICS=true zig build -Dprebuilt_v8_path=v8/libc_v8.a test > bench.json
 
       - name: write commit
         run: |

.gitignore

@@ -1,7 +1,6 @@
-zig-cache
 /.zig-cache/
+/.lp-cache/
 zig-out
-/vendor/netsurf/out
-/vendor/libiconv/
 lightpanda.id
-/v8/
+/src/html5ever/target/
+src/snapshot.bin

.gitmodules

@@ -1,21 +0,0 @@
-[submodule "vendor/netsurf/libwapcaplet"]
-	path = vendor/netsurf/libwapcaplet
-	url = https://github.com/lightpanda-io/libwapcaplet.git/
-[submodule "vendor/netsurf/libparserutils"]
-	path = vendor/netsurf/libparserutils
-	url = https://github.com/lightpanda-io/libparserutils.git/
-[submodule "vendor/netsurf/libdom"]
-	path = vendor/netsurf/libdom
-	url = https://github.com/lightpanda-io/libdom.git/
-[submodule "vendor/netsurf/share/netsurf-buildsystem"]
-	path = vendor/netsurf/share/netsurf-buildsystem
-	url = https://source.netsurf-browser.org/buildsystem.git
-[submodule "vendor/netsurf/libhubbub"]
-	path = vendor/netsurf/libhubbub
-	url = https://github.com/lightpanda-io/libhubbub.git/
-[submodule "tests/wpt"]
-	path = tests/wpt
-	url = https://github.com/lightpanda-io/wpt
-[submodule "vendor/mimalloc"]
-	path = vendor/mimalloc
-	url = https://github.com/microsoft/mimalloc.git/

Dockerfile

@@ -1,75 +1,82 @@
-FROM ubuntu:24.04
+FROM debian:stable-slim
 
 ARG MINISIG=0.12
-ARG ZIG=0.14.1
 ARG ZIG_MINISIG=RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U
-ARG ARCH=x86_64
-ARG V8=13.6.233.8
-ARG ZIG_V8=v0.1.24
+ARG V8=14.0.365.4
+ARG ZIG_V8=v0.3.1
+ARG TARGETPLATFORM
 
 RUN apt-get update -yq && \
-    apt-get install -yq xz-utils \
-        python3 ca-certificates git \
+    apt-get install -yq xz-utils ca-certificates \
         pkg-config libglib2.0-dev \
-        gperf libexpat1-dev \
-        cmake clang \
-        curl git
+        clang make curl git
+
+# Get Rust
+RUN curl https://sh.rustup.rs -sSf | sh -s -- --profile minimal -y
+ENV PATH="/root/.cargo/bin:${PATH}"
 
 # install minisig
 RUN curl --fail -L -O https://github.com/jedisct1/minisign/releases/download/${MINISIG}/minisign-${MINISIG}-linux.tar.gz && \
-    tar xvzf minisign-${MINISIG}-linux.tar.gz
-
-# install zig
-RUN curl --fail -L -O https://ziglang.org/download/${ZIG}/zig-${ARCH}-linux-${ZIG}.tar.xz
-RUN curl --fail -L -O https://ziglang.org/download/${ZIG}/zig-${ARCH}-linux-${ZIG}.tar.xz.minisig
-
-RUN minisign-linux/${ARCH}/minisign -Vm zig-${ARCH}-linux-${ZIG}.tar.xz -P ${ZIG_MINISIG}
-
-# clean minisg
-RUN rm -fr minisign-0.11-linux.tar.gz minisign-linux
-
-# install zig
-RUN tar xvf zig-${ARCH}-linux-${ZIG}.tar.xz && \
-    mv zig-${ARCH}-linux-${ZIG} /usr/local/lib && \
-    ln -s /usr/local/lib/zig-${ARCH}-linux-${ZIG}/zig /usr/local/bin/zig
-
-# clean up zig install
-RUN rm -fr zig-${ARCH}-linux-${ZIG}.tar.xz zig-${ARCH}-linux-${ZIG}.tar.xz.minisig
-
-# force use of http instead of ssh with github
-RUN cat <<EOF > /root/.gitconfig
-[url "https://github.com/"]
-    insteadOf="git@github.com:"
-EOF
+    tar xvzf minisign-${MINISIG}-linux.tar.gz -C /
 
 # clone lightpanda
-RUN git clone git@github.com:lightpanda-io/browser.git
-
+RUN git clone https://github.com/lightpanda-io/browser.git
 WORKDIR /browser
 
+# install zig
+RUN ZIG=$(grep '\.minimum_zig_version = "' "build.zig.zon" | cut -d'"' -f2) && \
+    case $TARGETPLATFORM in \
+      "linux/arm64") ARCH="aarch64" ;; \
+      *) ARCH="x86_64" ;; \
+    esac && \
+    curl --fail -L -O https://ziglang.org/download/${ZIG}/zig-${ARCH}-linux-${ZIG}.tar.xz && \
+    curl --fail -L -O https://ziglang.org/download/${ZIG}/zig-${ARCH}-linux-${ZIG}.tar.xz.minisig && \
+    /minisign-linux/${ARCH}/minisign -Vm zig-${ARCH}-linux-${ZIG}.tar.xz -P ${ZIG_MINISIG} && \
+    tar xvf zig-${ARCH}-linux-${ZIG}.tar.xz && \
+    mv zig-${ARCH}-linux-${ZIG} /usr/local/lib && \
+    ln -s /usr/local/lib/zig-${ARCH}-linux-${ZIG}/zig /usr/local/bin/zig
+
 # install deps
 RUN git submodule init && \
     git submodule update --recursive
 
-RUN make install-libiconv && \
-    make install-netsurf && \
-    make install-mimalloc
-
 # download and install v8
-RUN curl --fail -L -o libc_v8.a https://github.com/lightpanda-io/zig-v8-fork/releases/download/${ZIG_V8}/libc_v8_${V8}_linux_${ARCH}.a && \
-    mkdir -p v8/out/linux/release/obj/zig/ && \
-    mv libc_v8.a v8/out/linux/release/obj/zig/libc_v8.a
+RUN case $TARGETPLATFORM in \
+    "linux/arm64") ARCH="aarch64" ;; \
+    *) ARCH="x86_64" ;; \
+    esac && \
+    curl --fail -L -o libc_v8.a https://github.com/lightpanda-io/zig-v8-fork/releases/download/${ZIG_V8}/libc_v8_${V8}_linux_${ARCH}.a && \
+    mkdir -p v8/ && \
+    mv libc_v8.a v8/libc_v8.a
+
+# build v8 snapshot
+RUN zig build -Doptimize=ReleaseFast \
+    -Dprebuilt_v8_path=v8/libc_v8.a \
+    snapshot_creator -- src/snapshot.bin
 
 # build release
-RUN make build
+RUN zig build -Doptimize=ReleaseFast \
+    -Dsnapshot_path=../../snapshot.bin \
+    -Dprebuilt_v8_path=v8/libc_v8.a \
+    -Dgit_commit=$(git rev-parse --short HEAD)
 
-FROM ubuntu:24.04
+FROM debian:stable-slim
+
+RUN apt-get update -yq && \
+    apt-get install -yq tini
+
+FROM debian:stable-slim
 
 # copy ca certificates
 COPY --from=0 /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 
 COPY --from=0 /browser/zig-out/bin/lightpanda /bin/lightpanda
+COPY --from=1 /usr/bin/tini /usr/bin/tini
 
 EXPOSE 9222/tcp
 
-CMD ["/bin/lightpanda", "serve", "--host", "0.0.0.0", "--port", "9222"]
+# Lightpanda install only some signal handlers, and PID 1 doesn't have a default SIGTERM signal handler.
+# Using "tini" as PID1 ensures that signals work as expected, so e.g. "docker stop" will not hang.
+# (See https://github.com/krallin/tini#why-tini).
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["/bin/lightpanda", "serve", "--host", "0.0.0.0", "--port", "9222", "--log_level", "info"]

LICENSING.md

@@ -5,14 +5,6 @@ List](https://spdx.org/licenses/).
 
 The default license for this project is [AGPL-3.0-only](LICENSE).
 
-## MIT
-
-The following files are licensed under MIT:
-
-```
-src/polyfill/fetch.js
-```
-
 The following directories and their subdirectories are licensed under their
 original upstream licenses:
 

Makefile

@@ -34,7 +34,7 @@ endif
 
 ## Display this help screen
 help:
-	@printf "\e[36m%-35s %s\e[0m\n" "Command" "Usage"
+	@printf "\033[36m%-35s %s\033[0m\n" "Command" "Usage"
 	@sed -n -e '/^## /{'\
 		-e 's/## //g;'\
 		-e 'h;'\
@@ -47,200 +47,63 @@ help:
 
 # $(ZIG) commands
 # ------------
-.PHONY: build build-dev run run-release shell test bench download-zig wpt data get-v8 build-v8 build-v8-dev
-.PHONY: end2end
+.PHONY: build build-v8-snapshot build-dev run run-release shell test bench data end2end
 
-zig_version = $(shell grep 'recommended_zig_version = "' "vendor/zig-js-runtime/build.zig" | cut -d'"' -f2)
+## Build v8 snapshot
+build-v8-snapshot:
+	@printf "\033[36mBuilding v8 snapshot (release safe)...\033[0m\n"
+	@$(ZIG) build -Doptimize=ReleaseFast snapshot_creator -- src/snapshot.bin || (printf "\033[33mBuild ERROR\033[0m\n"; exit 1;)
+	@printf "\033[33mBuild OK\033[0m\n"
 
-## Download the zig recommended version
-download-zig:
-	$(eval url = "https://ziglang.org/download/$(zig_version)/zig-$(OS)-$(ARCH)-$(zig_version).tar.xz")
-	$(eval dest = "/tmp/zig-$(OS)-$(ARCH)-$(zig_version).tar.xz")
-	@printf "\e[36mDownload zig version $(zig_version)...\e[0m\n"
-	@curl -o "$(dest)" -L "$(url)" || (printf "\e[33mBuild ERROR\e[0m\n"; exit 1;)
-	@printf "\e[33mDownloaded $(dest)\e[0m\n"
-
-## Build in release-safe mode
-build:
-	@printf "\e[36mBuilding (release safe)...\e[0m\n"
-	$(ZIG) build -Doptimize=ReleaseSafe -Dgit_commit=$$(git rev-parse --short HEAD) || (printf "\e[33mBuild ERROR\e[0m\n"; exit 1;)
-	@printf "\e[33mBuild OK\e[0m\n"
+## Build in release-fast mode
+build: build-v8-snapshot
+	@printf "\033[36mBuilding (release fast)...\033[0m\n"
+	@$(ZIG) build -Doptimize=ReleaseFast -Dsnapshot_path=../../snapshot.bin -Dgit_commit=$$(git rev-parse --short HEAD) || (printf "\033[33mBuild ERROR\033[0m\n"; exit 1;)
+	@printf "\033[33mBuild OK\033[0m\n"
 
 ## Build in debug mode
 build-dev:
-	@printf "\e[36mBuilding (debug)...\e[0m\n"
-	@$(ZIG) build -Dgit_commit=$$(git rev-parse --short HEAD) || (printf "\e[33mBuild ERROR\e[0m\n"; exit 1;)
-	@printf "\e[33mBuild OK\e[0m\n"
+	@printf "\033[36mBuilding (debug)...\033[0m\n"
+	@$(ZIG) build -Dgit_commit=$$(git rev-parse --short HEAD) || (printf "\033[33mBuild ERROR\033[0m\n"; exit 1;)
+	@printf "\033[33mBuild OK\033[0m\n"
 
 ## Run the server in release mode
 run: build
-	@printf "\e[36mRunning...\e[0m\n"
-	@./zig-out/bin/lightpanda || (printf "\e[33mRun ERROR\e[0m\n"; exit 1;)
+	@printf "\033[36mRunning...\033[0m\n"
+	@./zig-out/bin/lightpanda || (printf "\033[33mRun ERROR\033[0m\n"; exit 1;)
 
 ## Run the server in debug mode
 run-debug: build-dev
-	@printf "\e[36mRunning...\e[0m\n"
-	@./zig-out/bin/lightpanda || (printf "\e[33mRun ERROR\e[0m\n"; exit 1;)
+	@printf "\033[36mRunning...\033[0m\n"
+	@./zig-out/bin/lightpanda || (printf "\033[33mRun ERROR\033[0m\n"; exit 1;)
 
 ## Run a JS shell in debug mode
 shell:
-	@printf "\e[36mBuilding shell...\e[0m\n"
-	@$(ZIG) build shell || (printf "\e[33mBuild ERROR\e[0m\n"; exit 1;)
+	@printf "\033[36mBuilding shell...\033[0m\n"
+	@$(ZIG) build shell || (printf "\033[33mBuild ERROR\033[0m\n"; exit 1;)
 
-## Run WPT tests
-wpt:
-	@printf "\e[36mBuilding wpt...\e[0m\n"
-	@$(ZIG) build wpt -- $(filter-out $@,$(MAKECMDGOALS)) || (printf "\e[33mBuild ERROR\e[0m\n"; exit 1;)
-
-wpt-summary:
-	@printf "\e[36mBuilding wpt...\e[0m\n"
-	@$(ZIG) build wpt -- --summary $(filter-out $@,$(MAKECMDGOALS)) || (printf "\e[33mBuild ERROR\e[0m\n"; exit 1;)
-
-## Test
+## Test - `grep` is used to filter out the huge compile command on build
+ifeq ($(OS), macos)
 test:
-	@TEST_FILTER='${F}' $(ZIG) build test -freference-trace --summary all
+	@script -q /dev/null sh -c 'TEST_FILTER="${F}" $(ZIG) build test -freference-trace' 2>&1 \
+		| grep --line-buffered -v "^/.*zig test -freference-trace"
+else
+test:
+	@script -qec 'TEST_FILTER="${F}" $(ZIG) build test -freference-trace' /dev/null 2>&1 \
+		| grep --line-buffered -v "^/.*zig test -freference-trace"
+endif
 
 ## Run demo/runner end to end tests
 end2end:
 	@test -d ../demo
 	cd ../demo && go run runner/main.go
 
-## v8
-get-v8:
-	@printf "\e[36mGetting v8 source...\e[0m\n"
-	@$(ZIG) build get-v8
-
-build-v8-dev:
-	@printf "\e[36mBuilding v8 (dev)...\e[0m\n"
-	@$(ZIG) build build-v8
-
-build-v8:
-	@printf "\e[36mBuilding v8...\e[0m\n"
-	@$(ZIG) build -Doptimize=ReleaseSafe build-v8
-
 # Install and build required dependencies commands
 # ------------
-.PHONY: install-submodule
-.PHONY: install-libiconv
-.PHONY: _install-netsurf install-netsurf clean-netsurf test-netsurf install-netsurf-dev
-.PHONY: install-mimalloc install-mimalloc-dev clean-mimalloc
-.PHONY: install-dev install
+.PHONY: install
 
-## Install and build dependencies for release
-install: install-submodule install-libiconv install-netsurf install-mimalloc
-
-## Install and build dependencies for dev
-install-dev: install-submodule install-libiconv install-netsurf-dev install-mimalloc-dev
-
-install-netsurf-dev: _install-netsurf
-install-netsurf-dev: OPTCFLAGS := -O0 -g -DNDEBUG
-
-install-netsurf: _install-netsurf
-install-netsurf: OPTCFLAGS := -DNDEBUG
-
-BC_NS := $(BC)vendor/netsurf/out/$(OS)-$(ARCH)
-ICONV := $(BC)vendor/libiconv/out/$(OS)-$(ARCH)
-# TODO: add Linux iconv path (I guess it depends on the distro)
-# TODO: this way of linking libiconv is not ideal. We should have a more generic way
-# and stick to a specif version. Maybe build from source. Anyway not now.
-_install-netsurf: clean-netsurf
-	@printf "\e[36mInstalling NetSurf...\e[0m\n" && \
-	ls $(ICONV)/lib/libiconv.a 1> /dev/null || (printf "\e[33mERROR: you need to execute 'make install-libiconv'\e[0m\n"; exit 1;) && \
-	mkdir -p $(BC_NS) && \
-	cp -R vendor/netsurf/share $(BC_NS) && \
-	export PREFIX=$(BC_NS) && \
-	export OPTLDFLAGS="-L$(ICONV)/lib" && \
-	export OPTCFLAGS="$(OPTCFLAGS) -I$(ICONV)/include" && \
-	printf "\e[33mInstalling libwapcaplet...\e[0m\n" && \
-	cd vendor/netsurf/libwapcaplet && \
-	BUILDDIR=$(BC_NS)/build/libwapcaplet make install && \
-	cd ../libparserutils && \
-	printf "\e[33mInstalling libparserutils...\e[0m\n" && \
-	BUILDDIR=$(BC_NS)/build/libparserutils make install && \
-	cd ../libhubbub && \
-	printf "\e[33mInstalling libhubbub...\e[0m\n" && \
-	BUILDDIR=$(BC_NS)/build/libhubbub make install && \
-	rm src/treebuilder/autogenerated-element-type.c && \
-	cd ../libdom && \
-	printf "\e[33mInstalling libdom...\e[0m\n" && \
-	BUILDDIR=$(BC_NS)/build/libdom make install && \
-	printf "\e[33mRunning libdom example...\e[0m\n" && \
-	cd examples && \
-	$(ZIG) cc \
-	-I$(ICONV)/include \
-	-I$(BC_NS)/include \
-	-L$(ICONV)/lib \
-	-L$(BC_NS)/lib \
-	-liconv \
-	-ldom \
-	-lhubbub \
-	-lparserutils \
-	-lwapcaplet \
-	-o a.out \
-	dom-structure-dump.c \
-	$(ICONV)/lib/libiconv.a && \
-	./a.out > /dev/null && \
-	rm a.out && \
-	printf "\e[36mDone NetSurf $(OS)\e[0m\n"
-
-clean-netsurf:
-	@printf "\e[36mCleaning NetSurf build...\e[0m\n" && \
-	rm -Rf $(BC_NS)
-
-test-netsurf:
-	@printf "\e[36mTesting NetSurf...\e[0m\n" && \
-	export PREFIX=$(BC_NS) && \
-	export LDFLAGS="-L$(ICONV)/lib -L$(BC_NS)/lib" && \
-	export CFLAGS="-I$(ICONV)/include -I$(BC_NS)/include" && \
-	cd vendor/netsurf/libdom && \
-	BUILDDIR=$(BC_NS)/build/libdom make test
-
-download-libiconv:
-ifeq ("$(wildcard vendor/libiconv/libiconv-1.17)","")
-	@mkdir -p vendor/libiconv
-	@cd vendor/libiconv && \
-	curl https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.17.tar.gz | tar -xvzf -
-endif
-
-install-libiconv: download-libiconv clean-libiconv
-	@cd vendor/libiconv/libiconv-1.17 && \
-	./configure --prefix=$(ICONV) --enable-static && \
-	make && make install
-
-clean-libiconv:
-ifneq ("$(wildcard vendor/libiconv/libiconv-1.17/Makefile)","")
-	@cd vendor/libiconv/libiconv-1.17 && \
-	make clean
-endif
+install: build
 
 data:
 	cd src/data && go run public_suffix_list_gen.go > public_suffix_list.zig
 
-.PHONY: _build_mimalloc
-
-MIMALLOC := $(BC)vendor/mimalloc/out/$(OS)-$(ARCH)
-_build_mimalloc: clean-mimalloc
-	@mkdir -p $(MIMALLOC)/build && \
-	cd $(MIMALLOC)/build && \
-	cmake -DMI_BUILD_SHARED=OFF -DMI_BUILD_OBJECT=OFF -DMI_BUILD_TESTS=OFF -DMI_OVERRIDE=OFF $(OPTS) ../../.. && \
-	make && \
-	mkdir -p $(MIMALLOC)/lib
-
-install-mimalloc-dev: _build_mimalloc
-install-mimalloc-dev: OPTS=-DCMAKE_BUILD_TYPE=Debug
-install-mimalloc-dev:
-	@cd $(MIMALLOC) && \
-	mv build/libmimalloc-debug.a lib/libmimalloc.a
-
-install-mimalloc: _build_mimalloc
-install-mimalloc:
-	@cd $(MIMALLOC) && \
-	mv build/libmimalloc.a lib/libmimalloc.a
-
-clean-mimalloc:
-	@rm -Rf $(MIMALLOC)/build
-
-## Init and update git submodule
-install-submodule:
-	@git submodule init && \
-	git submodule update

README.md

@@ -18,7 +18,7 @@ Lightpanda is the open-source browser made for headless usage:
 
 - Javascript execution
 - Support of Web APIs (partial, WIP)
-- Compatible with Playwright[^1], Puppeteer through CDP (WIP)
+- Compatible with Playwright[^1], Puppeteer, chromedp through [CDP](https://chromedevtools.github.io/devtools-protocol/)
 
 Fast web automation for AI agents, LLM training, scraping and testing:
 
@@ -41,7 +41,8 @@ Due to the nature of Playwright, a script that works with the current version of
 
 ## Quick start
 
-### Install from the nightly builds
+### Install
+**Install from the nightly builds**
 
 You can download the last binary from the [nightly
 builds](https://github.com/lightpanda-io/browser/releases/tag/nightly) for
@@ -64,26 +65,62 @@ chmod a+x ./lightpanda
 The Lightpanda browser is compatible to run on windows inside WSL. Follow the Linux instruction for installation from a WSL terminal.
 It is recommended to install clients like Puppeteer on the Windows host.
 
+**Install from Docker**
+
+Lightpanda provides [official Docker
+images](https://hub.docker.com/r/lightpanda/browser) for both Linux amd64 and
+arm64 architectures.
+The following command fetches the Docker image and starts a new container exposing Lightpanda's CDP server on port `9222`.
+```console
+docker run -d --name lightpanda -p 9222:9222 lightpanda/browser:nightly
+```
+
 ### Dump a URL
 
 ```console
-./lightpanda fetch --dump https://lightpanda.io
+./lightpanda fetch --obey_robots --log_format pretty  --log_level info https://demo-browser.lightpanda.io/campfire-commerce/
 ```
 ```console
-info(browser): GET https://lightpanda.io/ http.Status.ok
-info(browser): fetch script https://api.website.lightpanda.io/js/script.js: http.Status.ok
-info(browser): eval remote https://api.website.lightpanda.io/js/script.js: TypeError: Cannot read properties of undefined (reading 'pushState')
+INFO  telemetry : telemetry status . . . . . . . . . . . . .  [+0ms]
+      disabled = false
+
+INFO  page : navigate . . . . . . . . . . . . . . . . . . . . [+6ms]
+      url = https://demo-browser.lightpanda.io/campfire-commerce/
+      method = GET
+      reason = address_bar
+      body = false
+      req_id = 1
+
+INFO  browser : executing script . . . . . . . . . . . . . .  [+118ms]
+      src = https://demo-browser.lightpanda.io/campfire-commerce/script.js
+      kind = javascript
+      cacheable = true
+
+INFO  http : request complete . . . . . . . . . . . . . . . . [+140ms]
+      source = xhr
+      url = https://demo-browser.lightpanda.io/campfire-commerce/json/product.json
+      status = 200
+      len = 4770
+
+INFO  http : request complete . . . . . . . . . . . . . . . . [+141ms]
+      source = fetch
+      url = https://demo-browser.lightpanda.io/campfire-commerce/json/reviews.json
+      status = 200
+      len = 1615
 <!DOCTYPE html>
 ```
 
 ### Start a CDP server
 
 ```console
-./lightpanda serve --host 127.0.0.1 --port 9222
+./lightpanda serve --obey_robots --log_format pretty  --log_level info --host 127.0.0.1 --port 9222
 ```
 ```console
-info(websocket): starting blocking worker to listen on 127.0.0.1:9222
-info(server): accepting new conn...
+INFO  telemetry : telemetry status . . . . . . . . . . . . .  [+0ms]
+      disabled = false
+
+INFO  app : server running . . . . . . . . . . . . . . . . .  [+0ms]
+      address = 127.0.0.1:9222
 ```
 
 Once the CDP server started, you can run a Puppeteer script by configuring the
@@ -104,7 +141,7 @@ const context = await browser.createBrowserContext();
 const page = await context.newPage();
 
 // Dump all the links from the page.
-await page.goto('https://wikipedia.com/');
+await page.goto('https://demo-browser.lightpanda.io/amiibo/', {waitUntil: "networkidle0"});
 
 const links = await page.evaluate(() => {
   return Array.from(document.querySelectorAll('a')).map(row => {
@@ -124,21 +161,28 @@ By default, Lightpanda collects and sends usage telemetry. This can be disabled
 
 ## Status
 
-Lightpanda is still a work in progress and is currently at a Beta stage.
-
-:warning: You should expect most websites to fail or crash.
+Lightpanda is in Beta and currently a work in progress. Stability and coverage are improving and many websites now work.
+You may still encounter errors or crashes. Please open an issue with specifics if so.
 
 Here are the key features we have implemented:
 
-- [x] HTTP loader
-- [x] HTML parser and DOM tree (based on Netsurf libs)
-- [x] Javascript support (v8)
-- [x] Basic DOM APIs
+- [x] HTTP loader ([Libcurl](https://curl.se/libcurl/))
+- [x] HTML parser ([html5ever](https://github.com/servo/html5ever))
+- [x] DOM tree
+- [x] Javascript support ([v8](https://v8.dev/))
+- [x] DOM APIs
 - [x] Ajax
   - [x] XHR API
   - [x] Fetch API
 - [x] DOM dump
-- [x] Basic CDP/websockets server
+- [x] CDP/websockets server
+- [x] Click
+- [x] Input form
+- [x] Cookies
+- [x] Custom HTTP headers
+- [x] Proxy support
+- [x] Network interception
+- [x] Respect `robots.txt` with option `--obey_robots`
 
 NOTE: There are hundreds of Web APIs. Developing a browser (even just for headless mode) is a huge task. Coverage will increase over time.
 
@@ -148,102 +192,57 @@ You can also follow the progress of our Javascript support in our dedicated [zig
 
 ### Prerequisites
 
-Lightpanda is written with [Zig](https://ziglang.org/) `0.14.1`. You have to
+Lightpanda is written with [Zig](https://ziglang.org/) `0.15.2`. You have to
 install it with the right version in order to build the project.
 
 Lightpanda also depends on
 [zig-js-runtime](https://github.com/lightpanda-io/zig-js-runtime/) (with v8),
-[Netsurf libs](https://www.netsurf-browser.org/) and
-[Mimalloc](https://microsoft.github.io/mimalloc).
+[Libcurl](https://curl.se/libcurl/) and [html5ever](https://github.com/servo/html5ever).
 
 To be able to build the v8 engine for zig-js-runtime, you have to install some libs:
 
-For Debian/Ubuntu based Linux:
+For **Debian/Ubuntu based Linux**:
 
 ```
-sudo apt install xz-utils \
-    python3 ca-certificates git \
+sudo apt install xz-utils ca-certificates \
     pkg-config libglib2.0-dev \
-    gperf libexpat1-dev unzip rsync \
-    cmake clang
+    clang make curl git
 ```
+You also need to [install Rust](https://rust-lang.org/tools/install/).
 
-For systems with [Nix](https://nixos.org/download/), you can use the devShell:
+For systems with [**Nix**](https://nixos.org/download/), you can use the devShell:
 ```
 nix develop
 ```
 
-For MacOS, you only need cmake:
-
+For **MacOS**, you need cmake and [Rust](https://rust-lang.org/tools/install/).
 ```
 brew install cmake
 ```
 
-### Install and build dependencies
+### Build and run
 
-#### All in one build
+You an build the entire browser with `make build` or `make build-dev` for debug
+env.
 
-You can run `make install` to install deps all in one (or `make install-dev` if you need the development versions).
+But you can directly use the zig command: `zig build run`.
 
-Be aware that the build task is very long and cpu consuming, as you will build from sources all dependencies, including the v8 Javascript engine.
+#### Embed v8 snapshot
 
-#### Step by step build dependency
-
-The project uses git submodules for dependencies.
-
-To init or update the submodules in the `vendor/` directory:
+Lighpanda uses v8 snapshot. By default, it is created on startup but you can
+embed it by using the following commands:
 
+Generate the snapshot.
 ```
-make install-submodule
+zig build snapshot_creator -- src/snapshot.bin
 ```
 
-**iconv**
-
-libiconv is an internationalization library used by Netsurf.
-
+Build using the snapshot binary.
 ```
-make install-libiconv
+zig build -Dsnapshot_path=../../snapshot.bin
 ```
 
-**Netsurf libs**
-
-Netsurf libs are used for HTML parsing and DOM tree generation.
-
-```
-make install-netsurf
-```
-
-For dev env, use `make install-netsurf-dev`.
-
-**Mimalloc**
-
-Mimalloc is used as a C memory allocator.
-
-```
-make install-mimalloc
-```
-
-For dev env, use `make install-mimalloc-dev`.
-
-Note: when Mimalloc is built in dev mode, you can dump memory stats with the
-env var `MIMALLOC_SHOW_STATS=1`. See
-[https://microsoft.github.io/mimalloc/environment.html](https://microsoft.github.io/mimalloc/environment.html).
-
-**v8**
-
-First, get the tools necessary for building V8, as well as the V8 source code:
-
-```
-make get-v8
-```
-
-Next, build v8. This build task is very long and cpu consuming, as you will build v8 from sources.
-
-```
-make build-v8
-```
-
-For dev env, use `make build-v8-dev`.
+See [#1279](https://github.com/lightpanda-io/browser/pull/1279) for more details.
 
 ## Test
 
@@ -270,35 +269,75 @@ make end2end
 Lightpanda is tested against the standardized [Web Platform
 Tests](https://web-platform-tests.org/).
 
-The relevant tests cases are committed in a [dedicated repository](https://github.com/lightpanda-io/wpt) which is fetched by the `make install-submodule` command.
-
-All the tests cases executed are located in the `tests/wpt` sub-directory.
+We use [a fork](https://github.com/lightpanda-io/wpt/tree/fork) including a custom
+[`testharnessreport.js`](https://github.com/lightpanda-io/wpt/commit/01a3115c076a3ad0c84849dbbf77a6e3d199c56f).
 
 For reference, you can easily execute a WPT test case with your browser via
 [wpt.live](https://wpt.live).
 
+#### Configure WPT HTTP server
+
+To run the test, you must clone the repository, configure the custom hosts and generate the
+`MANIFEST.json` file.
+
+Clone the repository with the `fork` branch.
+```
+git clone -b fork --depth=1 git@github.com:lightpanda-io/wpt.git
+```
+
+Enter into the `wpt/` dir.
+
+Install custom domains in your `/etc/hosts`
+```
+./wpt make-hosts-file | sudo tee -a /etc/hosts
+```
+
+Generate `MANIFEST.json`
+```
+./wpt manifest
+```
+Use the [WPT's setup
+guide](https://web-platform-tests.org/running-tests/from-local-system.html) for
+details.
+
 #### Run WPT test suite
 
-To run all the tests:
+An external [Go](https://go.dev) runner is provided by
+[github.com/lightpanda-io/demo/](https://github.com/lightpanda-io/demo/)
+repository, located into `wptrunner/` dir.
+You need to clone the project first.
+
+First start the WPT's HTTP server from your `wpt/` clone dir.
+```
+./wpt serve
+```
+
+Run a Lightpanda browser
 
 ```
-make wpt
+zig build run -- --insecure_disable_tls_host_verification
+```
+
+Then you can start the wptrunner from the Demo's clone dir:
+```
+cd wptrunner && go run .
 ```
 
 Or one specific test:
 
 ```
-make wpt Node-childNodes.html
+cd wptrunner && go run . Node-childNodes.html
 ```
 
-#### Add a new WPT test case
+`wptrunner` command accepts `--summary` and `--json` options modifying output.
+Also `--concurrency` define the concurrency limit.
 
-We add new relevant tests cases files when we implemented changes in Lightpanda.
+:warning: Running the whole test suite will take a long time. In this case,
+it's useful to build in `releaseFast` mode to make tests faster.
 
-To add a new test, copy the file you want from the [WPT
-repo](https://github.com/web-platform-tests/wpt) into the `tests/wpt` directory.
-
-:warning: Please keep the original directory tree structure of `tests/wpt`.
+```
+zig build -Doptimize=ReleaseFast run
+```
 
 ## Contributing
 

build.zig

@@ -17,236 +17,693 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 const std = @import("std");
-const builtin = @import("builtin");
 
-/// Do not rename this constant. It is scanned by some scripts to determine
-/// which zig version to install.
-const recommended_zig_version = "0.14.1";
-
-pub fn build(b: *std.Build) !void {
-    switch (comptime builtin.zig_version.order(std.SemanticVersion.parse(recommended_zig_version) catch unreachable)) {
-        .eq => {},
-        .lt => {
-            @compileError("The minimum version of Zig required to compile is '" ++ recommended_zig_version ++ "', found '" ++ builtin.zig_version_string ++ "'.");
-        },
-        .gt => {
-            std.debug.print(
-                "WARNING: Recommended Zig version '{s}', but found '{s}', build may fail...\n\n",
-                .{ recommended_zig_version, builtin.zig_version_string },
-            );
-        },
-    }
-
-    var opts = b.addOptions();
-    opts.addOption(
-        []const u8,
-        "git_commit",
-        b.option([]const u8, "git_commit", "Current git commit") orelse "dev",
-    );
+const Build = std.Build;
 
+pub fn build(b: *Build) !void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
-    {
-        // browser
-        // -------
+    const manifest = Manifest.init(b);
 
-        // compile and install
-        const exe = b.addExecutable(.{
-            .name = "lightpanda",
+    const git_commit = b.option([]const u8, "git_commit", "Current git commit");
+    const prebuilt_v8_path = b.option([]const u8, "prebuilt_v8_path", "Path to prebuilt libc_v8.a");
+    const snapshot_path = b.option([]const u8, "snapshot_path", "Path to v8 snapshot");
+
+    var opts = b.addOptions();
+    opts.addOption([]const u8, "version", manifest.version);
+    opts.addOption([]const u8, "git_commit", git_commit orelse "dev");
+    opts.addOption(?[]const u8, "snapshot_path", snapshot_path);
+
+    const enable_tsan = b.option(bool, "tsan", "Enable Thread Sanitizer") orelse false;
+    const enable_asan = b.option(bool, "asan", "Enable Address Sanitizer") orelse false;
+    const enable_csan = b.option(std.zig.SanitizeC, "csan", "Enable C Sanitizers");
+
+    const lightpanda_module = blk: {
+        const mod = b.addModule("lightpanda", .{
+            .root_source_file = b.path("src/lightpanda.zig"),
             .target = target,
             .optimize = optimize,
-            .root_source_file = b.path("src/main.zig"),
+            .link_libc = true,
+            .link_libcpp = true,
+            .sanitize_c = enable_csan,
+            .sanitize_thread = enable_tsan,
         });
+        mod.addImport("lightpanda", mod); // allow circular "lightpanda" import
+        mod.addImport("build_config", opts.createModule());
 
-        try common(b, opts, exe);
+        try linkV8(b, mod, enable_asan, enable_tsan, prebuilt_v8_path);
+        try linkCurl(b, mod);
+        try linkHtml5Ever(b, mod);
+
+        break :blk mod;
+    };
+
+    {
+        // browser
+        const exe = b.addExecutable(.{
+            .name = "lightpanda",
+            .use_llvm = true,
+            .root_module = b.createModule(.{
+                .root_source_file = b.path("src/main.zig"),
+                .target = target,
+                .optimize = optimize,
+                .sanitize_c = enable_csan,
+                .sanitize_thread = enable_tsan,
+                .imports = &.{
+                    .{ .name = "lightpanda", .module = lightpanda_module },
+                },
+            }),
+        });
         b.installArtifact(exe);
 
-        // run
         const run_cmd = b.addRunArtifact(exe);
         if (b.args) |args| {
             run_cmd.addArgs(args);
         }
-
-        // step
         const run_step = b.step("run", "Run the app");
         run_step.dependOn(&run_cmd.step);
     }
 
     {
-        // get v8
-        // -------
-        const v8 = b.dependency("v8", .{ .target = target, .optimize = optimize });
-        const get_v8 = b.addRunArtifact(v8.artifact("get-v8"));
-        const get_step = b.step("get-v8", "Get v8");
-        get_step.dependOn(&get_v8.step);
+        // snapshot creator
+        const exe = b.addExecutable(.{
+            .name = "lightpanda-snapshot-creator",
+            .use_llvm = true,
+            .root_module = b.createModule(.{
+                .root_source_file = b.path("src/main_snapshot_creator.zig"),
+                .target = target,
+                .optimize = optimize,
+                .imports = &.{
+                    .{ .name = "lightpanda", .module = lightpanda_module },
+                },
+            }),
+        });
+        b.installArtifact(exe);
+
+        const run_cmd = b.addRunArtifact(exe);
+        if (b.args) |args| {
+            run_cmd.addArgs(args);
+        }
+        const run_step = b.step("snapshot_creator", "Generate a v8 snapshot");
+        run_step.dependOn(&run_cmd.step);
     }
 
     {
-        // build v8
-        // -------
-        const v8 = b.dependency("v8", .{ .target = target, .optimize = optimize });
-        const build_v8 = b.addRunArtifact(v8.artifact("build-v8"));
-        const build_step = b.step("build-v8", "Build v8");
-        build_step.dependOn(&build_v8.step);
-    }
-
-    {
-        // tests
-        // ----
-
-        // compile
+        // test
         const tests = b.addTest(.{
-            .root_source_file = b.path("src/main.zig"),
+            .root_module = lightpanda_module,
+            .use_llvm = true,
             .test_runner = .{ .path = b.path("src/test_runner.zig"), .mode = .simple },
-            .target = target,
-            .optimize = optimize,
         });
-        try common(b, opts, tests);
-
         const run_tests = b.addRunArtifact(tests);
-        if (b.args) |args| {
-            run_tests.addArgs(args);
-        }
-
-        // step
-        const tests_step = b.step("test", "Run unit tests");
-        tests_step.dependOn(&run_tests.step);
+        const test_step = b.step("test", "Run unit tests");
+        test_step.dependOn(&run_tests.step);
     }
 
     {
-        // wpt
-        // -----
-
-        // compile and install
-        const wpt = b.addExecutable(.{
-            .name = "lightpanda-wpt",
-            .root_source_file = b.path("src/main_wpt.zig"),
+        // browser
+        const exe = b.addExecutable(.{
+            .name = "legacy_test",
+            .use_llvm = true,
+            .root_module = b.createModule(.{
+                .root_source_file = b.path("src/main_legacy_test.zig"),
                 .target = target,
                 .optimize = optimize,
+                .sanitize_c = enable_csan,
+                .sanitize_thread = enable_tsan,
+                .imports = &.{
+                    .{ .name = "lightpanda", .module = lightpanda_module },
+                },
+            }),
         });
-        try common(b, opts, wpt);
+        b.installArtifact(exe);
 
-        // run
-        const wpt_cmd = b.addRunArtifact(wpt);
+        const run_cmd = b.addRunArtifact(exe);
         if (b.args) |args| {
-            wpt_cmd.addArgs(args);
+            run_cmd.addArgs(args);
         }
-        // step
-        const wpt_step = b.step("wpt", "WPT tests");
-        wpt_step.dependOn(&wpt_cmd.step);
+        const run_step = b.step("legacy_test", "Run the app");
+        run_step.dependOn(&run_cmd.step);
     }
 }
 
-fn common(b: *std.Build, opts: *std.Build.Step.Options, step: *std.Build.Step.Compile) !void {
-    const mod = step.root_module;
+fn linkV8(
+    b: *Build,
+    mod: *Build.Module,
+    is_asan: bool,
+    is_tsan: bool,
+    prebuilt_v8_path: ?[]const u8,
+) !void {
     const target = mod.resolved_target.?;
-    const optimize = mod.optimize.?;
-    const dep_opts = .{ .target = target, .optimize = optimize };
 
-    try moduleNetSurf(b, step, target);
-    mod.addImport("tls", b.dependency("tls", dep_opts).module("tls"));
-    mod.addImport("tigerbeetle-io", b.dependency("tigerbeetle_io", .{}).module("tigerbeetle_io"));
-
-    {
-        // v8
-        const v8_opts = b.addOptions();
-        v8_opts.addOption(bool, "inspector_subtype", false);
-
-        const v8_mod = b.dependency("v8", dep_opts).module("v8");
-        v8_mod.addOptions("default_exports", v8_opts);
-        mod.addImport("v8", v8_mod);
+    const dep = b.dependency("v8", .{
+        .target = target,
+        .optimize = mod.optimize.?,
+        .is_asan = is_asan,
+        .is_tsan = is_tsan,
+        .inspector_subtype = false,
+        .v8_enable_sandbox = is_tsan,
+        .cache_root = b.pathFromRoot(".lp-cache"),
+        .prebuilt_v8_path = prebuilt_v8_path,
+    });
+    mod.addImport("v8", dep.module("v8"));
 }
 
-    mod.link_libcpp = true;
+fn linkHtml5Ever(b: *Build, mod: *Build.Module) !void {
+    const is_debug = if (mod.optimize.? == .Debug) true else false;
 
-    {
-        const release_dir = if (mod.optimize.? == .Debug) "debug" else "release";
-        const os = switch (target.result.os.tag) {
-            .linux => "linux",
-            .macos => "macos",
-            else => return error.UnsupportedPlatform,
-        };
-        var lib_path = try std.fmt.allocPrint(
-            mod.owner.allocator,
-            "v8/out/{s}/{s}/obj/zig/libc_v8.a",
-            .{ os, release_dir },
-        );
-        std.fs.cwd().access(lib_path, .{}) catch {
-            // legacy path
-            lib_path = try std.fmt.allocPrint(
-                mod.owner.allocator,
-                "v8/out/{s}/obj/zig/libc_v8.a",
-                .{release_dir},
-            );
-        };
-        mod.addObjectFile(mod.owner.path(lib_path));
+    const exec_cargo = b.addSystemCommand(&.{
+        "cargo",           "build",
+        "--profile",       if (is_debug) "dev" else "release",
+        "--manifest-path", "src/html5ever/Cargo.toml",
+    });
+
+    // TODO: We can prefer `--artifact-dir` once it become stable.
+    const out_dir = exec_cargo.addPrefixedOutputDirectoryArg("--target-dir=", "html5ever");
+
+    const html5ever_step = b.step("html5ever", "Install html5ever dependency (requires cargo)");
+    html5ever_step.dependOn(&exec_cargo.step);
+
+    const obj = out_dir.path(b, if (is_debug) "debug" else "release").path(b, "liblitefetch_html5ever.a");
+    mod.addObjectFile(obj);
 }
 
+fn linkCurl(b: *Build, mod: *Build.Module) !void {
+    const target = mod.resolved_target.?;
+
+    const curl = buildCurl(b, target, mod.optimize.?);
+    mod.linkLibrary(curl);
+
+    const zlib = buildZlib(b, target, mod.optimize.?);
+    curl.root_module.linkLibrary(zlib);
+
+    const brotli = buildBrotli(b, target, mod.optimize.?);
+    for (brotli) |lib| curl.root_module.linkLibrary(lib);
+
+    const nghttp2 = buildNghttp2(b, target, mod.optimize.?);
+    curl.root_module.linkLibrary(nghttp2);
+
+    const boringssl = buildBoringSsl(b, target, mod.optimize.?);
+    for (boringssl) |lib| curl.root_module.linkLibrary(lib);
+
     switch (target.result.os.tag) {
         .macos => {
-            // v8 has a dependency, abseil-cpp, which, on Mac, uses CoreFoundation
+            // needed for proxying on mac
             mod.addSystemFrameworkPath(.{ .cwd_relative = "/System/Library/Frameworks" });
             mod.linkFramework("CoreFoundation", .{});
+            mod.linkFramework("SystemConfiguration", .{});
         },
         else => {},
     }
-
-    mod.addImport("build_config", opts.createModule());
 }
 
-fn moduleNetSurf(b: *std.Build, step: *std.Build.Step.Compile, target: std.Build.ResolvedTarget) !void {
+fn buildZlib(b: *Build, target: Build.ResolvedTarget, optimize: std.builtin.OptimizeMode) *Build.Step.Compile {
+    const dep = b.dependency("zlib", .{});
+
+    const mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+
+    const lib = b.addLibrary(.{ .name = "z", .root_module = mod });
+    lib.installHeadersDirectory(dep.path(""), "", .{});
+    lib.addCSourceFiles(.{
+        .root = dep.path(""),
+        .flags = &.{
+            "-DHAVE_SYS_TYPES_H",
+            "-DHAVE_STDINT_H",
+            "-DHAVE_STDDEF_H",
+            "-DHAVE_UNISTD_H",
+        },
+        .files = &.{
+            "adler32.c", "compress.c", "crc32.c",
+            "deflate.c", "gzclose.c",  "gzlib.c",
+            "gzread.c",  "gzwrite.c",  "infback.c",
+            "inffast.c", "inflate.c",  "inftrees.c",
+            "trees.c",   "uncompr.c",  "zutil.c",
+        },
+    });
+
+    return lib;
+}
+
+fn buildBrotli(b: *Build, target: Build.ResolvedTarget, optimize: std.builtin.OptimizeMode) [3]*Build.Step.Compile {
+    const dep = b.dependency("brotli", .{});
+
+    const mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+    mod.addIncludePath(dep.path("c/include"));
+
+    const brotlicmn = b.addLibrary(.{ .name = "brotlicommon", .root_module = mod });
+    const brotlidec = b.addLibrary(.{ .name = "brotlidec", .root_module = mod });
+    const brotlienc = b.addLibrary(.{ .name = "brotlienc", .root_module = mod });
+
+    brotlicmn.installHeadersDirectory(dep.path("c/include/brotli"), "brotli", .{});
+    brotlicmn.addCSourceFiles(.{
+        .root = dep.path("c/common"),
+        .files = &.{
+            "transform.c",  "shared_dictionary.c", "platform.c",
+            "dictionary.c", "context.c",           "constants.c",
+        },
+    });
+    brotlidec.addCSourceFiles(.{
+        .root = dep.path("c/dec"),
+        .files = &.{
+            "bit_reader.c", "decode.c", "huffman.c",
+            "prefix.c",     "state.c",  "static_init.c",
+        },
+    });
+    brotlienc.addCSourceFiles(.{
+        .root = dep.path("c/enc"),
+        .files = &.{
+            "backward_references.c",        "backward_references_hq.c", "bit_cost.c",
+            "block_splitter.c",             "brotli_bit_stream.c",      "cluster.c",
+            "command.c",                    "compound_dictionary.c",    "compress_fragment.c",
+            "compress_fragment_two_pass.c", "dictionary_hash.c",        "encode.c",
+            "encoder_dict.c",               "entropy_encode.c",         "fast_log.c",
+            "histogram.c",                  "literal_cost.c",           "memory.c",
+            "metablock.c",                  "static_dict.c",            "static_dict_lut.c",
+            "static_init.c",                "utf8_util.c",
+        },
+    });
+
+    return .{ brotlicmn, brotlidec, brotlienc };
+}
+
+fn buildBoringSsl(b: *Build, target: Build.ResolvedTarget, optimize: std.builtin.OptimizeMode) [2]*Build.Step.Compile {
+    const dep = b.dependency("boringssl-zig", .{
+        .target = target,
+        .optimize = optimize,
+        .force_pic = true,
+    });
+
+    const ssl = dep.artifact("ssl");
+    ssl.bundle_ubsan_rt = false;
+
+    const crypto = dep.artifact("crypto");
+    crypto.bundle_ubsan_rt = false;
+
+    return .{ ssl, crypto };
+}
+
+fn buildNghttp2(b: *Build, target: Build.ResolvedTarget, optimize: std.builtin.OptimizeMode) *Build.Step.Compile {
+    const dep = b.dependency("nghttp2", .{});
+
+    const mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+    mod.addIncludePath(dep.path("lib/includes"));
+
+    const config = b.addConfigHeader(.{
+        .include_path = "nghttp2ver.h",
+        .style = .{ .cmake = dep.path("lib/includes/nghttp2/nghttp2ver.h.in") },
+    }, .{
+        .PACKAGE_VERSION = "1.68.90",
+        .PACKAGE_VERSION_NUM = 0x016890,
+    });
+    mod.addConfigHeader(config);
+
+    const lib = b.addLibrary(.{ .name = "nghttp2", .root_module = mod });
+
+    lib.installConfigHeader(config);
+    lib.installHeadersDirectory(dep.path("lib/includes/nghttp2"), "nghttp2", .{});
+    lib.addCSourceFiles(.{
+        .root = dep.path("lib"),
+        .flags = &.{
+            "-DNGHTTP2_STATICLIB",
+            "-DHAVE_TIME_H",
+            "-DHAVE_ARPA_INET_H",
+            "-DHAVE_NETINET_IN_H",
+        },
+        .files = &.{
+            "sfparse.c",                 "nghttp2_alpn.c",   "nghttp2_buf.c",
+            "nghttp2_callbacks.c",       "nghttp2_debug.c",  "nghttp2_extpri.c",
+            "nghttp2_frame.c",           "nghttp2_hd.c",     "nghttp2_hd_huffman.c",
+            "nghttp2_hd_huffman_data.c", "nghttp2_helper.c", "nghttp2_http.c",
+            "nghttp2_map.c",             "nghttp2_mem.c",    "nghttp2_option.c",
+            "nghttp2_outbound_item.c",   "nghttp2_pq.c",     "nghttp2_priority_spec.c",
+            "nghttp2_queue.c",           "nghttp2_rcbuf.c",  "nghttp2_session.c",
+            "nghttp2_stream.c",          "nghttp2_submit.c", "nghttp2_version.c",
+            "nghttp2_ratelim.c",         "nghttp2_time.c",
+        },
+    });
+
+    return lib;
+}
+
+fn buildCurl(
+    b: *Build,
+    target: Build.ResolvedTarget,
+    optimize: std.builtin.OptimizeMode,
+) *Build.Step.Compile {
+    const dep = b.dependency("curl", .{});
+
+    const mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+    mod.addIncludePath(dep.path("lib"));
+    mod.addIncludePath(dep.path("include"));
+
     const os = target.result.os.tag;
-    const arch = target.result.cpu.arch;
+    const abi = target.result.abi;
 
-    // iconv
-    const libiconv_lib_path = try std.fmt.allocPrint(
-        b.allocator,
-        "vendor/libiconv/out/{s}-{s}/lib/libiconv.a",
-        .{ @tagName(os), @tagName(arch) },
-    );
-    const libiconv_include_path = try std.fmt.allocPrint(
-        b.allocator,
-        "vendor/libiconv/out/{s}-{s}/lib/libiconv.a",
-        .{ @tagName(os), @tagName(arch) },
-    );
-    step.addObjectFile(b.path(libiconv_lib_path));
-    step.addIncludePath(b.path(libiconv_include_path));
+    const is_gnu = abi.isGnu();
+    const is_ios = os == .ios;
+    const is_android = abi.isAndroid();
+    const is_linux = os == .linux;
+    const is_darwin = os.isDarwin();
+    const is_windows = os == .windows;
+    const is_netbsd = os == .netbsd;
+    const is_openbsd = os == .openbsd;
+    const is_freebsd = os == .freebsd;
 
-    {
-        // mimalloc
-        const mimalloc = "vendor/mimalloc";
-        const lib_path = try std.fmt.allocPrint(
-            b.allocator,
-            mimalloc ++ "/out/{s}-{s}/lib/libmimalloc.a",
-            .{ @tagName(os), @tagName(arch) },
-        );
-        step.addObjectFile(b.path(lib_path));
-        step.addIncludePath(b.path(mimalloc ++ "/include"));
+    const byte_size = struct {
+        fn it(b2: *std.Build, target2: Build.ResolvedTarget, name: []const u8, comptime ctype: std.Target.CType) []const u8 {
+            const size = target2.result.cTypeByteSize(ctype);
+            return std.fmt.allocPrint(b2.allocator, "#define SIZEOF_{s} {d}", .{ name, size }) catch @panic("OOM");
         }
+    }.it;
 
-    // netsurf libs
-    const ns = "vendor/netsurf";
-    const ns_include_path = try std.fmt.allocPrint(
-        b.allocator,
-        ns ++ "/out/{s}-{s}/include",
-        .{ @tagName(os), @tagName(arch) },
-    );
-    step.addIncludePath(b.path(ns_include_path));
+    const config = .{
+        .HAVE_LIBZ = true,
+        .HAVE_BROTLI = true,
+        .USE_NGHTTP2 = true,
 
-    const libs: [4][]const u8 = .{
-        "libdom",
-        "libhubbub",
-        "libparserutils",
-        "libwapcaplet",
+        .USE_OPENSSL = true,
+        .OPENSSL_IS_BORINGSSL = true,
+        .CURL_CA_PATH = null,
+        .CURL_CA_BUNDLE = null,
+        .CURL_CA_FALLBACK = false,
+        .CURL_CA_SEARCH_SAFE = false,
+        .CURL_DEFAULT_SSL_BACKEND = "openssl",
+
+        .CURL_DISABLE_AWS = true,
+        .CURL_DISABLE_DICT = true,
+        .CURL_DISABLE_DOH = true,
+        .CURL_DISABLE_FILE = true,
+        .CURL_DISABLE_FTP = true,
+        .CURL_DISABLE_GOPHER = true,
+        .CURL_DISABLE_KERBEROS_AUTH = true,
+        .CURL_DISABLE_IMAP = true,
+        .CURL_DISABLE_IPFS = true,
+        .CURL_DISABLE_LDAP = true,
+        .CURL_DISABLE_LDAPS = true,
+        .CURL_DISABLE_MQTT = true,
+        .CURL_DISABLE_NTLM = true,
+        .CURL_DISABLE_PROGRESS_METER = true,
+        .CURL_DISABLE_POP3 = true,
+        .CURL_DISABLE_RTSP = true,
+        .CURL_DISABLE_SMB = true,
+        .CURL_DISABLE_SMTP = true,
+        .CURL_DISABLE_TELNET = true,
+        .CURL_DISABLE_TFTP = true,
+
+        .ssize_t = null,
+        ._FILE_OFFSET_BITS = 64,
+
+        .USE_IPV6 = true,
+        .CURL_OS = switch (os) {
+            .linux => if (is_android) "\"android\"" else "\"linux\"",
+            else => std.fmt.allocPrint(b.allocator, "\"{s}\"", .{@tagName(os)}) catch @panic("OOM"),
+        },
+
+        // Adjusts the sizes of variables
+        .SIZEOF_INT_CODE = byte_size(b, target, "INT", .int),
+        .SIZEOF_LONG_CODE = byte_size(b, target, "LONG", .long),
+        .SIZEOF_LONG_LONG_CODE = byte_size(b, target, "LONG_LONG", .longlong),
+
+        .SIZEOF_OFF_T_CODE = byte_size(b, target, "OFF_T", .longlong),
+        .SIZEOF_CURL_OFF_T_CODE = byte_size(b, target, "CURL_OFF_T", .longlong),
+        .SIZEOF_CURL_SOCKET_T_CODE = byte_size(b, target, "CURL_SOCKET_T", .int),
+
+        .SIZEOF_SIZE_T_CODE = byte_size(b, target, "SIZE_T", .longlong),
+        .SIZEOF_TIME_T_CODE = byte_size(b, target, "TIME_T", .longlong),
+
+        // headers availability
+        .HAVE_ARPA_INET_H = !is_windows,
+        .HAVE_DIRENT_H = true,
+        .HAVE_FCNTL_H = true,
+        .HAVE_IFADDRS_H = !is_windows,
+        .HAVE_IO_H = is_windows,
+        .HAVE_LIBGEN_H = true,
+        .HAVE_LINUX_TCP_H = is_linux and is_gnu,
+        .HAVE_LOCALE_H = true,
+        .HAVE_NETDB_H = !is_windows,
+        .HAVE_NETINET_IN6_H = is_android,
+        .HAVE_NETINET_IN_H = !is_windows,
+        .HAVE_NETINET_TCP_H = !is_windows,
+        .HAVE_NETINET_UDP_H = !is_windows,
+        .HAVE_NET_IF_H = !is_windows,
+        .HAVE_POLL_H = !is_windows,
+        .HAVE_PWD_H = !is_windows,
+        .HAVE_STDATOMIC_H = true,
+        .HAVE_STDBOOL_H = true,
+        .HAVE_STDDEF_H = true,
+        .HAVE_STDINT_H = true,
+        .HAVE_STRINGS_H = true,
+        .HAVE_STROPTS_H = false,
+        .HAVE_SYS_EVENTFD_H = is_linux or is_freebsd or is_netbsd,
+        .HAVE_SYS_FILIO_H = !is_linux and !is_windows,
+        .HAVE_SYS_IOCTL_H = !is_windows,
+        .HAVE_SYS_PARAM_H = true,
+        .HAVE_SYS_POLL_H = !is_windows,
+        .HAVE_SYS_RESOURCE_H = !is_windows,
+        .HAVE_SYS_SELECT_H = !is_windows,
+        .HAVE_SYS_SOCKIO_H = !is_linux and !is_windows,
+        .HAVE_SYS_TYPES_H = true,
+        .HAVE_SYS_UN_H = !is_windows,
+        .HAVE_SYS_UTIME_H = is_windows,
+        .HAVE_TERMIOS_H = !is_windows,
+        .HAVE_TERMIO_H = is_linux,
+        .HAVE_UNISTD_H = true,
+        .HAVE_UTIME_H = true,
+        .STDC_HEADERS = true,
+
+        // general environment
+        .CURL_KRB5_VERSION = null,
+        .HAVE_ALARM = !is_windows,
+        .HAVE_ARC4RANDOM = is_android,
+        .HAVE_ATOMIC = true,
+        .HAVE_BOOL_T = true,
+        .HAVE_BUILTIN_AVAILABLE = true,
+        .HAVE_CLOCK_GETTIME_MONOTONIC = !is_darwin and !is_windows,
+        .HAVE_CLOCK_GETTIME_MONOTONIC_RAW = is_linux,
+        .HAVE_FILE_OFFSET_BITS = true,
+        .HAVE_GETEUID = !is_windows,
+        .HAVE_GETPPID = !is_windows,
+        .HAVE_GETTIMEOFDAY = true,
+        .HAVE_GLIBC_STRERROR_R = is_gnu,
+        .HAVE_GMTIME_R = !is_windows,
+        .HAVE_LOCALTIME_R = !is_windows,
+        .HAVE_LONGLONG = !is_windows,
+        .HAVE_MACH_ABSOLUTE_TIME = is_darwin,
+        .HAVE_MEMRCHR = !is_darwin and !is_windows,
+        .HAVE_POSIX_STRERROR_R = !is_gnu and !is_windows,
+        .HAVE_PTHREAD_H = !is_windows,
+        .HAVE_SETLOCALE = true,
+        .HAVE_SETRLIMIT = !is_windows,
+        .HAVE_SIGACTION = !is_windows,
+        .HAVE_SIGINTERRUPT = !is_windows,
+        .HAVE_SIGNAL = true,
+        .HAVE_SIGSETJMP = !is_windows,
+        .HAVE_SIZEOF_SA_FAMILY_T = false,
+        .HAVE_SIZEOF_SUSECONDS_T = false,
+        .HAVE_SNPRINTF = true,
+        .HAVE_STRCASECMP = !is_windows,
+        .HAVE_STRCMPI = false,
+        .HAVE_STRDUP = true,
+        .HAVE_STRERROR_R = !is_windows,
+        .HAVE_STRICMP = false,
+        .HAVE_STRUCT_TIMEVAL = true,
+        .HAVE_TIME_T_UNSIGNED = false,
+        .HAVE_UTIME = true,
+        .HAVE_UTIMES = !is_windows,
+        .HAVE_WRITABLE_ARGV = !is_windows,
+        .HAVE__SETMODE = is_windows,
+        .USE_THREADS_POSIX = !is_windows,
+
+        // filesystem, network
+        .HAVE_ACCEPT4 = is_linux or is_freebsd or is_netbsd or is_openbsd,
+        .HAVE_BASENAME = true,
+        .HAVE_CLOSESOCKET = is_windows,
+        .HAVE_DECL_FSEEKO = !is_windows,
+        .HAVE_EVENTFD = is_linux or is_freebsd or is_netbsd,
+        .HAVE_FCNTL = !is_windows,
+        .HAVE_FCNTL_O_NONBLOCK = !is_windows,
+        .HAVE_FNMATCH = !is_windows,
+        .HAVE_FREEADDRINFO = true,
+        .HAVE_FSEEKO = !is_windows,
+        .HAVE_FSETXATTR = is_darwin or is_linux or is_netbsd,
+        .HAVE_FSETXATTR_5 = is_linux or is_netbsd,
+        .HAVE_FSETXATTR_6 = is_darwin,
+        .HAVE_FTRUNCATE = true,
+        .HAVE_GETADDRINFO = true,
+        .HAVE_GETADDRINFO_THREADSAFE = is_linux or is_freebsd or is_netbsd,
+        .HAVE_GETHOSTBYNAME_R = is_linux or is_freebsd,
+        .HAVE_GETHOSTBYNAME_R_3 = false,
+        .HAVE_GETHOSTBYNAME_R_3_REENTRANT = false,
+        .HAVE_GETHOSTBYNAME_R_5 = false,
+        .HAVE_GETHOSTBYNAME_R_5_REENTRANT = false,
+        .HAVE_GETHOSTBYNAME_R_6 = is_linux,
+        .HAVE_GETHOSTBYNAME_R_6_REENTRANT = is_linux,
+        .HAVE_GETHOSTNAME = true,
+        .HAVE_GETIFADDRS = if (is_windows) false else !is_android or target.result.os.versionRange().linux.android >= 24,
+        .HAVE_GETPASS_R = is_netbsd,
+        .HAVE_GETPEERNAME = true,
+        .HAVE_GETPWUID = !is_windows,
+        .HAVE_GETPWUID_R = !is_windows,
+        .HAVE_GETRLIMIT = !is_windows,
+        .HAVE_GETSOCKNAME = true,
+        .HAVE_IF_NAMETOINDEX = !is_windows,
+        .HAVE_INET_NTOP = !is_windows,
+        .HAVE_INET_PTON = !is_windows,
+        .HAVE_IOCTLSOCKET = is_windows,
+        .HAVE_IOCTLSOCKET_CAMEL = false,
+        .HAVE_IOCTLSOCKET_CAMEL_FIONBIO = false,
+        .HAVE_IOCTLSOCKET_FIONBIO = is_windows,
+        .HAVE_IOCTL_FIONBIO = !is_windows,
+        .HAVE_IOCTL_SIOCGIFADDR = !is_windows,
+        .HAVE_MSG_NOSIGNAL = !is_windows,
+        .HAVE_OPENDIR = true,
+        .HAVE_PIPE = !is_windows,
+        .HAVE_PIPE2 = is_linux or is_freebsd or is_netbsd or is_openbsd,
+        .HAVE_POLL = !is_windows,
+        .HAVE_REALPATH = !is_windows,
+        .HAVE_RECV = true,
+        .HAVE_SA_FAMILY_T = !is_windows,
+        .HAVE_SCHED_YIELD = !is_windows,
+        .HAVE_SELECT = true,
+        .HAVE_SEND = true,
+        .HAVE_SENDMMSG = !is_darwin and !is_windows,
+        .HAVE_SENDMSG = !is_windows,
+        .HAVE_SETMODE = !is_linux,
+        .HAVE_SETSOCKOPT_SO_NONBLOCK = false,
+        .HAVE_SOCKADDR_IN6_SIN6_ADDR = !is_windows,
+        .HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID = true,
+        .HAVE_SOCKET = true,
+        .HAVE_SOCKETPAIR = !is_windows,
+        .HAVE_STRUCT_SOCKADDR_STORAGE = true,
+        .HAVE_SUSECONDS_T = is_android or is_ios,
+        .USE_UNIX_SOCKETS = !is_windows,
     };
-    inline for (libs) |lib| {
-        const ns_lib_path = try std.fmt.allocPrint(
-            b.allocator,
-            ns ++ "/out/{s}-{s}/lib/" ++ lib ++ ".a",
-            .{ @tagName(os), @tagName(arch) },
-        );
-        step.addObjectFile(b.path(ns_lib_path));
-        step.addIncludePath(b.path(ns ++ "/" ++ lib ++ "/src"));
+
+    const curl_config = b.addConfigHeader(.{
+        .include_path = "curl_config.h",
+        .style = .{ .cmake = dep.path("lib/curl_config-cmake.h.in") },
+    }, .{
+        .CURL_EXTERN_SYMBOL = "__attribute__ ((__visibility__ (\"default\"))",
+    });
+    curl_config.addValues(config);
+
+    const lib = b.addLibrary(.{ .name = "curl", .root_module = mod });
+    lib.addConfigHeader(curl_config);
+    lib.installHeadersDirectory(dep.path("include/curl"), "curl", .{});
+    lib.addCSourceFiles(.{
+        .root = dep.path("lib"),
+        .flags = &.{
+            "-D_GNU_SOURCE",
+            "-DHAVE_CONFIG_H",
+            "-DCURL_STATICLIB",
+            "-DBUILDING_LIBCURL",
+        },
+        .files = &.{
+            // You can include all files from lib, libcurl uses #ifdef-guards to exclude code for disabled functions
+            "altsvc.c",              "amigaos.c",              "asyn-ares.c",
+            "asyn-base.c",           "asyn-thrdd.c",           "bufq.c",
+            "bufref.c",              "cf-h1-proxy.c",          "cf-h2-proxy.c",
+            "cf-haproxy.c",          "cf-https-connect.c",     "cf-ip-happy.c",
+            "cf-socket.c",           "cfilters.c",             "conncache.c",
+            "connect.c",             "content_encoding.c",     "cookie.c",
+            "cshutdn.c",             "curl_addrinfo.c",        "curl_endian.c",
+            "curl_fnmatch.c",        "curl_fopen.c",           "curl_get_line.c",
+            "curl_gethostname.c",    "curl_gssapi.c",          "curl_memrchr.c",
+            "curl_ntlm_core.c",      "curl_range.c",           "curl_rtmp.c",
+            "curl_sasl.c",           "curl_sha512_256.c",      "curl_share.c",
+            "curl_sspi.c",           "curl_threads.c",         "curl_trc.c",
+            "curlx/base64.c",        "curlx/dynbuf.c",         "curlx/fopen.c",
+            "curlx/inet_ntop.c",     "curlx/inet_pton.c",      "curlx/multibyte.c",
+            "curlx/nonblock.c",      "curlx/strcopy.c",        "curlx/strerr.c",
+            "curlx/strparse.c",      "curlx/timediff.c",       "curlx/timeval.c",
+            "curlx/version_win32.c", "curlx/wait.c",           "curlx/warnless.c",
+            "curlx/winapi.c",        "cw-out.c",               "cw-pause.c",
+            "dict.c",                "dllmain.c",              "doh.c",
+            "dynhds.c",              "easy.c",                 "easygetopt.c",
+            "easyoptions.c",         "escape.c",               "fake_addrinfo.c",
+            "file.c",                "fileinfo.c",             "formdata.c",
+            "ftp.c",                 "ftplistparser.c",        "getenv.c",
+            "getinfo.c",             "gopher.c",               "hash.c",
+            "headers.c",             "hmac.c",                 "hostip.c",
+            "hostip4.c",             "hostip6.c",              "hsts.c",
+            "http.c",                "http1.c",                "http2.c",
+            "http_aws_sigv4.c",      "http_chunks.c",          "http_digest.c",
+            "http_negotiate.c",      "http_ntlm.c",            "http_proxy.c",
+            "httpsrr.c",             "idn.c",                  "if2ip.c",
+            "imap.c",                "ldap.c",                 "llist.c",
+            "macos.c",               "md4.c",                  "md5.c",
+            "memdebug.c",            "mime.c",                 "mprintf.c",
+            "mqtt.c",                "multi.c",                "multi_ev.c",
+            "multi_ntfy.c",          "netrc.c",                "noproxy.c",
+            "openldap.c",            "parsedate.c",            "pingpong.c",
+            "pop3.c",                "progress.c",             "psl.c",
+            "rand.c",                "ratelimit.c",            "request.c",
+            "rtsp.c",                "select.c",               "sendf.c",
+            "setopt.c",              "sha256.c",               "slist.c",
+            "smb.c",                 "smtp.c",                 "socketpair.c",
+            "socks.c",               "socks_gssapi.c",         "socks_sspi.c",
+            "splay.c",               "strcase.c",              "strdup.c",
+            "strequal.c",            "strerror.c",             "system_win32.c",
+            "telnet.c",              "tftp.c",                 "transfer.c",
+            "uint-bset.c",           "uint-hash.c",            "uint-spbset.c",
+            "uint-table.c",          "url.c",                  "urlapi.c",
+            "vauth/cleartext.c",     "vauth/cram.c",           "vauth/digest.c",
+            "vauth/digest_sspi.c",   "vauth/gsasl.c",          "vauth/krb5_gssapi.c",
+            "vauth/krb5_sspi.c",     "vauth/ntlm.c",           "vauth/ntlm_sspi.c",
+            "vauth/oauth2.c",        "vauth/spnego_gssapi.c",  "vauth/spnego_sspi.c",
+            "vauth/vauth.c",         "version.c",              "vquic/curl_ngtcp2.c",
+            "vquic/curl_osslq.c",    "vquic/curl_quiche.c",    "vquic/vquic-tls.c",
+            "vquic/vquic.c",         "vssh/libssh.c",          "vssh/libssh2.c",
+            "vssh/vssh.c",           "vtls/apple.c",           "vtls/cipher_suite.c",
+            "vtls/gtls.c",           "vtls/hostcheck.c",       "vtls/keylog.c",
+            "vtls/mbedtls.c",        "vtls/openssl.c",         "vtls/rustls.c",
+            "vtls/schannel.c",       "vtls/schannel_verify.c", "vtls/vtls.c",
+            "vtls/vtls_scache.c",    "vtls/vtls_spack.c",      "vtls/wolfssl.c",
+            "vtls/x509asn1.c",       "ws.c",
+        },
+    });
+
+    return lib;
 }
+
+const Manifest = struct {
+    version: []const u8,
+    minimum_zig_version: []const u8,
+
+    fn init(b: *std.Build) Manifest {
+        const input = @embedFile("build.zig.zon");
+
+        var diagnostics: std.zon.parse.Diagnostics = .{};
+        defer diagnostics.deinit(b.allocator);
+
+        return std.zon.parse.fromSlice(Manifest, b.allocator, input, &diagnostics, .{
+            .free_on_error = true,
+            .ignore_unknown_fields = true,
+        }) catch |err| {
+            switch (err) {
+                error.OutOfMemory => @panic("OOM"),
+                error.ParseZon => {
+                    std.debug.print("Parse diagnostics:\n{f}\n", .{diagnostics});
+                    std.process.exit(1);
+                },
             }
+        };
+    }
+};

build.zig.zon

@@ -1,22 +1,36 @@
 .{
     .name = .browser,
-    .paths = .{""},
     .version = "0.0.0",
-    .fingerprint = 0xda130f3af836cea0,
+    .fingerprint = 0xda130f3af836cea0, // Changing this has security and trust implications.
+    .minimum_zig_version = "0.15.2",
     .dependencies = .{
-        .tls = .{
-            .url = "https://github.com/ianic/tls.zig/archive/b29a8b45fc59fc2d202769c4f54509bb9e17d0a2.tar.gz",
-            .hash = "tls-0.1.0-ER2e0uAxBQDm_TmSDdbiiyvAZoh4ejlDD4hW8Fl813xE",
-        },
-        .tigerbeetle_io = .{
-            .url = "https://github.com/lightpanda-io/tigerbeetle-io/archive/61d9652f1a957b7f4db723ea6aa0ce9635e840ce.tar.gz",
-            .hash = "tigerbeetle_io-0.0.0-ViLgxpyRBAB5BMfIcj3KMXfbJzwARs9uSl8aRy2OXULd",
-        },
         .v8 = .{
-            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/1d25fcf3ced688adca3c7a95a138771e4ebba692.tar.gz",
-            .hash = "v8-0.0.0-xddH61eyAwDICIkLAkfQcxsX4TMCKY80QiSUgNBQqx-u",
+            .url = "https://github.com/lightpanda-io/zig-v8-fork/archive/refs/tags/v0.3.1.tar.gz",
+            .hash = "v8-0.0.0-xddH64J7BAC81mkf6G9RbEJxS-W3TIRl5iFnShwbqCqy",
+
         },
         //.v8 = .{ .path = "../zig-v8-fork" },
-        //.tigerbeetle_io = .{ .path = "../tigerbeetle-io" },
+        .brotli = .{
+            // v1.2.0
+            .url = "https://github.com/google/brotli/archive/028fb5a23661f123017c060daa546b55cf4bde29.tar.gz",
+            .hash = "N-V-__8AAJudKgCQCuIiH6MJjAiIJHfg_tT_Ew-0vZwVkCo_",
         },
+        .zlib = .{
+            .url = "https://github.com/madler/zlib/releases/download/v1.3.2/zlib-1.3.2.tar.gz",
+            .hash = "N-V-__8AAJ2cNgAgfBtAw33Bxfu1IWISDeKKSr3DAqoAysIJ",
+        },
+        .nghttp2 = .{
+            .url = "https://github.com/nghttp2/nghttp2/releases/download/v1.68.0/nghttp2-1.68.0.tar.gz",
+            .hash = "N-V-__8AAL15vQCI63ZL6Zaz5hJg6JTEgYXGbLnMFSnf7FT3",
+        },
+        .@"boringssl-zig" = .{
+            .url = "git+https://github.com/Syndica/boringssl-zig.git#c53df00d06b02b755ad88bbf4d1202ed9687b096",
+            .hash = "boringssl-0.1.0-VtJeWehMAAA4RNnwRnzEvKcS9rjsR1QVRw1uJrwXxmVK",
+        },
+        .curl = .{
+            .url = "https://github.com/curl/curl/releases/download/curl-8_18_0/curl-8.18.0.tar.gz",
+            .hash = "N-V-__8AALp9QAGn6CCHZ6fK_FfMyGtG824LSHYHHasM3w-y",
+        },
+    },
+    .paths = .{""},
 }

flake.lock

@@ -1,5 +1,42 @@
 {
   "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1770708269,
+        "narHash": "sha256-OnZW86app7hHJJoB5lC9GNXY5QBBIESJB+sIdwEyld0=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "6b5325a017a9a9fe7e6252ccac3680cc7181cd63",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -18,13 +55,52 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "zlsPkg",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1748964450,
-        "narHash": "sha256-ZouDiXkUk8mkMnah10QcoQ9Nu6UW6AFAHLScS3En6aI=",
+        "lastModified": 1768649915,
+        "narHash": "sha256-jc21hKogFnxU7KXSVTRmxC7u5D4RHwm9BAvDf5/Z1Uo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9ff500cd9e123f46c55855eca64beccead29b152",
+        "rev": "3e3f3c7f9977dc123c23ee21e8085ed63daf8c37",
         "type": "github"
       },
       "original": {
@@ -36,8 +112,28 @@
     },
     "root": {
       "inputs": {
+        "fenix": "fenix",
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "zigPkgs": "zigPkgs",
+        "zlsPkg": "zlsPkg"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1770668050,
+        "narHash": "sha256-Q05yaIZtQrBKHpyWaPmyJmDRj0lojnVf8nUFE0vydcY=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "9efc1f709f3c8134c3acac5d3592a8e4c184a0c6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
       }
     },
     "systems": {
@@ -54,6 +150,68 @@
         "repo": "default",
         "type": "github"
       }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "zigPkgs": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1770598090,
+        "narHash": "sha256-k+82IDgTd9o5sxHIqGlvfwseKln3Ejx1edGtDltuPXo=",
+        "owner": "mitchellh",
+        "repo": "zig-overlay",
+        "rev": "142495696982c88edddc8e17e4da90d8164acadf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mitchellh",
+        "repo": "zig-overlay",
+        "type": "github"
+      }
+    },
+    "zlsPkg": {
+      "inputs": {
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "zig-overlay": [
+          "zigPkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1756048867,
+        "narHash": "sha256-GFzSHUljcxy7sM1PaabbkQUdUnLwpherekPWJFxXtnk=",
+        "owner": "zigtools",
+        "repo": "zls",
+        "rev": "ce6c8f02c78e622421cfc2405c67c5222819ec03",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zigtools",
+        "ref": "0.15.0",
+        "repo": "zls",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -3,22 +3,47 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/release-25.05";
+
+    zigPkgs.url = "github:mitchellh/zig-overlay";
+    zigPkgs.inputs.nixpkgs.follows = "nixpkgs";
+
+    zlsPkg.url = "github:zigtools/zls/0.15.0";
+    zlsPkg.inputs.zig-overlay.follows = "zigPkgs";
+    zlsPkg.inputs.nixpkgs.follows = "nixpkgs";
+
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
     flake-utils.url = "github:numtide/flake-utils";
   };
 
   outputs =
     {
       nixpkgs,
+      zigPkgs,
+      zlsPkg,
+      fenix,
       flake-utils,
       ...
     }:
     flake-utils.lib.eachDefaultSystem (
       system:
       let
+        overlays = [
+          (final: prev: {
+            zigpkgs = zigPkgs.packages.${prev.system};
+            zls = zlsPkg.packages.${prev.system}.default;
+          })
+        ];
+
         pkgs = import nixpkgs {
-          inherit system;
+          inherit system overlays;
         };
 
+        rustToolchain = fenix.packages.${system}.stable.toolchain;
+
         # We need crtbeginS.o for building.
         crtFiles = pkgs.runCommand "crt-files" { } ''
           mkdir -p $out/lib
@@ -32,8 +57,9 @@
           targetPkgs =
             pkgs: with pkgs; [
               # Build Tools
-              zig
+              zigpkgs."0.15.2"
               zls
+              rustToolchain
               python3
               pkg-config
               cmake

src/App.zig

@@ -0,0 +1,113 @@
+// Copyright (C) 2023-2026  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+
+const Allocator = std.mem.Allocator;
+
+const log = @import("log.zig");
+const Config = @import("Config.zig");
+const Snapshot = @import("browser/js/Snapshot.zig");
+const Platform = @import("browser/js/Platform.zig");
+const Telemetry = @import("telemetry/telemetry.zig").Telemetry;
+const RobotStore = @import("browser/Robots.zig").RobotStore;
+
+pub const Http = @import("http/Http.zig");
+pub const ArenaPool = @import("ArenaPool.zig");
+
+const App = @This();
+
+http: Http,
+config: *const Config,
+platform: Platform,
+snapshot: Snapshot,
+telemetry: Telemetry,
+allocator: Allocator,
+arena_pool: ArenaPool,
+robots: RobotStore,
+app_dir_path: ?[]const u8,
+shutdown: bool = false,
+
+pub fn init(allocator: Allocator, config: *const Config) !*App {
+    const app = try allocator.create(App);
+    errdefer allocator.destroy(app);
+
+    app.config = config;
+    app.allocator = allocator;
+
+    app.robots = RobotStore.init(allocator);
+
+    app.http = try Http.init(allocator, &app.robots, config);
+    errdefer app.http.deinit();
+
+    app.platform = try Platform.init();
+    errdefer app.platform.deinit();
+
+    app.snapshot = try Snapshot.load();
+    errdefer app.snapshot.deinit();
+
+    app.app_dir_path = getAndMakeAppDir(allocator);
+
+    app.telemetry = try Telemetry.init(app, config.mode);
+    errdefer app.telemetry.deinit();
+
+    app.arena_pool = ArenaPool.init(allocator, 512, 1024 * 16);
+    errdefer app.arena_pool.deinit();
+
+    return app;
+}
+
+pub fn deinit(self: *App) void {
+    if (@atomicRmw(bool, &self.shutdown, .Xchg, true, .monotonic)) {
+        return;
+    }
+
+    const allocator = self.allocator;
+    if (self.app_dir_path) |app_dir_path| {
+        allocator.free(app_dir_path);
+        self.app_dir_path = null;
+    }
+    self.telemetry.deinit();
+    self.robots.deinit();
+    self.http.deinit();
+    self.snapshot.deinit();
+    self.platform.deinit();
+    self.arena_pool.deinit();
+
+    allocator.destroy(self);
+}
+
+fn getAndMakeAppDir(allocator: Allocator) ?[]const u8 {
+    if (@import("builtin").is_test) {
+        return allocator.dupe(u8, "/tmp") catch unreachable;
+    }
+    const app_dir_path = std.fs.getAppDataDir(allocator, "lightpanda") catch |err| {
+        log.warn(.app, "get data dir", .{ .err = err });
+        return null;
+    };
+
+    std.fs.cwd().makePath(app_dir_path) catch |err| switch (err) {
+        error.PathAlreadyExists => return app_dir_path,
+        else => {
+            allocator.free(app_dir_path);
+            log.warn(.app, "create data dir", .{ .err = err, .path = app_dir_path });
+            return null;
+        },
+    };
+    return app_dir_path;
+}

src/ArenaPool.zig

@@ -0,0 +1,212 @@
+// Copyright (C) 2023-2026  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+
+const Allocator = std.mem.Allocator;
+const ArenaAllocator = std.heap.ArenaAllocator;
+
+const ArenaPool = @This();
+
+allocator: Allocator,
+retain_bytes: usize,
+free_list_len: u16 = 0,
+free_list: ?*Entry = null,
+free_list_max: u16,
+entry_pool: std.heap.MemoryPool(Entry),
+mutex: std.Thread.Mutex = .{},
+
+const Entry = struct {
+    next: ?*Entry,
+    arena: ArenaAllocator,
+};
+
+pub fn init(allocator: Allocator, free_list_max: u16, retain_bytes: usize) ArenaPool {
+    return .{
+        .allocator = allocator,
+        .free_list_max = free_list_max,
+        .retain_bytes = retain_bytes,
+        .entry_pool = .init(allocator),
+    };
+}
+
+pub fn deinit(self: *ArenaPool) void {
+    var entry = self.free_list;
+    while (entry) |e| {
+        entry = e.next;
+        e.arena.deinit();
+    }
+    self.entry_pool.deinit();
+}
+
+pub fn acquire(self: *ArenaPool) !Allocator {
+    self.mutex.lock();
+    defer self.mutex.unlock();
+
+    if (self.free_list) |entry| {
+        self.free_list = entry.next;
+        self.free_list_len -= 1;
+        return entry.arena.allocator();
+    }
+
+    const entry = try self.entry_pool.create();
+    entry.* = .{
+        .next = null,
+        .arena = ArenaAllocator.init(self.allocator),
+    };
+
+    return entry.arena.allocator();
+}
+
+pub fn release(self: *ArenaPool, allocator: Allocator) void {
+    const arena: *std.heap.ArenaAllocator = @ptrCast(@alignCast(allocator.ptr));
+    const entry: *Entry = @fieldParentPtr("arena", arena);
+
+    // Reset the arena before acquiring the lock to minimize lock hold time
+    _ = arena.reset(.{ .retain_with_limit = self.retain_bytes });
+
+    self.mutex.lock();
+    defer self.mutex.unlock();
+
+    const free_list_len = self.free_list_len;
+    if (free_list_len == self.free_list_max) {
+        arena.deinit();
+        self.entry_pool.destroy(entry);
+        return;
+    }
+
+    entry.next = self.free_list;
+    self.free_list_len = free_list_len + 1;
+    self.free_list = entry;
+}
+
+pub fn reset(_: *const ArenaPool, allocator: Allocator, retain: usize) void {
+    const arena: *std.heap.ArenaAllocator = @ptrCast(@alignCast(allocator.ptr));
+    _ = arena.reset(.{ .retain_with_limit = retain });
+}
+
+const testing = std.testing;
+
+test "arena pool - basic acquire and use" {
+    var pool = ArenaPool.init(testing.allocator, 512, 1024 * 16);
+    defer pool.deinit();
+
+    const alloc = try pool.acquire();
+    const buf = try alloc.alloc(u8, 64);
+    @memset(buf, 0xAB);
+    try testing.expectEqual(@as(u8, 0xAB), buf[0]);
+
+    pool.release(alloc);
+}
+
+test "arena pool - reuse entry after release" {
+    var pool = ArenaPool.init(testing.allocator, 512, 1024 * 16);
+    defer pool.deinit();
+
+    const alloc1 = try pool.acquire();
+    try testing.expectEqual(@as(u16, 0), pool.free_list_len);
+
+    pool.release(alloc1);
+    try testing.expectEqual(@as(u16, 1), pool.free_list_len);
+
+    // The same entry should be returned from the free list.
+    const alloc2 = try pool.acquire();
+    try testing.expectEqual(@as(u16, 0), pool.free_list_len);
+    try testing.expectEqual(alloc1.ptr, alloc2.ptr);
+
+    pool.release(alloc2);
+}
+
+test "arena pool - multiple concurrent arenas" {
+    var pool = ArenaPool.init(testing.allocator, 512, 1024 * 16);
+    defer pool.deinit();
+
+    const a1 = try pool.acquire();
+    const a2 = try pool.acquire();
+    const a3 = try pool.acquire();
+
+    // All three must be distinct arenas.
+    try testing.expect(a1.ptr != a2.ptr);
+    try testing.expect(a2.ptr != a3.ptr);
+    try testing.expect(a1.ptr != a3.ptr);
+
+    _ = try a1.alloc(u8, 16);
+    _ = try a2.alloc(u8, 32);
+    _ = try a3.alloc(u8, 48);
+
+    pool.release(a1);
+    pool.release(a2);
+    pool.release(a3);
+
+    try testing.expectEqual(@as(u16, 3), pool.free_list_len);
+}
+
+test "arena pool - free list respects max limit" {
+    // Cap the free list at 1 so the second release discards its arena.
+    var pool = ArenaPool.init(testing.allocator, 1, 1024 * 16);
+    defer pool.deinit();
+
+    const a1 = try pool.acquire();
+    const a2 = try pool.acquire();
+
+    pool.release(a1);
+    try testing.expectEqual(@as(u16, 1), pool.free_list_len);
+
+    // The free list is full; a2's arena should be destroyed, not queued.
+    pool.release(a2);
+    try testing.expectEqual(@as(u16, 1), pool.free_list_len);
+}
+
+test "arena pool - reset clears memory without releasing" {
+    var pool = ArenaPool.init(testing.allocator, 512, 1024 * 16);
+    defer pool.deinit();
+
+    const alloc = try pool.acquire();
+
+    const buf = try alloc.alloc(u8, 128);
+    @memset(buf, 0xFF);
+
+    // reset() frees arena memory but keeps the allocator in-flight.
+    pool.reset(alloc, 0);
+
+    // The free list must stay empty; the allocator was not released.
+    try testing.expectEqual(@as(u16, 0), pool.free_list_len);
+
+    // Allocating again through the same arena must still work.
+    const buf2 = try alloc.alloc(u8, 64);
+    @memset(buf2, 0x00);
+    try testing.expectEqual(@as(u8, 0x00), buf2[0]);
+
+    pool.release(alloc);
+}
+
+test "arena pool - deinit with entries in free list" {
+    // Verifies that deinit properly cleans up free-listed arenas (no leaks
+    // detected by the test allocator).
+    var pool = ArenaPool.init(testing.allocator, 512, 1024 * 16);
+
+    const a1 = try pool.acquire();
+    const a2 = try pool.acquire();
+    _ = try a1.alloc(u8, 256);
+    _ = try a2.alloc(u8, 512);
+    pool.release(a1);
+    pool.release(a2);
+    try testing.expectEqual(@as(u16, 2), pool.free_list_len);
+
+    pool.deinit();
+}

src/Config.zig

@@ -0,0 +1,849 @@
+// Copyright (C) 2023-2026  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const builtin = @import("builtin");
+const Allocator = std.mem.Allocator;
+
+const log = @import("log.zig");
+const dump = @import("browser/dump.zig");
+
+pub const RunMode = enum {
+    help,
+    fetch,
+    serve,
+    version,
+    mcp,
+};
+
+pub const CDP_MAX_HTTP_REQUEST_SIZE = 4096;
+
+// max message size
+// +14 for max websocket payload overhead
+// +140 for the max control packet that might be interleaved in a message
+pub const CDP_MAX_MESSAGE_SIZE = 512 * 1024 + 14 + 140;
+
+mode: Mode,
+exec_name: []const u8,
+http_headers: HttpHeaders,
+
+const Config = @This();
+
+pub fn init(allocator: Allocator, exec_name: []const u8, mode: Mode) !Config {
+    var config = Config{
+        .mode = mode,
+        .exec_name = exec_name,
+        .http_headers = undefined,
+    };
+    config.http_headers = try HttpHeaders.init(allocator, &config);
+    return config;
+}
+
+pub fn deinit(self: *const Config, allocator: Allocator) void {
+    self.http_headers.deinit(allocator);
+}
+
+pub fn tlsVerifyHost(self: *const Config) bool {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.tls_verify_host,
+        else => unreachable,
+    };
+}
+
+pub fn obeyRobots(self: *const Config) bool {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.obey_robots,
+        else => unreachable,
+    };
+}
+
+pub fn httpProxy(self: *const Config) ?[:0]const u8 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.http_proxy,
+        else => unreachable,
+    };
+}
+
+pub fn proxyBearerToken(self: *const Config) ?[:0]const u8 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.proxy_bearer_token,
+        .help, .version => null,
+    };
+}
+
+pub fn httpMaxConcurrent(self: *const Config) u8 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.http_max_concurrent orelse 10,
+        else => unreachable,
+    };
+}
+
+pub fn httpMaxHostOpen(self: *const Config) u8 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.http_max_host_open orelse 4,
+        else => unreachable,
+    };
+}
+
+pub fn httpConnectTimeout(self: *const Config) u31 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.http_connect_timeout orelse 0,
+        else => unreachable,
+    };
+}
+
+pub fn httpTimeout(self: *const Config) u31 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.http_timeout orelse 5000,
+        else => unreachable,
+    };
+}
+
+pub fn httpMaxRedirects(_: *const Config) u8 {
+    return 10;
+}
+
+pub fn httpMaxResponseSize(self: *const Config) ?usize {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.http_max_response_size,
+        else => unreachable,
+    };
+}
+
+pub fn logLevel(self: *const Config) ?log.Level {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.log_level,
+        else => unreachable,
+    };
+}
+
+pub fn logFormat(self: *const Config) ?log.Format {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.log_format,
+        else => unreachable,
+    };
+}
+
+pub fn logFilterScopes(self: *const Config) ?[]const log.Scope {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.log_filter_scopes,
+        else => unreachable,
+    };
+}
+
+pub fn userAgentSuffix(self: *const Config) ?[]const u8 {
+    return switch (self.mode) {
+        inline .serve, .fetch, .mcp => |opts| opts.common.user_agent_suffix,
+        .help, .version => null,
+    };
+}
+
+pub fn maxConnections(self: *const Config) u16 {
+    return switch (self.mode) {
+        .serve => |opts| opts.cdp_max_connections,
+        else => unreachable,
+    };
+}
+
+pub fn maxPendingConnections(self: *const Config) u31 {
+    return switch (self.mode) {
+        .serve => |opts| opts.cdp_max_pending_connections,
+        else => unreachable,
+    };
+}
+
+pub const Mode = union(RunMode) {
+    help: bool, // false when being printed because of an error
+    fetch: Fetch,
+    serve: Serve,
+    version: void,
+    mcp: Mcp,
+};
+
+pub const Serve = struct {
+    host: []const u8 = "127.0.0.1",
+    port: u16 = 9222,
+    timeout: u31 = 10,
+    cdp_max_connections: u16 = 16,
+    cdp_max_pending_connections: u16 = 128,
+    common: Common = .{},
+};
+
+pub const Mcp = struct {
+    common: Common = .{},
+};
+
+pub const DumpFormat = enum {
+    html,
+    markdown,
+    wpt,
+};
+
+pub const Fetch = struct {
+    url: [:0]const u8,
+    dump_mode: ?DumpFormat = null,
+    common: Common = .{},
+    with_base: bool = false,
+    with_frames: bool = false,
+    strip: dump.Opts.Strip = .{},
+};
+
+pub const Common = struct {
+    obey_robots: bool = false,
+    proxy_bearer_token: ?[:0]const u8 = null,
+    http_proxy: ?[:0]const u8 = null,
+    http_max_concurrent: ?u8 = null,
+    http_max_host_open: ?u8 = null,
+    http_timeout: ?u31 = null,
+    http_connect_timeout: ?u31 = null,
+    http_max_response_size: ?usize = null,
+    tls_verify_host: bool = true,
+    log_level: ?log.Level = null,
+    log_format: ?log.Format = null,
+    log_filter_scopes: ?[]log.Scope = null,
+    user_agent_suffix: ?[]const u8 = null,
+};
+
+/// Pre-formatted HTTP headers for reuse across Http and Client.
+/// Must be initialized with an allocator that outlives all HTTP connections.
+pub const HttpHeaders = struct {
+    const user_agent_base: [:0]const u8 = "Lightpanda/1.0";
+
+    user_agent: [:0]const u8, // User agent value (e.g. "Lightpanda/1.0")
+    user_agent_header: [:0]const u8,
+
+    proxy_bearer_header: ?[:0]const u8,
+
+    pub fn init(allocator: Allocator, config: *const Config) !HttpHeaders {
+        const user_agent: [:0]const u8 = if (config.userAgentSuffix()) |suffix|
+            try std.fmt.allocPrintSentinel(allocator, "{s} {s}", .{ user_agent_base, suffix }, 0)
+        else
+            user_agent_base;
+        errdefer if (config.userAgentSuffix() != null) allocator.free(user_agent);
+
+        const user_agent_header = try std.fmt.allocPrintSentinel(allocator, "User-Agent: {s}", .{user_agent}, 0);
+        errdefer allocator.free(user_agent_header);
+
+        const proxy_bearer_header: ?[:0]const u8 = if (config.proxyBearerToken()) |token|
+            try std.fmt.allocPrintSentinel(allocator, "Proxy-Authorization: Bearer {s}", .{token}, 0)
+        else
+            null;
+
+        return .{
+            .user_agent = user_agent,
+            .user_agent_header = user_agent_header,
+            .proxy_bearer_header = proxy_bearer_header,
+        };
+    }
+
+    pub fn deinit(self: *const HttpHeaders, allocator: Allocator) void {
+        if (self.proxy_bearer_header) |hdr| {
+            allocator.free(hdr);
+        }
+        allocator.free(self.user_agent_header);
+        if (self.user_agent.ptr != user_agent_base.ptr) {
+            allocator.free(self.user_agent);
+        }
+    }
+};
+
+pub fn printUsageAndExit(self: *const Config, success: bool) void {
+    //                                                                     MAX_HELP_LEN|
+    const common_options =
+        \\
+        \\--insecure_disable_tls_host_verification
+        \\                Disables host verification on all HTTP requests. This is an
+        \\                advanced option which should only be set if you understand
+        \\                and accept the risk of disabling host verification.
+        \\
+        \\--obey_robots
+        \\                Fetches and obeys the robots.txt (if available) of the web pages
+        \\                we make requests towards.
+        \\                Defaults to false.
+        \\
+        \\--http_proxy    The HTTP proxy to use for all HTTP requests.
+        \\                A username:password can be included for basic authentication.
+        \\                Defaults to none.
+        \\
+        \\--proxy_bearer_token
+        \\                The <token> to send for bearer authentication with the proxy
+        \\                Proxy-Authorization: Bearer <token>
+        \\
+        \\--http_max_concurrent
+        \\                The maximum number of concurrent HTTP requests.
+        \\                Defaults to 10.
+        \\
+        \\--http_max_host_open
+        \\                The maximum number of open connection to a given host:port.
+        \\                Defaults to 4.
+        \\
+        \\--http_connect_timeout
+        \\                The time, in milliseconds, for establishing an HTTP connection
+        \\                before timing out. 0 means it never times out.
+        \\                Defaults to 0.
+        \\
+        \\--http_timeout
+        \\                The maximum time, in milliseconds, the transfer is allowed
+        \\                to complete. 0 means it never times out.
+        \\                Defaults to 10000.
+        \\
+        \\--http_max_response_size
+        \\                Limits the acceptable response size for any request
+        \\                (e.g. XHR, fetch, script loading, ...).
+        \\                Defaults to no limit.
+        \\
+        \\--log_level     The log level: debug, info, warn, error or fatal.
+        \\                Defaults to
+    ++ (if (builtin.mode == .Debug) " info." else "warn.") ++
+        \\
+        \\
+        \\--log_format    The log format: pretty or logfmt.
+        \\                Defaults to
+    ++ (if (builtin.mode == .Debug) " pretty." else " logfmt.") ++
+        \\
+        \\
+        \\--log_filter_scopes
+        \\                Filter out too verbose logs per scope:
+        \\                http, unknown_prop, event, ...
+        \\
+        \\--user_agent_suffix
+        \\                Suffix to append to the Lightpanda/X.Y User-Agent
+        \\
+    ;
+
+    //                                                                     MAX_HELP_LEN|
+    const usage =
+        \\usage: {s} command [options] [URL]
+        \\
+        \\Command can be either 'fetch', 'serve', 'mcp' or 'help'
+        \\
+        \\fetch command
+        \\Fetches the specified URL
+        \\Example: {s} fetch --dump html https://lightpanda.io/
+        \\
+        \\Options:
+        \\--dump          Dumps document to stdout.
+        \\                Argument must be 'html' or 'markdown'.
+        \\                Defaults to no dump.
+        \\
+        \\--strip_mode    Comma separated list of tag groups to remove from dump
+        \\                the dump. e.g. --strip_mode js,css
+        \\                  - "js" script and link[as=script, rel=preload]
+        \\                  - "ui" includes img, picture, video, css and svg
+        \\                  - "css" includes style and link[rel=stylesheet]
+        \\                  - "full" includes js, ui and css
+        \\
+        \\--with_base     Add a <base> tag in dump. Defaults to false.
+        \\
+        \\--with_frames   Includes the contents of iframes. Defaults to false.
+        \\
+    ++ common_options ++
+        \\
+        \\serve command
+        \\Starts a websocket CDP server
+        \\Example: {s} serve --host 127.0.0.1 --port 9222
+        \\
+        \\Options:
+        \\--host          Host of the CDP server
+        \\                Defaults to "127.0.0.1"
+        \\
+        \\--port          Port of the CDP server
+        \\                Defaults to 9222
+        \\
+        \\--timeout       Inactivity timeout in seconds before disconnecting clients
+        \\                Defaults to 10 (seconds). Limited to 604800 (1 week).
+        \\
+        \\--cdp_max_connections
+        \\                Maximum number of simultaneous CDP connections.
+        \\                Defaults to 16.
+        \\
+        \\--cdp_max_pending_connections
+        \\                Maximum pending connections in the accept queue.
+        \\                Defaults to 128.
+        \\
+    ++ common_options ++
+        \\
+        \\mcp command
+        \\Starts an MCP (Model Context Protocol) server over stdio
+        \\Example: {s} mcp
+        \\
+    ++ common_options ++
+        \\
+        \\version command
+        \\Displays the version of {s}
+        \\
+        \\help command
+        \\Displays this message
+        \\
+    ;
+    std.debug.print(usage, .{ self.exec_name, self.exec_name, self.exec_name, self.exec_name, self.exec_name });
+    if (success) {
+        return std.process.cleanExit();
+    }
+    std.process.exit(1);
+}
+
+pub fn parseArgs(allocator: Allocator) !Config {
+    var args = try std.process.argsWithAllocator(allocator);
+    defer args.deinit();
+
+    const exec_name = try allocator.dupe(u8, std.fs.path.basename(args.next().?));
+
+    const mode_string = args.next() orelse "";
+    const run_mode = std.meta.stringToEnum(RunMode, mode_string) orelse blk: {
+        const inferred_mode = inferMode(mode_string) orelse
+            return init(allocator, exec_name, .{ .help = false });
+        // "command" wasn't a command but an option. We can't reset args, but
+        // we can create a new one. Not great, but this fallback is temporary
+        // as we transition to this command mode approach.
+        args.deinit();
+
+        args = try std.process.argsWithAllocator(allocator);
+        // skip the exec_name
+        _ = args.skip();
+
+        break :blk inferred_mode;
+    };
+
+    const mode: Mode = switch (run_mode) {
+        .help => .{ .help = true },
+        .serve => .{ .serve = parseServeArgs(allocator, &args) catch
+            return init(allocator, exec_name, .{ .help = false }) },
+        .fetch => .{ .fetch = parseFetchArgs(allocator, &args) catch
+            return init(allocator, exec_name, .{ .help = false }) },
+        .mcp => .{ .mcp = parseMcpArgs(allocator, &args) catch
+            return init(allocator, exec_name, .{ .help = false }) },
+        .version => .{ .version = {} },
+    };
+    return init(allocator, exec_name, mode);
+}
+
+fn inferMode(opt: []const u8) ?RunMode {
+    if (opt.len == 0) {
+        return .serve;
+    }
+
+    if (std.mem.startsWith(u8, opt, "--") == false) {
+        return .fetch;
+    }
+
+    if (std.mem.eql(u8, opt, "--dump")) {
+        return .fetch;
+    }
+
+    if (std.mem.eql(u8, opt, "--noscript")) {
+        return .fetch;
+    }
+
+    if (std.mem.eql(u8, opt, "--strip_mode")) {
+        return .fetch;
+    }
+
+    if (std.mem.eql(u8, opt, "--with_base")) {
+        return .fetch;
+    }
+
+    if (std.mem.eql(u8, opt, "--with_frames")) {
+        return .fetch;
+    }
+
+    if (std.mem.eql(u8, opt, "--host")) {
+        return .serve;
+    }
+
+    if (std.mem.eql(u8, opt, "--port")) {
+        return .serve;
+    }
+
+    if (std.mem.eql(u8, opt, "--timeout")) {
+        return .serve;
+    }
+
+    return null;
+}
+
+fn parseServeArgs(
+    allocator: Allocator,
+    args: *std.process.ArgIterator,
+) !Serve {
+    var serve: Serve = .{};
+
+    while (args.next()) |opt| {
+        if (std.mem.eql(u8, "--host", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--host" });
+                return error.InvalidArgument;
+            };
+            serve.host = try allocator.dupe(u8, str);
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--port", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--port" });
+                return error.InvalidArgument;
+            };
+
+            serve.port = std.fmt.parseInt(u16, str, 10) catch |err| {
+                log.fatal(.app, "invalid argument value", .{ .arg = "--port", .err = err });
+                return error.InvalidArgument;
+            };
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--timeout", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--timeout" });
+                return error.InvalidArgument;
+            };
+
+            serve.timeout = std.fmt.parseInt(u31, str, 10) catch |err| {
+                log.fatal(.app, "invalid argument value", .{ .arg = "--timeout", .err = err });
+                return error.InvalidArgument;
+            };
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--cdp_max_connections", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--cdp_max_connections" });
+                return error.InvalidArgument;
+            };
+
+            serve.cdp_max_connections = std.fmt.parseInt(u16, str, 10) catch |err| {
+                log.fatal(.app, "invalid argument value", .{ .arg = "--cdp_max_connections", .err = err });
+                return error.InvalidArgument;
+            };
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--cdp_max_pending_connections", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--cdp_max_pending_connections" });
+                return error.InvalidArgument;
+            };
+
+            serve.cdp_max_pending_connections = std.fmt.parseInt(u16, str, 10) catch |err| {
+                log.fatal(.app, "invalid argument value", .{ .arg = "--cdp_max_pending_connections", .err = err });
+                return error.InvalidArgument;
+            };
+            continue;
+        }
+
+        if (try parseCommonArg(allocator, opt, args, &serve.common)) {
+            continue;
+        }
+
+        log.fatal(.app, "unknown argument", .{ .mode = "serve", .arg = opt });
+        return error.UnkownOption;
+    }
+
+    return serve;
+}
+
+fn parseMcpArgs(
+    allocator: Allocator,
+    args: *std.process.ArgIterator,
+) !Mcp {
+    var mcp: Mcp = .{};
+
+    while (args.next()) |opt| {
+        if (try parseCommonArg(allocator, opt, args, &mcp.common)) {
+            continue;
+        }
+
+        log.fatal(.mcp, "unknown argument", .{ .mode = "mcp", .arg = opt });
+        return error.UnkownOption;
+    }
+
+    return mcp;
+}
+
+fn parseFetchArgs(
+    allocator: Allocator,
+    args: *std.process.ArgIterator,
+) !Fetch {
+    var dump_mode: ?DumpFormat = null;
+    var with_base: bool = false;
+    var with_frames: bool = false;
+    var url: ?[:0]const u8 = null;
+    var common: Common = .{};
+    var strip: dump.Opts.Strip = .{};
+
+    while (args.next()) |opt| {
+        if (std.mem.eql(u8, "--dump", opt)) {
+            var peek_args = args.*;
+            if (peek_args.next()) |next_arg| {
+                if (std.meta.stringToEnum(DumpFormat, next_arg)) |mode| {
+                    dump_mode = mode;
+                    _ = args.next();
+                } else {
+                    dump_mode = .html;
+                }
+            } else {
+                dump_mode = .html;
+            }
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--noscript", opt)) {
+            log.warn(.app, "deprecation warning", .{
+                .feature = "--noscript argument",
+                .hint = "use '--strip_mode js' instead",
+            });
+            strip.js = true;
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--with_base", opt)) {
+            with_base = true;
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--with_frames", opt)) {
+            with_frames = true;
+            continue;
+        }
+
+        if (std.mem.eql(u8, "--strip_mode", opt)) {
+            const str = args.next() orelse {
+                log.fatal(.app, "missing argument value", .{ .arg = "--strip_mode" });
+                return error.InvalidArgument;
+            };
+
+            var it = std.mem.splitScalar(u8, str, ',');
+            while (it.next()) |part| {
+                const trimmed = std.mem.trim(u8, part, &std.ascii.whitespace);
+                if (std.mem.eql(u8, trimmed, "js")) {
+                    strip.js = true;
+                } else if (std.mem.eql(u8, trimmed, "ui")) {
+                    strip.ui = true;
+                } else if (std.mem.eql(u8, trimmed, "css")) {
+                    strip.css = true;
+                } else if (std.mem.eql(u8, trimmed, "full")) {
+                    strip.js = true;
+                    strip.ui = true;
+                    strip.css = true;
+                } else {
+                    log.fatal(.app, "invalid option choice", .{ .arg = "--strip_mode", .value = trimmed });
+                }
+            }
+            continue;
+        }
+
+        if (try parseCommonArg(allocator, opt, args, &common)) {
+            continue;
+        }
+
+        if (std.mem.startsWith(u8, opt, "--")) {
+            log.fatal(.app, "unknown argument", .{ .mode = "fetch", .arg = opt });
+            return error.UnkownOption;
+        }
+
+        if (url != null) {
+            log.fatal(.app, "duplicate fetch url", .{ .help = "only 1 URL can be specified" });
+            return error.TooManyURLs;
+        }
+        url = try allocator.dupeZ(u8, opt);
+    }
+
+    if (url == null) {
+        log.fatal(.app, "missing fetch url", .{ .help = "URL to fetch must be provided" });
+        return error.MissingURL;
+    }
+
+    return .{
+        .url = url.?,
+        .dump_mode = dump_mode,
+        .strip = strip,
+        .common = common,
+        .with_base = with_base,
+        .with_frames = with_frames,
+    };
+}
+
+fn parseCommonArg(
+    allocator: Allocator,
+    opt: []const u8,
+    args: *std.process.ArgIterator,
+    common: *Common,
+) !bool {
+    if (std.mem.eql(u8, "--insecure_disable_tls_host_verification", opt)) {
+        common.tls_verify_host = false;
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--obey_robots", opt)) {
+        common.obey_robots = true;
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--http_proxy", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--http_proxy" });
+            return error.InvalidArgument;
+        };
+        common.http_proxy = try allocator.dupeZ(u8, str);
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--proxy_bearer_token", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--proxy_bearer_token" });
+            return error.InvalidArgument;
+        };
+        common.proxy_bearer_token = try allocator.dupeZ(u8, str);
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--http_max_concurrent", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--http_max_concurrent" });
+            return error.InvalidArgument;
+        };
+
+        common.http_max_concurrent = std.fmt.parseInt(u8, str, 10) catch |err| {
+            log.fatal(.app, "invalid argument value", .{ .arg = "--http_max_concurrent", .err = err });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--http_max_host_open", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--http_max_host_open" });
+            return error.InvalidArgument;
+        };
+
+        common.http_max_host_open = std.fmt.parseInt(u8, str, 10) catch |err| {
+            log.fatal(.app, "invalid argument value", .{ .arg = "--http_max_host_open", .err = err });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--http_connect_timeout", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--http_connect_timeout" });
+            return error.InvalidArgument;
+        };
+
+        common.http_connect_timeout = std.fmt.parseInt(u31, str, 10) catch |err| {
+            log.fatal(.app, "invalid argument value", .{ .arg = "--http_connect_timeout", .err = err });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--http_timeout", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--http_timeout" });
+            return error.InvalidArgument;
+        };
+
+        common.http_timeout = std.fmt.parseInt(u31, str, 10) catch |err| {
+            log.fatal(.app, "invalid argument value", .{ .arg = "--http_timeout", .err = err });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--http_max_response_size", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--http_max_response_size" });
+            return error.InvalidArgument;
+        };
+
+        common.http_max_response_size = std.fmt.parseInt(usize, str, 10) catch |err| {
+            log.fatal(.app, "invalid argument value", .{ .arg = "--http_max_response_size", .err = err });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--log_level", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--log_level" });
+            return error.InvalidArgument;
+        };
+
+        common.log_level = std.meta.stringToEnum(log.Level, str) orelse blk: {
+            if (std.mem.eql(u8, str, "error")) {
+                break :blk .err;
+            }
+            log.fatal(.app, "invalid option choice", .{ .arg = "--log_level", .value = str });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--log_format", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--log_format" });
+            return error.InvalidArgument;
+        };
+
+        common.log_format = std.meta.stringToEnum(log.Format, str) orelse {
+            log.fatal(.app, "invalid option choice", .{ .arg = "--log_format", .value = str });
+            return error.InvalidArgument;
+        };
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--log_filter_scopes", opt)) {
+        if (builtin.mode != .Debug) {
+            log.fatal(.app, "experimental", .{ .help = "log scope filtering is only available in debug builds" });
+            return false;
+        }
+
+        const str = args.next() orelse {
+            // disables the default filters
+            common.log_filter_scopes = &.{};
+            return true;
+        };
+
+        var arr: std.ArrayList(log.Scope) = .empty;
+
+        var it = std.mem.splitScalar(u8, str, ',');
+        while (it.next()) |part| {
+            try arr.append(allocator, std.meta.stringToEnum(log.Scope, part) orelse {
+                log.fatal(.app, "invalid option choice", .{ .arg = "--log_filter_scopes", .value = part });
+                return false;
+            });
+        }
+        common.log_filter_scopes = arr.items;
+        return true;
+    }
+
+    if (std.mem.eql(u8, "--user_agent_suffix", opt)) {
+        const str = args.next() orelse {
+            log.fatal(.app, "missing argument value", .{ .arg = "--user_agent_suffix" });
+            return error.InvalidArgument;
+        };
+        for (str) |c| {
+            if (!std.ascii.isPrint(c)) {
+                log.fatal(.app, "not printable character", .{ .arg = "--user_agent_suffix" });
+                return error.InvalidArgument;
+            }
+        }
+        common.user_agent_suffix = try allocator.dupe(u8, str);
+        return true;
+    }
+
+    return false;
+}

src/Notification.zig

@@ -0,0 +1,419 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const lp = @import("lightpanda");
+
+const log = @import("log.zig");
+const Page = @import("browser/Page.zig");
+const Transfer = @import("http/Client.zig").Transfer;
+
+const Allocator = std.mem.Allocator;
+
+const List = std.DoublyLinkedList;
+
+// Allows code to register for and emit events.
+// Keeps two lists
+// 1 - for a given event type, a linked list of all the listeners
+// 2 - for a given listener, a list of all it's registration
+// The 2nd one is so that a listener can unregister all of it's listeners
+// (there's currently no need for a listener to unregister only 1 or more
+// specific listener).
+//
+// Scoping is important. Imagine we created a global singleton registry, and our
+// CDP code registers for the "network_bytes_sent" event, because it needs to
+// send messages to the client when this happens. Our HTTP client could then
+// emit a "network_bytes_sent" message. It would be easy, and it would work.
+// That is, it would work until multiple CDP clients connect, and because
+// everything's just one big global, events from one CDP session would be sent
+// to all CDP clients.
+//
+// To avoid this, one way or another, we need scoping. We could still have
+// a global registry but every "register" and every "emit" has some type of
+// "scope". This would have a run-time cost and still require some coordination
+// between components to share a common scope.
+//
+// Instead, the approach that we take is to have a notification instance per
+// CDP connection (BrowserContext). Each CDP connection has its own notification
+// that is shared across all Sessions (tabs) within that connection. This ensures
+// proper isolation between different CDP clients while allowing a single client
+// to receive events from all its tabs.
+const Notification = @This();
+// Every event type (which are hard-coded), has a list of Listeners.
+// When the event happens, we dispatch to those listener.
+event_listeners: EventListeners,
+
+// list of listeners for a specified receiver
+// @intFromPtr(receiver) -> [listener1, listener2, ...]
+// Used when `unregisterAll` is called.
+listeners: std.AutoHashMapUnmanaged(usize, std.ArrayList(*Listener)),
+
+allocator: Allocator,
+mem_pool: std.heap.MemoryPool(Listener),
+
+const EventListeners = struct {
+    page_remove: List = .{},
+    page_created: List = .{},
+    page_navigate: List = .{},
+    page_navigated: List = .{},
+    page_network_idle: List = .{},
+    page_network_almost_idle: List = .{},
+    page_frame_created: List = .{},
+    http_request_fail: List = .{},
+    http_request_start: List = .{},
+    http_request_intercept: List = .{},
+    http_request_done: List = .{},
+    http_request_auth_required: List = .{},
+    http_response_data: List = .{},
+    http_response_header_done: List = .{},
+};
+
+const Events = union(enum) {
+    page_remove: PageRemove,
+    page_created: *Page,
+    page_navigate: *const PageNavigate,
+    page_navigated: *const PageNavigated,
+    page_network_idle: *const PageNetworkIdle,
+    page_network_almost_idle: *const PageNetworkAlmostIdle,
+    page_frame_created: *const PageFrameCreated,
+    http_request_fail: *const RequestFail,
+    http_request_start: *const RequestStart,
+    http_request_intercept: *const RequestIntercept,
+    http_request_auth_required: *const RequestAuthRequired,
+    http_request_done: *const RequestDone,
+    http_response_data: *const ResponseData,
+    http_response_header_done: *const ResponseHeaderDone,
+};
+const EventType = std.meta.FieldEnum(Events);
+
+pub const PageRemove = struct {};
+
+pub const PageNavigate = struct {
+    req_id: u32,
+    frame_id: u32,
+    timestamp: u64,
+    url: [:0]const u8,
+    opts: Page.NavigateOpts,
+};
+
+pub const PageNavigated = struct {
+    req_id: u32,
+    frame_id: u32,
+    timestamp: u64,
+    url: [:0]const u8,
+    opts: Page.NavigatedOpts,
+};
+
+pub const PageNetworkIdle = struct {
+    req_id: u32,
+    frame_id: u32,
+    timestamp: u64,
+};
+
+pub const PageNetworkAlmostIdle = struct {
+    req_id: u32,
+    frame_id: u32,
+    timestamp: u64,
+};
+
+pub const PageFrameCreated = struct {
+    frame_id: u32,
+    parent_id: u32,
+    timestamp: u64,
+};
+
+pub const RequestStart = struct {
+    transfer: *Transfer,
+};
+
+pub const RequestIntercept = struct {
+    transfer: *Transfer,
+    wait_for_interception: *bool,
+};
+
+pub const RequestAuthRequired = struct {
+    transfer: *Transfer,
+    wait_for_interception: *bool,
+};
+
+pub const ResponseData = struct {
+    data: []const u8,
+    transfer: *Transfer,
+};
+
+pub const ResponseHeaderDone = struct {
+    transfer: *Transfer,
+};
+
+pub const RequestDone = struct {
+    transfer: *Transfer,
+};
+
+pub const RequestFail = struct {
+    transfer: *Transfer,
+    err: anyerror,
+};
+
+pub fn init(allocator: Allocator) !*Notification {
+    const notification = try allocator.create(Notification);
+    errdefer allocator.destroy(notification);
+
+    notification.* = .{
+        .listeners = .{},
+        .event_listeners = .{},
+        .allocator = allocator,
+        .mem_pool = std.heap.MemoryPool(Listener).init(allocator),
+    };
+
+    return notification;
+}
+
+pub fn deinit(self: *Notification) void {
+    const allocator = self.allocator;
+
+    var it = self.listeners.valueIterator();
+    while (it.next()) |listener| {
+        listener.deinit(allocator);
+    }
+    self.listeners.deinit(allocator);
+    self.mem_pool.deinit();
+    allocator.destroy(self);
+}
+
+pub fn register(self: *Notification, comptime event: EventType, receiver: anytype, func: EventFunc(event)) !void {
+    var list = &@field(self.event_listeners, @tagName(event));
+
+    var listener = try self.mem_pool.create();
+    errdefer self.mem_pool.destroy(listener);
+
+    listener.* = .{
+        .node = .{},
+        .list = list,
+        .receiver = receiver,
+        .event = event,
+        .func = @ptrCast(func),
+        .struct_name = @typeName(@typeInfo(@TypeOf(receiver)).pointer.child),
+    };
+
+    const allocator = self.allocator;
+    const gop = try self.listeners.getOrPut(allocator, @intFromPtr(receiver));
+    if (gop.found_existing == false) {
+        gop.value_ptr.* = .{};
+    }
+    try gop.value_ptr.append(allocator, listener);
+
+    // we don't add this until we've successfully added the entry to
+    // self.listeners
+    list.append(&listener.node);
+}
+
+pub fn unregister(self: *Notification, comptime event: EventType, receiver: anytype) void {
+    var listeners = self.listeners.getPtr(@intFromPtr(receiver)) orelse return;
+
+    var i: usize = 0;
+    while (i < listeners.items.len) {
+        const listener = listeners.items[i];
+        if (listener.event != event) {
+            i += 1;
+            continue;
+        }
+        listener.list.remove(&listener.node);
+        self.mem_pool.destroy(listener);
+        _ = listeners.swapRemove(i);
+    }
+
+    if (listeners.items.len == 0) {
+        listeners.deinit(self.allocator);
+        const removed = self.listeners.remove(@intFromPtr(receiver));
+        lp.assert(removed == true, "Notification.unregister", .{ .type = event });
+    }
+}
+
+pub fn unregisterAll(self: *Notification, receiver: *anyopaque) void {
+    var kv = self.listeners.fetchRemove(@intFromPtr(receiver)) orelse return;
+    for (kv.value.items) |listener| {
+        listener.list.remove(&listener.node);
+        self.mem_pool.destroy(listener);
+    }
+    kv.value.deinit(self.allocator);
+}
+
+pub fn dispatch(self: *Notification, comptime event: EventType, data: ArgType(event)) void {
+    if (self.listeners.count() == 0) {
+        return;
+    }
+    const list = &@field(self.event_listeners, @tagName(event));
+
+    var node = list.first;
+    while (node) |n| {
+        const listener: *Listener = @fieldParentPtr("node", n);
+        const func: EventFunc(event) = @ptrCast(@alignCast(listener.func));
+        func(listener.receiver, data) catch |err| {
+            log.err(.app, "dispatch error", .{
+                .err = err,
+                .event = event,
+                .source = "notification",
+                .listener = listener.struct_name,
+            });
+        };
+        node = n.next;
+    }
+}
+
+// Given an event type enum, returns the type of arg the event emits
+fn ArgType(comptime event: Notification.EventType) type {
+    inline for (std.meta.fields(Notification.Events)) |f| {
+        if (std.mem.eql(u8, f.name, @tagName(event))) {
+            return f.type;
+        }
+    }
+    unreachable;
+}
+
+// Given an event type enum, returns the listening function type
+fn EventFunc(comptime event: Notification.EventType) type {
+    return *const fn (*anyopaque, ArgType(event)) anyerror!void;
+}
+
+// A listener. This is 1 receiver, with its function, and the linked list
+// node that goes in the appropriate EventListeners list.
+const Listener = struct {
+    // the receiver of the event, i.e. the self parameter to `func`
+    receiver: *anyopaque,
+
+    // the function to call
+    func: *const anyopaque,
+
+    // For logging slightly better error
+    struct_name: []const u8,
+
+    event: Notification.EventType,
+
+    // intrusive linked list node
+    node: List.Node,
+
+    // The event list this listener belongs to.
+    // We need this in order to be able to remove the node from the list
+    list: *List,
+};
+
+const testing = std.testing;
+test "Notification" {
+    var notifier = try Notification.init(testing.allocator);
+    defer notifier.deinit();
+
+    // noop
+    notifier.dispatch(.page_navigate, &.{
+        .frame_id = 0,
+        .req_id = 1,
+        .timestamp = 4,
+        .url = undefined,
+        .opts = .{},
+    });
+
+    var tc = TestClient{};
+
+    try notifier.register(.page_navigate, &tc, TestClient.pageNavigate);
+    notifier.dispatch(.page_navigate, &.{
+        .frame_id = 0,
+        .req_id = 1,
+        .timestamp = 4,
+        .url = undefined,
+        .opts = .{},
+    });
+    try testing.expectEqual(4, tc.page_navigate);
+
+    notifier.unregisterAll(&tc);
+    notifier.dispatch(.page_navigate, &.{
+        .frame_id = 0,
+        .req_id = 1,
+        .timestamp = 10,
+        .url = undefined,
+        .opts = .{},
+    });
+    try testing.expectEqual(4, tc.page_navigate);
+
+    try notifier.register(.page_navigate, &tc, TestClient.pageNavigate);
+    try notifier.register(.page_navigated, &tc, TestClient.pageNavigated);
+    notifier.dispatch(.page_navigate, &.{
+        .frame_id = 0,
+        .req_id = 1,
+        .timestamp = 10,
+        .url = undefined,
+        .opts = .{},
+    });
+    notifier.dispatch(.page_navigated, &.{ .frame_id = 0, .req_id = 1, .timestamp = 6, .url = undefined, .opts = .{} });
+    try testing.expectEqual(14, tc.page_navigate);
+    try testing.expectEqual(6, tc.page_navigated);
+
+    notifier.unregisterAll(&tc);
+    notifier.dispatch(.page_navigate, &.{
+        .frame_id = 0,
+        .req_id = 1,
+        .timestamp = 100,
+        .url = undefined,
+        .opts = .{},
+    });
+    notifier.dispatch(.page_navigated, &.{ .frame_id = 0, .req_id = 1, .timestamp = 100, .url = undefined, .opts = .{} });
+    try testing.expectEqual(14, tc.page_navigate);
+    try testing.expectEqual(6, tc.page_navigated);
+
+    {
+        // unregister
+        try notifier.register(.page_navigate, &tc, TestClient.pageNavigate);
+        try notifier.register(.page_navigated, &tc, TestClient.pageNavigated);
+        notifier.dispatch(.page_navigate, &.{ .frame_id = 0, .req_id = 1, .timestamp = 100, .url = undefined, .opts = .{} });
+        notifier.dispatch(.page_navigated, &.{ .frame_id = 0, .req_id = 1, .timestamp = 1000, .url = undefined, .opts = .{} });
+        try testing.expectEqual(114, tc.page_navigate);
+        try testing.expectEqual(1006, tc.page_navigated);
+
+        notifier.unregister(.page_navigate, &tc);
+        notifier.dispatch(.page_navigate, &.{ .frame_id = 0, .req_id = 1, .timestamp = 100, .url = undefined, .opts = .{} });
+        notifier.dispatch(.page_navigated, &.{ .frame_id = 0, .req_id = 1, .timestamp = 1000, .url = undefined, .opts = .{} });
+        try testing.expectEqual(114, tc.page_navigate);
+        try testing.expectEqual(2006, tc.page_navigated);
+
+        notifier.unregister(.page_navigated, &tc);
+        notifier.dispatch(.page_navigate, &.{ .frame_id = 0, .req_id = 1, .timestamp = 100, .url = undefined, .opts = .{} });
+        notifier.dispatch(.page_navigated, &.{ .frame_id = 0, .req_id = 1, .timestamp = 1000, .url = undefined, .opts = .{} });
+        try testing.expectEqual(114, tc.page_navigate);
+        try testing.expectEqual(2006, tc.page_navigated);
+
+        // already unregistered, try anyways
+        notifier.unregister(.page_navigated, &tc);
+        notifier.dispatch(.page_navigate, &.{ .frame_id = 0, .req_id = 1, .timestamp = 100, .url = undefined, .opts = .{} });
+        notifier.dispatch(.page_navigated, &.{ .frame_id = 0, .req_id = 1, .timestamp = 1000, .url = undefined, .opts = .{} });
+        try testing.expectEqual(114, tc.page_navigate);
+        try testing.expectEqual(2006, tc.page_navigated);
+    }
+}
+
+const TestClient = struct {
+    page_navigate: u64 = 0,
+    page_navigated: u64 = 0,
+
+    fn pageNavigate(ptr: *anyopaque, data: *const Notification.PageNavigate) !void {
+        const self: *TestClient = @ptrCast(@alignCast(ptr));
+        self.page_navigate += data.timestamp;
+    }
+
+    fn pageNavigated(ptr: *anyopaque, data: *const Notification.PageNavigated) !void {
+        const self: *TestClient = @ptrCast(@alignCast(ptr));
+        self.page_navigated += data.timestamp;
+    }
+};

src/Server.zig

@@ -0,0 +1,981 @@
+// Copyright (C) 2023-2025 Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const lp = @import("lightpanda");
+const builtin = @import("builtin");
+
+const net = std.net;
+const posix = std.posix;
+
+const Allocator = std.mem.Allocator;
+const ArenaAllocator = std.heap.ArenaAllocator;
+
+const log = @import("log.zig");
+const App = @import("App.zig");
+const Config = @import("Config.zig");
+const CDP = @import("cdp/cdp.zig").CDP;
+const Net = @import("Net.zig");
+const Http = @import("http/Http.zig");
+const HttpClient = @import("http/Client.zig");
+
+const Server = @This();
+
+app: *App,
+shutdown: std.atomic.Value(bool) = .init(false),
+allocator: Allocator,
+listener: ?posix.socket_t,
+json_version_response: []const u8,
+
+// Thread management
+active_threads: std.atomic.Value(u32) = .init(0),
+clients: std.ArrayList(*Client) = .{},
+client_mutex: std.Thread.Mutex = .{},
+clients_pool: std.heap.MemoryPool(Client),
+
+pub fn init(app: *App, address: net.Address) !Server {
+    const allocator = app.allocator;
+    const json_version_response = try buildJSONVersionResponse(allocator, address);
+    errdefer allocator.free(json_version_response);
+
+    return .{
+        .app = app,
+        .listener = null,
+        .allocator = allocator,
+        .json_version_response = json_version_response,
+        .clients_pool = std.heap.MemoryPool(Client).init(app.allocator),
+    };
+}
+
+/// Interrupts the server so that main can complete normally and call all defer handlers.
+pub fn stop(self: *Server) void {
+    if (self.shutdown.swap(true, .release)) {
+        return;
+    }
+
+    // Shutdown all active clients
+    {
+        self.client_mutex.lock();
+        defer self.client_mutex.unlock();
+        for (self.clients.items) |client| {
+            client.stop();
+        }
+    }
+
+    // Linux and BSD/macOS handle canceling a socket blocked on accept differently.
+    // For Linux, we use std.shutdown, which will cause accept to return error.SocketNotListening (EINVAL).
+    // For BSD, shutdown will return an error. Instead we call posix.close, which will result with error.ConnectionAborted (BADF).
+    if (self.listener) |listener| switch (builtin.target.os.tag) {
+        .linux => posix.shutdown(listener, .recv) catch |err| {
+            log.warn(.app, "listener shutdown", .{ .err = err });
+        },
+        .macos, .freebsd, .netbsd, .openbsd => {
+            self.listener = null;
+            posix.close(listener);
+        },
+        else => unreachable,
+    };
+}
+
+pub fn deinit(self: *Server) void {
+    if (!self.shutdown.load(.acquire)) {
+        self.stop();
+    }
+
+    self.joinThreads();
+    if (self.listener) |listener| {
+        posix.close(listener);
+        self.listener = null;
+    }
+    self.clients.deinit(self.allocator);
+    self.clients_pool.deinit();
+    self.allocator.free(self.json_version_response);
+}
+
+pub fn run(self: *Server, address: net.Address, timeout_ms: u32) !void {
+    const flags = posix.SOCK.STREAM | posix.SOCK.CLOEXEC | posix.SOCK.NONBLOCK;
+    const listener = try posix.socket(address.any.family, flags, posix.IPPROTO.TCP);
+    self.listener = listener;
+
+    try posix.setsockopt(listener, posix.SOL.SOCKET, posix.SO.REUSEADDR, &std.mem.toBytes(@as(c_int, 1)));
+    if (@hasDecl(posix.TCP, "NODELAY")) {
+        try posix.setsockopt(listener, posix.IPPROTO.TCP, posix.TCP.NODELAY, &std.mem.toBytes(@as(c_int, 1)));
+    }
+
+    try posix.bind(listener, &address.any, address.getOsSockLen());
+    try posix.listen(listener, self.app.config.maxPendingConnections());
+
+    log.info(.app, "server running", .{ .address = address });
+    while (!self.shutdown.load(.acquire)) {
+        const socket = posix.accept(listener, null, null, posix.SOCK.NONBLOCK) catch |err| {
+            switch (err) {
+                error.SocketNotListening, error.ConnectionAborted => {
+                    log.info(.app, "server stopped", .{});
+                    break;
+                },
+                error.WouldBlock => {
+                    std.Thread.sleep(10 * std.time.ns_per_ms);
+                    continue;
+                },
+                else => {
+                    log.err(.app, "CDP accept", .{ .err = err });
+                    std.Thread.sleep(std.time.ns_per_s);
+                    continue;
+                },
+            }
+        };
+
+        self.spawnWorker(socket, timeout_ms) catch |err| {
+            log.err(.app, "CDP spawn", .{ .err = err });
+            posix.close(socket);
+        };
+    }
+}
+
+fn handleConnection(self: *Server, socket: posix.socket_t, timeout_ms: u32) void {
+    defer posix.close(socket);
+
+    // Client is HUGE (> 512KB) because it has a large read buffer.
+    // V8 crashes if this is on the stack (likely related to its size).
+    const client = self.getClient() catch |err| {
+        log.err(.app, "CDP client create", .{ .err = err });
+        return;
+    };
+    defer self.releaseClient(client);
+
+    client.* = Client.init(
+        socket,
+        self.allocator,
+        self.app,
+        self.json_version_response,
+        timeout_ms,
+    ) catch |err| {
+        log.err(.app, "CDP client init", .{ .err = err });
+        return;
+    };
+    defer client.deinit();
+
+    self.registerClient(client);
+    defer self.unregisterClient(client);
+
+    // Check shutdown after registering to avoid missing stop() signal.
+    // If stop() already iterated over clients, this client won't receive stop()
+    // and would block joinThreads() indefinitely.
+    if (self.shutdown.load(.acquire)) {
+        return;
+    }
+
+    client.start();
+}
+
+fn getClient(self: *Server) !*Client {
+    self.client_mutex.lock();
+    defer self.client_mutex.unlock();
+    return self.clients_pool.create();
+}
+
+fn releaseClient(self: *Server, client: *Client) void {
+    self.client_mutex.lock();
+    defer self.client_mutex.unlock();
+    self.clients_pool.destroy(client);
+}
+
+fn registerClient(self: *Server, client: *Client) void {
+    self.client_mutex.lock();
+    defer self.client_mutex.unlock();
+    self.clients.append(self.allocator, client) catch {};
+}
+
+fn unregisterClient(self: *Server, client: *Client) void {
+    self.client_mutex.lock();
+    defer self.client_mutex.unlock();
+    for (self.clients.items, 0..) |c, i| {
+        if (c == client) {
+            _ = self.clients.swapRemove(i);
+            break;
+        }
+    }
+}
+
+fn spawnWorker(self: *Server, socket: posix.socket_t, timeout_ms: u32) !void {
+    if (self.shutdown.load(.acquire)) {
+        return error.ShuttingDown;
+    }
+
+    // Atomically increment active_threads only if below max_connections.
+    // Uses CAS loop to avoid race between checking the limit and incrementing.
+    //
+    // cmpxchgWeak may fail for two reasons:
+    // 1. Another thread changed the value (increment or decrement)
+    // 2. Spurious failure on some architectures (e.g. ARM)
+    //
+    // We use Weak instead of Strong because we need a retry loop anyway:
+    // if CAS fails because a thread finished (counter decreased), we should
+    // retry rather than return an error - there may now be room for a new connection.
+    //
+    // On failure, cmpxchgWeak returns the actual value, which we reuse to avoid
+    // an extra load on the next iteration.
+    const max_connections = self.app.config.maxConnections();
+    var current = self.active_threads.load(.monotonic);
+    while (current < max_connections) {
+        current = self.active_threads.cmpxchgWeak(current, current + 1, .monotonic, .monotonic) orelse break;
+    } else {
+        return error.MaxThreadsReached;
+    }
+    errdefer _ = self.active_threads.fetchSub(1, .monotonic);
+
+    const thread = try std.Thread.spawn(.{}, runWorker, .{ self, socket, timeout_ms });
+    thread.detach();
+}
+
+fn runWorker(self: *Server, socket: posix.socket_t, timeout_ms: u32) void {
+    defer _ = self.active_threads.fetchSub(1, .monotonic);
+    handleConnection(self, socket, timeout_ms);
+}
+
+fn joinThreads(self: *Server) void {
+    while (self.active_threads.load(.monotonic) > 0) {
+        std.Thread.sleep(10 * std.time.ns_per_ms);
+    }
+}
+
+// Handle exactly one TCP connection.
+pub const Client = struct {
+    // The client is initially serving HTTP requests but, under normal circumstances
+    // should eventually be upgraded to a websocket connections
+    mode: union(enum) {
+        http: void,
+        cdp: CDP,
+    },
+
+    allocator: Allocator,
+    app: *App,
+    http: *HttpClient,
+    ws: Net.WsConnection,
+
+    fn init(
+        socket: posix.socket_t,
+        allocator: Allocator,
+        app: *App,
+        json_version_response: []const u8,
+        timeout_ms: u32,
+    ) !Client {
+        var ws = try Net.WsConnection.init(socket, allocator, json_version_response, timeout_ms);
+        errdefer ws.deinit();
+
+        if (log.enabled(.app, .info)) {
+            const client_address = ws.getAddress() catch null;
+            log.info(.app, "client connected", .{ .ip = client_address });
+        }
+
+        const http = try app.http.createClient(allocator);
+        errdefer http.deinit();
+
+        return .{
+            .allocator = allocator,
+            .app = app,
+            .http = http,
+            .ws = ws,
+            .mode = .{ .http = {} },
+        };
+    }
+
+    fn stop(self: *Client) void {
+        self.ws.shutdown();
+    }
+
+    fn deinit(self: *Client) void {
+        switch (self.mode) {
+            .cdp => |*cdp| cdp.deinit(),
+            .http => {},
+        }
+        self.ws.deinit();
+        self.http.deinit();
+    }
+
+    fn start(self: *Client) void {
+        const http = self.http;
+        http.cdp_client = .{
+            .socket = self.ws.socket,
+            .ctx = self,
+            .blocking_read_start = Client.blockingReadStart,
+            .blocking_read = Client.blockingRead,
+            .blocking_read_end = Client.blockingReadStop,
+        };
+        defer http.cdp_client = null;
+
+        self.httpLoop(http) catch |err| {
+            log.err(.app, "CDP client loop", .{ .err = err });
+        };
+    }
+
+    fn httpLoop(self: *Client, http: *HttpClient) !void {
+        lp.assert(self.mode == .http, "Client.httpLoop invalid mode", .{});
+
+        while (true) {
+            const status = http.tick(self.ws.timeout_ms) catch |err| {
+                log.err(.app, "http tick", .{ .err = err });
+                return;
+            };
+            if (status != .cdp_socket) {
+                log.info(.app, "CDP timeout", .{});
+                return;
+            }
+
+            if (self.readSocket() == false) {
+                return;
+            }
+
+            if (self.mode == .cdp) {
+                break;
+            }
+        }
+
+        var cdp = &self.mode.cdp;
+        var last_message = timestamp(.monotonic);
+        var ms_remaining = self.ws.timeout_ms;
+
+        while (true) {
+            switch (cdp.pageWait(ms_remaining)) {
+                .cdp_socket => {
+                    if (self.readSocket() == false) {
+                        return;
+                    }
+                    last_message = timestamp(.monotonic);
+                    ms_remaining = self.ws.timeout_ms;
+                },
+                .no_page => {
+                    const status = http.tick(ms_remaining) catch |err| {
+                        log.err(.app, "http tick", .{ .err = err });
+                        return;
+                    };
+                    if (status != .cdp_socket) {
+                        log.info(.app, "CDP timeout", .{});
+                        return;
+                    }
+                    if (self.readSocket() == false) {
+                        return;
+                    }
+                    last_message = timestamp(.monotonic);
+                    ms_remaining = self.ws.timeout_ms;
+                },
+                .done => {
+                    const elapsed = timestamp(.monotonic) - last_message;
+                    if (elapsed > ms_remaining) {
+                        log.info(.app, "CDP timeout", .{});
+                        return;
+                    }
+                    ms_remaining -= @intCast(elapsed);
+                },
+            }
+        }
+    }
+
+    fn blockingReadStart(ctx: *anyopaque) bool {
+        const self: *Client = @ptrCast(@alignCast(ctx));
+        self.ws.setBlocking(true) catch |err| {
+            log.warn(.app, "CDP blockingReadStart", .{ .err = err });
+            return false;
+        };
+        return true;
+    }
+
+    fn blockingRead(ctx: *anyopaque) bool {
+        const self: *Client = @ptrCast(@alignCast(ctx));
+        return self.readSocket();
+    }
+
+    fn blockingReadStop(ctx: *anyopaque) bool {
+        const self: *Client = @ptrCast(@alignCast(ctx));
+        self.ws.setBlocking(false) catch |err| {
+            log.warn(.app, "CDP blockingReadStop", .{ .err = err });
+            return false;
+        };
+        return true;
+    }
+
+    fn readSocket(self: *Client) bool {
+        const n = self.ws.read() catch |err| {
+            log.warn(.app, "CDP read", .{ .err = err });
+            return false;
+        };
+
+        if (n == 0) {
+            log.info(.app, "CDP disconnect", .{});
+            return false;
+        }
+
+        return self.processData() catch false;
+    }
+
+    fn processData(self: *Client) !bool {
+        switch (self.mode) {
+            .cdp => |*cdp| return self.processWebsocketMessage(cdp),
+            .http => return self.processHTTPRequest(),
+        }
+    }
+
+    fn processHTTPRequest(self: *Client) !bool {
+        lp.assert(self.ws.reader.pos == 0, "Client.HTTP pos", .{ .pos = self.ws.reader.pos });
+        const request = self.ws.reader.buf[0..self.ws.reader.len];
+
+        if (request.len > Config.CDP_MAX_HTTP_REQUEST_SIZE) {
+            self.writeHTTPErrorResponse(413, "Request too large");
+            return error.RequestTooLarge;
+        }
+
+        // we're only expecting [body-less] GET requests.
+        if (std.mem.endsWith(u8, request, "\r\n\r\n") == false) {
+            // we need more data, put any more data here
+            return true;
+        }
+
+        // the next incoming data can go to the front of our buffer
+        defer self.ws.reader.len = 0;
+        return self.handleHTTPRequest(request) catch |err| {
+            switch (err) {
+                error.NotFound => self.writeHTTPErrorResponse(404, "Not found"),
+                error.InvalidRequest => self.writeHTTPErrorResponse(400, "Invalid request"),
+                error.InvalidProtocol => self.writeHTTPErrorResponse(400, "Invalid HTTP protocol"),
+                error.MissingHeaders => self.writeHTTPErrorResponse(400, "Missing required header"),
+                error.InvalidUpgradeHeader => self.writeHTTPErrorResponse(400, "Unsupported upgrade type"),
+                error.InvalidVersionHeader => self.writeHTTPErrorResponse(400, "Invalid websocket version"),
+                error.InvalidConnectionHeader => self.writeHTTPErrorResponse(400, "Invalid connection header"),
+                else => {
+                    log.err(.app, "server 500", .{ .err = err, .req = request[0..@min(100, request.len)] });
+                    self.writeHTTPErrorResponse(500, "Internal Server Error");
+                },
+            }
+            return err;
+        };
+    }
+
+    fn handleHTTPRequest(self: *Client, request: []u8) !bool {
+        if (request.len < 18) {
+            // 18 is [generously] the smallest acceptable HTTP request
+            return error.InvalidRequest;
+        }
+
+        if (std.mem.eql(u8, request[0..4], "GET ") == false) {
+            return error.NotFound;
+        }
+
+        const url_end = std.mem.indexOfScalarPos(u8, request, 4, ' ') orelse {
+            return error.InvalidRequest;
+        };
+
+        const url = request[4..url_end];
+
+        if (std.mem.eql(u8, url, "/")) {
+            try self.upgradeConnection(request);
+            return true;
+        }
+
+        if (std.mem.eql(u8, url, "/json/version") or std.mem.eql(u8, url, "/json/version/")) {
+            try self.ws.send(self.ws.json_version_response);
+            // Chromedp (a Go driver) does an http request to /json/version
+            // then to / (websocket upgrade) using a different connection.
+            // Since we only allow 1 connection at a time, the 2nd one (the
+            // websocket upgrade) blocks until the first one times out.
+            // We can avoid that by closing the connection. json_version_response
+            // has a Connection: Close header too.
+            self.ws.shutdown();
+            return false;
+        }
+
+        return error.NotFound;
+    }
+
+    fn upgradeConnection(self: *Client, request: []u8) !void {
+        try self.ws.upgrade(request);
+        self.mode = .{ .cdp = try CDP.init(self.app, self.http, self) };
+    }
+
+    fn writeHTTPErrorResponse(self: *Client, comptime status: u16, comptime body: []const u8) void {
+        self.ws.sendHttpError(status, body);
+    }
+
+    fn processWebsocketMessage(self: *Client, cdp: *CDP) !bool {
+        return self.ws.processMessages(cdp);
+    }
+
+    pub fn sendAllocator(self: *Client) Allocator {
+        return self.ws.send_arena.allocator();
+    }
+
+    pub fn sendJSON(self: *Client, message: anytype, opts: std.json.Stringify.Options) !void {
+        return self.ws.sendJSON(message, opts);
+    }
+
+    pub fn sendJSONRaw(self: *Client, buf: std.ArrayList(u8)) !void {
+        return self.ws.sendJSONRaw(buf);
+    }
+};
+
+// Utils
+// --------
+
+fn buildJSONVersionResponse(
+    allocator: Allocator,
+    address: net.Address,
+) ![]const u8 {
+    const body_format = "{{\"webSocketDebuggerUrl\": \"ws://{f}/\"}}";
+    const body_len = std.fmt.count(body_format, .{address});
+
+    // We send a Connection: Close (and actually close the connection)
+    // because chromedp (Go driver) sends a request to /json/version and then
+    // does an upgrade request, on a different connection. Since we only allow
+    // 1 connection at a time, the upgrade connection doesn't proceed until we
+    // timeout the /json/version. So, instead of waiting for that, we just
+    // always close HTTP requests.
+    const response_format =
+        "HTTP/1.1 200 OK\r\n" ++
+        "Content-Length: {d}\r\n" ++
+        "Connection: Close\r\n" ++
+        "Content-Type: application/json; charset=UTF-8\r\n\r\n" ++
+        body_format;
+    return try std.fmt.allocPrint(allocator, response_format, .{ body_len, address });
+}
+
+pub const timestamp = @import("datetime.zig").timestamp;
+
+const testing = std.testing;
+test "server: buildJSONVersionResponse" {
+    const address = try net.Address.parseIp4("127.0.0.1", 9001);
+    const res = try buildJSONVersionResponse(testing.allocator, address);
+    defer testing.allocator.free(res);
+
+    try testing.expectEqualStrings("HTTP/1.1 200 OK\r\n" ++
+        "Content-Length: 48\r\n" ++
+        "Connection: Close\r\n" ++
+        "Content-Type: application/json; charset=UTF-8\r\n\r\n" ++
+        "{\"webSocketDebuggerUrl\": \"ws://127.0.0.1:9001/\"}", res);
+}
+
+test "Client: http invalid request" {
+    var c = try createTestClient();
+    defer c.deinit();
+
+    const res = try c.httpRequest("GET /over/9000 HTTP/1.1\r\n" ++ "Header: " ++ ("a" ** 4100) ++ "\r\n\r\n");
+    try testing.expectEqualStrings("HTTP/1.1 413 \r\n" ++
+        "Connection: Close\r\n" ++
+        "Content-Length: 17\r\n\r\n" ++
+        "Request too large", res);
+}
+
+test "Client: http invalid handshake" {
+    try assertHTTPError(
+        400,
+        "Invalid request",
+        "\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        404,
+        "Not found",
+        "GET /over/9000 HTTP/1.1\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        404,
+        "Not found",
+        "POST / HTTP/1.1\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        400,
+        "Invalid HTTP protocol",
+        "GET / HTTP/1.0\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        400,
+        "Missing required header",
+        "GET / HTTP/1.1\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        400,
+        "Missing required header",
+        "GET / HTTP/1.1\r\nConnection:  upgrade\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        400,
+        "Missing required header",
+        "GET / HTTP/1.1\r\nConnection: upgrade\r\nUpgrade: websocket\r\n\r\n",
+    );
+
+    try assertHTTPError(
+        400,
+        "Missing required header",
+        "GET / HTTP/1.1\r\nConnection: upgrade\r\nUpgrade: websocket\r\nsec-websocket-version:13\r\n\r\n",
+    );
+}
+
+test "Client: http valid handshake" {
+    var c = try createTestClient();
+    defer c.deinit();
+
+    const request =
+        "GET /   HTTP/1.1\r\n" ++
+        "Connection: upgrade\r\n" ++
+        "Upgrade: websocket\r\n" ++
+        "sec-websocket-version:13\r\n" ++
+        "sec-websocket-key: this is my key\r\n" ++
+        "Custom:  Header-Value\r\n\r\n";
+
+    const res = try c.httpRequest(request);
+    try testing.expectEqualStrings("HTTP/1.1 101 Switching Protocols\r\n" ++
+        "Upgrade: websocket\r\n" ++
+        "Connection: upgrade\r\n" ++
+        "Sec-Websocket-Accept: flzHu2DevQ2dSCSVqKSii5e9C2o=\r\n\r\n", res);
+}
+
+test "Client: read invalid websocket message" {
+    // 131 = 128 (fin) | 3  where 3 isn't a valid type
+    try assertWebSocketError(
+        1002,
+        &.{ 131, 128, 'm', 'a', 's', 'k' },
+    );
+
+    for ([_]u8{ 16, 32, 64 }) |rsv| {
+        // none of the reserve flags should be set
+        try assertWebSocketError(
+            1002,
+            &.{ rsv, 128, 'm', 'a', 's', 'k' },
+        );
+
+        // as a bitmask
+        try assertWebSocketError(
+            1002,
+            &.{ rsv + 4, 128, 'm', 'a', 's', 'k' },
+        );
+    }
+
+    // client->server messages must be masked
+    try assertWebSocketError(
+        1002,
+        &.{ 129, 1, 'a' },
+    );
+
+    // control types (ping/ping/close) can't be > 125 bytes
+    for ([_]u8{ 136, 137, 138 }) |op| {
+        try assertWebSocketError(
+            1002,
+            &.{ op, 254, 1, 1 },
+        );
+    }
+
+    // length of message is 0000 0810, i.e: 1024 * 512 + 265
+    try assertWebSocketError(1009, &.{ 129, 255, 0, 0, 0, 0, 0, 8, 1, 0, 'm', 'a', 's', 'k' });
+
+    // continuation type message must come after a normal message
+    // even when not a fin frame
+    try assertWebSocketError(
+        1002,
+        &.{ 0, 129, 'm', 'a', 's', 'k', 'd' },
+    );
+
+    // continuation type message must come after a normal message
+    // even as a fin frame
+    try assertWebSocketError(
+        1002,
+        &.{ 128, 129, 'm', 'a', 's', 'k', 'd' },
+    );
+
+    // text (non-fin) - text (non-fin)
+    try assertWebSocketError(
+        1002,
+        &.{ 1, 129, 'm', 'a', 's', 'k', 'd', 1, 128, 'k', 's', 'a', 'm' },
+    );
+
+    // text (non-fin) - text (fin) should always been continuation after non-fin
+    try assertWebSocketError(
+        1002,
+        &.{ 1, 129, 'm', 'a', 's', 'k', 'd', 129, 128, 'k', 's', 'a', 'm' },
+    );
+
+    // close must be fin
+    try assertWebSocketError(
+        1002,
+        &.{
+            8, 129, 'm', 'a', 's', 'k', 'd',
+        },
+    );
+
+    // ping must be fin
+    try assertWebSocketError(
+        1002,
+        &.{
+            9, 129, 'm', 'a', 's', 'k', 'd',
+        },
+    );
+
+    // pong must be fin
+    try assertWebSocketError(
+        1002,
+        &.{
+            10, 129, 'm', 'a', 's', 'k', 'd',
+        },
+    );
+}
+
+test "Client: ping reply" {
+    try assertWebSocketMessage(
+        // fin | pong, len
+        &.{ 138, 0 },
+
+        // fin | ping, masked | len, 4-byte mask
+        &.{ 137, 128, 0, 0, 0, 0 },
+    );
+
+    try assertWebSocketMessage(
+        // fin | pong, len, payload
+        &.{ 138, 5, 100, 96, 97, 109, 104 },
+
+        // fin | ping, masked | len, 4-byte mask, 5 byte payload
+        &.{ 137, 133, 0, 5, 7, 10, 100, 101, 102, 103, 104 },
+    );
+}
+
+test "Client: close message" {
+    try assertWebSocketMessage(
+        // fin | close, len, close code (normal)
+        &.{ 136, 2, 3, 232 },
+
+        // fin | close, masked | len, 4-byte mask
+        &.{ 136, 128, 0, 0, 0, 0 },
+    );
+}
+
+test "server: 404" {
+    var c = try createTestClient();
+    defer c.deinit();
+
+    const res = try c.httpRequest("GET /unknown HTTP/1.1\r\n\r\n");
+    try testing.expectEqualStrings("HTTP/1.1 404 \r\n" ++
+        "Connection: Close\r\n" ++
+        "Content-Length: 9\r\n\r\n" ++
+        "Not found", res);
+}
+
+test "server: get /json/version" {
+    const expected_response =
+        "HTTP/1.1 200 OK\r\n" ++
+        "Content-Length: 48\r\n" ++
+        "Connection: Close\r\n" ++
+        "Content-Type: application/json; charset=UTF-8\r\n\r\n" ++
+        "{\"webSocketDebuggerUrl\": \"ws://127.0.0.1:9583/\"}";
+
+    {
+        // twice on the same connection
+        var c = try createTestClient();
+        defer c.deinit();
+
+        const res1 = try c.httpRequest("GET /json/version HTTP/1.1\r\n\r\n");
+        try testing.expectEqualStrings(expected_response, res1);
+    }
+
+    {
+        // again on a new connection
+        var c = try createTestClient();
+        defer c.deinit();
+
+        const res1 = try c.httpRequest("GET /json/version HTTP/1.1\r\n\r\n");
+        try testing.expectEqualStrings(expected_response, res1);
+    }
+}
+
+fn assertHTTPError(
+    comptime expected_status: u16,
+    comptime expected_body: []const u8,
+    input: []const u8,
+) !void {
+    var c = try createTestClient();
+    defer c.deinit();
+
+    const res = try c.httpRequest(input);
+    const expected_response = std.fmt.comptimePrint(
+        "HTTP/1.1 {d} \r\nConnection: Close\r\nContent-Length: {d}\r\n\r\n{s}",
+        .{ expected_status, expected_body.len, expected_body },
+    );
+
+    try testing.expectEqualStrings(expected_response, res);
+}
+
+fn assertWebSocketError(close_code: u16, input: []const u8) !void {
+    var c = try createTestClient();
+    defer c.deinit();
+
+    try c.handshake();
+    try c.stream.writeAll(input);
+
+    const msg = try c.readWebsocketMessage() orelse return error.NoMessage;
+    defer if (msg.cleanup_fragment) {
+        c.reader.cleanup();
+    };
+
+    try testing.expectEqual(.close, msg.type);
+    try testing.expectEqual(2, msg.data.len);
+    try testing.expectEqual(close_code, std.mem.readInt(u16, msg.data[0..2], .big));
+}
+
+fn assertWebSocketMessage(expected: []const u8, input: []const u8) !void {
+    var c = try createTestClient();
+    defer c.deinit();
+
+    try c.handshake();
+    try c.stream.writeAll(input);
+
+    const msg = try c.readWebsocketMessage() orelse return error.NoMessage;
+    defer if (msg.cleanup_fragment) {
+        c.reader.cleanup();
+    };
+
+    const actual = c.reader.buf[0 .. msg.data.len + 2];
+    try testing.expectEqualSlices(u8, expected, actual);
+}
+
+const MockCDP = struct {
+    messages: std.ArrayList([]const u8) = .{},
+
+    allocator: Allocator = testing.allocator,
+
+    fn init(_: Allocator, client: anytype) MockCDP {
+        _ = client;
+        return .{};
+    }
+
+    fn deinit(self: *MockCDP) void {
+        const allocator = self.allocator;
+        for (self.messages.items) |msg| {
+            allocator.free(msg);
+        }
+        self.messages.deinit(allocator);
+    }
+
+    fn handleMessage(self: *MockCDP, message: []const u8) bool {
+        const owned = self.allocator.dupe(u8, message) catch unreachable;
+        self.messages.append(self.allocator, owned) catch unreachable;
+        return true;
+    }
+};
+
+fn createTestClient() !TestClient {
+    const address = std.net.Address.initIp4([_]u8{ 127, 0, 0, 1 }, 9583);
+    const stream = try std.net.tcpConnectToAddress(address);
+
+    const timeout = std.mem.toBytes(posix.timeval{
+        .sec = 2,
+        .usec = 0,
+    });
+    try posix.setsockopt(stream.handle, posix.SOL.SOCKET, posix.SO.RCVTIMEO, &timeout);
+    try posix.setsockopt(stream.handle, posix.SOL.SOCKET, posix.SO.SNDTIMEO, &timeout);
+    return .{
+        .stream = stream,
+        .reader = .{
+            .allocator = testing.allocator,
+            .buf = try testing.allocator.alloc(u8, 1024 * 16),
+        },
+    };
+}
+
+const TestClient = struct {
+    stream: std.net.Stream,
+    buf: [1024]u8 = undefined,
+    reader: Net.Reader(false),
+
+    fn deinit(self: *TestClient) void {
+        self.stream.close();
+        self.reader.deinit();
+    }
+
+    fn httpRequest(self: *TestClient, req: []const u8) ![]const u8 {
+        try self.stream.writeAll(req);
+
+        var pos: usize = 0;
+        var total_length: ?usize = null;
+        while (true) {
+            pos += try self.stream.read(self.buf[pos..]);
+            if (pos == 0) {
+                return error.NoMoreData;
+            }
+            const response = self.buf[0..pos];
+            if (total_length == null) {
+                const header_end = std.mem.indexOf(u8, response, "\r\n\r\n") orelse continue;
+                const header = response[0 .. header_end + 4];
+
+                const cl = blk: {
+                    const cl_header = "Content-Length: ";
+                    const start = (std.mem.indexOf(u8, header, cl_header) orelse {
+                        break :blk 0;
+                    }) + cl_header.len;
+
+                    const end = std.mem.indexOfScalarPos(u8, header, start, '\r') orelse {
+                        return error.InvalidContentLength;
+                    };
+
+                    break :blk std.fmt.parseInt(usize, header[start..end], 10) catch {
+                        return error.InvalidContentLength;
+                    };
+                };
+
+                total_length = cl + header.len;
+            }
+
+            if (total_length) |tl| {
+                if (pos == tl) {
+                    return response;
+                }
+                if (pos > tl) {
+                    return error.DataExceedsContentLength;
+                }
+            }
+        }
+    }
+
+    fn handshake(self: *TestClient) !void {
+        const request =
+            "GET /   HTTP/1.1\r\n" ++
+            "Connection: upgrade\r\n" ++
+            "Upgrade: websocket\r\n" ++
+            "sec-websocket-version:13\r\n" ++
+            "sec-websocket-key: this is my key\r\n" ++
+            "Custom:  Header-Value\r\n\r\n";
+
+        const res = try self.httpRequest(request);
+        try testing.expectEqualStrings("HTTP/1.1 101 Switching Protocols\r\n" ++
+            "Upgrade: websocket\r\n" ++
+            "Connection: upgrade\r\n" ++
+            "Sec-Websocket-Accept: flzHu2DevQ2dSCSVqKSii5e9C2o=\r\n\r\n", res);
+    }
+
+    fn readWebsocketMessage(self: *TestClient) !?Net.Message {
+        while (true) {
+            const n = try self.stream.read(self.reader.readBuf());
+            if (n == 0) {
+                return error.Closed;
+            }
+            self.reader.len += n;
+            if (try self.reader.next()) |msg| {
+                return msg;
+            }
+        }
+    }
+};

src/Sighandler.zig

@@ -0,0 +1,107 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//! This structure processes operating system signals (SIGINT, SIGTERM)
+//! and runs callbacks to clean up the system gracefully.
+//!
+//! The structure does not clear the memory allocated in the arena,
+//! clear the entire arena when exiting the program.
+const std = @import("std");
+const assert = std.debug.assert;
+const Allocator = std.mem.Allocator;
+const lp = @import("lightpanda");
+
+const log = lp.log;
+
+const SigHandler = @This();
+
+arena: Allocator,
+
+sigset: std.posix.sigset_t = undefined,
+handle_thread: ?std.Thread = null,
+
+attempt: u32 = 0,
+listeners: std.ArrayList(Listener) = .empty,
+
+pub const Listener = struct {
+    args: []const u8,
+    start: *const fn (context: *const anyopaque) void,
+};
+
+pub fn install(self: *SigHandler) !void {
+    // Block SIGINT and SIGTERM for the current thread and all created from it
+    self.sigset = std.posix.sigemptyset();
+    std.posix.sigaddset(&self.sigset, std.posix.SIG.INT);
+    std.posix.sigaddset(&self.sigset, std.posix.SIG.TERM);
+    std.posix.sigaddset(&self.sigset, std.posix.SIG.QUIT);
+    std.posix.sigprocmask(std.posix.SIG.BLOCK, &self.sigset, null);
+
+    self.handle_thread = try std.Thread.spawn(.{ .allocator = self.arena }, SigHandler.sighandle, .{self});
+    self.handle_thread.?.detach();
+}
+
+pub fn on(self: *SigHandler, func: anytype, args: std.meta.ArgsTuple(@TypeOf(func))) !void {
+    assert(@typeInfo(@TypeOf(func)).@"fn".return_type.? == void);
+
+    const Args = @TypeOf(args);
+    const TypeErased = struct {
+        fn start(context: *const anyopaque) void {
+            const args_casted: *const Args = @ptrCast(@alignCast(context));
+            @call(.auto, func, args_casted.*);
+        }
+    };
+
+    const buffer = try self.arena.alignedAlloc(u8, .of(Args), @sizeOf(Args));
+    errdefer self.arena.free(buffer);
+
+    const bytes: []const u8 = @ptrCast((&args)[0..1]);
+    @memcpy(buffer, bytes);
+
+    try self.listeners.append(self.arena, .{
+        .args = buffer,
+        .start = TypeErased.start,
+    });
+}
+
+fn sighandle(self: *SigHandler) noreturn {
+    while (true) {
+        var sig: c_int = 0;
+
+        const rc = std.c.sigwait(&self.sigset, &sig);
+        if (rc != 0) {
+            log.err(.app, "Unable to process signal {}", .{rc});
+            std.process.exit(1);
+        }
+
+        switch (sig) {
+            std.posix.SIG.INT, std.posix.SIG.TERM => {
+                if (self.attempt > 1) {
+                    std.process.exit(1);
+                }
+                self.attempt += 1;
+
+                log.info(.app, "Received termination signal...", .{});
+                for (self.listeners.items) |*item| {
+                    item.start(item.args.ptr);
+                }
+                continue;
+            },
+            else => continue,
+        }
+    }
+}

src/TestHTTPServer.zig

@@ -0,0 +1,150 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+
+const TestHTTPServer = @This();
+
+shutdown: std.atomic.Value(bool),
+listener: ?std.net.Server,
+handler: Handler,
+
+const Handler = *const fn (req: *std.http.Server.Request) anyerror!void;
+
+pub fn init(handler: Handler) TestHTTPServer {
+    return .{
+        .shutdown = .init(true),
+        .listener = null,
+        .handler = handler,
+    };
+}
+
+pub fn deinit(self: *TestHTTPServer) void {
+    self.listener = null;
+}
+
+pub fn stop(self: *TestHTTPServer) void {
+    self.shutdown.store(true, .release);
+    if (self.listener) |*listener| {
+        switch (@import("builtin").target.os.tag) {
+            .linux => std.posix.shutdown(listener.stream.handle, .recv) catch {},
+            else => std.posix.close(listener.stream.handle),
+        }
+    }
+}
+
+pub fn run(self: *TestHTTPServer, wg: *std.Thread.WaitGroup) !void {
+    const address = try std.net.Address.parseIp("127.0.0.1", 9582);
+
+    self.listener = try address.listen(.{ .reuse_address = true });
+    var listener = &self.listener.?;
+    self.shutdown.store(false, .release);
+
+    wg.finish();
+
+    while (true) {
+        const conn = listener.accept() catch |err| {
+            if (self.shutdown.load(.acquire) or err == error.SocketNotListening) {
+                return;
+            }
+            return err;
+        };
+        const thrd = try std.Thread.spawn(.{}, handleConnection, .{ self, conn });
+        thrd.detach();
+    }
+}
+
+fn handleConnection(self: *TestHTTPServer, conn: std.net.Server.Connection) !void {
+    defer conn.stream.close();
+
+    var req_buf: [2048]u8 = undefined;
+    var conn_reader = conn.stream.reader(&req_buf);
+    var conn_writer = conn.stream.writer(&req_buf);
+
+    var http_server = std.http.Server.init(conn_reader.interface(), &conn_writer.interface);
+
+    while (true) {
+        var req = http_server.receiveHead() catch |err| switch (err) {
+            error.ReadFailed => continue,
+            error.HttpConnectionClosing => continue,
+            else => {
+                std.debug.print("Test HTTP Server error: {}\n", .{err});
+                return err;
+            },
+        };
+
+        self.handler(&req) catch |err| {
+            std.debug.print("test http error '{s}': {}\n", .{ req.head.target, err });
+            try req.respond("server error", .{ .status = .internal_server_error });
+            return;
+        };
+    }
+}
+
+pub fn sendFile(req: *std.http.Server.Request, file_path: []const u8) !void {
+    var file = std.fs.cwd().openFile(file_path, .{}) catch |err| switch (err) {
+        error.FileNotFound => return req.respond("server error", .{ .status = .not_found }),
+        else => return err,
+    };
+    defer file.close();
+
+    const stat = try file.stat();
+    var send_buffer: [4096]u8 = undefined;
+
+    var res = try req.respondStreaming(&send_buffer, .{
+        .content_length = stat.size,
+        .respond_options = .{
+            .extra_headers = &.{
+                .{ .name = "content-type", .value = getContentType(file_path) },
+            },
+        },
+    });
+
+    var read_buffer: [4096]u8 = undefined;
+    var reader = file.reader(&read_buffer);
+    _ = try res.writer.sendFileAll(&reader, .unlimited);
+    try res.writer.flush();
+    try res.end();
+}
+
+fn getContentType(file_path: []const u8) []const u8 {
+    if (std.mem.endsWith(u8, file_path, ".js")) {
+        return "application/json";
+    }
+
+    if (std.mem.endsWith(u8, file_path, ".html")) {
+        return "text/html";
+    }
+
+    if (std.mem.endsWith(u8, file_path, ".htm")) {
+        return "text/html";
+    }
+
+    if (std.mem.endsWith(u8, file_path, ".xml")) {
+        // some wpt tests do this
+        return "text/xml";
+    }
+
+    if (std.mem.endsWith(u8, file_path, ".mjs")) {
+        // mjs are ECMAScript modules
+        return "application/json";
+    }
+
+    std.debug.print("TestHTTPServer asked to serve an unknown file type: {s}\n", .{file_path});
+    return "text/html";
+}

src/app.zig

@@ -1,100 +0,0 @@
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-
-const log = @import("log.zig");
-const Loop = @import("runtime/loop.zig").Loop;
-const HttpClient = @import("http/client.zig").Client;
-const Telemetry = @import("telemetry/telemetry.zig").Telemetry;
-const Notification = @import("notification.zig").Notification;
-
-// Container for global state / objects that various parts of the system
-// might need.
-pub const App = struct {
-    loop: *Loop,
-    config: Config,
-    allocator: Allocator,
-    telemetry: Telemetry,
-    http_client: HttpClient,
-    app_dir_path: ?[]const u8,
-    notification: *Notification,
-
-    pub const RunMode = enum {
-        help,
-        fetch,
-        serve,
-        version,
-    };
-
-    pub const Config = struct {
-        run_mode: RunMode,
-        tls_verify_host: bool = true,
-        http_proxy: ?std.Uri = null,
-    };
-
-    pub fn init(allocator: Allocator, config: Config) !*App {
-        const app = try allocator.create(App);
-        errdefer allocator.destroy(app);
-
-        const loop = try allocator.create(Loop);
-        errdefer allocator.destroy(loop);
-
-        loop.* = try Loop.init(allocator);
-        errdefer loop.deinit();
-
-        const notification = try Notification.init(allocator, null);
-        errdefer notification.deinit();
-
-        const app_dir_path = getAndMakeAppDir(allocator);
-
-        app.* = .{
-            .loop = loop,
-            .allocator = allocator,
-            .telemetry = undefined,
-            .app_dir_path = app_dir_path,
-            .notification = notification,
-            .http_client = try HttpClient.init(allocator, .{
-                .max_concurrent = 3,
-                .http_proxy = config.http_proxy,
-                .tls_verify_host = config.tls_verify_host,
-            }),
-            .config = config,
-        };
-        app.telemetry = Telemetry.init(app, config.run_mode);
-        try app.telemetry.register(app.notification);
-
-        return app;
-    }
-
-    pub fn deinit(self: *App) void {
-        const allocator = self.allocator;
-        if (self.app_dir_path) |app_dir_path| {
-            allocator.free(app_dir_path);
-        }
-        self.telemetry.deinit();
-        self.loop.deinit();
-        allocator.destroy(self.loop);
-        self.http_client.deinit();
-        self.notification.deinit();
-        allocator.destroy(self);
-    }
-};
-
-fn getAndMakeAppDir(allocator: Allocator) ?[]const u8 {
-    if (@import("builtin").is_test) {
-        return allocator.dupe(u8, "/tmp") catch unreachable;
-    }
-    const app_dir_path = std.fs.getAppDataDir(allocator, "lightpanda") catch |err| {
-        log.warn(.app, "get data dir", .{ .err = err });
-        return null;
-    };
-
-    std.fs.cwd().makePath(app_dir_path) catch |err| switch (err) {
-        error.PathAlreadyExists => return app_dir_path,
-        else => {
-            allocator.free(app_dir_path);
-            log.warn(.app, "create data dir", .{ .err = err, .path = app_dir_path });
-            return null;
-        },
-    };
-    return app_dir_path;
-}

src/browser/Browser.zig

@@ -0,0 +1,115 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+
+const Allocator = std.mem.Allocator;
+const ArenaAllocator = std.heap.ArenaAllocator;
+
+const js = @import("js/js.zig");
+const log = @import("../log.zig");
+const App = @import("../App.zig");
+const HttpClient = @import("../http/Client.zig");
+
+const ArenaPool = App.ArenaPool;
+
+const IS_DEBUG = @import("builtin").mode == .Debug;
+
+const Session = @import("Session.zig");
+const Notification = @import("../Notification.zig");
+
+// Browser is an instance of the browser.
+// You can create multiple browser instances.
+// A browser contains only one session.
+const Browser = @This();
+
+env: js.Env,
+app: *App,
+session: ?Session,
+allocator: Allocator,
+arena_pool: *ArenaPool,
+http_client: *HttpClient,
+
+const InitOpts = struct {
+    env: js.Env.InitOpts = .{},
+    http_client: *HttpClient,
+};
+
+pub fn init(app: *App, opts: InitOpts) !Browser {
+    const allocator = app.allocator;
+
+    var env = try js.Env.init(app, opts.env);
+    errdefer env.deinit();
+
+    return .{
+        .app = app,
+        .env = env,
+        .session = null,
+        .allocator = allocator,
+        .arena_pool = &app.arena_pool,
+        .http_client = opts.http_client,
+    };
+}
+
+pub fn deinit(self: *Browser) void {
+    self.closeSession();
+    self.env.deinit();
+}
+
+pub fn newSession(self: *Browser, notification: *Notification) !*Session {
+    self.closeSession();
+    self.session = @as(Session, undefined);
+    const session = &self.session.?;
+    try Session.init(session, self, notification);
+    return session;
+}
+
+pub fn closeSession(self: *Browser) void {
+    if (self.session) |*session| {
+        session.deinit();
+        self.session = null;
+        self.env.memoryPressureNotification(.critical);
+    }
+}
+
+pub fn runMicrotasks(self: *Browser) void {
+    self.env.runMicrotasks();
+}
+
+pub fn runMacrotasks(self: *Browser) !?u64 {
+    const env = &self.env;
+
+    const time_to_next = try self.env.runMacrotasks();
+    env.pumpMessageLoop();
+
+    // either of the above could have queued more microtasks
+    env.runMicrotasks();
+
+    return time_to_next;
+}
+
+pub fn hasBackgroundTasks(self: *Browser) bool {
+    return self.env.hasBackgroundTasks();
+}
+pub fn waitForBackgroundTasks(self: *Browser) void {
+    self.env.waitForBackgroundTasks();
+}
+
+pub fn runIdleTasks(self: *const Browser) void {
+    self.env.runIdleTasks();
+}

src/browser/EventManager.zig

@@ -0,0 +1,910 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const builtin = @import("builtin");
+
+const log = @import("../log.zig");
+const String = @import("../string.zig").String;
+
+const js = @import("js/js.zig");
+const Page = @import("Page.zig");
+
+const Node = @import("webapi/Node.zig");
+const Event = @import("webapi/Event.zig");
+const EventTarget = @import("webapi/EventTarget.zig");
+const Element = @import("webapi/Element.zig");
+
+const Allocator = std.mem.Allocator;
+
+const IS_DEBUG = builtin.mode == .Debug;
+
+const EventKey = struct {
+    event_target: usize,
+    type_string: String,
+};
+
+const EventKeyContext = struct {
+    pub fn hash(_: @This(), key: EventKey) u64 {
+        var hasher = std.hash.Wyhash.init(0);
+        hasher.update(std.mem.asBytes(&key.event_target));
+        hasher.update(key.type_string.str());
+        return hasher.final();
+    }
+
+    pub fn eql(_: @This(), a: EventKey, b: EventKey) bool {
+        return a.event_target == b.event_target and a.type_string.eql(b.type_string);
+    }
+};
+
+pub const EventManager = @This();
+
+page: *Page,
+arena: Allocator,
+// Used as an optimization in Page._documentIsComplete. If we know there are no
+// 'load' listeners in the document, we can skip dispatching the per-resource
+// 'load' event (e.g. amazon product page has no listener and ~350 resources)
+has_dom_load_listener: bool,
+listener_pool: std.heap.MemoryPool(Listener),
+ignore_list: std.ArrayList(*Listener),
+list_pool: std.heap.MemoryPool(std.DoublyLinkedList),
+lookup: std.HashMapUnmanaged(
+    EventKey,
+    *std.DoublyLinkedList,
+    EventKeyContext,
+    std.hash_map.default_max_load_percentage,
+),
+dispatch_depth: usize,
+deferred_removals: std.ArrayList(struct { list: *std.DoublyLinkedList, listener: *Listener }),
+
+pub fn init(arena: Allocator, page: *Page) EventManager {
+    return .{
+        .page = page,
+        .lookup = .{},
+        .arena = arena,
+        .ignore_list = .{},
+        .list_pool = .init(arena),
+        .listener_pool = .init(arena),
+        .dispatch_depth = 0,
+        .deferred_removals = .{},
+        .has_dom_load_listener = false,
+    };
+}
+
+pub const RegisterOptions = struct {
+    once: bool = false,
+    capture: bool = false,
+    passive: bool = false,
+    signal: ?*@import("webapi/AbortSignal.zig") = null,
+};
+
+pub const Callback = union(enum) {
+    function: js.Function,
+    object: js.Object,
+};
+
+pub fn register(self: *EventManager, target: *EventTarget, typ: []const u8, callback: Callback, opts: RegisterOptions) !void {
+    if (comptime IS_DEBUG) {
+        log.debug(.event, "eventManager.register", .{ .type = typ, .capture = opts.capture, .once = opts.once, .target = target.toString() });
+    }
+
+    // If a signal is provided and already aborted, don't register the listener
+    if (opts.signal) |signal| {
+        if (signal.getAborted()) {
+            return;
+        }
+    }
+
+    // Allocate the type string we'll use in both listener and key
+    const type_string = try String.init(self.arena, typ, .{});
+
+    if (type_string.eql(comptime .wrap("load")) and target._type == .node) {
+        self.has_dom_load_listener = true;
+    }
+
+    const gop = try self.lookup.getOrPut(self.arena, .{
+        .type_string = type_string,
+        .event_target = @intFromPtr(target),
+    });
+    if (gop.found_existing) {
+        // check for duplicate callbacks already registered
+        var node = gop.value_ptr.*.first;
+        while (node) |n| {
+            const listener: *Listener = @alignCast(@fieldParentPtr("node", n));
+            const is_duplicate = switch (callback) {
+                .object => |obj| listener.function.eqlObject(obj),
+                .function => |func| listener.function.eqlFunction(func),
+            };
+            if (is_duplicate and listener.capture == opts.capture) {
+                return;
+            }
+            node = n.next;
+        }
+    } else {
+        gop.value_ptr.* = try self.list_pool.create();
+        gop.value_ptr.*.* = .{};
+    }
+
+    const func = switch (callback) {
+        .function => |f| Function{ .value = try f.persist() },
+        .object => |o| Function{ .object = try o.persist() },
+    };
+
+    const listener = try self.listener_pool.create();
+    listener.* = .{
+        .node = .{},
+        .once = opts.once,
+        .capture = opts.capture,
+        .passive = opts.passive,
+        .function = func,
+        .signal = opts.signal,
+        .typ = type_string,
+    };
+    // append the listener to the list of listeners for this target
+    gop.value_ptr.*.append(&listener.node);
+
+    // Track load listeners for script execution ignore list
+    if (type_string.eql(comptime .wrap("load"))) {
+        try self.ignore_list.append(self.arena, listener);
+    }
+}
+
+pub fn remove(self: *EventManager, target: *EventTarget, typ: []const u8, callback: Callback, use_capture: bool) void {
+    const list = self.lookup.get(.{
+        .type_string = .wrap(typ),
+        .event_target = @intFromPtr(target),
+    }) orelse return;
+    if (findListener(list, callback, use_capture)) |listener| {
+        self.removeListener(list, listener);
+    }
+}
+
+pub fn clearIgnoreList(self: *EventManager) void {
+    self.ignore_list.clearRetainingCapacity();
+}
+
+// Dispatching can be recursive from the compiler's point of view, so we need to
+// give it an explicit error set so that other parts of the code can use and
+// inferred error.
+const DispatchError = error{
+    OutOfMemory,
+    StringTooLarge,
+    JSExecCallback,
+    CompilationError,
+    ExecutionError,
+    JsException,
+};
+
+pub const DispatchOpts = struct {
+    // A "load" event triggered by a script (in ScriptManager) should not trigger
+    // a "load" listener added within that script. Therefore, any "load" listener
+    // that we add go into an ignore list until after the script finishes executing.
+    // The ignore list is only checked when apply_ignore  == true, which is only
+    // set by the ScriptManager when raising the script's "load" event.
+    apply_ignore: bool = false,
+};
+
+pub fn dispatch(self: *EventManager, target: *EventTarget, event: *Event) DispatchError!void {
+    return self.dispatchOpts(target, event, .{});
+}
+
+pub fn dispatchOpts(self: *EventManager, target: *EventTarget, event: *Event, comptime opts: DispatchOpts) DispatchError!void {
+    event.acquireRef();
+    defer event.deinit(false, self.page);
+
+    if (comptime IS_DEBUG) {
+        log.debug(.event, "eventManager.dispatch", .{ .type = event._type_string.str(), .bubbles = event._bubbles });
+    }
+
+    switch (target._type) {
+        .node => |node| try self.dispatchNode(node, event, opts),
+        else => try self.dispatchDirect(target, event, null, .{ .context = "dispatch" }),
+    }
+}
+
+// There are a lot of events that can be attached via addEventListener or as
+// a property, like the XHR events, or window.onload. You might think that the
+// property is just a shortcut for calling addEventListener, but they are distinct.
+// An event set via property cannot be removed by removeEventListener. If you
+// set both the property and add a listener, they both execute.
+const DispatchDirectOptions = struct {
+    context: []const u8,
+    inject_target: bool = true,
+};
+
+// Direct dispatch for non-DOM targets (Window, XHR, AbortSignal) or DOM nodes with
+// property handlers. No propagation - just calls the handler and registered listeners.
+// Handler can be: null, ?js.Function.Global, ?js.Function.Temp, or js.Function
+pub fn dispatchDirect(self: *EventManager, target: *EventTarget, event: *Event, handler: anytype, comptime opts: DispatchDirectOptions) !void {
+    const page = self.page;
+
+    event.acquireRef();
+    defer event.deinit(false, page);
+
+    if (comptime IS_DEBUG) {
+        log.debug(.event, "dispatchDirect", .{ .type = event._type_string, .context = opts.context });
+    }
+
+    if (comptime opts.inject_target) {
+        event._target = target;
+        event._dispatch_target = target; // Store original target for composedPath()
+    }
+
+    var was_dispatched = false;
+
+    var ls: js.Local.Scope = undefined;
+    page.js.localScope(&ls);
+    defer {
+        ls.local.runMicrotasks();
+        ls.deinit();
+    }
+
+    if (getFunction(handler, &ls.local)) |func| {
+        event._current_target = target;
+        if (func.callWithThis(void, target, .{event})) {
+            was_dispatched = true;
+        } else |err| {
+            // a non-JS error
+            log.warn(.event, opts.context, .{ .err = err });
+        }
+    }
+
+    // listeners reigstered via addEventListener
+    const list = self.lookup.get(.{
+        .event_target = @intFromPtr(target),
+        .type_string = event._type_string,
+    }) orelse return;
+
+    // This is a slightly simplified version of what you'll find in dispatchPhase
+    // It is simpler because, for direct dispatching, we know there's no ancestors
+    // and only the single target phase.
+
+    // Track dispatch depth for deferred removal
+    self.dispatch_depth += 1;
+    defer {
+        const dispatch_depth = self.dispatch_depth;
+        // Only destroy deferred listeners when we exit the outermost dispatch
+        if (dispatch_depth == 1) {
+            for (self.deferred_removals.items) |removal| {
+                removal.list.remove(&removal.listener.node);
+                self.listener_pool.destroy(removal.listener);
+            }
+            self.deferred_removals.clearRetainingCapacity();
+        } else {
+            self.dispatch_depth = dispatch_depth - 1;
+        }
+    }
+
+    // Use the last listener in the list as sentinel - listeners added during dispatch will be after it
+    const last_node = list.last orelse return;
+    const last_listener: *Listener = @alignCast(@fieldParentPtr("node", last_node));
+
+    // Iterate through the list, stopping after we've encountered the last_listener
+    var node = list.first;
+    var is_done = false;
+    while (node) |n| {
+        if (is_done) {
+            break;
+        }
+
+        const listener: *Listener = @alignCast(@fieldParentPtr("node", n));
+        is_done = (listener == last_listener);
+        node = n.next;
+
+        // Skip removed listeners
+        if (listener.removed) {
+            continue;
+        }
+
+        // If the listener has an aborted signal, remove it and skip
+        if (listener.signal) |signal| {
+            if (signal.getAborted()) {
+                self.removeListener(list, listener);
+                continue;
+            }
+        }
+
+        // Remove "once" listeners BEFORE calling them so nested dispatches don't see them
+        if (listener.once) {
+            self.removeListener(list, listener);
+        }
+
+        was_dispatched = true;
+        event._current_target = target;
+
+        switch (listener.function) {
+            .value => |value| try ls.toLocal(value).callWithThis(void, target, .{event}),
+            .string => |string| {
+                const str = try page.call_arena.dupeZ(u8, string.str());
+                try ls.local.eval(str, null);
+            },
+            .object => |obj_global| {
+                const obj = ls.toLocal(obj_global);
+                if (try obj.getFunction("handleEvent")) |handleEvent| {
+                    try handleEvent.callWithThis(void, obj, .{event});
+                }
+            },
+        }
+
+        if (event._stop_immediate_propagation) {
+            return;
+        }
+    }
+}
+
+fn getFunction(handler: anytype, local: *const js.Local) ?js.Function {
+    const T = @TypeOf(handler);
+    const ti = @typeInfo(T);
+
+    if (ti == .null) {
+        return null;
+    }
+    if (ti == .optional) {
+        return getFunction(handler orelse return null, local);
+    }
+    return switch (T) {
+        js.Function => handler,
+        js.Function.Temp => local.toLocal(handler),
+        js.Function.Global => local.toLocal(handler),
+        else => @compileError("handler must be null or \\??js.Function(\\.(Temp|Global))?"),
+    };
+}
+
+fn dispatchNode(self: *EventManager, target: *Node, event: *Event, comptime opts: DispatchOpts) !void {
+    const ShadowRoot = @import("webapi/ShadowRoot.zig");
+
+    {
+        const et = target.asEventTarget();
+        event._target = et;
+        event._dispatch_target = et; // Store original target for composedPath()
+    }
+
+    const page = self.page;
+    var was_handled = false;
+
+    defer if (was_handled) {
+        var ls: js.Local.Scope = undefined;
+        page.js.localScope(&ls);
+        defer ls.deinit();
+        ls.local.runMicrotasks();
+    };
+
+    const activation_state = ActivationState.create(event, target, page);
+
+    // Defer runs even on early return - ensures event phase is reset
+    // and default actions execute (unless prevented)
+    defer {
+        event._event_phase = .none;
+        event._stop_propagation = false;
+        event._stop_immediate_propagation = false;
+        // Handle checkbox/radio activation rollback or commit
+        if (activation_state) |state| {
+            state.restore(event, page);
+        }
+
+        // Execute default action if not prevented
+        if (event._prevent_default) {
+            // can't return in a defer (╯°□°)╯︵ ┻━┻
+        } else if (event._type_string.eql(comptime .wrap("click"))) {
+            page.handleClick(target) catch |err| {
+                log.warn(.event, "page.click", .{ .err = err });
+            };
+        } else if (event._type_string.eql(comptime .wrap("keydown"))) {
+            page.handleKeydown(target, event) catch |err| {
+                log.warn(.event, "page.keydown", .{ .err = err });
+            };
+        }
+    }
+
+    var path_len: usize = 0;
+    var path_buffer: [128]*EventTarget = undefined;
+
+    var node: ?*Node = target;
+    while (node) |n| {
+        if (path_len >= path_buffer.len) break;
+        path_buffer[path_len] = n.asEventTarget();
+        path_len += 1;
+
+        // Check if this node is a shadow root
+        if (n.is(ShadowRoot)) |shadow| {
+            event._needs_retargeting = true;
+
+            // If event is not composed, stop at shadow boundary
+            if (!event._composed) {
+                break;
+            }
+
+            // Otherwise, jump to the shadow host and continue
+            node = shadow._host.asNode();
+            continue;
+        }
+
+        node = n._parent;
+    }
+
+    // Even though the window isn't part of the DOM, most events propagate
+    // through it in the capture phase (unless we stopped at a shadow boundary)
+    // The only explicit exception is "load"
+    if (event._type_string.eql(comptime .wrap("load")) == false) {
+        if (path_len < path_buffer.len) {
+            path_buffer[path_len] = page.window.asEventTarget();
+            path_len += 1;
+        }
+    }
+
+    const path = path_buffer[0..path_len];
+
+    // Phase 1: Capturing phase (root → target, excluding target)
+    // This happens for all events, regardless of bubbling
+    event._event_phase = .capturing_phase;
+    var i: usize = path_len;
+    while (i > 1) {
+        i -= 1;
+        if (event._stop_propagation) return;
+        const current_target = path[i];
+        if (self.lookup.get(.{
+            .event_target = @intFromPtr(current_target),
+            .type_string = event._type_string,
+        })) |list| {
+            try self.dispatchPhase(list, current_target, event, &was_handled, comptime .init(true, opts));
+        }
+    }
+
+    // Phase 2: At target
+    if (event._stop_propagation) return;
+    event._event_phase = .at_target;
+    const target_et = target.asEventTarget();
+
+    blk: {
+        // Get inline handler (e.g., onclick property) for this target
+        if (self.getInlineHandler(target_et, event)) |inline_handler| {
+            was_handled = true;
+            event._current_target = target_et;
+
+            var ls: js.Local.Scope = undefined;
+            self.page.js.localScope(&ls);
+            defer ls.deinit();
+
+            try ls.toLocal(inline_handler).callWithThis(void, target_et, .{event});
+
+            if (event._stop_propagation) {
+                return;
+            }
+
+            if (event._stop_immediate_propagation) {
+                break :blk;
+            }
+        }
+
+        if (self.lookup.get(.{
+            .type_string = event._type_string,
+            .event_target = @intFromPtr(target_et),
+        })) |list| {
+            try self.dispatchPhase(list, target_et, event, &was_handled, comptime .init(null, opts));
+            if (event._stop_propagation) {
+                return;
+            }
+        }
+    }
+
+    // Phase 3: Bubbling phase (target → root, excluding target)
+    // This only happens if the event bubbles
+    if (event._bubbles) {
+        event._event_phase = .bubbling_phase;
+        for (path[1..]) |current_target| {
+            if (event._stop_propagation) break;
+            if (self.lookup.get(.{
+                .type_string = event._type_string,
+                .event_target = @intFromPtr(current_target),
+            })) |list| {
+                try self.dispatchPhase(list, current_target, event, &was_handled, comptime .init(false, opts));
+            }
+        }
+    }
+}
+
+const DispatchPhaseOpts = struct {
+    capture_only: ?bool = null,
+    apply_ignore: bool = false,
+
+    fn init(capture_only: ?bool, opts: DispatchOpts) DispatchPhaseOpts {
+        return .{
+            .capture_only = capture_only,
+            .apply_ignore = opts.apply_ignore,
+        };
+    }
+};
+
+fn dispatchPhase(self: *EventManager, list: *std.DoublyLinkedList, current_target: *EventTarget, event: *Event, was_handled: *bool, comptime opts: DispatchPhaseOpts) !void {
+    const page = self.page;
+
+    // Track dispatch depth for deferred removal
+    self.dispatch_depth += 1;
+    defer {
+        const dispatch_depth = self.dispatch_depth;
+        // Only destroy deferred listeners when we exit the outermost dispatch
+        if (dispatch_depth == 1) {
+            for (self.deferred_removals.items) |removal| {
+                removal.list.remove(&removal.listener.node);
+                self.listener_pool.destroy(removal.listener);
+            }
+            self.deferred_removals.clearRetainingCapacity();
+        } else {
+            self.dispatch_depth = dispatch_depth - 1;
+        }
+    }
+
+    // Use the last listener in the list as sentinel - listeners added during dispatch will be after it
+    const last_node = list.last orelse return;
+    const last_listener: *Listener = @alignCast(@fieldParentPtr("node", last_node));
+
+    // Iterate through the list, stopping after we've encountered the last_listener
+    var node = list.first;
+    var is_done = false;
+    node_loop: while (node) |n| {
+        if (is_done) {
+            break;
+        }
+
+        const listener: *Listener = @alignCast(@fieldParentPtr("node", n));
+        is_done = (listener == last_listener);
+        node = n.next;
+
+        // Skip non-matching listeners
+        if (comptime opts.capture_only) |capture| {
+            if (listener.capture != capture) {
+                continue;
+            }
+        }
+
+        // Skip removed listeners
+        if (listener.removed) {
+            continue;
+        }
+
+        // If the listener has an aborted signal, remove it and skip
+        if (listener.signal) |signal| {
+            if (signal.getAborted()) {
+                self.removeListener(list, listener);
+                continue;
+            }
+        }
+
+        if (comptime opts.apply_ignore) {
+            for (self.ignore_list.items) |ignored| {
+                if (ignored == listener) {
+                    continue :node_loop;
+                }
+            }
+        }
+
+        // Remove "once" listeners BEFORE calling them so nested dispatches don't see them
+        if (listener.once) {
+            self.removeListener(list, listener);
+        }
+
+        was_handled.* = true;
+        event._current_target = current_target;
+
+        // Compute adjusted target for shadow DOM retargeting (only if needed)
+        const original_target = event._target;
+        if (event._needs_retargeting) {
+            event._target = getAdjustedTarget(original_target, current_target);
+        }
+
+        var ls: js.Local.Scope = undefined;
+        page.js.localScope(&ls);
+        defer ls.deinit();
+
+        switch (listener.function) {
+            .value => |value| try ls.toLocal(value).callWithThis(void, current_target, .{event}),
+            .string => |string| {
+                const str = try page.call_arena.dupeZ(u8, string.str());
+                try ls.local.eval(str, null);
+            },
+            .object => |obj_global| {
+                const obj = ls.toLocal(obj_global);
+                if (try obj.getFunction("handleEvent")) |handleEvent| {
+                    try handleEvent.callWithThis(void, obj, .{event});
+                }
+            },
+        }
+
+        // Restore original target (only if we changed it)
+        if (event._needs_retargeting) {
+            event._target = original_target;
+        }
+
+        if (event._stop_immediate_propagation) {
+            return;
+        }
+    }
+}
+
+fn getInlineHandler(self: *EventManager, target: *EventTarget, event: *Event) ?js.Function.Global {
+    const global_event_handlers = @import("webapi/global_event_handlers.zig");
+    const handler_type = global_event_handlers.fromEventType(event._type_string.str()) orelse return null;
+
+    // Look up the inline handler for this target
+    const html_element = switch (target._type) {
+        .node => |n| n.is(Element.Html) orelse return null,
+        else => return null,
+    };
+
+    return html_element.getAttributeFunction(handler_type, self.page) catch |err| {
+        log.warn(.event, "inline html callback", .{ .type = handler_type, .err = err });
+        return null;
+    };
+}
+
+fn removeListener(self: *EventManager, list: *std.DoublyLinkedList, listener: *Listener) void {
+    // If we're in a dispatch, defer removal to avoid invalidating iteration
+    if (self.dispatch_depth > 0) {
+        listener.removed = true;
+        self.deferred_removals.append(self.arena, .{ .list = list, .listener = listener }) catch unreachable;
+    } else {
+        // Outside dispatch, remove immediately
+        list.remove(&listener.node);
+        self.listener_pool.destroy(listener);
+    }
+}
+
+fn findListener(list: *const std.DoublyLinkedList, callback: Callback, capture: bool) ?*Listener {
+    var node = list.first;
+    while (node) |n| {
+        node = n.next;
+        const listener: *Listener = @alignCast(@fieldParentPtr("node", n));
+        const matches = switch (callback) {
+            .object => |obj| listener.function.eqlObject(obj),
+            .function => |func| listener.function.eqlFunction(func),
+        };
+        if (!matches) {
+            continue;
+        }
+        if (listener.capture != capture) {
+            continue;
+        }
+        return listener;
+    }
+    return null;
+}
+
+const Listener = struct {
+    typ: String,
+    once: bool,
+    capture: bool,
+    passive: bool,
+    function: Function,
+    signal: ?*@import("webapi/AbortSignal.zig") = null,
+    node: std.DoublyLinkedList.Node,
+    removed: bool = false,
+};
+
+const Function = union(enum) {
+    value: js.Function.Global,
+    string: String,
+    object: js.Object.Global,
+
+    fn eqlFunction(self: Function, func: js.Function) bool {
+        return switch (self) {
+            .value => |v| v.isEqual(func),
+            else => false,
+        };
+    }
+
+    fn eqlObject(self: Function, obj: js.Object) bool {
+        return switch (self) {
+            .object => |o| return o.isEqual(obj),
+            else => false,
+        };
+    }
+};
+
+// Computes the adjusted target for shadow DOM event retargeting
+// Returns the lowest shadow-including ancestor of original_target that is
+// also an ancestor-or-self of current_target
+fn getAdjustedTarget(original_target: ?*EventTarget, current_target: *EventTarget) ?*EventTarget {
+    const ShadowRoot = @import("webapi/ShadowRoot.zig");
+
+    const orig_node = switch ((original_target orelse return null)._type) {
+        .node => |n| n,
+        else => return original_target,
+    };
+    const curr_node = switch (current_target._type) {
+        .node => |n| n,
+        else => return original_target,
+    };
+
+    // Walk up from original target, checking if we can reach current target
+    var node: ?*Node = orig_node;
+    while (node) |n| {
+        // Check if current_target is an ancestor of n (or n itself)
+        if (isAncestorOrSelf(curr_node, n)) {
+            return n.asEventTarget();
+        }
+
+        // Cross shadow boundary if needed
+        if (n.is(ShadowRoot)) |shadow| {
+            node = shadow._host.asNode();
+            continue;
+        }
+
+        node = n._parent;
+    }
+
+    return original_target;
+}
+
+// Check if ancestor is an ancestor of (or the same as) node
+// WITHOUT crossing shadow boundaries (just regular DOM tree)
+fn isAncestorOrSelf(ancestor: *Node, node: *Node) bool {
+    if (ancestor == node) {
+        return true;
+    }
+
+    var current: ?*Node = node._parent;
+    while (current) |n| {
+        if (n == ancestor) {
+            return true;
+        }
+        current = n._parent;
+    }
+
+    return false;
+}
+
+// Handles the default action for clicking on input checked/radio. Maybe this
+// could be generalized if needed, but I'm not sure. This wasn't obvious to me
+// but when an input is clicked, it's important to think about both the intent
+// and the actual result. Imagine you have an unchecked checkbox. When clicked,
+// the checkbox immediately becomes checked, and event handlers see this "checked"
+// intent. But a listener can preventDefault() in which case the check we did at
+// the start will be undone.
+// This is a bit more complicated for radio buttons, as the checking/unchecking
+// and the rollback can impact a different radio input. So if you "check" a radio
+// the intent is that it becomes checked and whatever was checked before becomes
+// unchecked, so that if you have to rollback (because of a preventDefault())
+// then both inputs have to revert to their original values.
+const ActivationState = struct {
+    old_checked: bool,
+    input: *Element.Html.Input,
+    previously_checked_radio: ?*Input,
+
+    const Input = Element.Html.Input;
+
+    fn create(event: *const Event, target: *Node, page: *Page) ?ActivationState {
+        if (event._type_string.eql(comptime .wrap("click")) == false) {
+            return null;
+        }
+
+        const input = target.is(Element.Html.Input) orelse return null;
+        if (input._input_type != .checkbox and input._input_type != .radio) {
+            return null;
+        }
+
+        const old_checked = input._checked;
+        var previously_checked_radio: ?*Element.Html.Input = null;
+
+        // For radio buttons, find the currently checked radio in the group
+        if (input._input_type == .radio and !old_checked) {
+            previously_checked_radio = try findCheckedRadioInGroup(input, page);
+        }
+
+        // Toggle checkbox or check radio (which unchecks others in group)
+        const new_checked = if (input._input_type == .checkbox) !old_checked else true;
+        try input.setChecked(new_checked, page);
+
+        return .{
+            .input = input,
+            .old_checked = old_checked,
+            .previously_checked_radio = previously_checked_radio,
+        };
+    }
+
+    fn restore(self: *const ActivationState, event: *const Event, page: *Page) void {
+        const input = self.input;
+        if (event._prevent_default) {
+            // Rollback: restore previous state
+            input._checked = self.old_checked;
+            input._checked_dirty = true;
+            if (self.previously_checked_radio) |prev_radio| {
+                prev_radio._checked = true;
+                prev_radio._checked_dirty = true;
+            }
+            return;
+        }
+
+        // Commit: fire input and change events only if state actually changed
+        // and the element is connected to a document (detached elements don't fire).
+        // For checkboxes, state always changes. For radios, only if was unchecked.
+        const state_changed = (input._input_type == .checkbox) or !self.old_checked;
+        if (state_changed and input.asElement().asNode().isConnected()) {
+            fireEvent(page, input, "input") catch |err| {
+                log.warn(.event, "input event", .{ .err = err });
+            };
+            fireEvent(page, input, "change") catch |err| {
+                log.warn(.event, "change event", .{ .err = err });
+            };
+        }
+    }
+
+    fn findCheckedRadioInGroup(input: *Input, page: *Page) !?*Input {
+        const elem = input.asElement();
+
+        const name = elem.getAttributeSafe(comptime .wrap("name")) orelse return null;
+        if (name.len == 0) {
+            return null;
+        }
+
+        const form = input.getForm(page);
+
+        // Walk from the root of the tree containing this element
+        // This handles both document-attached and orphaned elements
+        const root = elem.asNode().getRootNode(null);
+
+        const TreeWalker = @import("webapi/TreeWalker.zig");
+        var walker = TreeWalker.Full.init(root, .{});
+
+        while (walker.next()) |node| {
+            const other_element = node.is(Element) orelse continue;
+            const other_input = other_element.is(Input) orelse continue;
+
+            if (other_input._input_type != .radio) {
+                continue;
+            }
+
+            // Skip the input we're checking from
+            if (other_input == input) {
+                continue;
+            }
+
+            const other_name = other_element.getAttributeSafe(comptime .wrap("name")) orelse continue;
+            if (!std.mem.eql(u8, name, other_name)) {
+                continue;
+            }
+
+            // Check if same form context
+            const other_form = other_input.getForm(page);
+            if (form) |f| {
+                const of = other_form orelse continue;
+                if (f != of) {
+                    continue; // Different forms
+                }
+            } else if (other_form != null) {
+                continue; // form is null but other has a form
+            }
+
+            if (other_input._checked) {
+                return other_input;
+            }
+        }
+
+        return null;
+    }
+
+    // Fire input or change event
+    fn fireEvent(page: *Page, input: *Input, comptime typ: []const u8) !void {
+        const event = try Event.initTrusted(comptime .wrap(typ), .{
+            .bubbles = true,
+            .cancelable = false,
+        }, page);
+
+        const target = input.asElement().asEventTarget();
+        try page._event_manager.dispatch(target, event);
+    }
+};

src/browser/Factory.zig

@@ -0,0 +1,461 @@
+// Copyright (C) 2023-2026  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const builtin = @import("builtin");
+const reflect = @import("reflect.zig");
+
+const log = @import("../log.zig");
+const String = @import("../string.zig").String;
+
+const SlabAllocator = @import("../slab.zig").SlabAllocator;
+
+const Page = @import("Page.zig");
+const Node = @import("webapi/Node.zig");
+const Event = @import("webapi/Event.zig");
+const UIEvent = @import("webapi/event/UIEvent.zig");
+const MouseEvent = @import("webapi/event/MouseEvent.zig");
+const Element = @import("webapi/Element.zig");
+const Document = @import("webapi/Document.zig");
+const EventTarget = @import("webapi/EventTarget.zig");
+const XMLHttpRequestEventTarget = @import("webapi/net/XMLHttpRequestEventTarget.zig");
+const Blob = @import("webapi/Blob.zig");
+const AbstractRange = @import("webapi/AbstractRange.zig");
+
+const Allocator = std.mem.Allocator;
+
+const IS_DEBUG = builtin.mode == .Debug;
+const assert = std.debug.assert;
+
+// Shared across all frames of a Page.
+const Factory = @This();
+
+_arena: Allocator,
+_slab: SlabAllocator,
+
+pub fn init(arena: Allocator) !*Factory {
+    const self = try arena.create(Factory);
+    self.* = .{
+        ._arena = arena,
+        ._slab = SlabAllocator.init(arena, 128),
+    };
+    return self;
+}
+
+// this is a root object
+pub fn eventTarget(self: *Factory, child: anytype) !*@TypeOf(child) {
+    return self.eventTargetWithAllocator(self._slab.allocator(), child);
+}
+
+pub fn eventTargetWithAllocator(_: *const Factory, allocator: Allocator, child: anytype) !*@TypeOf(child) {
+    const chain = try PrototypeChain(
+        &.{ EventTarget, @TypeOf(child) },
+    ).allocate(allocator);
+
+    const event_ptr = chain.get(0);
+    event_ptr.* = .{
+        ._type = unionInit(EventTarget.Type, chain.get(1)),
+    };
+    chain.setLeaf(1, child);
+
+    return chain.get(1);
+}
+
+pub fn standaloneEventTarget(self: *Factory, child: anytype) !*EventTarget {
+    const allocator = self._slab.allocator();
+    const et = try allocator.create(EventTarget);
+    et.* = .{ ._type = unionInit(EventTarget.Type, child) };
+    return et;
+}
+
+// this is a root object
+pub fn event(_: *const Factory, arena: Allocator, typ: String, child: anytype) !*@TypeOf(child) {
+    const chain = try PrototypeChain(
+        &.{ Event, @TypeOf(child) },
+    ).allocate(arena);
+
+    // Special case: Event has a _type_string field, so we need manual setup
+    const event_ptr = chain.get(0);
+    event_ptr.* = try eventInit(arena, typ, chain.get(1));
+    chain.setLeaf(1, child);
+
+    return chain.get(1);
+}
+
+pub fn uiEvent(_: *const Factory, arena: Allocator, typ: String, child: anytype) !*@TypeOf(child) {
+    const chain = try PrototypeChain(
+        &.{ Event, UIEvent, @TypeOf(child) },
+    ).allocate(arena);
+
+    // Special case: Event has a _type_string field, so we need manual setup
+    const event_ptr = chain.get(0);
+    event_ptr.* = try eventInit(arena, typ, chain.get(1));
+    chain.setMiddle(1, UIEvent.Type);
+    chain.setLeaf(2, child);
+
+    return chain.get(2);
+}
+
+pub fn mouseEvent(_: *const Factory, arena: Allocator, typ: String, mouse: MouseEvent, child: anytype) !*@TypeOf(child) {
+    const chain = try PrototypeChain(
+        &.{ Event, UIEvent, MouseEvent, @TypeOf(child) },
+    ).allocate(arena);
+
+    // Special case: Event has a _type_string field, so we need manual setup
+    const event_ptr = chain.get(0);
+    event_ptr.* = try eventInit(arena, typ, chain.get(1));
+    chain.setMiddle(1, UIEvent.Type);
+
+    // Set MouseEvent with all its fields
+    const mouse_ptr = chain.get(2);
+    mouse_ptr.* = mouse;
+    mouse_ptr._proto = chain.get(1);
+    mouse_ptr._type = unionInit(MouseEvent.Type, chain.get(3));
+
+    chain.setLeaf(3, child);
+
+    return chain.get(3);
+}
+
+fn PrototypeChain(comptime types: []const type) type {
+    return struct {
+        const Self = @This();
+        memory: []u8,
+
+        fn totalSize() usize {
+            var size: usize = 0;
+            for (types) |T| {
+                size = std.mem.alignForward(usize, size, @alignOf(T));
+                size += @sizeOf(T);
+            }
+            return size;
+        }
+
+        fn maxAlign() std.mem.Alignment {
+            var alignment: std.mem.Alignment = .@"1";
+
+            for (types) |T| {
+                alignment = std.mem.Alignment.max(alignment, std.mem.Alignment.of(T));
+            }
+
+            return alignment;
+        }
+
+        fn getType(comptime index: usize) type {
+            return types[index];
+        }
+
+        fn allocate(allocator: std.mem.Allocator) !Self {
+            const size = comptime Self.totalSize();
+            const alignment = comptime Self.maxAlign();
+
+            const memory = try allocator.alignedAlloc(u8, alignment, size);
+            return .{ .memory = memory };
+        }
+
+        fn get(self: *const Self, comptime index: usize) *getType(index) {
+            var offset: usize = 0;
+            inline for (types, 0..) |T, i| {
+                offset = std.mem.alignForward(usize, offset, @alignOf(T));
+
+                if (i == index) {
+                    return @as(*T, @ptrCast(@alignCast(self.memory.ptr + offset)));
+                }
+                offset += @sizeOf(T);
+            }
+            unreachable;
+        }
+
+        fn set(self: *const Self, comptime index: usize, value: getType(index)) void {
+            const ptr = self.get(index);
+            ptr.* = value;
+        }
+
+        fn setRoot(self: *const Self, comptime T: type) void {
+            const ptr = self.get(0);
+            ptr.* = .{ ._type = unionInit(T, self.get(1)) };
+        }
+
+        fn setMiddle(self: *const Self, comptime index: usize, comptime T: type) void {
+            assert(index >= 1);
+            assert(index < types.len);
+
+            const ptr = self.get(index);
+            ptr.* = .{ ._proto = self.get(index - 1), ._type = unionInit(T, self.get(index + 1)) };
+        }
+
+        fn setMiddleWithValue(self: *const Self, comptime index: usize, comptime T: type, value: anytype) void {
+            assert(index >= 1);
+
+            const ptr = self.get(index);
+            ptr.* = .{ ._proto = self.get(index - 1), ._type = unionInit(T, value) };
+        }
+
+        fn setLeaf(self: *const Self, comptime index: usize, value: anytype) void {
+            assert(index >= 1);
+
+            const ptr = self.get(index);
+            ptr.* = value;
+            ptr._proto = self.get(index - 1);
+        }
+    };
+}
+
+fn AutoPrototypeChain(comptime types: []const type) type {
+    return struct {
+        fn create(allocator: std.mem.Allocator, leaf_value: anytype) !*@TypeOf(leaf_value) {
+            const chain = try PrototypeChain(types).allocate(allocator);
+
+            const RootType = types[0];
+            chain.setRoot(RootType.Type);
+
+            inline for (1..types.len - 1) |i| {
+                const MiddleType = types[i];
+                chain.setMiddle(i, MiddleType.Type);
+            }
+
+            chain.setLeaf(types.len - 1, leaf_value);
+            return chain.get(types.len - 1);
+        }
+    };
+}
+
+fn eventInit(arena: Allocator, typ: String, value: anytype) !Event {
+    // Round to 2ms for privacy (browsers do this)
+    const raw_timestamp = @import("../datetime.zig").milliTimestamp(.monotonic);
+    const time_stamp = (raw_timestamp / 2) * 2;
+
+    return .{
+        ._rc = 0,
+        ._arena = arena,
+        ._type = unionInit(Event.Type, value),
+        ._type_string = typ,
+        ._time_stamp = time_stamp,
+    };
+}
+
+pub fn blob(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+
+    // Special case: Blob has slice and mime fields, so we need manual setup
+    const chain = try PrototypeChain(
+        &.{ Blob, @TypeOf(child) },
+    ).allocate(allocator);
+
+    const blob_ptr = chain.get(0);
+    blob_ptr.* = .{
+        ._type = unionInit(Blob.Type, chain.get(1)),
+        ._slice = "",
+        ._mime = "",
+    };
+    chain.setLeaf(1, child);
+
+    return chain.get(1);
+}
+
+pub fn abstractRange(self: *Factory, child: anytype, page: *Page) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    const chain = try PrototypeChain(&.{ AbstractRange, @TypeOf(child) }).allocate(allocator);
+
+    const doc = page.document.asNode();
+    chain.set(0, AbstractRange{
+        ._type = unionInit(AbstractRange.Type, chain.get(1)),
+        ._end_offset = 0,
+        ._start_offset = 0,
+        ._end_container = doc,
+        ._start_container = doc,
+    });
+    chain.setLeaf(1, child);
+    return chain.get(1);
+}
+
+pub fn node(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    return try AutoPrototypeChain(
+        &.{ EventTarget, Node, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn document(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    return try AutoPrototypeChain(
+        &.{ EventTarget, Node, Document, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn documentFragment(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    return try AutoPrototypeChain(
+        &.{ EventTarget, Node, Node.DocumentFragment, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn element(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    return try AutoPrototypeChain(
+        &.{ EventTarget, Node, Element, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn htmlElement(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    return try AutoPrototypeChain(
+        &.{ EventTarget, Node, Element, Element.Html, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn htmlMediaElement(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    return try AutoPrototypeChain(
+        &.{ EventTarget, Node, Element, Element.Html, Element.Html.Media, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn svgElement(self: *Factory, tag_name: []const u8, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    const ChildT = @TypeOf(child);
+
+    if (ChildT == Element.Svg) {
+        return self.element(child);
+    }
+
+    const chain = try PrototypeChain(
+        &.{ EventTarget, Node, Element, Element.Svg, ChildT },
+    ).allocate(allocator);
+
+    chain.setRoot(EventTarget.Type);
+    chain.setMiddle(1, Node.Type);
+    chain.setMiddle(2, Element.Type);
+
+    // will never allocate, can't fail
+    const tag_name_str = String.init(self._arena, tag_name, .{}) catch unreachable;
+
+    // Manually set Element.Svg with the tag_name
+    chain.set(3, .{
+        ._proto = chain.get(2),
+        ._tag_name = tag_name_str,
+        ._type = unionInit(Element.Svg.Type, chain.get(4)),
+    });
+
+    chain.setLeaf(4, child);
+    return chain.get(4);
+}
+
+pub fn xhrEventTarget(_: *const Factory, allocator: Allocator, child: anytype) !*@TypeOf(child) {
+    return try AutoPrototypeChain(
+        &.{ EventTarget, XMLHttpRequestEventTarget, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn textTrackCue(self: *Factory, child: anytype) !*@TypeOf(child) {
+    const allocator = self._slab.allocator();
+    const TextTrackCue = @import("webapi/media/TextTrackCue.zig");
+
+    return try AutoPrototypeChain(
+        &.{ EventTarget, TextTrackCue, @TypeOf(child) },
+    ).create(allocator, child);
+}
+
+pub fn destroy(self: *Factory, value: anytype) void {
+    const S = reflect.Struct(@TypeOf(value));
+
+    if (comptime IS_DEBUG) {
+        // We should always destroy from the leaf down.
+        if (@hasDecl(S, "_prototype_root")) {
+            // A Event{._type == .generic} (or any other similar types)
+            // _should_ be destoyed directly. The _type = .generic is a pseudo
+            // child
+            if (S != Event or value._type != .generic) {
+                log.fatal(.bug, "factory.destroy.event", .{ .type = @typeName(S) });
+                unreachable;
+            }
+        }
+    }
+
+    if (comptime @hasField(S, "_proto")) {
+        self.destroyChain(value, 0, std.mem.Alignment.@"1");
+    } else {
+        self.destroyStandalone(value);
+    }
+}
+
+pub fn destroyStandalone(self: *Factory, value: anytype) void {
+    const allocator = self._slab.allocator();
+    allocator.destroy(value);
+}
+
+fn destroyChain(
+    self: *Factory,
+    value: anytype,
+    old_size: usize,
+    old_align: std.mem.Alignment,
+) void {
+    const S = reflect.Struct(@TypeOf(value));
+    const allocator = self._slab.allocator();
+
+    // aligns the old size to the alignment of this element
+    const current_size = std.mem.alignForward(usize, old_size, @alignOf(S));
+    const new_size = current_size + @sizeOf(S);
+    const new_align = std.mem.Alignment.max(old_align, std.mem.Alignment.of(S));
+
+    if (@hasField(S, "_proto")) {
+        self.destroyChain(value._proto, new_size, new_align);
+    } else {
+        // no proto so this is the head of the chain.
+        // we use this as the ptr to the start of the chain.
+        // and we have summed up the length.
+        assert(@hasDecl(S, "_prototype_root"));
+
+        const memory_ptr: [*]u8 = @ptrCast(@constCast(value));
+        const len = std.mem.alignForward(usize, new_size, new_align.toByteUnits());
+        allocator.rawFree(memory_ptr[0..len], new_align, @returnAddress());
+    }
+}
+
+pub fn createT(self: *Factory, comptime T: type) !*T {
+    const allocator = self._slab.allocator();
+    return try allocator.create(T);
+}
+
+pub fn create(self: *Factory, value: anytype) !*@TypeOf(value) {
+    const ptr = try self.createT(@TypeOf(value));
+    ptr.* = value;
+    return ptr;
+}
+
+fn unionInit(comptime T: type, value: anytype) T {
+    const V = @TypeOf(value);
+    const field_name = comptime unionFieldName(T, V);
+    return @unionInit(T, field_name, value);
+}
+
+// There can be friction between comptime and runtime. Comptime has to
+// account for all possible types, even if some runtime flow makes certain
+// cases impossible. At runtime, we always call `unionFieldName` with the
+// correct struct or pointer type. But at comptime time, `unionFieldName`
+// is called with both variants (S and *S). So we use reflect.Struct().
+// This only works because we never have a union with a field S and another
+// field *S.
+fn unionFieldName(comptime T: type, comptime V: type) []const u8 {
+    inline for (@typeInfo(T).@"union".fields) |field| {
+        if (reflect.Struct(field.type) == reflect.Struct(V)) {
+            return field.name;
+        }
+    }
+    @compileError(@typeName(V) ++ " is not a valid type for " ++ @typeName(T) ++ ".type");
+}

src/browser/Mime.zig

@@ -0,0 +1,578 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+
+const Mime = @This();
+content_type: ContentType,
+params: []const u8 = "",
+// IANA defines max. charset value length as 40.
+// We keep 41 for null-termination since HTML parser expects in this format.
+charset: [41]u8 = default_charset,
+charset_len: usize = default_charset_len,
+
+/// String "UTF-8" continued by null characters.
+const default_charset = .{ 'U', 'T', 'F', '-', '8' } ++ .{0} ** 36;
+const default_charset_len = 5;
+
+/// Mime with unknown Content-Type, empty params and empty charset.
+pub const unknown = Mime{ .content_type = .{ .unknown = {} } };
+
+pub const ContentTypeEnum = enum {
+    text_xml,
+    text_html,
+    text_javascript,
+    text_plain,
+    text_css,
+    image_jpeg,
+    image_gif,
+    image_png,
+    image_webp,
+    application_json,
+    unknown,
+    other,
+};
+
+pub const ContentType = union(ContentTypeEnum) {
+    text_xml: void,
+    text_html: void,
+    text_javascript: void,
+    text_plain: void,
+    text_css: void,
+    image_jpeg: void,
+    image_gif: void,
+    image_png: void,
+    image_webp: void,
+    application_json: void,
+    unknown: void,
+    other: struct { type: []const u8, sub_type: []const u8 },
+};
+
+pub fn contentTypeString(mime: *const Mime) []const u8 {
+    return switch (mime.content_type) {
+        .text_xml => "text/xml",
+        .text_html => "text/html",
+        .text_javascript => "application/javascript",
+        .text_plain => "text/plain",
+        .text_css => "text/css",
+        .image_jpeg => "image/jpeg",
+        .image_png => "image/png",
+        .image_gif => "image/gif",
+        .image_webp => "image/webp",
+        .application_json => "application/json",
+        else => "",
+    };
+}
+
+/// Returns the null-terminated charset value.
+pub fn charsetStringZ(mime: *const Mime) [:0]const u8 {
+    return mime.charset[0..mime.charset_len :0];
+}
+
+pub fn charsetString(mime: *const Mime) []const u8 {
+    return mime.charset[0..mime.charset_len];
+}
+
+/// Removes quotes of value if quotes are given.
+///
+/// Currently we don't validate the charset.
+/// See section 2.3 Naming Requirements:
+/// https://datatracker.ietf.org/doc/rfc2978/
+fn parseCharset(value: []const u8) error{ CharsetTooBig, Invalid }![]const u8 {
+    // Cannot be larger than 40.
+    // https://datatracker.ietf.org/doc/rfc2978/
+    if (value.len > 40) return error.CharsetTooBig;
+
+    // If the first char is a quote, look for a pair.
+    if (value[0] == '"') {
+        if (value.len < 3 or value[value.len - 1] != '"') {
+            return error.Invalid;
+        }
+
+        return value[1 .. value.len - 1];
+    }
+
+    // No quotes.
+    return value;
+}
+
+pub fn parse(input: []u8) !Mime {
+    if (input.len > 255) {
+        return error.TooBig;
+    }
+
+    // Zig's trim API is broken. The return type is always `[]const u8`,
+    // even if the input type is `[]u8`. @constCast is safe here.
+    var normalized = @constCast(std.mem.trim(u8, input, &std.ascii.whitespace));
+    _ = std.ascii.lowerString(normalized, normalized);
+
+    const content_type, const type_len = try parseContentType(normalized);
+    if (type_len >= normalized.len) {
+        return .{ .content_type = content_type };
+    }
+
+    const params = trimLeft(normalized[type_len..]);
+
+    var charset: [41]u8 = default_charset;
+    var charset_len: usize = default_charset_len;
+
+    var it = std.mem.splitScalar(u8, params, ';');
+    while (it.next()) |attr| {
+        const i = std.mem.indexOfScalarPos(u8, attr, 0, '=') orelse continue;
+        const name = trimLeft(attr[0..i]);
+
+        const value = trimRight(attr[i + 1 ..]);
+        if (value.len == 0) {
+            continue;
+        }
+
+        const attribute_name = std.meta.stringToEnum(enum {
+            charset,
+        }, name) orelse continue;
+
+        switch (attribute_name) {
+            .charset => {
+                if (value.len == 0) {
+                    break;
+                }
+
+                const attribute_value = parseCharset(value) catch continue;
+                @memcpy(charset[0..attribute_value.len], attribute_value);
+                // Null-terminate right after attribute value.
+                charset[attribute_value.len] = 0;
+                charset_len = attribute_value.len;
+            },
+        }
+    }
+
+    return .{
+        .params = params,
+        .charset = charset,
+        .charset_len = charset_len,
+        .content_type = content_type,
+    };
+}
+
+pub fn sniff(body: []const u8) ?Mime {
+    // 0x0C is form feed
+    const content = std.mem.trimLeft(u8, body, &.{ ' ', '\t', '\n', '\r', 0x0C });
+    if (content.len == 0) {
+        return null;
+    }
+
+    if (content[0] != '<') {
+        if (std.mem.startsWith(u8, content, &.{ 0xEF, 0xBB, 0xBF })) {
+            // UTF-8 BOM
+            return .{ .content_type = .{ .text_plain = {} } };
+        }
+        if (std.mem.startsWith(u8, content, &.{ 0xFE, 0xFF })) {
+            // UTF-16 big-endian BOM
+            return .{ .content_type = .{ .text_plain = {} } };
+        }
+        if (std.mem.startsWith(u8, content, &.{ 0xFF, 0xFE })) {
+            // UTF-16 little-endian BOM
+            return .{ .content_type = .{ .text_plain = {} } };
+        }
+        return null;
+    }
+
+    // The longest prefix we have is "<!DOCTYPE HTML ", 15 bytes. If we're
+    // here, we already know content[0] == '<', so we can skip that. So 14
+    // bytes.
+
+    // +1 because we don't need the leading '<'
+    var buf: [14]u8 = undefined;
+
+    const stripped = content[1..];
+    const prefix_len = @min(stripped.len, buf.len);
+    const prefix = std.ascii.lowerString(&buf, stripped[0..prefix_len]);
+
+    // we already know it starts with a <
+    const known_prefixes = [_]struct { []const u8, ContentType }{
+        .{ "!doctype html", .{ .text_html = {} } },
+        .{ "html", .{ .text_html = {} } },
+        .{ "script", .{ .text_html = {} } },
+        .{ "iframe", .{ .text_html = {} } },
+        .{ "h1", .{ .text_html = {} } },
+        .{ "div", .{ .text_html = {} } },
+        .{ "font", .{ .text_html = {} } },
+        .{ "table", .{ .text_html = {} } },
+        .{ "a", .{ .text_html = {} } },
+        .{ "style", .{ .text_html = {} } },
+        .{ "title", .{ .text_html = {} } },
+        .{ "b", .{ .text_html = {} } },
+        .{ "body", .{ .text_html = {} } },
+        .{ "br", .{ .text_html = {} } },
+        .{ "p", .{ .text_html = {} } },
+        .{ "!--", .{ .text_html = {} } },
+        .{ "xml", .{ .text_xml = {} } },
+    };
+    inline for (known_prefixes) |kp| {
+        const known_prefix = kp.@"0";
+        if (std.mem.startsWith(u8, prefix, known_prefix) and prefix.len > known_prefix.len) {
+            const next = prefix[known_prefix.len];
+            // a "tag-terminating-byte"
+            if (next == ' ' or next == '>') {
+                return .{ .content_type = kp.@"1" };
+            }
+        }
+    }
+
+    return null;
+}
+
+pub fn isHTML(self: *const Mime) bool {
+    return self.content_type == .text_html;
+}
+
+// we expect value to be lowercase
+fn parseContentType(value: []const u8) !struct { ContentType, usize } {
+    const end = std.mem.indexOfScalarPos(u8, value, 0, ';') orelse value.len;
+    const type_name = trimRight(value[0..end]);
+    const attribute_start = end + 1;
+
+    if (std.meta.stringToEnum(enum {
+        @"text/xml",
+        @"text/html",
+        @"text/css",
+        @"text/plain",
+
+        @"text/javascript",
+        @"application/javascript",
+        @"application/x-javascript",
+
+        @"image/jpeg",
+        @"image/png",
+        @"image/gif",
+        @"image/webp",
+
+        @"application/json",
+    }, type_name)) |known_type| {
+        const ct: ContentType = switch (known_type) {
+            .@"text/xml" => .{ .text_xml = {} },
+            .@"text/html" => .{ .text_html = {} },
+            .@"text/javascript", .@"application/javascript", .@"application/x-javascript" => .{ .text_javascript = {} },
+            .@"text/plain" => .{ .text_plain = {} },
+            .@"text/css" => .{ .text_css = {} },
+            .@"image/jpeg" => .{ .image_jpeg = {} },
+            .@"image/png" => .{ .image_png = {} },
+            .@"image/gif" => .{ .image_gif = {} },
+            .@"image/webp" => .{ .image_webp = {} },
+            .@"application/json" => .{ .application_json = {} },
+        };
+        return .{ ct, attribute_start };
+    }
+
+    const separator = std.mem.indexOfScalarPos(u8, type_name, 0, '/') orelse return error.Invalid;
+
+    const main_type = value[0..separator];
+    const sub_type = trimRight(value[separator + 1 .. end]);
+
+    if (main_type.len == 0 or validType(main_type) == false) {
+        return error.Invalid;
+    }
+    if (sub_type.len == 0 or validType(sub_type) == false) {
+        return error.Invalid;
+    }
+
+    return .{ .{ .other = .{
+        .type = main_type,
+        .sub_type = sub_type,
+    } }, attribute_start };
+}
+
+const VALID_CODEPOINTS = blk: {
+    var v: [256]bool = undefined;
+    for (0..256) |i| {
+        v[i] = std.ascii.isAlphanumeric(i);
+    }
+    for ("!#$%&\\*+-.^'_`|~") |b| {
+        v[b] = true;
+    }
+    break :blk v;
+};
+
+fn validType(value: []const u8) bool {
+    for (value) |b| {
+        if (VALID_CODEPOINTS[b] == false) {
+            return false;
+        }
+    }
+    return true;
+}
+
+fn trimLeft(s: []const u8) []const u8 {
+    return std.mem.trimLeft(u8, s, &std.ascii.whitespace);
+}
+
+fn trimRight(s: []const u8) []const u8 {
+    return std.mem.trimRight(u8, s, &std.ascii.whitespace);
+}
+
+const testing = @import("../testing.zig");
+test "Mime: invalid" {
+    defer testing.reset();
+
+    const invalids = [_][]const u8{
+        "",
+        "text",
+        "text /html",
+        "text/ html",
+        "text / html",
+        "text/html other",
+    };
+
+    for (invalids) |invalid| {
+        const mutable_input = try testing.arena_allocator.dupe(u8, invalid);
+        try testing.expectError(error.Invalid, Mime.parse(mutable_input));
+    }
+}
+
+test "Mime: malformed parameters are ignored" {
+    defer testing.reset();
+
+    // These should all parse successfully as text/html with malformed params ignored
+    const valid_with_malformed_params = [_][]const u8{
+        "text/html; x",
+        "text/html; x=",
+        "text/html; x=  ",
+        "text/html; = ",
+        "text/html;=",
+        "text/html; charset=\"\"",
+        "text/html; charset=\"",
+        "text/html; charset=\"\\",
+        "text/html;\"",
+    };
+
+    for (valid_with_malformed_params) |input| {
+        const mutable_input = try testing.arena_allocator.dupe(u8, input);
+        const mime = try Mime.parse(mutable_input);
+        try testing.expectEqual(.text_html, std.meta.activeTag(mime.content_type));
+    }
+}
+
+test "Mime: parse common" {
+    defer testing.reset();
+
+    try expect(.{ .content_type = .{ .text_xml = {} } }, "text/xml");
+    try expect(.{ .content_type = .{ .text_html = {} } }, "text/html");
+    try expect(.{ .content_type = .{ .text_plain = {} } }, "text/plain");
+
+    try expect(.{ .content_type = .{ .text_xml = {} } }, "text/xml;");
+    try expect(.{ .content_type = .{ .text_html = {} } }, "text/html;");
+    try expect(.{ .content_type = .{ .text_plain = {} } }, "text/plain;");
+
+    try expect(.{ .content_type = .{ .text_xml = {} } }, "  \ttext/xml");
+    try expect(.{ .content_type = .{ .text_html = {} } }, "text/html   ");
+    try expect(.{ .content_type = .{ .text_plain = {} } }, "text/plain \t\t");
+
+    try expect(.{ .content_type = .{ .text_xml = {} } }, "TEXT/xml");
+    try expect(.{ .content_type = .{ .text_html = {} } }, "text/Html");
+    try expect(.{ .content_type = .{ .text_plain = {} } }, "TEXT/PLAIN");
+
+    try expect(.{ .content_type = .{ .text_xml = {} } }, " TeXT/xml");
+    try expect(.{ .content_type = .{ .text_html = {} } }, "teXt/HtML  ;");
+    try expect(.{ .content_type = .{ .text_plain = {} } }, "tExT/PlAiN;");
+
+    try expect(.{ .content_type = .{ .text_javascript = {} } }, "text/javascript");
+    try expect(.{ .content_type = .{ .text_javascript = {} } }, "Application/JavaScript");
+    try expect(.{ .content_type = .{ .text_javascript = {} } }, "application/x-javascript");
+
+    try expect(.{ .content_type = .{ .application_json = {} } }, "application/json");
+    try expect(.{ .content_type = .{ .text_css = {} } }, "text/css");
+
+    try expect(.{ .content_type = .{ .image_jpeg = {} } }, "image/jpeg");
+    try expect(.{ .content_type = .{ .image_png = {} } }, "image/png");
+    try expect(.{ .content_type = .{ .image_gif = {} } }, "image/gif");
+    try expect(.{ .content_type = .{ .image_webp = {} } }, "image/webp");
+}
+
+test "Mime: parse uncommon" {
+    defer testing.reset();
+
+    const text_csv = Expectation{
+        .content_type = .{ .other = .{ .type = "text", .sub_type = "csv" } },
+    };
+    try expect(text_csv, "text/csv");
+    try expect(text_csv, "text/csv;");
+    try expect(text_csv, "  text/csv\t  ");
+    try expect(text_csv, "  text/csv\t  ;");
+
+    try expect(
+        .{ .content_type = .{ .other = .{ .type = "text", .sub_type = "csv" } } },
+        "Text/CSV",
+    );
+}
+
+test "Mime: parse charset" {
+    defer testing.reset();
+
+    try expect(.{
+        .content_type = .{ .text_xml = {} },
+        .charset = "utf-8",
+        .params = "charset=utf-8",
+    }, "text/xml; charset=utf-8");
+
+    try expect(.{
+        .content_type = .{ .text_xml = {} },
+        .charset = "utf-8",
+        .params = "charset=\"utf-8\"",
+    }, "text/xml;charset=\"UTF-8\"");
+
+    try expect(.{
+        .content_type = .{ .text_html = {} },
+        .charset = "iso-8859-1",
+        .params = "charset=\"iso-8859-1\"",
+    }, "text/html; charset=\"iso-8859-1\"");
+
+    try expect(.{
+        .content_type = .{ .text_html = {} },
+        .charset = "iso-8859-1",
+        .params = "charset=\"iso-8859-1\"",
+    }, "text/html; charset=\"ISO-8859-1\"");
+
+    try expect(.{
+        .content_type = .{ .text_xml = {} },
+        .charset = "custom-non-standard-charset-value",
+        .params = "charset=\"custom-non-standard-charset-value\"",
+    }, "text/xml;charset=\"custom-non-standard-charset-value\"");
+
+    try expect(.{
+        .content_type = .{ .text_html = {} },
+        .charset = "UTF-8",
+        .params = "x=\"",
+    }, "text/html;x=\"");
+}
+
+test "Mime: isHTML" {
+    defer testing.reset();
+
+    const assert = struct {
+        fn assert(expected: bool, input: []const u8) !void {
+            const mutable_input = try testing.arena_allocator.dupe(u8, input);
+            var mime = try Mime.parse(mutable_input);
+            try testing.expectEqual(expected, mime.isHTML());
+        }
+    }.assert;
+    try assert(true, "text/html");
+    try assert(true, "text/html;");
+    try assert(true, "text/html; charset=utf-8");
+    try assert(false, "text/htm"); // htm not html
+    try assert(false, "text/plain");
+    try assert(false, "over/9000");
+}
+
+test "Mime: sniff" {
+    try testing.expectEqual(null, Mime.sniff(""));
+    try testing.expectEqual(null, Mime.sniff("<htm"));
+    try testing.expectEqual(null, Mime.sniff("<html!"));
+    try testing.expectEqual(null, Mime.sniff("<a_"));
+    try testing.expectEqual(null, Mime.sniff("<!doctype html"));
+    try testing.expectEqual(null, Mime.sniff("<!doctype  html>"));
+    try testing.expectEqual(null, Mime.sniff("\n  <!doctype  html>"));
+    try testing.expectEqual(null, Mime.sniff("\n \t <font/>"));
+
+    const expectHTML = struct {
+        fn expect(input: []const u8) !void {
+            try testing.expectEqual(.text_html, std.meta.activeTag(Mime.sniff(input).?.content_type));
+        }
+    }.expect;
+
+    try expectHTML("<!doctype html ");
+    try expectHTML("\n  \t    <!DOCTYPE HTML ");
+
+    try expectHTML("<html ");
+    try expectHTML("\n  \t    <HtmL> even more stufff");
+
+    try expectHTML("<script>");
+    try expectHTML("\n  \t    <SCRIpt >alert(document.cookies)</script>");
+
+    try expectHTML("<iframe>");
+    try expectHTML(" \t    <ifRAME >");
+
+    try expectHTML("<h1>");
+    try expectHTML("  <H1>");
+
+    try expectHTML("<div>");
+    try expectHTML("\n\r\r  <DiV>");
+
+    try expectHTML("<font>");
+    try expectHTML("  <fonT>");
+
+    try expectHTML("<table>");
+    try expectHTML("\t\t<TAblE>");
+
+    try expectHTML("<a>");
+    try expectHTML("\n\n<A>");
+
+    try expectHTML("<style>");
+    try expectHTML("    \n\t <STyLE>");
+
+    try expectHTML("<title>");
+    try expectHTML("    \n\t <TITLE>");
+
+    try expectHTML("<b>");
+    try expectHTML("    \n\t <B>");
+
+    try expectHTML("<body>");
+    try expectHTML("    \n\t <BODY>");
+
+    try expectHTML("<br>");
+    try expectHTML("    \n\t <BR>");
+
+    try expectHTML("<p>");
+    try expectHTML("    \n\t <P>");
+
+    try expectHTML("<!-->");
+    try expectHTML("    \n\t <!-->");
+}
+
+const Expectation = struct {
+    content_type: Mime.ContentType,
+    params: []const u8 = "",
+    charset: ?[]const u8 = null,
+};
+
+fn expect(expected: Expectation, input: []const u8) !void {
+    const mutable_input = try testing.arena_allocator.dupe(u8, input);
+
+    const actual = try Mime.parse(mutable_input);
+    try testing.expectEqual(
+        std.meta.activeTag(expected.content_type),
+        std.meta.activeTag(actual.content_type),
+    );
+
+    switch (expected.content_type) {
+        .other => |e| {
+            const a = actual.content_type.other;
+            try testing.expectEqual(e.type, a.type);
+            try testing.expectEqual(e.sub_type, a.sub_type);
+        },
+        else => {}, // already asserted above
+    }
+
+    try testing.expectEqual(expected.params, actual.params);
+
+    if (expected.charset) |ec| {
+        // We remove the null characters for testing purposes here.
+        try testing.expectEqual(ec, actual.charsetString());
+    } else {
+        const m: Mime = .unknown;
+        try testing.expectEqual(m.charsetStringZ(), actual.charsetStringZ());
+    }
+}

src/browser/Session.zig

@@ -0,0 +1,384 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const lp = @import("lightpanda");
+const builtin = @import("builtin");
+
+const log = @import("../log.zig");
+
+const js = @import("js/js.zig");
+const storage = @import("webapi/storage/storage.zig");
+const Navigation = @import("webapi/navigation/Navigation.zig");
+const History = @import("webapi/History.zig");
+
+const Page = @import("Page.zig");
+const Browser = @import("Browser.zig");
+const Notification = @import("../Notification.zig");
+
+const Allocator = std.mem.Allocator;
+const IS_DEBUG = builtin.mode == .Debug;
+
+// Session is like a browser's tab.
+// It owns the js env and the loader for all the pages of the session.
+// You can create successively multiple pages for a session, but you must
+// deinit a page before running another one.
+const Session = @This();
+
+browser: *Browser,
+notification: *Notification,
+
+// Used to create our Inspector and in the BrowserContext.
+arena: Allocator,
+
+cookie_jar: storage.Cookie.Jar,
+storage_shed: storage.Shed,
+
+history: History,
+navigation: Navigation,
+
+page: ?Page,
+
+frame_id_gen: u32,
+
+pub fn init(self: *Session, browser: *Browser, notification: *Notification) !void {
+    const allocator = browser.app.allocator;
+    const arena = try browser.arena_pool.acquire();
+    errdefer browser.arena_pool.release(arena);
+
+    self.* = .{
+        .page = null,
+        .arena = arena,
+        .history = .{},
+        .frame_id_gen = 0,
+        // The prototype (EventTarget) for Navigation is created when a Page is created.
+        .navigation = .{ ._proto = undefined },
+        .storage_shed = .{},
+        .browser = browser,
+        .notification = notification,
+        .cookie_jar = storage.Cookie.Jar.init(allocator),
+    };
+}
+
+pub fn deinit(self: *Session) void {
+    if (self.page != null) {
+        self.removePage();
+    }
+    const browser = self.browser;
+
+    self.cookie_jar.deinit();
+    self.storage_shed.deinit(browser.app.allocator);
+    browser.arena_pool.release(self.arena);
+}
+
+// NOTE: the caller is not the owner of the returned value,
+// the pointer on Page is just returned as a convenience
+pub fn createPage(self: *Session) !*Page {
+    lp.assert(self.page == null, "Session.createPage - page not null", .{});
+
+    self.page = @as(Page, undefined);
+    const page = &self.page.?;
+    try Page.init(page, self.nextFrameId(), self, null);
+
+    // Creates a new NavigationEventTarget for this page.
+    try self.navigation.onNewPage(page);
+
+    if (comptime IS_DEBUG) {
+        log.debug(.browser, "create page", .{});
+    }
+    // start JS env
+    // Inform CDP the main page has been created such that additional context for other Worlds can be created as well
+    self.notification.dispatch(.page_created, page);
+
+    return page;
+}
+
+pub fn removePage(self: *Session) void {
+    // Inform CDP the page is going to be removed, allowing other worlds to remove themselves before the main one
+    self.notification.dispatch(.page_remove, .{});
+    lp.assert(self.page != null, "Session.removePage - page is null", .{});
+
+    self.page.?.deinit();
+    self.page = null;
+
+    self.navigation.onRemovePage();
+
+    if (comptime IS_DEBUG) {
+        log.debug(.browser, "remove page", .{});
+    }
+}
+
+pub fn replacePage(self: *Session) !*Page {
+    if (comptime IS_DEBUG) {
+        log.debug(.browser, "replace page", .{});
+    }
+
+    lp.assert(self.page != null, "Session.replacePage null page", .{});
+
+    var current = self.page.?;
+    const frame_id = current._frame_id;
+    const parent = current.parent;
+    current.deinit();
+
+    self.browser.env.memoryPressureNotification(.moderate);
+
+    self.page = @as(Page, undefined);
+    const page = &self.page.?;
+    try Page.init(page, frame_id, self, parent);
+    return page;
+}
+
+pub fn currentPage(self: *Session) ?*Page {
+    return &(self.page orelse return null);
+}
+
+pub const WaitResult = enum {
+    done,
+    no_page,
+    cdp_socket,
+};
+
+pub fn findPage(self: *Session, frame_id: u32) ?*Page {
+    const page = self.currentPage() orelse return null;
+    return if (page._frame_id == frame_id) page else null;
+}
+
+pub fn wait(self: *Session, wait_ms: u32) WaitResult {
+    var page = &(self.page orelse return .no_page);
+    while (true) {
+        const wait_result = self._wait(page, wait_ms) catch |err| {
+            switch (err) {
+                error.JsError => {}, // already logged (with hopefully more context)
+                else => log.err(.browser, "session wait", .{
+                    .err = err,
+                    .url = page.url,
+                }),
+            }
+            return .done;
+        };
+
+        switch (wait_result) {
+            .done => {
+                if (page._queued_navigation == null) {
+                    return .done;
+                }
+                page = self.processScheduledNavigation(page) catch return .done;
+            },
+            else => |result| return result,
+        }
+    }
+}
+
+fn _wait(self: *Session, page: *Page, wait_ms: u32) !WaitResult {
+    var timer = try std.time.Timer.start();
+    var ms_remaining = wait_ms;
+
+    const browser = self.browser;
+    var http_client = browser.http_client;
+
+    // I'd like the page to know NOTHING about cdp_socket / CDP, but the
+    // fact is that the behavior of wait changes depending on whether or
+    // not we're using CDP.
+    // If we aren't using CDP, as soon as we think there's nothing left
+    // to do, we can exit - we'de done.
+    // But if we are using CDP, we should wait for the whole `wait_ms`
+    // because the http_click.tick() also monitors the CDP socket. And while
+    // we could let CDP poll http (like it does for HTTP requests), the fact
+    // is that we know more about the timing of stuff (e.g. how long to
+    // poll/sleep) in the page.
+    const exit_when_done = http_client.cdp_client == null;
+
+    while (true) {
+        switch (page._parse_state) {
+            .pre, .raw, .text, .image => {
+                // The main page hasn't started/finished navigating.
+                // There's no JS to run, and no reason to run the scheduler.
+                if (http_client.active == 0 and exit_when_done) {
+                    // haven't started navigating, I guess.
+                    return .done;
+                }
+                // Either we have active http connections, or we're in CDP
+                // mode with an extra socket. Either way, we're waiting
+                // for http traffic
+                if (try http_client.tick(@intCast(ms_remaining)) == .cdp_socket) {
+                    // exit_when_done is explicitly set when there isn't
+                    // an extra socket, so it should not be possibl to
+                    // get an cdp_socket message when exit_when_done
+                    // is true.
+                    if (IS_DEBUG) {
+                        std.debug.assert(exit_when_done == false);
+                    }
+
+                    // data on a socket we aren't handling, return to caller
+                    return .cdp_socket;
+                }
+            },
+            .html, .complete => {
+                if (page._queued_navigation != null) {
+                    return .done;
+                }
+
+                // The HTML page was parsed. We now either have JS scripts to
+                // download, or scheduled tasks to execute, or both.
+
+                // scheduler.run could trigger new http transfers, so do not
+                // store http_client.active BEFORE this call and then use
+                // it AFTER.
+                const ms_to_next_task = try browser.runMacrotasks();
+
+                // Each call to this runs scheduled load events.
+                try page.dispatchLoad();
+
+                const http_active = http_client.active;
+                const total_network_activity = http_active + http_client.intercepted;
+                if (page._notified_network_almost_idle.check(total_network_activity <= 2)) {
+                    page.notifyNetworkAlmostIdle();
+                }
+                if (page._notified_network_idle.check(total_network_activity == 0)) {
+                    page.notifyNetworkIdle();
+                }
+
+                if (http_active == 0 and exit_when_done) {
+                    // we don't need to consider http_client.intercepted here
+                    // because exit_when_done is true, and that can only be
+                    // the case when interception isn't possible.
+                    if (comptime IS_DEBUG) {
+                        std.debug.assert(http_client.intercepted == 0);
+                    }
+
+                    const ms: u64 = ms_to_next_task orelse blk: {
+                        if (wait_ms - ms_remaining < 100) {
+                            if (comptime builtin.is_test) {
+                                return .done;
+                            }
+                            // Look, we want to exit ASAP, but we don't want
+                            // to exit so fast that we've run none of the
+                            // background jobs.
+                            break :blk 50;
+                        }
+
+                        if (browser.hasBackgroundTasks()) {
+                            // _we_ have nothing to run, but v8 is working on
+                            // background tasks. We'll wait for them.
+                            browser.waitForBackgroundTasks();
+                            break :blk 20;
+                        }
+
+                        // No http transfers, no cdp extra socket, no
+                        // scheduled tasks, we're done.
+                        return .done;
+                    };
+
+                    if (ms > ms_remaining) {
+                        // Same as above, except we have a scheduled task,
+                        // it just happens to be too far into the future
+                        // compared to how long we were told to wait.
+                        return .done;
+                    }
+
+                    // We have a task to run in the not-so-distant future.
+                    // You might think we can just sleep until that task is
+                    // ready, but we should continue to run lowPriority tasks
+                    // in the meantime, and that could unblock things. So
+                    // we'll just sleep for a bit, and then restart our wait
+                    // loop to see if anything new can be processed.
+                    std.Thread.sleep(std.time.ns_per_ms * @as(u64, @intCast(@min(ms, 20))));
+                } else {
+                    // We're here because we either have active HTTP
+                    // connections, or exit_when_done == false (aka, there's
+                    // an cdp_socket registered with the http client).
+                    // We should continue to run lowPriority tasks, so we
+                    // minimize how long we'll poll for network I/O.
+                    var ms_to_wait = @min(200, ms_to_next_task orelse 200);
+                    if (ms_to_wait > 10 and browser.hasBackgroundTasks()) {
+                        // if we have background tasks, we don't want to wait too
+                        // long for a message from the client. We want to go back
+                        // to the top of the loop and run macrotasks.
+                        ms_to_wait = 10;
+                    }
+                    if (try http_client.tick(@min(ms_remaining, ms_to_wait)) == .cdp_socket) {
+                        // data on a socket we aren't handling, return to caller
+                        return .cdp_socket;
+                    }
+                }
+            },
+            .err => |err| {
+                page._parse_state = .{ .raw_done = @errorName(err) };
+                return err;
+            },
+            .raw_done => {
+                if (exit_when_done) {
+                    return .done;
+                }
+                // we _could_ http_client.tick(ms_to_wait), but this has
+                // the same result, and I feel is more correct.
+                return .no_page;
+            },
+        }
+
+        const ms_elapsed = timer.lap() / 1_000_000;
+        if (ms_elapsed >= ms_remaining) {
+            return .done;
+        }
+        ms_remaining -= @intCast(ms_elapsed);
+    }
+}
+
+fn processScheduledNavigation(self: *Session, current_page: *Page) !*Page {
+    const browser = self.browser;
+
+    const qn = current_page._queued_navigation.?;
+    // take ownership of the page's queued navigation
+    current_page._queued_navigation = null;
+    defer browser.arena_pool.release(qn.arena);
+
+    const frame_id, const parent = blk: {
+        const page = &self.page.?;
+        const frame_id = page._frame_id;
+        const parent = page.parent;
+
+        browser.http_client.abort();
+        self.removePage();
+
+        break :blk .{ frame_id, parent };
+    };
+
+    self.page = @as(Page, undefined);
+    const page = &self.page.?;
+    try Page.init(page, frame_id, self, parent);
+
+    // Creates a new NavigationEventTarget for this page.
+    try self.navigation.onNewPage(page);
+
+    // start JS env
+    // Inform CDP the main page has been created such that additional context for other Worlds can be created as well
+    self.notification.dispatch(.page_created, page);
+
+    page.navigate(qn.url, qn.opts) catch |err| {
+        log.err(.browser, "queued navigation error", .{ .err = err, .url = qn.url });
+        return err;
+    };
+
+    return page;
+}
+
+pub fn nextFrameId(self: *Session) u32 {
+    const id = self.frame_id_gen +% 1;
+    self.frame_id_gen = id;
+    return id;
+}

src/browser/State.zig

@@ -1,65 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-// Sometimes we need to extend libdom. For example, its HTMLDocument doesn't
-// have a readyState. We have a couple different options, such as making the
-// correction in libdom directly. Another option stems from the fact that every
-// libdom node has an opaque embedder_data field. This is the struct that we
-// lazily load into that field.
-//
-// It didn't originally start off as a collection of every single extension, but
-// this quickly proved necessary, since different fields are needed on the same
-// data at different levels of the prototype chain. This isn't memory efficient.
-
-const Env = @import("env.zig").Env;
-const parser = @import("netsurf.zig");
-const CSSStyleDeclaration = @import("cssom/css_style_declaration.zig").CSSStyleDeclaration;
-
-// for HTMLScript (but probably needs to be added to more)
-onload: ?Env.Function = null,
-onerror: ?Env.Function = null,
-
-// for HTMLElement
-style: CSSStyleDeclaration = .empty,
-
-// for html/document
-ready_state: ReadyState = .loading,
-
-// for dom/document
-active_element: ?*parser.Element = null,
-
-// for HTMLSelectElement
-// By default, if no option is explicitly selected, the first option should
-// be selected. However, libdom doesn't do this, and it sets the
-// selectedIndex to -1, which is a valid value for "nothing selected".
-// Therefore, when libdom says the selectedIndex == -1, we don't know if
-// it means that nothing is selected, or if the first option is selected by
-// default.
-// There are cases where this won't work, but when selectedIndex is
-// explicitly set, we set this boolean flag. Then, when we're getting then
-// selectedIndex, if this flag is == false, which is to say that if
-// selectedIndex hasn't been explicitly set AND if we have at least 1 option
-// AND if it isn't a multi select, we can make the 1st item selected by
-// default (by returning selectedIndex == 0).
-explicit_index_set: bool = false,
-
-const ReadyState = enum {
-    loading,
-    interactive,
-    complete,
-};

src/browser/browser.zig

@@ -1,111 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const Allocator = std.mem.Allocator;
-const ArenaAllocator = std.heap.ArenaAllocator;
-
-const State = @import("State.zig");
-const Env = @import("env.zig").Env;
-const App = @import("../app.zig").App;
-const Session = @import("session.zig").Session;
-const Notification = @import("../notification.zig").Notification;
-
-const http = @import("../http/client.zig");
-
-// Browser is an instance of the browser.
-// You can create multiple browser instances.
-// A browser contains only one session.
-pub const Browser = struct {
-    env: *Env,
-    app: *App,
-    session: ?Session,
-    allocator: Allocator,
-    http_client: *http.Client,
-    page_arena: ArenaAllocator,
-    session_arena: ArenaAllocator,
-    transfer_arena: ArenaAllocator,
-    notification: *Notification,
-    state_pool: std.heap.MemoryPool(State),
-
-    pub fn init(app: *App) !Browser {
-        const allocator = app.allocator;
-
-        const env = try Env.init(allocator, .{});
-        errdefer env.deinit();
-
-        const notification = try Notification.init(allocator, app.notification);
-        errdefer notification.deinit();
-
-        return .{
-            .app = app,
-            .env = env,
-            .session = null,
-            .allocator = allocator,
-            .notification = notification,
-            .http_client = &app.http_client,
-            .page_arena = ArenaAllocator.init(allocator),
-            .session_arena = ArenaAllocator.init(allocator),
-            .transfer_arena = ArenaAllocator.init(allocator),
-            .state_pool = std.heap.MemoryPool(State).init(allocator),
-        };
-    }
-
-    pub fn deinit(self: *Browser) void {
-        self.closeSession();
-        self.env.deinit();
-        self.page_arena.deinit();
-        self.session_arena.deinit();
-        self.transfer_arena.deinit();
-        self.notification.deinit();
-        self.state_pool.deinit();
-    }
-
-    pub fn newSession(self: *Browser) !*Session {
-        self.closeSession();
-        self.session = @as(Session, undefined);
-        const session = &self.session.?;
-        try Session.init(session, self);
-        return session;
-    }
-
-    pub fn closeSession(self: *Browser) void {
-        if (self.session) |*session| {
-            session.deinit();
-            self.session = null;
-            _ = self.session_arena.reset(.{ .retain_with_limit = 1 * 1024 * 1024 });
-            self.env.lowMemoryNotification();
-        }
-    }
-
-    pub fn runMicrotasks(self: *const Browser) void {
-        return self.env.runMicrotasks();
-    }
-};
-
-const testing = @import("../testing.zig");
-test "Browser" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    // this will crash if ICU isn't properly configured / ininitialized
-    try runner.testCases(&.{
-        .{ "new Intl.DateTimeFormat()", "[object Intl.DateTimeFormat]" },
-    }, .{});
-}

src/browser/color.zig

@@ -0,0 +1,298 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const Io = std.Io;
+
+pub fn isHexColor(value: []const u8) bool {
+    if (value.len == 0) {
+        return false;
+    }
+
+    if (value[0] != '#') {
+        return false;
+    }
+
+    const hex_part = value[1..];
+    switch (hex_part.len) {
+        3, 4, 6, 8 => for (hex_part) |c| if (!std.ascii.isHex(c)) return false,
+        else => return false,
+    }
+
+    return true;
+}
+
+pub const RGBA = packed struct(u32) {
+    r: u8,
+    g: u8,
+    b: u8,
+    /// Opaque by default.
+    a: u8 = std.math.maxInt(u8),
+
+    pub const Named = struct {
+        // Basic colors (CSS Level 1)
+        pub const black: RGBA = .init(0, 0, 0, 1);
+        pub const silver: RGBA = .init(192, 192, 192, 1);
+        pub const gray: RGBA = .init(128, 128, 128, 1);
+        pub const white: RGBA = .init(255, 255, 255, 1);
+        pub const maroon: RGBA = .init(128, 0, 0, 1);
+        pub const red: RGBA = .init(255, 0, 0, 1);
+        pub const purple: RGBA = .init(128, 0, 128, 1);
+        pub const fuchsia: RGBA = .init(255, 0, 255, 1);
+        pub const green: RGBA = .init(0, 128, 0, 1);
+        pub const lime: RGBA = .init(0, 255, 0, 1);
+        pub const olive: RGBA = .init(128, 128, 0, 1);
+        pub const yellow: RGBA = .init(255, 255, 0, 1);
+        pub const navy: RGBA = .init(0, 0, 128, 1);
+        pub const blue: RGBA = .init(0, 0, 255, 1);
+        pub const teal: RGBA = .init(0, 128, 128, 1);
+        pub const aqua: RGBA = .init(0, 255, 255, 1);
+
+        // Extended colors (CSS Level 2+)
+        pub const aliceblue: RGBA = .init(240, 248, 255, 1);
+        pub const antiquewhite: RGBA = .init(250, 235, 215, 1);
+        pub const aquamarine: RGBA = .init(127, 255, 212, 1);
+        pub const azure: RGBA = .init(240, 255, 255, 1);
+        pub const beige: RGBA = .init(245, 245, 220, 1);
+        pub const bisque: RGBA = .init(255, 228, 196, 1);
+        pub const blanchedalmond: RGBA = .init(255, 235, 205, 1);
+        pub const blueviolet: RGBA = .init(138, 43, 226, 1);
+        pub const brown: RGBA = .init(165, 42, 42, 1);
+        pub const burlywood: RGBA = .init(222, 184, 135, 1);
+        pub const cadetblue: RGBA = .init(95, 158, 160, 1);
+        pub const chartreuse: RGBA = .init(127, 255, 0, 1);
+        pub const chocolate: RGBA = .init(210, 105, 30, 1);
+        pub const coral: RGBA = .init(255, 127, 80, 1);
+        pub const cornflowerblue: RGBA = .init(100, 149, 237, 1);
+        pub const cornsilk: RGBA = .init(255, 248, 220, 1);
+        pub const crimson: RGBA = .init(220, 20, 60, 1);
+        pub const cyan: RGBA = .init(0, 255, 255, 1); // Synonym of aqua
+        pub const darkblue: RGBA = .init(0, 0, 139, 1);
+        pub const darkcyan: RGBA = .init(0, 139, 139, 1);
+        pub const darkgoldenrod: RGBA = .init(184, 134, 11, 1);
+        pub const darkgray: RGBA = .init(169, 169, 169, 1);
+        pub const darkgreen: RGBA = .init(0, 100, 0, 1);
+        pub const darkgrey: RGBA = .init(169, 169, 169, 1); // Synonym of darkgray
+        pub const darkkhaki: RGBA = .init(189, 183, 107, 1);
+        pub const darkmagenta: RGBA = .init(139, 0, 139, 1);
+        pub const darkolivegreen: RGBA = .init(85, 107, 47, 1);
+        pub const darkorange: RGBA = .init(255, 140, 0, 1);
+        pub const darkorchid: RGBA = .init(153, 50, 204, 1);
+        pub const darkred: RGBA = .init(139, 0, 0, 1);
+        pub const darksalmon: RGBA = .init(233, 150, 122, 1);
+        pub const darkseagreen: RGBA = .init(143, 188, 143, 1);
+        pub const darkslateblue: RGBA = .init(72, 61, 139, 1);
+        pub const darkslategray: RGBA = .init(47, 79, 79, 1);
+        pub const darkslategrey: RGBA = .init(47, 79, 79, 1); // Synonym of darkslategray
+        pub const darkturquoise: RGBA = .init(0, 206, 209, 1);
+        pub const darkviolet: RGBA = .init(148, 0, 211, 1);
+        pub const deeppink: RGBA = .init(255, 20, 147, 1);
+        pub const deepskyblue: RGBA = .init(0, 191, 255, 1);
+        pub const dimgray: RGBA = .init(105, 105, 105, 1);
+        pub const dimgrey: RGBA = .init(105, 105, 105, 1); // Synonym of dimgray
+        pub const dodgerblue: RGBA = .init(30, 144, 255, 1);
+        pub const firebrick: RGBA = .init(178, 34, 34, 1);
+        pub const floralwhite: RGBA = .init(255, 250, 240, 1);
+        pub const forestgreen: RGBA = .init(34, 139, 34, 1);
+        pub const gainsboro: RGBA = .init(220, 220, 220, 1);
+        pub const ghostwhite: RGBA = .init(248, 248, 255, 1);
+        pub const gold: RGBA = .init(255, 215, 0, 1);
+        pub const goldenrod: RGBA = .init(218, 165, 32, 1);
+        pub const greenyellow: RGBA = .init(173, 255, 47, 1);
+        pub const grey: RGBA = .init(128, 128, 128, 1); // Synonym of gray
+        pub const honeydew: RGBA = .init(240, 255, 240, 1);
+        pub const hotpink: RGBA = .init(255, 105, 180, 1);
+        pub const indianred: RGBA = .init(205, 92, 92, 1);
+        pub const indigo: RGBA = .init(75, 0, 130, 1);
+        pub const ivory: RGBA = .init(255, 255, 240, 1);
+        pub const khaki: RGBA = .init(240, 230, 140, 1);
+        pub const lavender: RGBA = .init(230, 230, 250, 1);
+        pub const lavenderblush: RGBA = .init(255, 240, 245, 1);
+        pub const lawngreen: RGBA = .init(124, 252, 0, 1);
+        pub const lemonchiffon: RGBA = .init(255, 250, 205, 1);
+        pub const lightblue: RGBA = .init(173, 216, 230, 1);
+        pub const lightcoral: RGBA = .init(240, 128, 128, 1);
+        pub const lightcyan: RGBA = .init(224, 255, 255, 1);
+        pub const lightgoldenrodyellow: RGBA = .init(250, 250, 210, 1);
+        pub const lightgray: RGBA = .init(211, 211, 211, 1);
+        pub const lightgreen: RGBA = .init(144, 238, 144, 1);
+        pub const lightgrey: RGBA = .init(211, 211, 211, 1); // Synonym of lightgray
+        pub const lightpink: RGBA = .init(255, 182, 193, 1);
+        pub const lightsalmon: RGBA = .init(255, 160, 122, 1);
+        pub const lightseagreen: RGBA = .init(32, 178, 170, 1);
+        pub const lightskyblue: RGBA = .init(135, 206, 250, 1);
+        pub const lightslategray: RGBA = .init(119, 136, 153, 1);
+        pub const lightslategrey: RGBA = .init(119, 136, 153, 1); // Synonym of lightslategray
+        pub const lightsteelblue: RGBA = .init(176, 196, 222, 1);
+        pub const lightyellow: RGBA = .init(255, 255, 224, 1);
+        pub const limegreen: RGBA = .init(50, 205, 50, 1);
+        pub const linen: RGBA = .init(250, 240, 230, 1);
+        pub const magenta: RGBA = .init(255, 0, 255, 1); // Synonym of fuchsia
+        pub const mediumaquamarine: RGBA = .init(102, 205, 170, 1);
+        pub const mediumblue: RGBA = .init(0, 0, 205, 1);
+        pub const mediumorchid: RGBA = .init(186, 85, 211, 1);
+        pub const mediumpurple: RGBA = .init(147, 112, 219, 1);
+        pub const mediumseagreen: RGBA = .init(60, 179, 113, 1);
+        pub const mediumslateblue: RGBA = .init(123, 104, 238, 1);
+        pub const mediumspringgreen: RGBA = .init(0, 250, 154, 1);
+        pub const mediumturquoise: RGBA = .init(72, 209, 204, 1);
+        pub const mediumvioletred: RGBA = .init(199, 21, 133, 1);
+        pub const midnightblue: RGBA = .init(25, 25, 112, 1);
+        pub const mintcream: RGBA = .init(245, 255, 250, 1);
+        pub const mistyrose: RGBA = .init(255, 228, 225, 1);
+        pub const moccasin: RGBA = .init(255, 228, 181, 1);
+        pub const navajowhite: RGBA = .init(255, 222, 173, 1);
+        pub const oldlace: RGBA = .init(253, 245, 230, 1);
+        pub const olivedrab: RGBA = .init(107, 142, 35, 1);
+        pub const orange: RGBA = .init(255, 165, 0, 1);
+        pub const orangered: RGBA = .init(255, 69, 0, 1);
+        pub const orchid: RGBA = .init(218, 112, 214, 1);
+        pub const palegoldenrod: RGBA = .init(238, 232, 170, 1);
+        pub const palegreen: RGBA = .init(152, 251, 152, 1);
+        pub const paleturquoise: RGBA = .init(175, 238, 238, 1);
+        pub const palevioletred: RGBA = .init(219, 112, 147, 1);
+        pub const papayawhip: RGBA = .init(255, 239, 213, 1);
+        pub const peachpuff: RGBA = .init(255, 218, 185, 1);
+        pub const peru: RGBA = .init(205, 133, 63, 1);
+        pub const pink: RGBA = .init(255, 192, 203, 1);
+        pub const plum: RGBA = .init(221, 160, 221, 1);
+        pub const powderblue: RGBA = .init(176, 224, 230, 1);
+        pub const rebeccapurple: RGBA = .init(102, 51, 153, 1);
+        pub const rosybrown: RGBA = .init(188, 143, 143, 1);
+        pub const royalblue: RGBA = .init(65, 105, 225, 1);
+        pub const saddlebrown: RGBA = .init(139, 69, 19, 1);
+        pub const salmon: RGBA = .init(250, 128, 114, 1);
+        pub const sandybrown: RGBA = .init(244, 164, 96, 1);
+        pub const seagreen: RGBA = .init(46, 139, 87, 1);
+        pub const seashell: RGBA = .init(255, 245, 238, 1);
+        pub const sienna: RGBA = .init(160, 82, 45, 1);
+        pub const skyblue: RGBA = .init(135, 206, 235, 1);
+        pub const slateblue: RGBA = .init(106, 90, 205, 1);
+        pub const slategray: RGBA = .init(112, 128, 144, 1);
+        pub const slategrey: RGBA = .init(112, 128, 144, 1); // Synonym of slategray
+        pub const snow: RGBA = .init(255, 250, 250, 1);
+        pub const springgreen: RGBA = .init(0, 255, 127, 1);
+        pub const steelblue: RGBA = .init(70, 130, 180, 1);
+        pub const tan: RGBA = .init(210, 180, 140, 1);
+        pub const thistle: RGBA = .init(216, 191, 216, 1);
+        pub const tomato: RGBA = .init(255, 99, 71, 1);
+        pub const transparent: RGBA = .init(0, 0, 0, 0);
+        pub const turquoise: RGBA = .init(64, 224, 208, 1);
+        pub const violet: RGBA = .init(238, 130, 238, 1);
+        pub const wheat: RGBA = .init(245, 222, 179, 1);
+        pub const whitesmoke: RGBA = .init(245, 245, 245, 1);
+        pub const yellowgreen: RGBA = .init(154, 205, 50, 1);
+    };
+
+    pub fn init(r: u8, g: u8, b: u8, a: f32) RGBA {
+        const clamped = std.math.clamp(a, 0, 1);
+        return .{ .r = r, .g = g, .b = b, .a = @intFromFloat(clamped * 255) };
+    }
+
+    /// Finds a color by its name.
+    pub fn find(name: []const u8) ?RGBA {
+        const match = std.meta.stringToEnum(std.meta.DeclEnum(Named), name) orelse return null;
+
+        return switch (match) {
+            inline else => |comptime_enum| @field(Named, @tagName(comptime_enum)),
+        };
+    }
+
+    /// Parses the given color.
+    /// Currently we only parse hex colors and named colors; other variants
+    /// require CSS evaluation.
+    pub fn parse(input: []const u8) !RGBA {
+        if (!isHexColor(input)) {
+            // Try named colors.
+            return find(input) orelse return error.Invalid;
+        }
+
+        const slice = input[1..];
+        switch (slice.len) {
+            // This means the digit for a color is repeated.
+            // Given HEX is #f0c, its interpreted the same as #FF00CC.
+            3 => {
+                const r = try std.fmt.parseInt(u8, &.{ slice[0], slice[0] }, 16);
+                const g = try std.fmt.parseInt(u8, &.{ slice[1], slice[1] }, 16);
+                const b = try std.fmt.parseInt(u8, &.{ slice[2], slice[2] }, 16);
+                return .{ .r = r, .g = g, .b = b, .a = 255 };
+            },
+            4 => {
+                const r = try std.fmt.parseInt(u8, &.{ slice[0], slice[0] }, 16);
+                const g = try std.fmt.parseInt(u8, &.{ slice[1], slice[1] }, 16);
+                const b = try std.fmt.parseInt(u8, &.{ slice[2], slice[2] }, 16);
+                const a = try std.fmt.parseInt(u8, &.{ slice[3], slice[3] }, 16);
+                return .{ .r = r, .g = g, .b = b, .a = a };
+            },
+            // Regular HEX format.
+            6 => {
+                const r = try std.fmt.parseInt(u8, slice[0..2], 16);
+                const g = try std.fmt.parseInt(u8, slice[2..4], 16);
+                const b = try std.fmt.parseInt(u8, slice[4..6], 16);
+                return .{ .r = r, .g = g, .b = b, .a = 255 };
+            },
+            8 => {
+                const r = try std.fmt.parseInt(u8, slice[0..2], 16);
+                const g = try std.fmt.parseInt(u8, slice[2..4], 16);
+                const b = try std.fmt.parseInt(u8, slice[4..6], 16);
+                const a = try std.fmt.parseInt(u8, slice[6..8], 16);
+                return .{ .r = r, .g = g, .b = b, .a = a };
+            },
+            else => return error.Invalid,
+        }
+    }
+
+    /// By default, browsers prefer lowercase formatting.
+    const format_upper = false;
+
+    /// Formats the `Color` according to web expectations.
+    /// If color is opaque, HEX is preferred; RGBA otherwise.
+    pub fn format(self: *const RGBA, writer: *Io.Writer) Io.Writer.Error!void {
+        if (self.isOpaque()) {
+            // Convert RGB to HEX.
+            // https://gristle.tripod.com/hexconv.html
+            // Hexadecimal characters up to 15.
+            const char: []const u8 = "0123456789" ++ if (format_upper) "ABCDEF" else "abcdef";
+            // This variant always prefers 6 digit format, +1 is for hash char.
+            const buffer = [7]u8{
+                '#',
+                char[self.r >> 4],
+                char[self.r & 15],
+                char[self.g >> 4],
+                char[self.g & 15],
+                char[self.b >> 4],
+                char[self.b & 15],
+            };
+
+            return writer.writeAll(&buffer);
+        }
+
+        // Prefer RGBA format for everything else.
+        return writer.print("rgba({d}, {d}, {d}, {d:.2})", .{ self.r, self.g, self.b, self.normalizedAlpha() });
+    }
+
+    /// Returns true if `Color` is opaque.
+    pub inline fn isOpaque(self: *const RGBA) bool {
+        return self.a == std.math.maxInt(u8);
+    }
+
+    /// Returns the normalized alpha value.
+    pub inline fn normalizedAlpha(self: *const RGBA) f32 {
+        return @as(f32, @floatFromInt(self.a)) / 255;
+    }
+};

src/browser/console/console.zig

@@ -1,329 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const builtin = @import("builtin");
-
-const Allocator = std.mem.Allocator;
-const Page = @import("../page.zig").Page;
-const JsObject = @import("../env.zig").Env.JsObject;
-
-const log = if (builtin.is_test) &test_capture else @import("../../log.zig");
-
-pub const Console = struct {
-    // TODO: configurable writer
-    timers: std.StringHashMapUnmanaged(u32) = .{},
-    counts: std.StringHashMapUnmanaged(u32) = .{},
-
-    pub fn static_lp(values: []JsObject, page: *Page) !void {
-        if (values.len == 0) {
-            return;
-        }
-        log.fatal(.console, "lightpanda", .{ .args = try serializeValues(values, page) });
-    }
-
-    pub fn static_log(values: []JsObject, page: *Page) !void {
-        if (values.len == 0) {
-            return;
-        }
-        log.info(.console, "info", .{ .args = try serializeValues(values, page) });
-    }
-
-    pub fn static_info(values: []JsObject, page: *Page) !void {
-        return static_log(values, page);
-    }
-
-    pub fn static_debug(values: []JsObject, page: *Page) !void {
-        if (values.len == 0) {
-            return;
-        }
-        log.debug(.console, "debug", .{ .args = try serializeValues(values, page) });
-    }
-
-    pub fn static_warn(values: []JsObject, page: *Page) !void {
-        if (values.len == 0) {
-            return;
-        }
-        log.warn(.console, "warn", .{ .args = try serializeValues(values, page) });
-    }
-
-    pub fn static_error(values: []JsObject, page: *Page) !void {
-        if (values.len == 0) {
-            return;
-        }
-
-        log.info(.console, "error", .{
-            .args = try serializeValues(values, page),
-            .stack = page.stackTrace() catch "???",
-        });
-    }
-
-    pub fn static_clear() void {}
-
-    pub fn _count(self: *Console, label_: ?[]const u8, page: *Page) !void {
-        const label = label_ orelse "default";
-        const gop = try self.counts.getOrPut(page.arena, label);
-
-        var current: u32 = 0;
-        if (gop.found_existing) {
-            current = gop.value_ptr.*;
-        } else {
-            gop.key_ptr.* = try page.arena.dupe(u8, label);
-        }
-
-        const count = current + 1;
-        gop.value_ptr.* = count;
-
-        log.info(.console, "count", .{ .label = label, .count = count });
-    }
-
-    pub fn _countReset(self: *Console, label_: ?[]const u8) !void {
-        const label = label_ orelse "default";
-        const kv = self.counts.fetchRemove(label) orelse {
-            log.info(.console, "invalid counter", .{ .label = label });
-            return;
-        };
-        log.info(.console, "count reset", .{ .label = label, .count = kv.value });
-    }
-
-    pub fn _time(self: *Console, label_: ?[]const u8, page: *Page) !void {
-        const label = label_ orelse "default";
-        const gop = try self.timers.getOrPut(page.arena, label);
-
-        if (gop.found_existing) {
-            log.info(.console, "duplicate timer", .{ .label = label });
-            return;
-        }
-        gop.key_ptr.* = try page.arena.dupe(u8, label);
-        gop.value_ptr.* = timestamp();
-    }
-
-    pub fn _timeLog(self: *Console, label_: ?[]const u8) void {
-        const elapsed = timestamp();
-        const label = label_ orelse "default";
-        const start = self.timers.get(label) orelse {
-            log.info(.console, "invalid timer", .{ .label = label });
-            return;
-        };
-        log.info(.console, "timer", .{ .label = label, .elapsed = elapsed - start });
-    }
-
-    pub fn _timeStop(self: *Console, label_: ?[]const u8) void {
-        const elapsed = timestamp();
-        const label = label_ orelse "default";
-        const kv = self.timers.fetchRemove(label) orelse {
-            log.info(.console, "invalid timer", .{ .label = label });
-            return;
-        };
-
-        log.warn(.console, "timer stop", .{ .label = label, .elapsed = elapsed - kv.value });
-    }
-
-    pub fn static_assert(assertion: JsObject, values: []JsObject, page: *Page) !void {
-        if (assertion.isTruthy()) {
-            return;
-        }
-        var serialized_values: []const u8 = "";
-        if (values.len > 0) {
-            serialized_values = try serializeValues(values, page);
-        }
-        log.info(.console, "assertion failed", .{ .values = serialized_values });
-    }
-
-    fn serializeValues(values: []JsObject, page: *Page) ![]const u8 {
-        if (values.len == 0) {
-            return "";
-        }
-
-        const arena = page.call_arena;
-        const separator = log.separator();
-        var arr: std.ArrayListUnmanaged(u8) = .{};
-
-        for (values, 1..) |value, i| {
-            try arr.appendSlice(arena, separator);
-            try arr.writer(arena).print("{d}: ", .{i});
-            const serialized = if (builtin.mode == .Debug) value.toDetailString() else value.toString();
-            try arr.appendSlice(arena, try serialized);
-        }
-        return arr.items;
-    }
-};
-
-fn timestamp() u32 {
-    const ts = std.posix.clock_gettime(std.posix.CLOCK.MONOTONIC) catch unreachable;
-    return @intCast(ts.sec);
-}
-
-var test_capture = TestCapture{};
-const testing = @import("../../testing.zig");
-test "Browser.Console" {
-    defer testing.reset();
-
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    {
-        try runner.testCases(&.{
-            .{ "console.log('a')", "undefined" },
-            .{ "console.warn('hello world', 23, true, new Object())", "undefined" },
-        }, .{});
-
-        const captured = test_capture.captured.items;
-        try testing.expectEqual("[info] args= 1: a", captured[0]);
-        try testing.expectEqual("[warn] args= 1: hello world 2: 23 3: true 4: #<Object>", captured[1]);
-    }
-
-    {
-        test_capture.reset();
-        try runner.testCases(&.{
-            .{ "console.countReset()", "undefined" },
-            .{ "console.count()", "undefined" },
-            .{ "console.count('teg')", "undefined" },
-            .{ "console.count('teg')", "undefined" },
-            .{ "console.count('teg')", "undefined" },
-            .{ "console.count()", "undefined" },
-            .{ "console.countReset('teg')", "undefined" },
-            .{ "console.countReset()", "undefined" },
-            .{ "console.count()", "undefined" },
-        }, .{});
-
-        const captured = test_capture.captured.items;
-        try testing.expectEqual("[invalid counter] label=default", captured[0]);
-        try testing.expectEqual("[count] label=default count=1", captured[1]);
-        try testing.expectEqual("[count] label=teg count=1", captured[2]);
-        try testing.expectEqual("[count] label=teg count=2", captured[3]);
-        try testing.expectEqual("[count] label=teg count=3", captured[4]);
-        try testing.expectEqual("[count] label=default count=2", captured[5]);
-        try testing.expectEqual("[count reset] label=teg count=3", captured[6]);
-        try testing.expectEqual("[count reset] label=default count=2", captured[7]);
-        try testing.expectEqual("[count] label=default count=1", captured[8]);
-    }
-
-    {
-        test_capture.reset();
-        try runner.testCases(&.{
-            .{ "console.assert(true)", "undefined" },
-            .{ "console.assert('a', 2, 3, 4)", "undefined" },
-            .{ "console.assert('')", "undefined" },
-            .{ "console.assert('', 'x', true)", "undefined" },
-            .{ "console.assert(false, 'x')", "undefined" },
-        }, .{});
-
-        const captured = test_capture.captured.items;
-        try testing.expectEqual("[assertion failed] values=", captured[0]);
-        try testing.expectEqual("[assertion failed] values= 1: x 2: true", captured[1]);
-        try testing.expectEqual("[assertion failed] values= 1: x", captured[2]);
-    }
-
-    {
-        test_capture.reset();
-        try runner.testCases(&.{
-            .{ "[1].forEach(console.log)", null },
-        }, .{});
-
-        const captured = test_capture.captured.items;
-        try testing.expectEqual("[info] args= 1: 1 2: 0 3: [1]", captured[0]);
-    }
-}
-
-const TestCapture = struct {
-    captured: std.ArrayListUnmanaged([]const u8) = .{},
-
-    fn separator(_: *const TestCapture) []const u8 {
-        return " ";
-    }
-
-    fn reset(self: *TestCapture) void {
-        self.captured = .{};
-    }
-
-    fn debug(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) void {
-        self.capture(scope, msg, args);
-    }
-
-    fn info(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) void {
-        self.capture(scope, msg, args);
-    }
-
-    fn warn(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) void {
-        self.capture(scope, msg, args);
-    }
-
-    fn err(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) void {
-        self.capture(scope, msg, args);
-    }
-
-    fn fatal(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) void {
-        self.capture(scope, msg, args);
-    }
-
-    fn capture(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) void {
-        self._capture(scope, msg, args) catch unreachable;
-    }
-
-    fn _capture(
-        self: *TestCapture,
-        comptime scope: @Type(.enum_literal),
-        comptime msg: []const u8,
-        args: anytype,
-    ) !void {
-        std.debug.assert(scope == .console);
-
-        const allocator = testing.arena_allocator;
-        var buf: std.ArrayListUnmanaged(u8) = .empty;
-        try buf.appendSlice(allocator, "[" ++ msg ++ "] ");
-
-        inline for (@typeInfo(@TypeOf(args)).@"struct".fields) |f| {
-            try buf.appendSlice(allocator, f.name);
-            try buf.append(allocator, '=');
-            try @import("../../log.zig").writeValue(.pretty, @field(args, f.name), buf.writer(allocator));
-            try buf.append(allocator, ' ');
-        }
-        self.captured.append(testing.arena_allocator, std.mem.trimRight(u8, buf.items, " ")) catch unreachable;
-    }
-};

src/browser/crypto/crypto.zig

@@ -1,82 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const uuidv4 = @import("../../id.zig").uuidv4;
-
-// https://w3c.github.io/webcrypto/#crypto-interface
-pub const Crypto = struct {
-    pub fn _getRandomValues(_: *const Crypto, into: RandomValues) !void {
-        const buf = into.asBuffer();
-        if (buf.len > 65_536) {
-            return error.QuotaExceededError;
-        }
-        std.crypto.random.bytes(buf);
-    }
-
-    pub fn _randomUUID(_: *const Crypto) [36]u8 {
-        var hex: [36]u8 = undefined;
-        uuidv4(&hex);
-        return hex;
-    }
-};
-
-const RandomValues = union(enum) {
-    int8: []i8,
-    uint8: []u8,
-    int16: []i16,
-    uint16: []u16,
-    int32: []i32,
-    uint32: []u32,
-    int64: []i64,
-    uint64: []u64,
-
-    fn asBuffer(self: RandomValues) []u8 {
-        switch (self) {
-            .int8 => |b| return (@as([]u8, @ptrCast(b)))[0..b.len],
-            .uint8 => |b| return (@as([]u8, @ptrCast(b)))[0..b.len],
-            .int16 => |b| return (@as([]u8, @ptrCast(b)))[0 .. b.len * 2],
-            .uint16 => |b| return (@as([]u8, @ptrCast(b)))[0 .. b.len * 2],
-            .int32 => |b| return (@as([]u8, @ptrCast(b)))[0 .. b.len * 4],
-            .uint32 => |b| return (@as([]u8, @ptrCast(b)))[0 .. b.len * 4],
-            .int64 => |b| return (@as([]u8, @ptrCast(b)))[0 .. b.len * 8],
-            .uint64 => |b| return (@as([]u8, @ptrCast(b)))[0 .. b.len * 8],
-        }
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.Crypto" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "const a = crypto.randomUUID();", "undefined" },
-        .{ "const b = crypto.randomUUID();", "undefined" },
-        .{ "a.length;", "36" },
-        .{ "a.length;", "36" },
-        .{ "a == b;", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "try { crypto.getRandomValues(new BigUint64Array(8193)) } catch(e) { e.message == 'QuotaExceededError' }", "true" },
-        .{ "let r1 = new Int32Array(5)", "undefined" },
-        .{ "crypto.getRandomValues(r1)", "undefined" },
-        .{ "new Set(r1).size", "5" },
-    }, .{});
-}

src/browser/css/Parser.zig

@@ -0,0 +1,295 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const Tokenizer = @import("Tokenizer.zig");
+
+pub const Declaration = struct {
+    name: []const u8,
+    value: []const u8,
+    important: bool,
+};
+
+const TokenSpan = struct {
+    token: Tokenizer.Token,
+    start: usize,
+    end: usize,
+};
+
+const TokenStream = struct {
+    tokenizer: Tokenizer,
+    peeked: ?TokenSpan = null,
+
+    fn init(input: []const u8) TokenStream {
+        return .{ .tokenizer = .{ .input = input } };
+    }
+
+    fn nextRaw(self: *TokenStream) ?TokenSpan {
+        const start = self.tokenizer.position;
+        const token = self.tokenizer.next() orelse return null;
+        const end = self.tokenizer.position;
+        return .{ .token = token, .start = start, .end = end };
+    }
+
+    fn next(self: *TokenStream) ?TokenSpan {
+        if (self.peeked) |token| {
+            self.peeked = null;
+            return token;
+        }
+        return self.nextRaw();
+    }
+
+    fn peek(self: *TokenStream) ?TokenSpan {
+        if (self.peeked == null) {
+            self.peeked = self.nextRaw();
+        }
+        return self.peeked;
+    }
+};
+
+pub fn parseDeclarationsList(input: []const u8) DeclarationsIterator {
+    return DeclarationsIterator.init(input);
+}
+
+pub const DeclarationsIterator = struct {
+    input: []const u8,
+    stream: TokenStream,
+
+    pub fn init(input: []const u8) DeclarationsIterator {
+        return .{
+            .input = input,
+            .stream = TokenStream.init(input),
+        };
+    }
+
+    pub fn next(self: *DeclarationsIterator) ?Declaration {
+        while (true) {
+            self.skipTriviaAndSemicolons();
+            const peeked = self.stream.peek() orelse return null;
+
+            switch (peeked.token) {
+                .at_keyword => {
+                    _ = self.stream.next();
+                    self.skipAtRule();
+                },
+                .ident => |name| {
+                    _ = self.stream.next();
+                    if (self.consumeDeclaration(name)) |declaration| {
+                        return declaration;
+                    }
+                },
+                else => {
+                    _ = self.stream.next();
+                    self.skipInvalidDeclaration();
+                },
+            }
+        }
+
+        return null;
+    }
+
+    fn consumeDeclaration(self: *DeclarationsIterator, name: []const u8) ?Declaration {
+        self.skipTrivia();
+
+        const colon = self.stream.next() orelse return null;
+        if (!isColon(colon.token)) {
+            self.skipInvalidDeclaration();
+            return null;
+        }
+
+        const value = self.consumeValue() orelse return null;
+        return .{
+            .name = name,
+            .value = value.value,
+            .important = value.important,
+        };
+    }
+
+    const ValueResult = struct {
+        value: []const u8,
+        important: bool,
+    };
+
+    fn consumeValue(self: *DeclarationsIterator) ?ValueResult {
+        self.skipTrivia();
+
+        var depth: usize = 0;
+        var start: ?usize = null;
+        var last_sig: ?TokenSpan = null;
+        var prev_sig: ?TokenSpan = null;
+
+        while (true) {
+            const peeked = self.stream.peek() orelse break;
+            if (isSemicolon(peeked.token) and depth == 0) {
+                _ = self.stream.next();
+                break;
+            }
+
+            const span = self.stream.next() orelse break;
+            if (isWhitespaceOrComment(span.token)) {
+                continue;
+            }
+
+            if (start == null) start = span.start;
+            prev_sig = last_sig;
+            last_sig = span;
+            updateDepth(span.token, &depth);
+        }
+
+        const value_start = start orelse return null;
+        const last = last_sig orelse return null;
+
+        var important = false;
+        var end_pos = last.end;
+
+        if (isImportantPair(prev_sig, last)) {
+            important = true;
+            const bang = prev_sig orelse return null;
+            if (value_start >= bang.start) return null;
+            end_pos = bang.start;
+        }
+
+        var value_slice = self.input[value_start..end_pos];
+        value_slice = std.mem.trim(u8, value_slice, &std.ascii.whitespace);
+        if (value_slice.len == 0) return null;
+
+        return .{ .value = value_slice, .important = important };
+    }
+
+    fn skipTrivia(self: *DeclarationsIterator) void {
+        while (self.stream.peek()) |peeked| {
+            if (!isWhitespaceOrComment(peeked.token)) break;
+            _ = self.stream.next();
+        }
+    }
+
+    fn skipTriviaAndSemicolons(self: *DeclarationsIterator) void {
+        while (self.stream.peek()) |peeked| {
+            if (isWhitespaceOrComment(peeked.token) or isSemicolon(peeked.token)) {
+                _ = self.stream.next();
+            } else {
+                break;
+            }
+        }
+    }
+
+    fn skipAtRule(self: *DeclarationsIterator) void {
+        var depth: usize = 0;
+        var saw_block = false;
+
+        while (true) {
+            const peeked = self.stream.peek() orelse return;
+            if (!saw_block and isSemicolon(peeked.token) and depth == 0) {
+                _ = self.stream.next();
+                return;
+            }
+
+            const span = self.stream.next() orelse return;
+            if (isWhitespaceOrComment(span.token)) continue;
+
+            if (isBlockStart(span.token)) {
+                depth += 1;
+                saw_block = true;
+            } else if (isBlockEnd(span.token)) {
+                if (depth > 0) depth -= 1;
+                if (saw_block and depth == 0) return;
+            }
+        }
+    }
+
+    fn skipInvalidDeclaration(self: *DeclarationsIterator) void {
+        var depth: usize = 0;
+
+        while (self.stream.peek()) |peeked| {
+            if (isSemicolon(peeked.token) and depth == 0) {
+                _ = self.stream.next();
+                return;
+            }
+
+            const span = self.stream.next() orelse return;
+            if (isWhitespaceOrComment(span.token)) continue;
+            updateDepth(span.token, &depth);
+        }
+    }
+};
+
+fn isWhitespaceOrComment(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .white_space, .comment => true,
+        else => false,
+    };
+}
+
+fn isSemicolon(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .semicolon => true,
+        else => false,
+    };
+}
+
+fn isColon(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .colon => true,
+        else => false,
+    };
+}
+
+fn isBlockStart(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .curly_bracket_block, .square_bracket_block, .parenthesis_block, .function => true,
+        else => false,
+    };
+}
+
+fn isBlockEnd(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .close_curly_bracket, .close_parenthesis, .close_square_bracket => true,
+        else => false,
+    };
+}
+
+fn updateDepth(token: Tokenizer.Token, depth: *usize) void {
+    if (isBlockStart(token)) {
+        depth.* += 1;
+        return;
+    }
+
+    if (isBlockEnd(token)) {
+        if (depth.* > 0) depth.* -= 1;
+    }
+}
+
+fn isImportantPair(prev_sig: ?TokenSpan, last_sig: TokenSpan) bool {
+    if (!isIdentImportant(last_sig.token)) return false;
+    const prev = prev_sig orelse return false;
+    return isBang(prev.token);
+}
+
+fn isIdentImportant(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .ident => |name| std.ascii.eqlIgnoreCase(name, "important"),
+        else => false,
+    };
+}
+
+fn isBang(token: Tokenizer.Token) bool {
+    return switch (token) {
+        .delim => |c| c == '!',
+        else => false,
+    };
+}

src/browser/css/README.md

@@ -1,218 +0,0 @@
-# css
-
-Lightpanda css implements CSS selectors parsing and matching in Zig.
-This package is a port of the Go lib [andybalholm/cascadia](https://github.com/andybalholm/cascadia).
-
-## Usage
-
-### Query parser
-
-```zig
-const css = @import("css.zig");
-
-const selector = try css.parse(alloc, "h1", .{});
-defer selector.deinit(alloc);
-```
-
-### DOM tree match
-
-The lib expects a `Node` interface implementation to match your DOM tree.
-
-```zig
-pub const Node = struct {
-    pub fn firstChild(_: Node) !?Node {
-        return error.TODO;
-    }
-
-    pub fn lastChild(_: Node) !?Node {
-        return error.TODO;
-    }
-
-    pub fn nextSibling(_: Node) !?Node {
-        return error.TODO;
-    }
-
-    pub fn prevSibling(_: Node) !?Node {
-        return error.TODO;
-    }
-
-    pub fn parent(_: Node) !?Node {
-        return error.TODO;
-    }
-
-    pub fn isElement(_: Node) bool {
-        return false;
-    }
-
-    pub fn isDocument(_: Node) bool {
-        return false;
-    }
-
-    pub fn isComment(_: Node) bool {
-        return false;
-    }
-
-    pub fn isText(_: Node) bool {
-        return false;
-    }
-
-    pub fn isEmptyText(_: Node) !bool {
-        return error.TODO;
-    }
-
-    pub fn tag(_: Node) ![]const u8 {
-        return error.TODO;
-    }
-
-    pub fn attr(_: Node, _: []const u8) !?[]const u8 {
-        return error.TODO;
-    }
-
-    pub fn eql(_: Node, _: Node) bool {
-        return false;
-    }
-};
-```
-
-You also need do define a `Matcher` implementing a `match` function to
-accumulate the results.
-
-```zig
-const Matcher = struct {
-    const Nodes = std.ArrayList(Node);
-
-    nodes: Nodes,
-
-    fn init(alloc: std.mem.Allocator) Matcher {
-        return .{ .nodes = Nodes.init(alloc) };
-    }
-
-    fn deinit(m: *Matcher) void {
-        m.nodes.deinit();
-    }
-
-    pub fn match(m: *Matcher, n: Node) !void {
-        try m.nodes.append(n);
-    }
-};
-```
-
-Then you can use the lib itself.
-
-```zig
-var matcher = Matcher.init(alloc);
-defer matcher.deinit();
-
-try css.matchAll(selector, node, &matcher);
-_ = try css.matchFirst(selector, node, &matcher); // returns true if a node matched.
-```
-
-## Features
-
-* [x] parse query selector
-* [x] `matchAll`
-* [x] `matchFirst`
-* [ ] specificity
-
-### Selectors implemented
-
-#### Selectors
-
-* [x] Class selectors
-* [x] Id selectors
-* [x] Type selectors
-* [x] Universal selectors
-* [ ] Nesting selectors
-
-#### Combinators
-
-* [x] Child combinator
-* [ ] Column combinator
-* [x] Descendant combinator
-* [ ] Namespace combinator
-* [x] Next-sibling combinator
-* [x] Selector list combinator
-* [x] Subsequent-sibling combinator
-
-#### Attribute
-
-* [x] `[attr]`
-* [x] `[attr=value]`
-* [x] `[attr|=value]`
-* [x] `[attr^=value]`
-* [x] `[attr$=value]`
-* [ ] `[attr*=value]`
-* [x] `[attr operator value i]`
-* [ ] `[attr operator value s]`
-
-#### Pseudo classes
-
-* [ ] `:active`
-* [ ] `:any-link`
-* [ ] `:autofill`
-* [ ] `:blank Experimental`
-* [x] `:checked`
-* [ ] `:current Experimental`
-* [ ] `:default`
-* [ ] `:defined`
-* [ ] `:dir() Experimental`
-* [x] `:disabled`
-* [x] `:empty`
-* [x] `:enabled`
-* [ ] `:first`
-* [x] `:first-child`
-* [x] `:first-of-type`
-* [ ] `:focus`
-* [ ] `:focus-visible`
-* [ ] `:focus-within`
-* [ ] `:fullscreen`
-* [ ] `:future Experimental`
-* [x] `:has() Experimental`
-* [ ] `:host`
-* [ ] `:host()`
-* [ ] `:host-context() Experimental`
-* [ ] `:hover`
-* [ ] `:indeterminate`
-* [ ] `:in-range`
-* [ ] `:invalid`
-* [ ] `:is()`
-* [x] `:lang()`
-* [x] `:last-child`
-* [x] `:last-of-type`
-* [ ] `:left`
-* [x] `:link`
-* [ ] `:local-link Experimental`
-* [ ] `:modal`
-* [x] `:not()`
-* [x] `:nth-child()`
-* [x] `:nth-last-child()`
-* [x] `:nth-last-of-type()`
-* [x] `:nth-of-type()`
-* [x] `:only-child`
-* [x] `:only-of-type`
-* [ ] `:optional`
-* [ ] `:out-of-range`
-* [ ] `:past Experimental`
-* [ ] `:paused`
-* [ ] `:picture-in-picture`
-* [ ] `:placeholder-shown`
-* [ ] `:playing`
-* [ ] `:read-only`
-* [ ] `:read-write`
-* [ ] `:required`
-* [ ] `:right`
-* [x] `:root`
-* [ ] `:scope`
-* [ ] `:state() Experimental`
-* [ ] `:target`
-* [ ] `:target-within Experimental`
-* [ ] `:user-invalid Experimental`
-* [ ] `:valid`
-* [ ] `:visited`
-* [ ] `:where()`
-* [ ] `:contains()`
-* [ ] `:containsown()`
-* [ ] `:matched()`
-* [ ] `:matchesown()`
-* [x] `:root`
-

src/browser/css/Tokenizer.zig

@@ -0,0 +1,824 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//! This file implements the tokenization step defined in the CSS Syntax Module Level 3 specification.
+//!
+//! The algorithm accepts a valid UTF-8 string and returns a stream of tokens.
+//! The tokenization step never fails, even for complete gibberish.
+//! Validity must then be checked by the parser.
+//!
+//! NOTE: The tokenizer is not thread-safe and does not own any memory, and does not check the validity of utf8.
+//!
+//! See spec for more info: https://drafts.csswg.org/css-syntax/#tokenization
+
+const std = @import("std");
+const builtin = @import("builtin");
+const assert = std.debug.assert;
+
+const Tokenizer = @This();
+
+pub const Token = union(enum) {
+    /// A `<ident-token>`
+    ident: []const u8,
+
+    /// A `<function-token>`
+    ///
+    /// The value (name) does not include the `(` marker.
+    function: []const u8,
+
+    /// A `<at-keyword-token>`
+    ///
+    /// The value does not include the `@` marker.
+    at_keyword: []const u8,
+
+    /// A `<hash-token>` with the type flag set to "id"
+    ///
+    /// The value does not include the `#` marker.
+    id_hash: []const u8, // Hash that is a valid ID selector.
+
+    /// A `<hash-token>` with the type flag set to "unrestricted"
+    ///
+    /// The value does not include the `#` marker.
+    unrestricted_hash: []const u8,
+
+    /// A `<string-token>`
+    ///
+    /// The value does not include the quotes.
+    string: []const u8,
+
+    /// A `<bad-string-token>`
+    ///
+    /// This token always indicates a parse error.
+    bad_string: []const u8,
+
+    /// A `<url-token>`
+    ///
+    /// The value does not include the `url(` `)` markers.  Note that `url( <string-token> )` is represented by a
+    /// `Function` token.
+    url: []const u8,
+
+    /// A `<bad-url-token>`
+    ///
+    /// This token always indicates a parse error.
+    bad_url: []const u8,
+
+    /// A `<delim-token>`
+    delim: u8,
+
+    /// A `<number-token>`
+    number: struct {
+        /// Whether the number had a `+` or `-` sign.
+        ///
+        /// This is used is some cases like the <An+B> micro syntax. (See the `parse_nth` function.)
+        has_sign: bool,
+
+        /// If the origin source did not include a fractional part, the value as an integer.
+        int_value: ?i32,
+
+        /// The value as a float
+        value: f32,
+    },
+
+    /// A `<percentage-token>`
+    percentage: struct {
+        /// Whether the number had a `+` or `-` sign.
+        has_sign: bool,
+
+        /// If the origin source did not include a fractional part, the value as an integer.
+        /// It is **not** divided by 100.
+        int_value: ?i32,
+
+        /// The value as a float, divided by 100 so that the nominal range is 0.0 to 1.0.
+        unit_value: f32,
+    },
+
+    /// A `<dimension-token>`
+    dimension: struct {
+        /// Whether the number had a `+` or `-` sign.
+        ///
+        /// This is used is some cases like the <An+B> micro syntax. (See the `parse_nth` function.)
+        has_sign: bool,
+
+        /// If the origin source did not include a fractional part, the value as an integer.
+        int_value: ?i32,
+
+        /// The value as a float
+        value: f32,
+
+        /// The unit, e.g. "px" in `12px`
+        unit: []const u8,
+    },
+
+    /// A `<unicode-range-token>`
+    unicode_range: struct { bgn: u32, end: i32 },
+
+    /// A `<whitespace-token>`
+    white_space: []const u8,
+
+    /// A `<!--` `<CDO-token>`
+    cdo,
+
+    /// A `-->` `<CDC-token>`
+    cdc,
+
+    /// A `:` `<colon-token>`
+    colon, // :
+
+    /// A `;` `<semicolon-token>`
+    semicolon, // ;
+
+    /// A `,` `<comma-token>`
+    comma, // ,
+
+    /// A `<[-token>`
+    square_bracket_block,
+
+    /// A `<]-token>`
+    ///
+    /// When obtained from one of the `Parser::next*` methods,
+    /// this token is always unmatched and indicates a parse error.
+    close_square_bracket,
+
+    /// A `<(-token>`
+    parenthesis_block,
+
+    /// A `<)-token>`
+    ///
+    /// When obtained from one of the `Parser::next*` methods,
+    /// this token is always unmatched and indicates a parse error.
+    close_parenthesis,
+
+    /// A `<{-token>`
+    curly_bracket_block,
+
+    /// A `<}-token>`
+    ///
+    /// When obtained from one of the `Parser::next*` methods,
+    /// this token is always unmatched and indicates a parse error.
+    close_curly_bracket,
+
+    /// A comment.
+    ///
+    /// The CSS Syntax spec does not generate tokens for comments,
+    /// But we do for simplicity of the interface.
+    ///
+    /// The value does not include the `/*` `*/` markers.
+    comment: []const u8,
+};
+
+input: []const u8,
+
+/// Counted in bytes, not code points. From 0.
+position: usize = 0,
+
+// If true, the input has at least `n` bytes left *after* the current one.
+// That is, `Lexer.byteAt(n)` will not panic.
+fn hasAtLeast(self: *const Tokenizer, n: usize) bool {
+    return self.position + n < self.input.len;
+}
+
+fn isEof(self: *const Tokenizer) bool {
+    return !self.hasAtLeast(0);
+}
+
+fn byteAt(self: *const Tokenizer, offset: usize) u8 {
+    return self.input[self.position + offset];
+}
+
+// Assumes non-EOF
+fn nextByteUnchecked(self: *const Tokenizer) u8 {
+    return self.byteAt(0);
+}
+
+fn nextByte(self: *const Tokenizer) ?u8 {
+    return if (self.isEof())
+        null
+    else
+        self.input[self.position];
+}
+
+fn startsWith(self: *const Tokenizer, needle: []const u8) bool {
+    return std.mem.startsWith(u8, self.input[self.position..], needle);
+}
+
+fn slice(self: *const Tokenizer, start: usize, end: usize) []const u8 {
+    return self.input[start..end];
+}
+
+fn sliceFrom(self: *const Tokenizer, start_pos: usize) []const u8 {
+    return self.slice(start_pos, self.position);
+}
+
+// Advance over N bytes in the input.  This function can advance
+// over ASCII bytes (excluding newlines), or UTF-8 sequence
+// leaders (excluding leaders for 4-byte sequences).
+fn advance(self: *Tokenizer, n: usize) void {
+    if (builtin.mode == .Debug) {
+        // Each byte must either be an ASCII byte or a sequence leader,
+        // but not a 4-byte leader; also newlines are rejected.
+        for (0..n) |i| {
+            const b = self.byteAt(i);
+            assert(b != '\r' and b != '\n' and b != '\x0C');
+            assert(b <= 0x7F or (b & 0xF0 != 0xF0 and b & 0xC0 != 0x80));
+        }
+    }
+    self.position += n;
+}
+
+fn hasNewlineAt(self: *const Tokenizer, offset: usize) bool {
+    if (!self.hasAtLeast(offset)) return false;
+
+    return switch (self.byteAt(offset)) {
+        '\n', '\r', '\x0C' => true,
+        else => false,
+    };
+}
+
+fn hasNonAsciiAt(self: *const Tokenizer, offset: usize) bool {
+    if (!self.hasAtLeast(offset)) return false;
+
+    const byte = self.byteAt(offset);
+    const len_utf8 = std.unicode.utf8ByteSequenceLength(byte) catch return false;
+
+    if (!self.hasAtLeast(offset + len_utf8 - 1)) return false;
+
+    const start = self.position + offset;
+    const bytes = self.slice(start, start + len_utf8);
+
+    const codepoint = std.unicode.utf8Decode(bytes) catch return false;
+
+    // https://drafts.csswg.org/css-syntax/#non-ascii-ident-code-point
+    return switch (codepoint) {
+        '\u{00B7}', '\u{200C}', '\u{200D}', '\u{203F}', '\u{2040}' => true,
+        '\u{00C0}'...'\u{00D6}' => true,
+        '\u{00D8}'...'\u{00F6}' => true,
+        '\u{00F8}'...'\u{037D}' => true,
+        '\u{037F}'...'\u{1FFF}' => true,
+        '\u{2070}'...'\u{218F}' => true,
+        '\u{2C00}'...'\u{2FEF}' => true,
+        '\u{3001}'...'\u{D7FF}' => true,
+        '\u{F900}'...'\u{FDCF}' => true,
+        '\u{FDF0}'...'\u{FFFD}' => true,
+        else => codepoint >= '\u{10000}',
+    };
+}
+
+fn isIdentStart(self: *Tokenizer) bool {
+    if (self.isEof()) return false;
+
+    var b = self.nextByteUnchecked();
+    if (b == '-') {
+        b = if (self.hasAtLeast(1)) self.byteAt(1) else return false;
+    }
+
+    return switch (b) {
+        'a'...'z', 'A'...'Z', '_', 0x0 => true,
+        '\\' => !self.hasNewlineAt(1),
+        else => b > 0x7F, // not is ascii
+    };
+}
+
+fn consumeChar(self: *Tokenizer) void {
+    const byte = self.nextByteUnchecked();
+    const len_utf8 = std.unicode.utf8ByteSequenceLength(byte) catch 1;
+    self.position += len_utf8;
+}
+
+// Given that a newline has been seen, advance over the newline
+// and update the state.
+fn consumeNewline(self: *Tokenizer) void {
+    const byte = self.nextByteUnchecked();
+    assert(byte == '\r' or byte == '\n' or byte == '\x0C');
+
+    self.position += 1;
+    if (byte == '\r' and self.nextByte() == '\n') {
+        self.position += 1;
+    }
+}
+
+fn consumeWhiteSpace(self: *Tokenizer, newline: bool) Token {
+    const start_position = self.position;
+    if (newline) {
+        self.consumeNewline();
+    } else {
+        self.advance(1);
+    }
+    while (!self.isEof()) {
+        const b = self.nextByteUnchecked();
+        switch (b) {
+            ' ', '\t' => {
+                self.advance(1);
+            },
+            '\n', '\x0C', '\r' => {
+                self.consumeNewline();
+            },
+            else => break,
+        }
+    }
+    return .{ .white_space = self.sliceFrom(start_position) };
+}
+
+fn consumeComment(self: *Tokenizer) []const u8 {
+    self.advance(2); // consume "/*"
+    const start_position = self.position;
+    while (!self.isEof()) {
+        switch (self.nextByteUnchecked()) {
+            '*' => {
+                const end_position = self.position;
+                self.advance(1);
+                if (self.nextByte() == '/') {
+                    self.advance(1);
+                    return self.slice(start_position, end_position);
+                }
+            },
+            '\n', '\x0C', '\r' => {
+                self.consumeNewline();
+            },
+            0x0 => self.advance(1),
+            else => self.consumeChar(),
+        }
+    }
+    return self.sliceFrom(start_position);
+}
+
+fn byteToHexDigit(b: u8) ?u32 {
+    return switch (b) {
+        '0'...'9' => b - '0',
+        'a'...'f' => b - 'a' + 10,
+        'A'...'F' => b - 'A' + 10,
+        else => null,
+    };
+}
+
+fn byteToDecimalDigit(b: u8) ?u32 {
+    return if (std.ascii.isDigit(b)) b - '0' else null;
+}
+
+// (value, number of digits up to 6)
+fn consumeHexDigits(self: *Tokenizer) void {
+    var value: u32 = 0;
+    var digits: u32 = 0;
+
+    while (digits < 6 and !self.isEof()) {
+        if (byteToHexDigit(self.nextByteUnchecked())) |digit| {
+            value = value * 16 + digit;
+            digits += 1;
+            self.advance(1);
+        } else {
+            break;
+        }
+    }
+
+    _ = &value;
+}
+
+// Assumes that the U+005C REVERSE SOLIDUS (\) has already been consumed
+// and that the next input character has already been verified
+// to not be a newline.
+fn consumeEscape(self: *Tokenizer) void {
+    if (self.isEof())
+        return; // Escaped EOF
+
+    switch (self.nextByteUnchecked()) {
+        '0'...'9', 'A'...'F', 'a'...'f' => {
+            consumeHexDigits(self);
+
+            if (!self.isEof()) {
+                switch (self.nextByteUnchecked()) {
+                    ' ', '\t' => {
+                        self.advance(1);
+                    },
+                    '\n', '\x0C', '\r' => {
+                        self.consumeNewline();
+                    },
+                    else => {},
+                }
+            }
+        },
+        else => self.consumeChar(),
+    }
+}
+
+/// https://drafts.csswg.org/css-syntax/#consume-string-token
+fn consumeString(self: *Tokenizer, single_quote: bool) Token {
+    self.advance(1); // Skip the initial quote
+
+    // start_pos is at code point boundary, after " or '
+    const start_pos = self.position;
+
+    while (!self.isEof()) {
+        switch (self.nextByteUnchecked()) {
+            '"' => {
+                if (!single_quote) {
+                    const value = self.sliceFrom(start_pos);
+                    self.advance(1);
+                    return .{ .string = value };
+                }
+                self.advance(1);
+            },
+            '\'' => {
+                if (single_quote) {
+                    const value = self.sliceFrom(start_pos);
+                    self.advance(1);
+                    return .{ .string = value };
+                }
+                self.advance(1);
+            },
+            '\n', '\r', '\x0C' => {
+                return .{ .bad_string = self.sliceFrom(start_pos) };
+            },
+            '\\' => {
+                self.advance(1);
+                if (self.isEof())
+                    continue; // escaped EOF, do nothing.
+
+                switch (self.nextByteUnchecked()) {
+                    // Escaped newline
+                    '\n', '\x0C', '\r' => self.consumeNewline(),
+
+                    // Spec calls for replacing escape sequences with characters,
+                    // but this would require allocating a new string.
+                    // Therefore, we leave it as is and let the parser handle the escaping.
+                    else => self.consumeEscape(),
+                }
+            },
+            else => self.consumeChar(),
+        }
+    }
+
+    return .{ .string = self.sliceFrom(start_pos) };
+}
+
+fn consumeName(self: *Tokenizer) []const u8 {
+    // start_pos is the end of the previous token, therefore at a code point boundary
+    const start_pos = self.position;
+
+    while (!self.isEof()) {
+        switch (self.nextByteUnchecked()) {
+            'a'...'z', 'A'...'Z', '0'...'9', '_', '-' => self.advance(1),
+            '\\' => {
+                if (self.hasNewlineAt(1)) {
+                    break;
+                }
+
+                self.advance(1);
+                self.consumeEscape();
+            },
+            0x0 => self.advance(1),
+            '\x80'...'\xBF', '\xC0'...'\xEF', '\xF0'...'\xFF' => {
+                // This byte *is* part of a multi-byte code point,
+                // we’ll end up copying the whole code point before this loop does something else.
+                self.advance(1);
+            },
+            else => {
+                if (self.hasNonAsciiAt(0)) {
+                    self.consumeChar();
+                } else {
+                    break; // ASCII
+                }
+            },
+        }
+    }
+
+    return self.sliceFrom(start_pos);
+}
+
+fn consumeMark(self: *Tokenizer) Token {
+    const byte = self.nextByteUnchecked();
+    self.advance(1);
+    return switch (byte) {
+        ',' => .comma,
+        ':' => .colon,
+        ';' => .semicolon,
+        '(' => .parenthesis_block,
+        ')' => .close_parenthesis,
+        '{' => .curly_bracket_block,
+        '}' => .close_curly_bracket,
+        '[' => .square_bracket_block,
+        ']' => .close_square_bracket,
+        else => unreachable,
+    };
+}
+
+fn consumeNumeric(self: *Tokenizer) Token {
+    // Parse [+-]?\d*(\.\d+)?([eE][+-]?\d+)?
+    // But this is always called so that there is at least one digit in \d*(\.\d+)?
+
+    // Do all the math in f64 so that large numbers overflow to +/-inf
+    // and i32::{MIN, MAX} are within range.
+
+    var sign: f64 = 1.0;
+    var has_sign = false;
+    switch (self.nextByteUnchecked()) {
+        '+' => {
+            has_sign = true;
+        },
+        '-' => {
+            has_sign = true;
+            sign = -1.0;
+        },
+        else => {},
+    }
+    if (has_sign) {
+        self.advance(1);
+    }
+
+    var is_integer = true;
+    var integral_part: f64 = 0.0;
+    var fractional_part: f64 = 0.0;
+
+    while (!self.isEof()) {
+        if (byteToDecimalDigit(self.nextByteUnchecked())) |digit| {
+            integral_part = integral_part * 10.0 + @as(f64, @floatFromInt(digit));
+            self.advance(1);
+        } else {
+            break;
+        }
+    }
+
+    if (self.hasAtLeast(1) and self.nextByteUnchecked() == '.' and std.ascii.isDigit(self.byteAt(1))) {
+        is_integer = false;
+        self.advance(1); // Consume '.'
+
+        var factor: f64 = 0.1;
+        while (!self.isEof()) {
+            if (byteToDecimalDigit(self.nextByteUnchecked())) |digit| {
+                fractional_part += @as(f64, @floatFromInt(digit)) * factor;
+                factor *= 0.1;
+                self.advance(1);
+            } else {
+                break;
+            }
+        }
+    }
+
+    var value = sign * (integral_part + fractional_part);
+
+    blk: {
+        const e = self.nextByte() orelse break :blk;
+        if (e != 'e' and e != 'E') break :blk;
+
+        var mul: f64 = 1.0;
+
+        if (self.hasAtLeast(2) and (self.byteAt(1) == '+' or self.byteAt(1) == '-') and std.ascii.isDigit(self.byteAt(2))) {
+            mul = switch (self.byteAt(1)) {
+                '-' => -1.0,
+                '+' => 1.0,
+                else => unreachable,
+            };
+
+            self.advance(2);
+        } else if (self.hasAtLeast(2) and std.ascii.isDigit(self.byteAt(2))) {
+            self.advance(1);
+        } else {
+            break :blk;
+        }
+
+        is_integer = false;
+
+        var exponent: f64 = 0.0;
+        while (!self.isEof()) {
+            if (byteToDecimalDigit(self.nextByteUnchecked())) |digit| {
+                exponent = exponent * 10.0 + @as(f64, @floatFromInt(digit));
+                self.advance(1);
+            } else {
+                break;
+            }
+        }
+        value *= std.math.pow(f64, 10.0, mul * exponent);
+    }
+
+    const int_value: ?i32 = if (is_integer) blk: {
+        if (value >= std.math.maxInt(i32)) {
+            break :blk std.math.maxInt(i32);
+        }
+
+        if (value <= std.math.minInt(i32)) {
+            break :blk std.math.minInt(i32);
+        }
+
+        break :blk @as(i32, @intFromFloat(value));
+    } else null;
+
+    if (!self.isEof() and self.nextByteUnchecked() == '%') {
+        self.advance(1);
+
+        return .{ .percentage = .{
+            .has_sign = has_sign,
+            .int_value = int_value,
+            .unit_value = @as(f32, @floatCast(value / 100.0)),
+        } };
+    }
+
+    if (isIdentStart(self)) {
+        return .{ .dimension = .{
+            .has_sign = has_sign,
+            .int_value = int_value,
+            .value = @as(f32, @floatCast(value)),
+            .unit = consumeName(self),
+        } };
+    }
+
+    return .{ .number = .{
+        .has_sign = has_sign,
+        .int_value = int_value,
+        .value = @as(f32, @floatCast(value)),
+    } };
+}
+
+fn consumeUnquotedUrl(self: *Tokenizer) ?Token {
+    // TODO: true url parser
+    if (self.nextByte()) |it| {
+        return self.consumeString(it == '\'');
+    }
+
+    return null;
+}
+
+fn consumeIdentLike(self: *Tokenizer) Token {
+    const value = self.consumeName();
+
+    if (!self.isEof() and self.nextByteUnchecked() == '(') {
+        self.advance(1);
+
+        if (std.ascii.eqlIgnoreCase(value, "url")) {
+            if (self.consumeUnquotedUrl()) |result| {
+                return result;
+            }
+        }
+
+        return .{ .function = value };
+    }
+
+    return .{ .ident = value };
+}
+
+pub fn next(self: *Tokenizer) ?Token {
+    if (self.isEof()) {
+        return null;
+    }
+
+    const b = self.nextByteUnchecked();
+    return switch (b) {
+        // Consume comments
+        '/' => {
+            if (self.startsWith("/*")) {
+                return .{ .comment = self.consumeComment() };
+            } else {
+                self.advance(1);
+                return .{ .delim = '/' };
+            }
+        },
+
+        // Consume marks
+        '(', ')', '{', '}', '[', ']', ',', ':', ';' => {
+            return self.consumeMark();
+        },
+
+        // Consume as much whitespace as possible. Return a <whitespace-token>.
+        ' ', '\t' => self.consumeWhiteSpace(false),
+        '\n', '\x0C', '\r' => self.consumeWhiteSpace(true),
+
+        // Consume a string token and return it.
+        '"' => self.consumeString(false),
+        '\'' => self.consumeString(true),
+
+        '0'...'9' => self.consumeNumeric(),
+        'a'...'z', 'A'...'Z', '_', 0x0 => self.consumeIdentLike(),
+
+        '+' => {
+            if ((self.hasAtLeast(1) and std.ascii.isDigit(self.byteAt(1))) or
+                (self.hasAtLeast(2) and self.byteAt(1) == '.' and std.ascii.isDigit(self.byteAt(2))))
+            {
+                return self.consumeNumeric();
+            }
+            self.advance(1);
+            return .{ .delim = '+' };
+        },
+        '-' => {
+            if ((self.hasAtLeast(1) and std.ascii.isDigit(self.byteAt(1))) or
+                (self.hasAtLeast(2) and self.byteAt(1) == '.' and std.ascii.isDigit(self.byteAt(2))))
+            {
+                return self.consumeNumeric();
+            }
+
+            if (self.startsWith("-->")) {
+                self.advance(3);
+                return .cdc;
+            }
+
+            if (isIdentStart(self)) {
+                return self.consumeIdentLike();
+            }
+
+            self.advance(1);
+            return .{ .delim = '-' };
+        },
+        '.' => {
+            if (self.hasAtLeast(1) and std.ascii.isDigit(self.byteAt(1))) {
+                return self.consumeNumeric();
+            }
+            self.advance(1);
+            return .{ .delim = '.' };
+        },
+
+        // Consume hash token
+        '#' => {
+            self.advance(1);
+            if (self.isIdentStart()) {
+                return .{ .id_hash = self.consumeName() };
+            }
+            if (self.nextByte()) |it| {
+                switch (it) {
+                    // Any other valid case here already resulted in IDHash.
+                    '0'...'9', '-' => return .{ .unrestricted_hash = self.consumeName() },
+                    else => {},
+                }
+            }
+            return .{ .delim = '#' };
+        },
+
+        // Consume at-rules
+        '@' => {
+            self.advance(1);
+            return if (isIdentStart(self))
+                .{ .at_keyword = consumeName(self) }
+            else
+                .{ .delim = '@' };
+        },
+
+        '<' => {
+            if (self.startsWith("<!--")) {
+                self.advance(4);
+                return .cdo;
+            } else {
+                self.advance(1);
+                return .{ .delim = '<' };
+            }
+        },
+
+        '\\' => {
+            if (!self.hasNewlineAt(1)) {
+                return self.consumeIdentLike();
+            }
+
+            self.advance(1);
+            return .{ .delim = '\\' };
+        },
+
+        else => {
+            if (b > 0x7F) { // not is ascii
+                return self.consumeIdentLike();
+            }
+
+            self.advance(1);
+            return .{ .delim = b };
+        },
+    };
+}
+
+const testing = std.testing;
+
+fn expectTokensEqual(input: []const u8, tokens: []const Token) !void {
+    var lexer = Tokenizer{ .input = input };
+
+    var i: usize = 0;
+    while (lexer.next()) |token| : (i += 1) {
+        assert(i < tokens.len);
+        try testing.expectEqualDeep(tokens[i], token);
+    }
+
+    try testing.expectEqual(i, tokens.len);
+    try testing.expectEqualDeep(null, lexer.next());
+}
+
+test "smoke" {
+    try expectTokensEqual(
+        \\.lightpanda  {color:red;}
+    , &.{
+        .{ .delim = '.' },
+        .{ .ident = "lightpanda" },
+        .{ .white_space = "  " },
+        .curly_bracket_block,
+        .{ .ident = "color" },
+        .colon,
+        .{ .ident = "red" },
+        .semicolon,
+        .close_curly_bracket,
+    });
+}

src/browser/css/css.zig

@@ -1,176 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-// CSS Selector parser and query
-// This package is a rewrite in Zig of Cascadia CSS Selector parser.
-// see https://github.com/andybalholm/cascadia
-const std = @import("std");
-const Selector = @import("selector.zig").Selector;
-const parser = @import("parser.zig");
-
-// parse parse a selector string and returns the parsed result or an error.
-pub fn parse(alloc: std.mem.Allocator, s: []const u8, opts: parser.ParseOptions) parser.ParseError!Selector {
-    var p = parser.Parser{ .s = s, .i = 0, .opts = opts };
-    return p.parse(alloc);
-}
-
-// matchFirst call m.match with the first node that matches the selector s, from the
-// descendants of n and returns true. If none matches, it returns false.
-pub fn matchFirst(s: Selector, node: anytype, m: anytype) !bool {
-    var c = try node.firstChild();
-    while (true) {
-        if (c == null) break;
-
-        if (try s.match(c.?)) {
-            try m.match(c.?);
-            return true;
-        }
-
-        if (try matchFirst(s, c.?, m)) return true;
-        c = try c.?.nextSibling();
-    }
-    return false;
-}
-
-// matchAll call m.match with the all the nodes that matches the selector s, from the
-// descendants of n.
-pub fn matchAll(s: Selector, node: anytype, m: anytype) !void {
-    var c = try node.firstChild();
-    while (true) {
-        if (c == null) break;
-
-        if (try s.match(c.?)) try m.match(c.?);
-        try matchAll(s, c.?, m);
-        c = try c.?.nextSibling();
-    }
-}
-
-test "parse" {
-    const alloc = std.testing.allocator;
-
-    const testcases = [_][]const u8{
-        "address",
-        "*",
-        "#foo",
-        "li#t1",
-        "*#t4",
-        ".t1",
-        "p.t1",
-        "div.teST",
-        ".t1.fail",
-        "p.t1.t2",
-        "p.--t1",
-        "p.--t1.--t2",
-        "p[title]",
-        "div[class=\"red\" i]",
-        "address[title=\"foo\"]",
-        "address[title=\"FoOIgnoRECaSe\" i]",
-        "address[title!=\"foo\"]",
-        "address[title!=\"foo\" i]",
-        "p[title!=\"FooBarUFoo\" i]",
-        "[  \t title        ~=       foo    ]",
-        "p[title~=\"FOO\" i]",
-        "p[title~=toofoo i]",
-        "[title~=\"hello world\"]",
-        "[title~=\"hello\" i]",
-        "[title~=\"hello\"          I]",
-        "[lang|=\"en\"]",
-        "[lang|=\"EN\" i]",
-        "[lang|=\"EN\"     i]",
-        "[title^=\"foo\"]",
-        "[title^=\"foo\" i]",
-        "[title$=\"bar\"]",
-        "[title$=\"BAR\" i]",
-        "[title*=\"bar\"]",
-        "[title*=\"BaRu\" i]",
-        "[title*=\"BaRu\" I]",
-        "p[class$=\" \"]",
-        "p[class$=\"\"]",
-        "p[class^=\" \"]",
-        "p[class^=\"\"]",
-        "p[class*=\" \"]",
-        "p[class*=\"\"]",
-        "input[name=Sex][value=F]",
-        "table[border=\"0\"][cellpadding=\"0\"][cellspacing=\"0\"]",
-        ".t1:not(.t2)",
-        "div:not(.t1)",
-        "div:not([class=\"t2\"])",
-        "li:nth-child(odd)",
-        "li:nth-child(even)",
-        "li:nth-child(-n+2)",
-        "li:nth-child(3n+1)",
-        "li:nth-last-child(odd)",
-        "li:nth-last-child(even)",
-        "li:nth-last-child(-n+2)",
-        "li:nth-last-child(3n+1)",
-        "span:first-child",
-        "span:last-child",
-        "p:nth-of-type(2)",
-        "p:nth-last-of-type(2)",
-        "p:last-of-type",
-        "p:first-of-type",
-        "p:only-child",
-        "p:only-of-type",
-        ":empty",
-        "div p",
-        "div table p",
-        "div > p",
-        "p ~ p",
-        "p + p",
-        "li, p",
-        "p +/*This is a comment*/ p",
-        "p:contains(\"that wraps\")",
-        "p:containsOwn(\"that wraps\")",
-        ":containsOwn(\"inner\")",
-        "p:containsOwn(\"block\")",
-        "div:has(#p1)",
-        "div:has(:containsOwn(\"2\"))",
-        "body :has(:containsOwn(\"2\"))",
-        "body :haschild(:containsOwn(\"2\"))",
-        "p:matches([\\d])",
-        "p:matches([a-z])",
-        "p:matches([a-zA-Z])",
-        "p:matches([^\\d])",
-        "p:matches(^(0|a))",
-        "p:matches(^\\d+$)",
-        "p:not(:matches(^\\d+$))",
-        "div :matchesOwn(^\\d+$)",
-        "[href#=(fina)]:not([href#=(\\/\\/[^\\/]+untrusted)])",
-        "[href#=(^https:\\/\\/[^\\/]*\\/?news)]",
-        ":input",
-        ":root",
-        "*:root",
-        "html:nth-child(1)",
-        "*:root:first-child",
-        "*:root:nth-child(1)",
-        "a:not(:root)",
-        "body > *:nth-child(3n+2)",
-        "input:disabled",
-        ":disabled",
-        ":enabled",
-        "div.class1, div.class2",
-    };
-
-    for (testcases) |tc| {
-        const s = parse(alloc, tc, .{}) catch |e| {
-            std.debug.print("query {s}", .{tc});
-            return e;
-        };
-        defer s.deinit(alloc);
-    }
-}

src/browser/css/libdom.zig

@@ -1,102 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-
-// Node implementation with Netsurf Libdom C lib.
-pub const Node = struct {
-    node: *parser.Node,
-
-    pub fn firstChild(n: Node) !?Node {
-        const c = try parser.nodeFirstChild(n.node);
-        if (c) |cc| return .{ .node = cc };
-
-        return null;
-    }
-
-    pub fn lastChild(n: Node) !?Node {
-        const c = try parser.nodeLastChild(n.node);
-        if (c) |cc| return .{ .node = cc };
-
-        return null;
-    }
-
-    pub fn nextSibling(n: Node) !?Node {
-        const c = try parser.nodeNextSibling(n.node);
-        if (c) |cc| return .{ .node = cc };
-
-        return null;
-    }
-
-    pub fn prevSibling(n: Node) !?Node {
-        const c = try parser.nodePreviousSibling(n.node);
-        if (c) |cc| return .{ .node = cc };
-
-        return null;
-    }
-
-    pub fn parent(n: Node) !?Node {
-        const c = try parser.nodeParentNode(n.node);
-        if (c) |cc| return .{ .node = cc };
-
-        return null;
-    }
-
-    pub fn isElement(n: Node) bool {
-        const t = parser.nodeType(n.node) catch return false;
-        return t == .element;
-    }
-
-    pub fn isDocument(n: Node) bool {
-        const t = parser.nodeType(n.node) catch return false;
-        return t == .document;
-    }
-
-    pub fn isComment(n: Node) bool {
-        const t = parser.nodeType(n.node) catch return false;
-        return t == .comment;
-    }
-
-    pub fn isText(n: Node) bool {
-        const t = parser.nodeType(n.node) catch return false;
-        return t == .text;
-    }
-
-    pub fn isEmptyText(n: Node) !bool {
-        const data = try parser.nodeTextContent(n.node);
-        if (data == null) return true;
-        if (data.?.len == 0) return true;
-
-        return std.mem.trim(u8, data.?, &std.ascii.whitespace).len == 0;
-    }
-
-    pub fn tag(n: Node) ![]const u8 {
-        return try parser.nodeName(n.node);
-    }
-
-    pub fn attr(n: Node, key: []const u8) !?[]const u8 {
-        if (!n.isElement()) return null;
-        return try parser.elementGetAttribute(parser.nodeToElement(n.node), key);
-    }
-
-    pub fn eql(a: Node, b: Node) bool {
-        return a.node == b.node;
-    }
-};

src/browser/css/libdom_test.zig

@@ -1,325 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const css = @import("css.zig");
-const Node = @import("libdom.zig").Node;
-const parser = @import("../netsurf.zig");
-
-const Matcher = struct {
-    const Nodes = std.ArrayList(Node);
-
-    nodes: Nodes,
-
-    fn init(alloc: std.mem.Allocator) Matcher {
-        return .{ .nodes = Nodes.init(alloc) };
-    }
-
-    fn deinit(m: *Matcher) void {
-        m.nodes.deinit();
-    }
-
-    fn reset(m: *Matcher) void {
-        m.nodes.clearRetainingCapacity();
-    }
-
-    pub fn match(m: *Matcher, n: Node) !void {
-        try m.nodes.append(n);
-    }
-};
-
-test "matchFirst" {
-    const alloc = std.testing.allocator;
-
-    var matcher = Matcher.init(alloc);
-    defer matcher.deinit();
-
-    const testcases = [_]struct {
-        q: []const u8,
-        html: []const u8,
-        exp: usize,
-    }{
-        .{ .q = "address", .html = "<body><address>This address...</address></body>", .exp = 1 },
-        .{ .q = "*", .html = "<!-- comment --><html><head></head><body>text</body></html>", .exp = 1 },
-        .{ .q = "*", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "#foo", .html = "<p id=\"foo\"><p id=\"bar\">", .exp = 1 },
-        .{ .q = "li#t1", .html = "<ul><li id=\"t1\"><p id=\"t1\">", .exp = 1 },
-        .{ .q = ".t3", .html = "<ul><li class=\"t1\"><li class=\"t2 t3\">", .exp = 1 },
-        .{ .q = "*#t4", .html = "<ol><li id=\"t4\"><li id=\"t44\">", .exp = 1 },
-        .{ .q = ".t1", .html = "<ul><li class=\"t1\"><li class=\"t2\">", .exp = 1 },
-        .{ .q = "p.t1", .html = "<p class=\"t1 t2\">", .exp = 1 },
-        .{ .q = "div.teST", .html = "<div class=\"test\">", .exp = 0 },
-        .{ .q = ".t1.fail", .html = "<p class=\"t1 t2\">", .exp = 0 },
-        .{ .q = "p.t1.t2", .html = "<p class=\"t1 t2\">", .exp = 1 },
-        .{ .q = "p.--t1", .html = "<p class=\"--t1 --t2\">", .exp = 1 },
-        .{ .q = "p.--t1.--t2", .html = "<p class=\"--t1 --t2\">", .exp = 1 },
-        .{ .q = "p[title]", .html = "<p><p title=\"title\">", .exp = 1 },
-        .{ .q = "div[class=\"red\" i]", .html = "<div><div class=\"Red\">", .exp = 1 },
-        .{ .q = "address[title=\"foo\"]", .html = "<address><address title=\"foo\"><address title=\"bar\">", .exp = 1 },
-        .{ .q = "address[title=\"FoOIgnoRECaSe\" i]", .html = "<address><address title=\"fooIgnoreCase\"><address title=\"bar\">", .exp = 1 },
-        .{ .q = "address[title!=\"foo\"]", .html = "<address><address title=\"foo\"><address title=\"bar\">", .exp = 1 },
-        .{ .q = "address[title!=\"foo\" i]", .html = "<address><address title=\"FOO\"><address title=\"bar\">", .exp = 1 },
-        .{ .q = "p[title!=\"FooBarUFoo\" i]", .html = "<p title=\"fooBARuFOO\"><p title=\"varfoo\">", .exp = 1 },
-        .{ .q = "[   title        ~=       foo    ]", .html = "<p title=\"tot foo bar\">", .exp = 1 },
-        .{ .q = "p[title~=\"FOO\" i]", .html = "<p title=\"tot foo bar\">", .exp = 1 },
-        .{ .q = "p[title~=toofoo i]", .html = "<p title=\"tot foo bar\">", .exp = 0 },
-        .{ .q = "[title~=\"hello world\"]", .html = "<p title=\"hello world\">", .exp = 0 },
-        .{ .q = "[title~=\"hello\" i]", .html = "<p title=\"HELLO world\">", .exp = 1 },
-        .{ .q = "[title~=\"hello\"          I]", .html = "<p title=\"HELLO world\">", .exp = 1 },
-        .{ .q = "[lang|=\"en\"]", .html = "<p lang=\"en\"><p lang=\"en-gb\"><p lang=\"enough\"><p lang=\"fr-en\">", .exp = 1 },
-        .{ .q = "[lang|=\"EN\" i]", .html = "<p lang=\"en\"><p lang=\"En-gb\"><p lang=\"enough\"><p lang=\"fr-en\">", .exp = 1 },
-        .{ .q = "[lang|=\"EN\"     i]", .html = "<p lang=\"en\"><p lang=\"En-gb\"><p lang=\"enough\"><p lang=\"fr-en\">", .exp = 1 },
-        .{ .q = "[title^=\"foo\"]", .html = "<p title=\"foobar\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title^=\"foo\" i]", .html = "<p title=\"FooBAR\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title$=\"bar\"]", .html = "<p title=\"foobar\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title$=\"BAR\" i]", .html = "<p title=\"foobar\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title*=\"bar\"]", .html = "<p title=\"foobarufoo\">", .exp = 1 },
-        .{ .q = "[title*=\"BaRu\" i]", .html = "<p title=\"foobarufoo\">", .exp = 1 },
-        .{ .q = "[title*=\"BaRu\" I]", .html = "<p title=\"foobarufoo\">", .exp = 1 },
-        .{ .q = "p[class$=\" \"]", .html = "<p class=\" \">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class$=\"\"]", .html = "<p class=\"\">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class^=\" \"]", .html = "<p class=\" \">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class^=\"\"]", .html = "<p class=\"\">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class*=\" \"]", .html = "<p class=\" \">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class*=\"\"]", .html = "<p class=\"\">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "input[name=Sex][value=F]", .html = "<input type=\"radio\" name=\"Sex\" value=\"F\"/>", .exp = 1 },
-        .{ .q = "table[border=\"0\"][cellpadding=\"0\"][cellspacing=\"0\"]", .html = "<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"table-layout: fixed; width: 100%; border: 0 dashed; border-color: #FFFFFF\"><tr style=\"height:64px\">aaa</tr></table>", .exp = 1 },
-        .{ .q = ".t1:not(.t2)", .html = "<p class=\"t1 t2\">", .exp = 0 },
-        .{ .q = "div:not(.t1)", .html = "<div class=\"t3\">", .exp = 1 },
-        .{ .q = "div:not([class=\"t2\"])", .html = "<div><div class=\"t2\"><div class=\"t3\">", .exp = 1 },
-        .{ .q = "li:nth-child(odd)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 1 },
-        .{ .q = "li:nth-child(even)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 1 },
-        .{ .q = "li:nth-child(-n+2)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 1 },
-        .{ .q = "li:nth-child(3n+1)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 1 },
-        .{ .q = "li:nth-last-child(odd)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 1 },
-        .{ .q = "li:nth-last-child(even)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 1 },
-        .{ .q = "li:nth-last-child(-n+2)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 1 },
-        .{ .q = "li:nth-last-child(3n+1)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 1 },
-        .{ .q = "span:first-child", .html = "<p>some text <span id=\"1\">and a span</span><span id=\"2\"> and another</span></p>", .exp = 1 },
-        .{ .q = "span:last-child", .html = "<span>a span</span> and some text", .exp = 1 },
-        .{ .q = "p:nth-of-type(2)", .html = "<address></address><p id=1><p id=2>", .exp = 1 },
-        .{ .q = "p:nth-last-of-type(2)", .html = "<address></address><p id=1><p id=2></p><a>", .exp = 1 },
-        .{ .q = "p:last-of-type", .html = "<address></address><p id=1><p id=2></p><a>", .exp = 1 },
-        .{ .q = "p:first-of-type", .html = "<address></address><p id=1><p id=2></p><a>", .exp = 1 },
-        .{ .q = "p:only-child", .html = "<div><p id=\"1\"></p><a></a></div><div><p id=\"2\"></p></div>", .exp = 1 },
-        .{ .q = "p:only-of-type", .html = "<div><p id=\"1\"></p><a></a></div><div><p id=\"2\"></p><p id=\"3\"></p></div>", .exp = 1 },
-        .{ .q = ":empty", .html = "<p id=\"1\"><!-- --><p id=\"2\">Hello<p id=\"3\"><span>", .exp = 1 },
-        .{ .q = "div p", .html = "<div><p id=\"1\"><table><tr><td><p id=\"2\"></table></div><p id=\"3\">", .exp = 1 },
-        .{ .q = "div table p", .html = "<div><p id=\"1\"><table><tr><td><p id=\"2\"></table></div><p id=\"3\">", .exp = 1 },
-        .{ .q = "div > p", .html = "<div><p id=\"1\"><div><p id=\"2\"></div><table><tr><td><p id=\"3\"></table></div>", .exp = 1 },
-        .{ .q = "p ~ p", .html = "<p id=\"1\"><p id=\"2\"></p><address></address><p id=\"3\">", .exp = 1 },
-        .{ .q = "p + p", .html = "<p id=\"1\"></p> <!--comment--> <p id=\"2\"></p><address></address><p id=\"3\">", .exp = 1 },
-        .{ .q = "li, p", .html = "<ul><li></li><li></li></ul><p>", .exp = 1 },
-        .{ .q = "p +/*This is a comment*/ p", .html = "<p id=\"1\"><p id=\"2\"></p><address></address><p id=\"3\">", .exp = 1 },
-        // .{ .q = "p:contains(\"that wraps\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 1 },
-        // .{ .q = "p:containsOwn(\"that wraps\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 0 },
-        // .{ .q = ":containsOwn(\"inner\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 1 },
-        // .{ .q = "p:containsOwn(\"block\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 1 },
-        // .{ .q = "div:has(#p1)", .html = "<div id=\"d1\"><p id=\"p1\"><span>text content</span></p></div><div id=\"d2\"/>", .exp = 1 },
-        // .{ .q = "div:has(:containsOwn(\"2\"))", .html = "<div id=\"d1\"><p id=\"p1\"><span>contents 1</span></p></div> <div id=\"d2\"><p>contents <em>2</em></p></div>", .exp = 1 },
-        // .{ .q = "body :has(:containsOwn(\"2\"))", .html = "<body><div id=\"d1\"><p id=\"p1\"><span>contents 1</span></p></div> <div id=\"d2\"><p id=\"p2\">contents <em>2</em></p></div></body>", .exp = 1 },
-        // .{ .q = "body :haschild(:containsOwn(\"2\"))", .html = "<body><div id=\"d1\"><p id=\"p1\"><span>contents 1</span></p></div> <div id=\"d2\"><p id=\"p2\">contents <em>2</em></p></div></body>", .exp = 1 },
-        // .{ .q = "p:matches([\\d])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:matches([a-z])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:matches([a-zA-Z])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:matches([^\\d])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:matches(^(0|a))", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:matches(^\\d+$)", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:not(:matches(^\\d+$))", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "div :matchesOwn(^\\d+$)", .html = "<div><p id=\"p1\">01234<em>567</em>89</p><div>", .exp = 1 },
-        // .{ .q = "[href#=(fina)]:not([href#=(\\/\\/[^\\/]+untrusted)])", .html = "<ul> <li><a id=\"a1\" href=\"http://www.google.com/finance\"></a> <li><a id=\"a2\" href=\"http://finance.yahoo.com/\"></a> <li><a id=\"a2\" href=\"http://finance.untrusted.com/\"/> <li><a id=\"a3\" href=\"https://www.google.com/news\"/> <li><a id=\"a4\" href=\"http://news.yahoo.com\"/> </ul>", .exp = 1 },
-        // .{ .q = "[href#=(^https:\\/\\/[^\\/]*\\/?news)]", .html = "<ul> <li><a id=\"a1\" href=\"http://www.google.com/finance\"/> <li><a id=\"a2\" href=\"http://finance.yahoo.com/\"/> <li><a id=\"a3\" href=\"https://www.google.com/news\"></a> <li><a id=\"a4\" href=\"http://news.yahoo.com\"/> </ul>", .exp = 1 },
-        .{ .q = ":input", .html = "<form> <label>Username <input type=\"text\" name=\"username\" /></label> <label>Password <input type=\"password\" name=\"password\" /></label> <label>Country <select name=\"country\"> <option value=\"ca\">Canada</option> <option value=\"us\">United States</option> </select> </label> <label>Bio <textarea name=\"bio\"></textarea></label> <button>Sign up</button> </form>", .exp = 1 },
-        .{ .q = ":root", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "*:root", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "html:nth-child(1)", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "*:root:first-child", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "*:root:nth-child(1)", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "a:not(:root)", .html = "<html><head></head><body><a href=\"http://www.foo.com\"></a></body></html>", .exp = 1 },
-        .{ .q = "body > *:nth-child(3n+2)", .html = "<html><head></head><body><p></p><div></div><span></span><a></a><form></form></body></html>", .exp = 1 },
-        .{ .q = "input:disabled", .html = "<html><head></head><body><fieldset disabled><legend id=\"1\"><input id=\"i1\"/></legend><legend id=\"2\"><input id=\"i2\"/></legend></fieldset></body></html>", .exp = 1 },
-        .{ .q = ":disabled", .html = "<html><head></head><body><fieldset disabled></fieldset></body></html>", .exp = 1 },
-        .{ .q = ":enabled", .html = "<html><head></head><body><fieldset></fieldset></body></html>", .exp = 1 },
-        .{ .q = "div.class1, div.class2", .html = "<div class=class1></div><div class=class2></div><div class=class3></div>", .exp = 1 },
-    };
-
-    for (testcases) |tc| {
-        matcher.reset();
-
-        const doc = try parser.documentHTMLParseFromStr(tc.html);
-        defer parser.documentHTMLClose(doc) catch {};
-
-        const s = css.parse(alloc, tc.q, .{}) catch |e| {
-            std.debug.print("parse, query: {s}\n", .{tc.q});
-            return e;
-        };
-
-        defer s.deinit(alloc);
-
-        const node = Node{ .node = parser.documentHTMLToNode(doc) };
-
-        _ = css.matchFirst(s, node, &matcher) catch |e| {
-            std.debug.print("match, query: {s}\n", .{tc.q});
-            return e;
-        };
-        std.testing.expectEqual(tc.exp, matcher.nodes.items.len) catch |e| {
-            std.debug.print("expectation, query: {s}\n", .{tc.q});
-            return e;
-        };
-    }
-}
-
-test "matchAll" {
-    const alloc = std.testing.allocator;
-
-    var matcher = Matcher.init(alloc);
-    defer matcher.deinit();
-
-    const testcases = [_]struct {
-        q: []const u8,
-        html: []const u8,
-        exp: usize,
-    }{
-        .{ .q = "address", .html = "<body><address>This address...</address></body>", .exp = 1 },
-        .{ .q = "*", .html = "<!-- comment --><html><head></head><body>text</body></html>", .exp = 3 },
-        .{ .q = "*", .html = "<html><head></head><body></body></html>", .exp = 3 },
-        .{ .q = "#foo", .html = "<p id=\"foo\"><p id=\"bar\">", .exp = 1 },
-        .{ .q = "li#t1", .html = "<ul><li id=\"t1\"><p id=\"t1\">", .exp = 1 },
-        .{ .q = ".t3", .html = "<ul><li class=\"t1\"><li class=\"t2 t3\">", .exp = 1 },
-        .{ .q = "*#t4", .html = "<ol><li id=\"t4\"><li id=\"t44\">", .exp = 1 },
-        .{ .q = ".t1", .html = "<ul><li class=\"t1\"><li class=\"t2\">", .exp = 1 },
-        .{ .q = "p.t1", .html = "<p class=\"t1 t2\">", .exp = 1 },
-        .{ .q = "div.teST", .html = "<div class=\"test\">", .exp = 0 },
-        .{ .q = ".t1.fail", .html = "<p class=\"t1 t2\">", .exp = 0 },
-        .{ .q = "p.t1.t2", .html = "<p class=\"t1 t2\">", .exp = 1 },
-        .{ .q = "p.--t1", .html = "<p class=\"--t1 --t2\">", .exp = 1 },
-        .{ .q = "p.--t1.--t2", .html = "<p class=\"--t1 --t2\">", .exp = 1 },
-        .{ .q = "p[title]", .html = "<p><p title=\"title\">", .exp = 1 },
-        .{ .q = "div[class=\"red\" i]", .html = "<div><div class=\"Red\">", .exp = 1 },
-        .{ .q = "address[title=\"foo\"]", .html = "<address><address title=\"foo\"><address title=\"bar\">", .exp = 1 },
-        .{ .q = "address[title=\"FoOIgnoRECaSe\" i]", .html = "<address><address title=\"fooIgnoreCase\"><address title=\"bar\">", .exp = 1 },
-        .{ .q = "address[title!=\"foo\"]", .html = "<address><address title=\"foo\"><address title=\"bar\">", .exp = 2 },
-        .{ .q = "address[title!=\"foo\" i]", .html = "<address><address title=\"FOO\"><address title=\"bar\">", .exp = 2 },
-        .{ .q = "p[title!=\"FooBarUFoo\" i]", .html = "<p title=\"fooBARuFOO\"><p title=\"varfoo\">", .exp = 1 },
-        .{ .q = "[   title        ~=       foo    ]", .html = "<p title=\"tot foo bar\">", .exp = 1 },
-        .{ .q = "p[title~=\"FOO\" i]", .html = "<p title=\"tot foo bar\">", .exp = 1 },
-        .{ .q = "p[title~=toofoo i]", .html = "<p title=\"tot foo bar\">", .exp = 0 },
-        .{ .q = "[title~=\"hello world\"]", .html = "<p title=\"hello world\">", .exp = 0 },
-        .{ .q = "[title~=\"hello\" i]", .html = "<p title=\"HELLO world\">", .exp = 1 },
-        .{ .q = "[title~=\"hello\"          I]", .html = "<p title=\"HELLO world\">", .exp = 1 },
-        .{ .q = "[lang|=\"en\"]", .html = "<p lang=\"en\"><p lang=\"en-gb\"><p lang=\"enough\"><p lang=\"fr-en\">", .exp = 2 },
-        .{ .q = "[lang|=\"EN\" i]", .html = "<p lang=\"en\"><p lang=\"En-gb\"><p lang=\"enough\"><p lang=\"fr-en\">", .exp = 2 },
-        .{ .q = "[lang|=\"EN\"     i]", .html = "<p lang=\"en\"><p lang=\"En-gb\"><p lang=\"enough\"><p lang=\"fr-en\">", .exp = 2 },
-        .{ .q = "[title^=\"foo\"]", .html = "<p title=\"foobar\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title^=\"foo\" i]", .html = "<p title=\"FooBAR\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title$=\"bar\"]", .html = "<p title=\"foobar\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title$=\"BAR\" i]", .html = "<p title=\"foobar\"><p title=\"barfoo\">", .exp = 1 },
-        .{ .q = "[title*=\"bar\"]", .html = "<p title=\"foobarufoo\">", .exp = 1 },
-        .{ .q = "[title*=\"BaRu\" i]", .html = "<p title=\"foobarufoo\">", .exp = 1 },
-        .{ .q = "[title*=\"BaRu\" I]", .html = "<p title=\"foobarufoo\">", .exp = 1 },
-        .{ .q = "p[class$=\" \"]", .html = "<p class=\" \">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class$=\"\"]", .html = "<p class=\"\">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class^=\" \"]", .html = "<p class=\" \">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class^=\"\"]", .html = "<p class=\"\">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class*=\" \"]", .html = "<p class=\" \">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "p[class*=\"\"]", .html = "<p class=\"\">This text should be green.</p><p>This text should be green.</p>", .exp = 0 },
-        .{ .q = "input[name=Sex][value=F]", .html = "<input type=\"radio\" name=\"Sex\" value=\"F\"/>", .exp = 1 },
-        .{ .q = "table[border=\"0\"][cellpadding=\"0\"][cellspacing=\"0\"]", .html = "<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"table-layout: fixed; width: 100%; border: 0 dashed; border-color: #FFFFFF\"><tr style=\"height:64px\">aaa</tr></table>", .exp = 1 },
-        .{ .q = ".t1:not(.t2)", .html = "<p class=\"t1 t2\">", .exp = 0 },
-        .{ .q = "div:not(.t1)", .html = "<div class=\"t3\">", .exp = 1 },
-        .{ .q = "div:not([class=\"t2\"])", .html = "<div><div class=\"t2\"><div class=\"t3\">", .exp = 2 },
-        .{ .q = "li:nth-child(odd)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 2 },
-        .{ .q = "li:nth-child(even)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 1 },
-        .{ .q = "li:nth-child(-n+2)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 2 },
-        .{ .q = "li:nth-child(3n+1)", .html = "<ol><li id=1><li id=2><li id=3></ol>", .exp = 1 },
-        .{ .q = "li:nth-last-child(odd)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 2 },
-        .{ .q = "li:nth-last-child(even)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 2 },
-        .{ .q = "li:nth-last-child(-n+2)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 2 },
-        .{ .q = "li:nth-last-child(3n+1)", .html = "<ol><li id=1><li id=2><li id=3><li id=4></ol>", .exp = 2 },
-        .{ .q = "span:first-child", .html = "<p>some text <span id=\"1\">and a span</span><span id=\"2\"> and another</span></p>", .exp = 1 },
-        .{ .q = "span:last-child", .html = "<span>a span</span> and some text", .exp = 1 },
-        .{ .q = "p:nth-of-type(2)", .html = "<address></address><p id=1><p id=2>", .exp = 1 },
-        .{ .q = "p:nth-last-of-type(2)", .html = "<address></address><p id=1><p id=2></p><a>", .exp = 1 },
-        .{ .q = "p:last-of-type", .html = "<address></address><p id=1><p id=2></p><a>", .exp = 1 },
-        .{ .q = "p:first-of-type", .html = "<address></address><p id=1><p id=2></p><a>", .exp = 1 },
-        .{ .q = "p:only-child", .html = "<div><p id=\"1\"></p><a></a></div><div><p id=\"2\"></p></div>", .exp = 1 },
-        .{ .q = "p:only-of-type", .html = "<div><p id=\"1\"></p><a></a></div><div><p id=\"2\"></p><p id=\"3\"></p></div>", .exp = 1 },
-        .{ .q = ":empty", .html = "<p id=\"1\"><!-- --><p id=\"2\">Hello<p id=\"3\"><span>", .exp = 3 },
-        .{ .q = "div p", .html = "<div><p id=\"1\"><table><tr><td><p id=\"2\"></table></div><p id=\"3\">", .exp = 2 },
-        .{ .q = "div table p", .html = "<div><p id=\"1\"><table><tr><td><p id=\"2\"></table></div><p id=\"3\">", .exp = 1 },
-        .{ .q = "div > p", .html = "<div><p id=\"1\"><div><p id=\"2\"></div><table><tr><td><p id=\"3\"></table></div>", .exp = 2 },
-        .{ .q = "p ~ p", .html = "<p id=\"1\"><p id=\"2\"></p><address></address><p id=\"3\">", .exp = 2 },
-        .{ .q = "p + p", .html = "<p id=\"1\"></p> <!--comment--> <p id=\"2\"></p><address></address><p id=\"3\">", .exp = 1 },
-        .{ .q = "li, p", .html = "<ul><li></li><li></li></ul><p>", .exp = 3 },
-        .{ .q = "p +/*This is a comment*/ p", .html = "<p id=\"1\"><p id=\"2\"></p><address></address><p id=\"3\">", .exp = 1 },
-        // .{ .q = "p:contains(\"that wraps\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 1 },
-        // .{ .q = "p:containsOwn(\"that wraps\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 0 },
-        // .{ .q = ":containsOwn(\"inner\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 1 },
-        // .{ .q = "p:containsOwn(\"block\")", .html = "<p>Text block that <span>wraps inner text</span> and continues</p>", .exp = 1 },
-        .{ .q = "div:has(#p1)", .html = "<div id=\"d1\"><p id=\"p1\"><span>text content</span></p></div><div id=\"d2\"/>", .exp = 1 },
-        // .{ .q = "div:has(:containsOwn(\"2\"))", .html = "<div id=\"d1\"><p id=\"p1\"><span>contents 1</span></p></div> <div id=\"d2\"><p>contents <em>2</em></p></div>", .exp = 1 },
-        // .{ .q = "body :has(:containsOwn(\"2\"))", .html = "<body><div id=\"d1\"><p id=\"p1\"><span>contents 1</span></p></div> <div id=\"d2\"><p id=\"p2\">contents <em>2</em></p></div></body>", .exp = 2 },
-        // .{ .q = "body :haschild(:containsOwn(\"2\"))", .html = "<body><div id=\"d1\"><p id=\"p1\"><span>contents 1</span></p></div> <div id=\"d2\"><p id=\"p2\">contents <em>2</em></p></div></body>", .exp = 1 },
-        // .{ .q = "p:matches([\\d])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 2 },
-        // .{ .q = "p:matches([a-z])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:matches([a-zA-Z])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 2 },
-        // .{ .q = "p:matches([^\\d])", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 2 },
-        // .{ .q = "p:matches(^(0|a))", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 3 },
-        // .{ .q = "p:matches(^\\d+$)", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 1 },
-        // .{ .q = "p:not(:matches(^\\d+$))", .html = "<p id=\"p1\">0123456789</p><p id=\"p2\">abcdef</p><p id=\"p3\">0123ABCD</p>", .exp = 2 },
-        // .{ .q = "div :matchesOwn(^\\d+$)", .html = "<div><p id=\"p1\">01234<em>567</em>89</p><div>", .exp = 2 },
-        // .{ .q = "[href#=(fina)]:not([href#=(\\/\\/[^\\/]+untrusted)])", .html = "<ul> <li><a id=\"a1\" href=\"http://www.google.com/finance\"></a> <li><a id=\"a2\" href=\"http://finance.yahoo.com/\"></a> <li><a id=\"a2\" href=\"http://finance.untrusted.com/\"/> <li><a id=\"a3\" href=\"https://www.google.com/news\"/> <li><a id=\"a4\" href=\"http://news.yahoo.com\"/> </ul>", .exp = 2 },
-        // .{ .q = "[href#=(^https:\\/\\/[^\\/]*\\/?news)]", .html = "<ul> <li><a id=\"a1\" href=\"http://www.google.com/finance\"/> <li><a id=\"a2\" href=\"http://finance.yahoo.com/\"/> <li><a id=\"a3\" href=\"https://www.google.com/news\"></a> <li><a id=\"a4\" href=\"http://news.yahoo.com\"/> </ul>", .exp = 1 },
-        .{ .q = ":input", .html = "<form> <label>Username <input type=\"text\" name=\"username\" /></label> <label>Password <input type=\"password\" name=\"password\" /></label> <label>Country <select name=\"country\"> <option value=\"ca\">Canada</option> <option value=\"us\">United States</option> </select> </label> <label>Bio <textarea name=\"bio\"></textarea></label> <button>Sign up</button> </form>", .exp = 5 },
-        .{ .q = ":root", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "*:root", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "html:nth-child(1)", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "*:root:first-child", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "*:root:nth-child(1)", .html = "<html><head></head><body></body></html>", .exp = 1 },
-        .{ .q = "a:not(:root)", .html = "<html><head></head><body><a href=\"http://www.foo.com\"></a></body></html>", .exp = 1 },
-        .{ .q = "body > *:nth-child(3n+2)", .html = "<html><head></head><body><p></p><div></div><span></span><a></a><form></form></body></html>", .exp = 2 },
-        .{ .q = "input:disabled", .html = "<html><head></head><body><fieldset disabled><legend id=\"1\"><input id=\"i1\"/></legend><legend id=\"2\"><input id=\"i2\"/></legend></fieldset></body></html>", .exp = 1 },
-        .{ .q = ":disabled", .html = "<html><head></head><body><fieldset disabled></fieldset></body></html>", .exp = 1 },
-        .{ .q = ":enabled", .html = "<html><head></head><body><fieldset></fieldset></body></html>", .exp = 1 },
-        .{ .q = "div.class1, div.class2", .html = "<div class=class1></div><div class=class2></div><div class=class3></div>", .exp = 2 },
-    };
-
-    for (testcases) |tc| {
-        matcher.reset();
-
-        const doc = try parser.documentHTMLParseFromStr(tc.html);
-        defer parser.documentHTMLClose(doc) catch {};
-
-        const s = css.parse(alloc, tc.q, .{}) catch |e| {
-            std.debug.print("parse, query: {s}\n", .{tc.q});
-            return e;
-        };
-        defer s.deinit(alloc);
-
-        const node = Node{ .node = parser.documentHTMLToNode(doc) };
-
-        _ = css.matchAll(s, node, &matcher) catch |e| {
-            std.debug.print("match, query: {s}\n", .{tc.q});
-            return e;
-        };
-        std.testing.expectEqual(tc.exp, matcher.nodes.items.len) catch |e| {
-            std.debug.print("expectation, query: {s}\n", .{tc.q});
-            return e;
-        };
-    }
-}

src/browser/css/match_test.zig

@@ -1,587 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const css = @import("css.zig");
-
-// Node mock implementation for test only.
-pub const Node = struct {
-    child: ?*const Node = null,
-    last: ?*const Node = null,
-    sibling: ?*const Node = null,
-    prev: ?*const Node = null,
-    par: ?*const Node = null,
-
-    name: []const u8 = "",
-    att: ?[]const u8 = null,
-
-    pub fn firstChild(n: *const Node) !?*const Node {
-        return n.child;
-    }
-
-    pub fn lastChild(n: *const Node) !?*const Node {
-        return n.last;
-    }
-
-    pub fn nextSibling(n: *const Node) !?*const Node {
-        return n.sibling;
-    }
-
-    pub fn prevSibling(n: *const Node) !?*const Node {
-        return n.prev;
-    }
-
-    pub fn parent(n: *const Node) !?*const Node {
-        return n.par;
-    }
-
-    pub fn isElement(_: *const Node) bool {
-        return true;
-    }
-
-    pub fn isDocument(_: *const Node) bool {
-        return false;
-    }
-
-    pub fn isComment(_: *const Node) bool {
-        return false;
-    }
-
-    pub fn isText(_: *const Node) bool {
-        return false;
-    }
-
-    pub fn isEmptyText(_: *const Node) !bool {
-        return false;
-    }
-
-    pub fn tag(n: *const Node) ![]const u8 {
-        return n.name;
-    }
-
-    pub fn attr(n: *const Node, _: []const u8) !?[]const u8 {
-        return n.att;
-    }
-
-    pub fn eql(a: *const Node, b: *const Node) bool {
-        return a == b;
-    }
-};
-
-const Matcher = struct {
-    const Nodes = std.ArrayList(*const Node);
-
-    nodes: Nodes,
-
-    fn init(alloc: std.mem.Allocator) Matcher {
-        return .{ .nodes = Nodes.init(alloc) };
-    }
-
-    fn deinit(m: *Matcher) void {
-        m.nodes.deinit();
-    }
-
-    fn reset(m: *Matcher) void {
-        m.nodes.clearRetainingCapacity();
-    }
-
-    pub fn match(m: *Matcher, n: *const Node) !void {
-        try m.nodes.append(n);
-    }
-};
-
-test "matchFirst" {
-    const alloc = std.testing.allocator;
-
-    var matcher = Matcher.init(alloc);
-    defer matcher.deinit();
-
-    const testcases = [_]struct {
-        q: []const u8,
-        n: Node,
-        exp: usize,
-    }{
-        .{
-            .q = "address",
-            .n = .{ .child = &.{ .name = "body", .child = &.{ .name = "address" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "#foo",
-            .n = .{ .child = &.{ .name = "p", .att = "foo", .child = &.{ .name = "p" } } },
-            .exp = 1,
-        },
-        .{
-            .q = ".t1",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "t1" } } },
-            .exp = 1,
-        },
-        .{
-            .q = ".t1",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "foo t1" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "[foo]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo=baz]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "[foo!=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo!=baz]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo~=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "baz bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo~=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "[foo^=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo$=baz]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo*=rb]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo|=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo|=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar-baz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo|=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "ba" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "strong, a",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p a",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a", .par = &.{ .name = "p" } }, .sibling = &.{ .name = "a" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p a",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "span", .child = &.{
-                .name = "a",
-                .par = &.{ .name = "span", .par = &.{ .name = "p" } },
-            } } } },
-            .exp = 1,
-        },
-        .{
-            .q = ":not(p)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p:has(a)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p:has(strong)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "p:haschild(a)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p:haschild(strong)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "p:lang(en)",
-            .n = .{ .child = &.{ .name = "p", .att = "en-US", .child = &.{ .name = "a" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "a:lang(en)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a", .par = &.{ .att = "en-US" } } } },
-            .exp = 1,
-        },
-    };
-
-    for (testcases) |tc| {
-        matcher.reset();
-
-        const s = try css.parse(alloc, tc.q, .{});
-        defer s.deinit(alloc);
-
-        _ = css.matchFirst(s, &tc.n, &matcher) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-
-        std.testing.expectEqual(tc.exp, matcher.nodes.items.len) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-    }
-}
-
-test "matchAll" {
-    const alloc = std.testing.allocator;
-
-    var matcher = Matcher.init(alloc);
-    defer matcher.deinit();
-
-    const testcases = [_]struct {
-        q: []const u8,
-        n: Node,
-        exp: usize,
-    }{
-        .{
-            .q = "address",
-            .n = .{ .child = &.{ .name = "body", .child = &.{ .name = "address" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "#foo",
-            .n = .{ .child = &.{ .name = "p", .att = "foo", .child = &.{ .name = "p" } } },
-            .exp = 1,
-        },
-        .{
-            .q = ".t1",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "t1" } } },
-            .exp = 1,
-        },
-        .{
-            .q = ".t1",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "foo t1" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "[foo]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo=baz]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "[foo!=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo!=baz]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 2,
-        },
-        .{
-            .q = "[foo~=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "baz bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo~=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "[foo^=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo$=baz]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo*=rb]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "barbaz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo|=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo|=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "bar-baz" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "[foo|=bar]",
-            .n = .{ .child = &.{ .name = "p", .sibling = &.{ .name = "p", .att = "ba" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "strong, a",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 2,
-        },
-        .{
-            .q = "p a",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a", .par = &.{ .name = "p" } }, .sibling = &.{ .name = "a" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p a",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "span", .child = &.{
-                .name = "a",
-                .par = &.{ .name = "span", .par = &.{ .name = "p" } },
-            } } } },
-            .exp = 1,
-        },
-        .{
-            .q = ":not(p)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 2,
-        },
-        .{
-            .q = "p:has(a)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p:has(strong)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "p:haschild(a)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "p:haschild(strong)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a" }, .sibling = &.{ .name = "strong" } } },
-            .exp = 0,
-        },
-        .{
-            .q = "p:lang(en)",
-            .n = .{ .child = &.{ .name = "p", .att = "en-US", .child = &.{ .name = "a" } } },
-            .exp = 1,
-        },
-        .{
-            .q = "a:lang(en)",
-            .n = .{ .child = &.{ .name = "p", .child = &.{ .name = "a", .par = &.{ .att = "en-US" } } } },
-            .exp = 1,
-        },
-    };
-
-    for (testcases) |tc| {
-        matcher.reset();
-
-        const s = try css.parse(alloc, tc.q, .{});
-        defer s.deinit(alloc);
-
-        css.matchAll(s, &tc.n, &matcher) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-
-        std.testing.expectEqual(tc.exp, matcher.nodes.items.len) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-    }
-}
-
-test "pseudo class" {
-    const alloc = std.testing.allocator;
-
-    var matcher = Matcher.init(alloc);
-    defer matcher.deinit();
-
-    var p1: Node = .{ .name = "p" };
-    var p2: Node = .{ .name = "p" };
-    var a1: Node = .{ .name = "a" };
-
-    p1.sibling = &p2;
-    p2.prev = &p1;
-
-    p2.sibling = &a1;
-    a1.prev = &p2;
-
-    var root: Node = .{ .child = &p1, .last = &a1 };
-    p1.par = &root;
-    p2.par = &root;
-    a1.par = &root;
-
-    const testcases = [_]struct {
-        q: []const u8,
-        n: Node,
-        exp: ?*const Node,
-    }{
-        .{ .q = "p:only-child", .n = root, .exp = null },
-        .{ .q = "a:only-of-type", .n = root, .exp = &a1 },
-    };
-
-    for (testcases) |tc| {
-        matcher.reset();
-
-        const s = try css.parse(alloc, tc.q, .{});
-        defer s.deinit(alloc);
-
-        css.matchAll(s, &tc.n, &matcher) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-
-        if (tc.exp) |exp_n| {
-            const exp: usize = 1;
-            std.testing.expectEqual(exp, matcher.nodes.items.len) catch |e| {
-                std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-                return e;
-            };
-
-            std.testing.expectEqual(exp_n, matcher.nodes.items[0]) catch |e| {
-                std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-                return e;
-            };
-
-            continue;
-        }
-
-        const exp: usize = 0;
-        std.testing.expectEqual(exp, matcher.nodes.items.len) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-    }
-}
-
-test "nth pseudo class" {
-    const alloc = std.testing.allocator;
-
-    var matcher = Matcher.init(alloc);
-    defer matcher.deinit();
-
-    var p1: Node = .{ .name = "p" };
-    var p2: Node = .{ .name = "p" };
-
-    p1.sibling = &p2;
-    p2.prev = &p1;
-
-    var root: Node = .{ .child = &p1, .last = &p2 };
-    p1.par = &root;
-    p2.par = &root;
-
-    const testcases = [_]struct {
-        q: []const u8,
-        n: Node,
-        exp: ?*const Node,
-    }{
-        .{ .q = "a:nth-of-type(1)", .n = root, .exp = null },
-        .{ .q = "p:nth-of-type(1)", .n = root, .exp = &p1 },
-        .{ .q = "p:nth-of-type(2)", .n = root, .exp = &p2 },
-        .{ .q = "p:nth-of-type(0)", .n = root, .exp = null },
-        .{ .q = "p:nth-of-type(2n)", .n = root, .exp = &p2 },
-        .{ .q = "p:nth-last-child(1)", .n = root, .exp = &p2 },
-        .{ .q = "p:nth-last-child(2)", .n = root, .exp = &p1 },
-        .{ .q = "p:nth-child(1)", .n = root, .exp = &p1 },
-        .{ .q = "p:nth-child(2)", .n = root, .exp = &p2 },
-        .{ .q = "p:nth-child(odd)", .n = root, .exp = &p1 },
-        .{ .q = "p:nth-child(even)", .n = root, .exp = &p2 },
-        .{ .q = "p:nth-child(n+2)", .n = root, .exp = &p2 },
-    };
-
-    for (testcases) |tc| {
-        matcher.reset();
-
-        const s = try css.parse(alloc, tc.q, .{});
-        defer s.deinit(alloc);
-
-        css.matchAll(s, &tc.n, &matcher) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-
-        if (tc.exp) |exp_n| {
-            const exp: usize = 1;
-            std.testing.expectEqual(exp, matcher.nodes.items.len) catch |e| {
-                std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-                return e;
-            };
-
-            std.testing.expectEqual(exp_n, matcher.nodes.items[0]) catch |e| {
-                std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-                return e;
-            };
-
-            continue;
-        }
-
-        const exp: usize = 0;
-        std.testing.expectEqual(exp, matcher.nodes.items.len) catch |e| {
-            std.debug.print("query: {s}, parsed selector: {any}\n", .{ tc.q, s });
-            return e;
-        };
-    }
-}

src/browser/css/parser.zig

@@ -1,951 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-// CSS Selector parser
-// This file is a rewrite in Zig of Cascadia CSS Selector parser.
-// see https://github.com/andybalholm/cascadia
-// see https://github.com/andybalholm/cascadia/blob/master/parser.go
-const std = @import("std");
-const ascii = std.ascii;
-
-const selector = @import("selector.zig");
-const Selector = selector.Selector;
-const PseudoClass = selector.PseudoClass;
-const AttributeOP = selector.AttributeOP;
-const Combinator = selector.Combinator;
-
-const REPLACEMENT_CHARACTER = &.{ 239, 191, 189 };
-
-pub const ParseError = error{
-    ExpectedSelector,
-    ExpectedIdentifier,
-    ExpectedName,
-    ExpectedIDSelector,
-    ExpectedClassSelector,
-    ExpectedAttributeSelector,
-    ExpectedString,
-    ExpectedRegexp,
-    ExpectedPseudoClassSelector,
-    ExpectedParenthesis,
-    ExpectedParenthesisClose,
-    ExpectedNthExpression,
-    ExpectedInteger,
-    InvalidEscape,
-    EscapeLineEndingOutsideString,
-    InvalidUnicode,
-    UnicodeIsNotHandled,
-    WriteError,
-    PseudoElementNotAtSelectorEnd,
-    PseudoElementNotUnique,
-    PseudoElementDisabled,
-    InvalidAttributeOperator,
-    InvalidAttributeSelector,
-    InvalidString,
-    InvalidRegexp,
-    InvalidPseudoClassSelector,
-    EmptyPseudoClassSelector,
-    InvalidPseudoClass,
-    InvalidPseudoElement,
-    UnmatchParenthesis,
-    NotHandled,
-    UnknownPseudoSelector,
-    InvalidNthExpression,
-} || PseudoClass.Error || Combinator.Error || std.mem.Allocator.Error;
-
-pub const ParseOptions = struct {
-    accept_pseudo_elts: bool = true,
-};
-
-pub const Parser = struct {
-    s: []const u8, // string to parse
-    i: usize = 0, // current position
-
-    opts: ParseOptions,
-
-    pub fn parse(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        return p.parseSelectorGroup(alloc);
-    }
-
-    // skipWhitespace consumes whitespace characters and comments.
-    // It returns true if there was actually anything to skip.
-    fn skipWhitespace(p: *Parser) bool {
-        var i = p.i;
-        while (i < p.s.len) {
-            const c = p.s[i];
-            // Whitespaces.
-            if (ascii.isWhitespace(c)) {
-                i += 1;
-                continue;
-            }
-
-            // Comments.
-            if (c == '/') {
-                if (std.mem.startsWith(u8, p.s[i..], "/*")) {
-                    if (std.mem.indexOf(u8, p.s[i..], "*/")) |end| {
-                        i += end + "*/".len;
-                        continue;
-                    }
-                }
-            }
-            break;
-        }
-
-        if (i > p.i) {
-            p.i = i;
-            return true;
-        }
-
-        return false;
-    }
-
-    // parseSimpleSelectorSequence parses a selector sequence that applies to
-    // a single element.
-    fn parseSimpleSelectorSequence(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        if (p.i >= p.s.len) {
-            return ParseError.ExpectedSelector;
-        }
-
-        var buf = std.ArrayList(Selector).init(alloc);
-        defer buf.deinit();
-
-        switch (p.s[p.i]) {
-            '*' => {
-                // It's the universal selector. Just skip over it, since it
-                // doesn't affect the meaning.
-                p.i += 1;
-
-                // other version of universal selector
-                if (p.i + 2 < p.s.len and std.mem.eql(u8, "|*", p.s[p.i .. p.i + 2])) {
-                    p.i += 2;
-                }
-            },
-            '#', '.', '[', ':' => {
-                // There's no type selector. Wait to process the other till the
-                // main loop.
-            },
-            else => try buf.append(try p.parseTypeSelector(alloc)),
-        }
-
-        var pseudo_elt: ?PseudoClass = null;
-
-        loop: while (p.i < p.s.len) {
-            var ns: Selector = switch (p.s[p.i]) {
-                '#' => try p.parseIDSelector(alloc),
-                '.' => try p.parseClassSelector(alloc),
-                '[' => try p.parseAttributeSelector(alloc),
-                ':' => try p.parsePseudoclassSelector(alloc),
-                else => break :loop,
-            };
-            errdefer ns.deinit(alloc);
-
-            // From https://drafts.csswg.org/selectors-3/#pseudo-elements :
-            // "Only one pseudo-element may appear per selector, and if present
-            // it must appear after the sequence of simple selectors that
-            // represents the subjects of the selector.""
-            switch (ns) {
-                .pseudo_element => |e| {
-                    //  We found a pseudo-element.
-                    //  Only one pseudo-element is accepted per selector.
-                    if (pseudo_elt != null) return ParseError.PseudoElementNotUnique;
-                    if (!p.opts.accept_pseudo_elts) return ParseError.PseudoElementDisabled;
-
-                    pseudo_elt = e;
-                    ns.deinit(alloc);
-                },
-                else => {
-                    if (pseudo_elt != null) return ParseError.PseudoElementNotAtSelectorEnd;
-                    try buf.append(ns);
-                },
-            }
-        }
-
-        // no need wrap the selectors in compoundSelector
-        if (buf.items.len == 1 and pseudo_elt == null) return buf.items[0];
-
-        return .{ .compound = .{ .selectors = try buf.toOwnedSlice(), .pseudo_elt = pseudo_elt } };
-    }
-
-    // parseTypeSelector parses a type selector (one that matches by tag name).
-    fn parseTypeSelector(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        var buf = std.ArrayList(u8).init(alloc);
-        defer buf.deinit();
-        try p.parseIdentifier(buf.writer());
-
-        return .{ .tag = try buf.toOwnedSlice() };
-    }
-
-    // parseIdentifier parses an identifier.
-    fn parseIdentifier(p: *Parser, w: anytype) ParseError!void {
-        const prefix = '-';
-        var numPrefix: usize = 0;
-
-        while (p.s.len > p.i and p.s[p.i] == prefix) {
-            p.i += 1;
-            numPrefix += 1;
-        }
-
-        if (p.s.len <= p.i) {
-            return ParseError.ExpectedSelector;
-        }
-
-        const c = p.s[p.i];
-        if (!nameStart(c) or c == '\\') {
-            return ParseError.ExpectedSelector;
-        }
-
-        var ii: usize = 0;
-        while (ii < numPrefix) {
-            w.writeByte(prefix) catch return ParseError.WriteError;
-            ii += 1;
-        }
-        try parseName(p, w);
-    }
-
-    // parseName parses a name (which is like an identifier, but doesn't have
-    // extra restrictions on the first character).
-    fn parseName(p: *Parser, w: anytype) ParseError!void {
-        const sel = p.s;
-        const sel_len = sel.len;
-
-        var i = p.i;
-        var ok = false;
-
-        while (i < sel_len) {
-            const c = sel[i];
-
-            if (nameChar(c)) {
-                const start = i;
-                while (i < sel_len and nameChar(sel[i])) i += 1;
-                w.writeAll(sel[start..i]) catch return ParseError.WriteError;
-                ok = true;
-            } else if (c == '\\') {
-                p.i = i;
-                try p.parseEscape(w);
-                i = p.i;
-                ok = true;
-            } else if (c == 0) {
-                w.writeAll(REPLACEMENT_CHARACTER) catch return ParseError.WriteError;
-                i += 1;
-                if (i == sel_len) {
-                    ok = true;
-                }
-            } else {
-                // default:
-                break;
-            }
-        }
-
-        if (!ok) return ParseError.ExpectedName;
-        p.i = i;
-    }
-
-    // parseEscape parses a backslash escape.
-    // The returned string is owned by the caller.
-    fn parseEscape(p: *Parser, w: anytype) ParseError!void {
-        const sel = p.s;
-        const sel_len = sel.len;
-
-        if (sel_len < p.i + 2 or sel[p.i] != '\\') {
-            p.i += 1;
-            w.writeAll(REPLACEMENT_CHARACTER) catch return ParseError.WriteError;
-            return;
-        }
-
-        const start = p.i + 1;
-        const c = sel[start];
-
-        // unicode escape (hex)
-        if (ascii.isHex(c)) {
-            var i: usize = start;
-            while (i < start + 6 and i < sel_len and ascii.isHex(sel[i])) {
-                i += 1;
-            }
-
-            const v = std.fmt.parseUnsigned(u21, sel[start..i], 16) catch {
-                p.i = i;
-                w.writeAll(REPLACEMENT_CHARACTER) catch return ParseError.WriteError;
-                return;
-            };
-
-            if (sel_len >= i) {
-                if (sel_len > i) {
-                    switch (sel[i]) {
-                        '\r' => {
-                            i += 1;
-                            if (sel_len > i and sel[i] == '\n') i += 1;
-                        },
-                        ' ', '\t', '\n', std.ascii.control_code.ff => i += 1,
-                        else => {},
-                    }
-                }
-                p.i = i;
-                if (v == 0) {
-                    w.writeAll(REPLACEMENT_CHARACTER) catch return ParseError.WriteError;
-                    return;
-                }
-                var buf: [4]u8 = undefined;
-                const ln = std.unicode.utf8Encode(v, &buf) catch {
-                    w.writeAll(REPLACEMENT_CHARACTER) catch return ParseError.WriteError;
-                    return;
-                };
-                w.writeAll(buf[0..ln]) catch return ParseError.WriteError;
-                return;
-            }
-        }
-
-        // Return the literal character after the backslash.
-        p.i += 2;
-        w.writeByte(sel[start]) catch return ParseError.WriteError;
-    }
-
-    // parseIDSelector parses a selector that matches by id attribute.
-    fn parseIDSelector(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        if (p.i >= p.s.len) return ParseError.ExpectedIDSelector;
-        if (p.s[p.i] != '#') return ParseError.ExpectedIDSelector;
-
-        p.i += 1;
-
-        var buf = std.ArrayList(u8).init(alloc);
-        defer buf.deinit();
-
-        try p.parseName(buf.writer());
-        return .{ .id = try buf.toOwnedSlice() };
-    }
-
-    // parseClassSelector parses a selector that matches by class attribute.
-    fn parseClassSelector(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        if (p.i >= p.s.len) return ParseError.ExpectedClassSelector;
-        if (p.s[p.i] != '.') return ParseError.ExpectedClassSelector;
-
-        p.i += 1;
-
-        var buf = std.ArrayList(u8).init(alloc);
-        defer buf.deinit();
-
-        try p.parseIdentifier(buf.writer());
-        return .{ .class = try buf.toOwnedSlice() };
-    }
-
-    // parseAttributeSelector parses a selector that matches by attribute value.
-    fn parseAttributeSelector(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        if (p.i >= p.s.len) return ParseError.ExpectedAttributeSelector;
-        if (p.s[p.i] != '[') return ParseError.ExpectedAttributeSelector;
-
-        p.i += 1;
-        _ = p.skipWhitespace();
-
-        var buf = std.ArrayList(u8).init(alloc);
-        defer buf.deinit();
-
-        try p.parseIdentifier(buf.writer());
-        const key = try buf.toOwnedSlice();
-        errdefer alloc.free(key);
-
-        lowerstr(key);
-
-        _ = p.skipWhitespace();
-        if (p.i >= p.s.len) return ParseError.ExpectedAttributeSelector;
-        if (p.s[p.i] == ']') {
-            p.i += 1;
-            return .{ .attribute = .{ .key = key } };
-        }
-
-        if (p.i + 2 >= p.s.len) return ParseError.ExpectedAttributeSelector;
-
-        const op = try parseAttributeOP(p.s[p.i .. p.i + 2]);
-        p.i += op.len();
-
-        _ = p.skipWhitespace();
-        if (p.i >= p.s.len) return ParseError.ExpectedAttributeSelector;
-
-        buf.clearRetainingCapacity();
-        var is_val: bool = undefined;
-        if (op == .regexp) {
-            is_val = false;
-            try p.parseRegex(buf.writer());
-        } else {
-            is_val = true;
-            switch (p.s[p.i]) {
-                '\'', '"' => try p.parseString(buf.writer()),
-                else => try p.parseIdentifier(buf.writer()),
-            }
-        }
-
-        _ = p.skipWhitespace();
-        if (p.i >= p.s.len) return ParseError.ExpectedAttributeSelector;
-
-        // check if the attribute contains an ignore case flag
-        var ci = false;
-        if (p.s[p.i] == 'i' or p.s[p.i] == 'I') {
-            ci = true;
-            p.i += 1;
-        }
-
-        _ = p.skipWhitespace();
-        if (p.i >= p.s.len) return ParseError.ExpectedAttributeSelector;
-
-        if (p.s[p.i] != ']') return ParseError.InvalidAttributeSelector;
-        p.i += 1;
-
-        return .{ .attribute = .{
-            .key = key,
-            .val = if (is_val) try buf.toOwnedSlice() else null,
-            .regexp = if (!is_val) try buf.toOwnedSlice() else null,
-            .op = op,
-            .ci = ci,
-        } };
-    }
-
-    // parseString parses a single- or double-quoted string.
-    fn parseString(p: *Parser, writer: anytype) ParseError!void {
-        const sel = p.s;
-        const sel_len = sel.len;
-
-        var i = p.i;
-        if (sel_len < i + 2) return ParseError.ExpectedString;
-
-        const quote = sel[i];
-        i += 1;
-
-        loop: while (i < sel_len) {
-            switch (sel[i]) {
-                '\\' => {
-                    if (sel_len > i + 1) {
-                        const c = sel[i + 1];
-                        switch (c) {
-                            '\r' => {
-                                if (sel_len > i + 2 and sel[i + 2] == '\n') {
-                                    i += 3;
-                                    continue :loop;
-                                }
-                                i += 2;
-                                continue :loop;
-                            },
-                            '\n', std.ascii.control_code.ff => {
-                                i += 2;
-                                continue :loop;
-                            },
-                            else => {},
-                        }
-                    }
-                    p.i = i;
-                    try p.parseEscape(writer);
-                    i = p.i;
-                },
-                '\r', '\n', std.ascii.control_code.ff => return ParseError.InvalidString,
-                else => |c| {
-                    if (c == quote) break :loop;
-                    const start = i;
-                    while (i < sel_len) {
-                        const cc = sel[i];
-                        if (cc == quote or cc == '\\' or c == '\r' or c == '\n' or c == std.ascii.control_code.ff) break;
-                        i += 1;
-                    }
-                    writer.writeAll(sel[start..i]) catch return ParseError.WriteError;
-                },
-            }
-        }
-
-        if (i >= sel_len) return ParseError.InvalidString;
-
-        // Consume the final quote.
-        i += 1;
-        p.i = i;
-    }
-
-    // parseRegex parses a regular expression; the end is defined by encountering an
-    // unmatched closing ')' or ']' which is not consumed
-    fn parseRegex(p: *Parser, writer: anytype) ParseError!void {
-        var i = p.i;
-        if (p.s.len < i + 2) return ParseError.ExpectedRegexp;
-
-        // number of open parens or brackets;
-        // when it becomes negative, finished parsing regex
-        var open: isize = 0;
-
-        loop: while (i < p.s.len) {
-            switch (p.s[i]) {
-                '(', '[' => open += 1,
-                ')', ']' => {
-                    open -= 1;
-                    if (open < 0) break :loop;
-                },
-                else => {},
-            }
-            i += 1;
-        }
-
-        if (i >= p.s.len) return ParseError.InvalidRegexp;
-        writer.writeAll(p.s[p.i..i]) catch return ParseError.WriteError;
-        p.i = i;
-    }
-
-    // parsePseudoclassSelector parses a pseudoclass selector like :not(p) or a pseudo-element
-    // For backwards compatibility, both ':' and '::' prefix are allowed for pseudo-elements.
-    // https://drafts.csswg.org/selectors-3/#pseudo-elements
-    fn parsePseudoclassSelector(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        if (p.i >= p.s.len) return ParseError.ExpectedPseudoClassSelector;
-        if (p.s[p.i] != ':') return ParseError.ExpectedPseudoClassSelector;
-
-        p.i += 1;
-
-        var must_pseudo_elt: bool = false;
-        if (p.i >= p.s.len) return ParseError.EmptyPseudoClassSelector;
-        if (p.s[p.i] == ':') { // we found a pseudo-element
-            must_pseudo_elt = true;
-            p.i += 1;
-        }
-
-        var buf = std.ArrayList(u8).init(alloc);
-        defer buf.deinit();
-
-        try p.parseIdentifier(buf.writer());
-
-        const pseudo_class = try PseudoClass.parse(buf.items);
-
-        // reset the buffer to reuse it.
-        buf.clearRetainingCapacity();
-
-        if (must_pseudo_elt and !pseudo_class.isPseudoElement()) return ParseError.InvalidPseudoElement;
-
-        switch (pseudo_class) {
-            .not, .has, .haschild => {
-                if (!p.consumeParenthesis()) return ParseError.ExpectedParenthesis;
-
-                const sel = try p.parseSelectorGroup(alloc);
-                if (!p.consumeClosingParenthesis()) return ParseError.ExpectedParenthesisClose;
-
-                const s = try alloc.create(Selector);
-                errdefer alloc.destroy(s);
-                s.* = sel;
-
-                return .{ .pseudo_class_relative = .{ .pseudo_class = pseudo_class, .match = s } };
-            },
-            .contains, .containsown => {
-                if (!p.consumeParenthesis()) return ParseError.ExpectedParenthesis;
-                if (p.i == p.s.len) return ParseError.UnmatchParenthesis;
-
-                switch (p.s[p.i]) {
-                    '\'', '"' => try p.parseString(buf.writer()),
-                    else => try p.parseString(buf.writer()),
-                }
-
-                _ = p.skipWhitespace();
-                if (p.i >= p.s.len) return ParseError.InvalidPseudoClass;
-                if (!p.consumeClosingParenthesis()) return ParseError.ExpectedParenthesisClose;
-
-                const val = try buf.toOwnedSlice();
-                errdefer alloc.free(val);
-
-                lowerstr(val);
-
-                return .{ .pseudo_class_contains = .{ .own = pseudo_class == .containsown, .val = val } };
-            },
-            .matches, .matchesown => {
-                if (!p.consumeParenthesis()) return ParseError.ExpectedParenthesis;
-
-                try p.parseRegex(buf.writer());
-                if (p.i >= p.s.len) return ParseError.InvalidPseudoClassSelector;
-                if (!p.consumeClosingParenthesis()) return ParseError.ExpectedParenthesisClose;
-
-                return .{ .pseudo_class_regexp = .{ .own = pseudo_class == .matchesown, .regexp = try buf.toOwnedSlice() } };
-            },
-            .nth_child, .nth_last_child, .nth_of_type, .nth_last_of_type => {
-                if (!p.consumeParenthesis()) return ParseError.ExpectedParenthesis;
-                const nth = try p.parseNth(alloc);
-                if (!p.consumeClosingParenthesis()) return ParseError.ExpectedParenthesisClose;
-
-                const last = pseudo_class == .nth_last_child or pseudo_class == .nth_last_of_type;
-                const of_type = pseudo_class == .nth_of_type or pseudo_class == .nth_last_of_type;
-                return .{ .pseudo_class_nth = .{ .a = nth[0], .b = nth[1], .of_type = of_type, .last = last } };
-            },
-            .first_child => return .{ .pseudo_class_nth = .{ .a = 0, .b = 1, .of_type = false, .last = false } },
-            .last_child => return .{ .pseudo_class_nth = .{ .a = 0, .b = 1, .of_type = false, .last = true } },
-            .first_of_type => return .{ .pseudo_class_nth = .{ .a = 0, .b = 1, .of_type = true, .last = false } },
-            .last_of_type => return .{ .pseudo_class_nth = .{ .a = 0, .b = 1, .of_type = true, .last = true } },
-            .only_child => return .{ .pseudo_class_only_child = false },
-            .only_of_type => return .{ .pseudo_class_only_child = true },
-            .input, .empty, .root, .link => return .{ .pseudo_class = pseudo_class },
-            .enabled, .disabled, .checked => return .{ .pseudo_class = pseudo_class },
-            .lang => {
-                if (!p.consumeParenthesis()) return ParseError.ExpectedParenthesis;
-                if (p.i == p.s.len) return ParseError.UnmatchParenthesis;
-
-                try p.parseIdentifier(buf.writer());
-
-                _ = p.skipWhitespace();
-                if (p.i >= p.s.len) return ParseError.InvalidPseudoClass;
-                if (!p.consumeClosingParenthesis()) return ParseError.ExpectedParenthesisClose;
-
-                const val = try buf.toOwnedSlice();
-                errdefer alloc.free(val);
-                lowerstr(val);
-
-                return .{ .pseudo_class_lang = val };
-            },
-            .visited, .hover, .active, .focus, .target => {
-                // Not applicable in a static context: never match.
-                return .{ .never_match = pseudo_class };
-            },
-            .after, .backdrop, .before, .cue, .first_letter => return .{ .pseudo_element = pseudo_class },
-            .first_line, .grammar_error, .marker, .placeholder => return .{ .pseudo_element = pseudo_class },
-            .selection, .spelling_error => return .{ .pseudo_element = pseudo_class },
-            .modal => return .{ .pseudo_element = pseudo_class },
-        }
-    }
-
-    // consumeParenthesis consumes an opening parenthesis and any following
-    // whitespace. It returns true if there was actually a parenthesis to skip.
-    fn consumeParenthesis(p: *Parser) bool {
-        if (p.i < p.s.len and p.s[p.i] == '(') {
-            p.i += 1;
-            _ = p.skipWhitespace();
-            return true;
-        }
-        return false;
-    }
-
-    // parseSelectorGroup parses a group of selectors, separated by commas.
-    fn parseSelectorGroup(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        const s = try p.parseSelector(alloc);
-
-        var buf = std.ArrayList(Selector).init(alloc);
-        defer buf.deinit();
-
-        try buf.append(s);
-
-        while (p.i < p.s.len) {
-            if (p.s[p.i] != ',') break;
-            p.i += 1;
-            const ss = try p.parseSelector(alloc);
-            try buf.append(ss);
-        }
-
-        if (buf.items.len == 1) return buf.items[0];
-
-        return .{ .group = try buf.toOwnedSlice() };
-    }
-
-    // parseSelector parses a selector that may include combinators.
-    fn parseSelector(p: *Parser, alloc: std.mem.Allocator) ParseError!Selector {
-        _ = p.skipWhitespace();
-        var s = try p.parseSimpleSelectorSequence(alloc);
-
-        while (true) {
-            var combinator: Combinator = .empty;
-            if (p.skipWhitespace()) {
-                combinator = .descendant;
-            }
-            if (p.i >= p.s.len) {
-                return s;
-            }
-
-            switch (p.s[p.i]) {
-                '+', '>', '~' => {
-                    combinator = try Combinator.parse(p.s[p.i]);
-                    p.i += 1;
-                    _ = p.skipWhitespace();
-                },
-                // These characters can't begin a selector, but they can legally occur after one.
-                ',', ')' => {
-                    return s;
-                },
-                else => {},
-            }
-
-            if (combinator == .empty) {
-                return s;
-            }
-
-            const c = try p.parseSimpleSelectorSequence(alloc);
-
-            const first = try alloc.create(Selector);
-            errdefer alloc.destroy(first);
-            first.* = s;
-
-            const second = try alloc.create(Selector);
-            errdefer alloc.destroy(second);
-            second.* = c;
-
-            s = Selector{ .combined = .{ .first = first, .second = second, .combinator = combinator } };
-        }
-
-        return s;
-    }
-
-    // consumeClosingParenthesis consumes a closing parenthesis and any preceding
-    // whitespace. It returns true if there was actually a parenthesis to skip.
-    fn consumeClosingParenthesis(p: *Parser) bool {
-        const i = p.i;
-        _ = p.skipWhitespace();
-        if (p.i < p.s.len and p.s[p.i] == ')') {
-            p.i += 1;
-            return true;
-        }
-        p.i = i;
-        return false;
-    }
-
-    // parseInteger parses a  decimal integer.
-    fn parseInteger(p: *Parser) ParseError!isize {
-        var i = p.i;
-        const start = i;
-        while (i < p.s.len and '0' <= p.s[i] and p.s[i] <= '9') i += 1;
-        if (i == start) return ParseError.ExpectedInteger;
-        p.i = i;
-
-        return std.fmt.parseUnsigned(isize, p.s[start..i], 10) catch ParseError.ExpectedInteger;
-    }
-
-    fn parseNthReadN(p: *Parser, a: isize) ParseError![2]isize {
-        _ = p.skipWhitespace();
-        if (p.i >= p.s.len) return ParseError.ExpectedNthExpression;
-
-        return switch (p.s[p.i]) {
-            '+' => {
-                p.i += 1;
-                _ = p.skipWhitespace();
-                const b = try p.parseInteger();
-                return .{ a, b };
-            },
-            '-' => {
-                p.i += 1;
-                _ = p.skipWhitespace();
-                const b = try p.parseInteger();
-                return .{ a, -b };
-            },
-            else => .{ a, 0 },
-        };
-    }
-
-    fn parseNthReadA(p: *Parser, a: isize) ParseError![2]isize {
-        if (p.i >= p.s.len) return ParseError.ExpectedNthExpression;
-        return switch (p.s[p.i]) {
-            'n', 'N' => {
-                p.i += 1;
-                return p.parseNthReadN(a);
-            },
-            else => .{ 0, a },
-        };
-    }
-
-    fn parseNthNegativeA(p: *Parser) ParseError![2]isize {
-        if (p.i >= p.s.len) return ParseError.ExpectedNthExpression;
-        const c = p.s[p.i];
-        if (std.ascii.isDigit(c)) {
-            const a = try p.parseInteger() * -1;
-            return p.parseNthReadA(a);
-        }
-        if (c == 'n' or c == 'N') {
-            p.i += 1;
-            return p.parseNthReadN(-1);
-        }
-
-        return ParseError.InvalidNthExpression;
-    }
-
-    fn parseNthPositiveA(p: *Parser) ParseError![2]isize {
-        if (p.i >= p.s.len) return ParseError.ExpectedNthExpression;
-        const c = p.s[p.i];
-        if (std.ascii.isDigit(c)) {
-            const a = try p.parseInteger();
-            return p.parseNthReadA(a);
-        }
-        if (c == 'n' or c == 'N') {
-            p.i += 1;
-            return p.parseNthReadN(1);
-        }
-
-        return ParseError.InvalidNthExpression;
-    }
-
-    // parseNth parses the argument for :nth-child (normally of the form an+b).
-    fn parseNth(p: *Parser, alloc: std.mem.Allocator) ParseError![2]isize {
-        // initial state
-        if (p.i >= p.s.len) return ParseError.ExpectedNthExpression;
-        return switch (p.s[p.i]) {
-            '-' => {
-                p.i += 1;
-                return p.parseNthNegativeA();
-            },
-            '+' => {
-                p.i += 1;
-                return p.parseNthPositiveA();
-            },
-            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' => p.parseNthPositiveA(),
-            'n', 'N' => {
-                p.i += 1;
-                return p.parseNthReadN(1);
-            },
-            'o', 'O', 'e', 'E' => {
-                var buf = std.ArrayList(u8).init(alloc);
-                defer buf.deinit();
-
-                try p.parseName(buf.writer());
-
-                if (std.ascii.eqlIgnoreCase("odd", buf.items)) return .{ 2, 1 };
-                if (std.ascii.eqlIgnoreCase("even", buf.items)) return .{ 2, 0 };
-
-                return ParseError.InvalidNthExpression;
-            },
-            else => ParseError.InvalidNthExpression,
-        };
-    }
-};
-
-// nameStart returns whether c can be the first character of an identifier
-// (not counting an initial hyphen, or an escape sequence).
-fn nameStart(c: u8) bool {
-    return 'a' <= c and c <= 'z' or 'A' <= c and c <= 'Z' or c == '_' or c > 127;
-}
-
-// nameChar returns whether c can be a character within an identifier
-// (not counting an escape sequence).
-fn nameChar(c: u8) bool {
-    return 'a' <= c and c <= 'z' or 'A' <= c and c <= 'Z' or c == '_' or c > 127 or
-        c == '-' or '0' <= c and c <= '9';
-}
-
-fn lowerstr(str: []u8) void {
-    for (str, 0..) |c, i| {
-        str[i] = std.ascii.toLower(c);
-    }
-}
-
-// parseAttributeOP parses an AttributeOP from a string of 1 or 2 bytes.
-fn parseAttributeOP(s: []const u8) ParseError!AttributeOP {
-    if (s.len < 1 or s.len > 2) return ParseError.InvalidAttributeOperator;
-
-    // if the first sign is equal, we don't check anything else.
-    if (s[0] == '=') return .eql;
-
-    if (s.len != 2 or s[1] != '=') return ParseError.InvalidAttributeOperator;
-
-    return switch (s[0]) {
-        '=' => .eql,
-        '!' => .not_eql,
-        '~' => .one_of,
-        '|' => .prefix_hyphen,
-        '^' => .prefix,
-        '$' => .suffix,
-        '*' => .contains,
-        '#' => .regexp,
-        else => ParseError.InvalidAttributeOperator,
-    };
-}
-
-test "parser.skipWhitespace" {
-    const testcases = [_]struct {
-        s: []const u8,
-        i: usize,
-        r: bool,
-    }{
-        .{ .s = "", .i = 0, .r = false },
-        .{ .s = "foo", .i = 0, .r = false },
-        .{ .s = " ", .i = 1, .r = true },
-        .{ .s = " foo", .i = 1, .r = true },
-        .{ .s = "/* foo */ bar", .i = 10, .r = true },
-        .{ .s = "/* foo", .i = 0, .r = false },
-    };
-
-    for (testcases) |tc| {
-        var p = Parser{ .s = tc.s, .opts = .{} };
-        const res = p.skipWhitespace();
-        try std.testing.expectEqual(tc.r, res);
-        try std.testing.expectEqual(tc.i, p.i);
-    }
-}
-
-test "parser.parseIdentifier" {
-    const alloc = std.testing.allocator;
-
-    const testcases = [_]struct {
-        s: []const u8, // given value
-        exp: []const u8, // expected value
-        err: bool = false,
-    }{
-        .{ .s = "x", .exp = "x" },
-        .{ .s = "96", .exp = "", .err = true },
-        .{ .s = "-x", .exp = "-x" },
-        .{ .s = "r\\e9 sumé", .exp = "résumé" },
-        .{ .s = "r\\0000e9 sumé", .exp = "résumé" },
-        .{ .s = "r\\0000e9sumé", .exp = "résumé" },
-        .{ .s = "a\\\"b", .exp = "a\"b" },
-    };
-
-    var buf = std.ArrayList(u8).init(alloc);
-    defer buf.deinit();
-
-    for (testcases) |tc| {
-        buf.clearRetainingCapacity();
-
-        var p = Parser{ .s = tc.s, .opts = .{} };
-        p.parseIdentifier(buf.writer()) catch |e| {
-            // if error was expected, continue.
-            if (tc.err) continue;
-
-            std.debug.print("test case {s}\n", .{tc.s});
-            return e;
-        };
-        std.testing.expectEqualDeep(tc.exp, buf.items) catch |e| {
-            std.debug.print("test case {s} : {s}\n", .{ tc.s, buf.items });
-            return e;
-        };
-    }
-}
-
-test "parser.parseString" {
-    const alloc = std.testing.allocator;
-
-    const testcases = [_]struct {
-        s: []const u8, // given value
-        exp: []const u8, // expected value
-        err: bool = false,
-    }{
-        .{ .s = "\"x\"", .exp = "x" },
-        .{ .s = "'x'", .exp = "x" },
-        .{ .s = "'x", .exp = "", .err = true },
-        .{ .s = "'x\\\r\nx'", .exp = "xx" },
-        .{ .s = "\"r\\e9 sumé\"", .exp = "résumé" },
-        .{ .s = "\"r\\0000e9 sumé\"", .exp = "résumé" },
-        .{ .s = "\"r\\0000e9sumé\"", .exp = "résumé" },
-        .{ .s = "\"a\\\"b\"", .exp = "a\"b" },
-        .{ .s = "\"\\\n\"", .exp = "" },
-        .{ .s = "\"hello world\"", .exp = "hello world" },
-    };
-
-    var buf = std.ArrayList(u8).init(alloc);
-    defer buf.deinit();
-
-    for (testcases) |tc| {
-        buf.clearRetainingCapacity();
-
-        var p = Parser{ .s = tc.s, .opts = .{} };
-        p.parseString(buf.writer()) catch |e| {
-            // if error was expected, continue.
-            if (tc.err) continue;
-
-            std.debug.print("test case {s}\n", .{tc.s});
-            return e;
-        };
-        std.testing.expectEqualDeep(tc.exp, buf.items) catch |e| {
-            std.debug.print("test case {s} : {s}\n", .{ tc.s, buf.items });
-            return e;
-        };
-    }
-}

src/browser/css/selector.zig

@@ -1,769 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-pub const AttributeOP = enum {
-    eql, // =
-    not_eql, // !=
-    one_of, // ~=
-    prefix_hyphen, // |=
-    prefix, // ^=
-    suffix, // $=
-    contains, // *=
-    regexp, // #=
-
-    pub fn len(op: AttributeOP) u2 {
-        if (op == .eql) return 1;
-        return 2;
-    }
-};
-
-pub const Combinator = enum {
-    empty,
-    descendant, // space
-    child, // >
-    next_sibling, // +
-    subsequent_sibling, // ~
-
-    pub const Error = error{
-        InvalidCombinator,
-    };
-
-    pub fn parse(c: u8) Error!Combinator {
-        return switch (c) {
-            ' ' => .descendant,
-            '>' => .child,
-            '+' => .next_sibling,
-            '~' => .subsequent_sibling,
-            else => Error.InvalidCombinator,
-        };
-    }
-};
-
-pub const PseudoClass = enum {
-    not,
-    has,
-    haschild,
-    contains,
-    containsown,
-    matches,
-    matchesown,
-    nth_child,
-    nth_last_child,
-    nth_of_type,
-    nth_last_of_type,
-    first_child,
-    last_child,
-    first_of_type,
-    last_of_type,
-    only_child,
-    only_of_type,
-    input,
-    empty,
-    root,
-    link,
-    lang,
-    enabled,
-    disabled,
-    checked,
-    visited,
-    hover,
-    active,
-    focus,
-    target,
-    after,
-    backdrop,
-    before,
-    cue,
-    first_letter,
-    first_line,
-    grammar_error,
-    marker,
-    placeholder,
-    selection,
-    spelling_error,
-    modal,
-
-    pub const Error = error{
-        InvalidPseudoClass,
-    };
-
-    pub fn isPseudoElement(pc: PseudoClass) bool {
-        return switch (pc) {
-            .after, .backdrop, .before, .cue, .first_letter => true,
-            .first_line, .grammar_error, .marker, .placeholder => true,
-            .selection, .spelling_error => true,
-            else => false,
-        };
-    }
-
-    pub fn parse(s: []const u8) Error!PseudoClass {
-        if (std.ascii.eqlIgnoreCase(s, "not")) return .not;
-        if (std.ascii.eqlIgnoreCase(s, "has")) return .has;
-        if (std.ascii.eqlIgnoreCase(s, "haschild")) return .haschild;
-        if (std.ascii.eqlIgnoreCase(s, "contains")) return .contains;
-        if (std.ascii.eqlIgnoreCase(s, "containsown")) return .containsown;
-        if (std.ascii.eqlIgnoreCase(s, "matches")) return .matches;
-        if (std.ascii.eqlIgnoreCase(s, "matchesown")) return .matchesown;
-        if (std.ascii.eqlIgnoreCase(s, "nth-child")) return .nth_child;
-        if (std.ascii.eqlIgnoreCase(s, "nth-last-child")) return .nth_last_child;
-        if (std.ascii.eqlIgnoreCase(s, "nth-of-type")) return .nth_of_type;
-        if (std.ascii.eqlIgnoreCase(s, "nth-last-of-type")) return .nth_last_of_type;
-        if (std.ascii.eqlIgnoreCase(s, "first-child")) return .first_child;
-        if (std.ascii.eqlIgnoreCase(s, "last-child")) return .last_child;
-        if (std.ascii.eqlIgnoreCase(s, "first-of-type")) return .first_of_type;
-        if (std.ascii.eqlIgnoreCase(s, "last-of-type")) return .last_of_type;
-        if (std.ascii.eqlIgnoreCase(s, "only-child")) return .only_child;
-        if (std.ascii.eqlIgnoreCase(s, "only-of-type")) return .only_of_type;
-        if (std.ascii.eqlIgnoreCase(s, "input")) return .input;
-        if (std.ascii.eqlIgnoreCase(s, "empty")) return .empty;
-        if (std.ascii.eqlIgnoreCase(s, "root")) return .root;
-        if (std.ascii.eqlIgnoreCase(s, "link")) return .link;
-        if (std.ascii.eqlIgnoreCase(s, "lang")) return .lang;
-        if (std.ascii.eqlIgnoreCase(s, "enabled")) return .enabled;
-        if (std.ascii.eqlIgnoreCase(s, "disabled")) return .disabled;
-        if (std.ascii.eqlIgnoreCase(s, "checked")) return .checked;
-        if (std.ascii.eqlIgnoreCase(s, "visited")) return .visited;
-        if (std.ascii.eqlIgnoreCase(s, "hover")) return .hover;
-        if (std.ascii.eqlIgnoreCase(s, "active")) return .active;
-        if (std.ascii.eqlIgnoreCase(s, "focus")) return .focus;
-        if (std.ascii.eqlIgnoreCase(s, "target")) return .target;
-        if (std.ascii.eqlIgnoreCase(s, "after")) return .after;
-        if (std.ascii.eqlIgnoreCase(s, "backdrop")) return .backdrop;
-        if (std.ascii.eqlIgnoreCase(s, "before")) return .before;
-        if (std.ascii.eqlIgnoreCase(s, "cue")) return .cue;
-        if (std.ascii.eqlIgnoreCase(s, "first-letter")) return .first_letter;
-        if (std.ascii.eqlIgnoreCase(s, "first-line")) return .first_line;
-        if (std.ascii.eqlIgnoreCase(s, "grammar-error")) return .grammar_error;
-        if (std.ascii.eqlIgnoreCase(s, "marker")) return .marker;
-        if (std.ascii.eqlIgnoreCase(s, "placeholder")) return .placeholder;
-        if (std.ascii.eqlIgnoreCase(s, "selection")) return .selection;
-        if (std.ascii.eqlIgnoreCase(s, "spelling-error")) return .spelling_error;
-        if (std.ascii.eqlIgnoreCase(s, "modal")) return .modal;
-        return Error.InvalidPseudoClass;
-    }
-};
-
-pub const Selector = union(enum) {
-    pub const Error = error{
-        UnknownCombinedCombinator,
-        UnsupportedRelativePseudoClass,
-        UnsupportedContainsPseudoClass,
-        UnsupportedPseudoClass,
-        UnsupportedPseudoElement,
-        UnsupportedRegexpPseudoClass,
-        UnsupportedAttrRegexpOperator,
-    };
-
-    compound: struct {
-        selectors: []Selector,
-        pseudo_elt: ?PseudoClass,
-    },
-    group: []Selector,
-    tag: []const u8,
-    id: []const u8,
-    class: []const u8,
-    attribute: struct {
-        key: []const u8,
-        val: ?[]const u8 = null,
-        op: ?AttributeOP = null,
-        regexp: ?[]const u8 = null,
-        ci: bool = false,
-    },
-    combined: struct {
-        first: *Selector,
-        second: *Selector,
-        combinator: Combinator,
-    },
-
-    never_match: PseudoClass,
-
-    pseudo_class: PseudoClass,
-    pseudo_class_only_child: bool,
-    pseudo_class_lang: []const u8,
-    pseudo_class_relative: struct {
-        pseudo_class: PseudoClass,
-        match: *Selector,
-    },
-    pseudo_class_contains: struct {
-        own: bool,
-        val: []const u8,
-    },
-    pseudo_class_regexp: struct {
-        own: bool,
-        regexp: []const u8,
-    },
-    pseudo_class_nth: struct {
-        a: isize,
-        b: isize,
-        of_type: bool,
-        last: bool,
-    },
-    pseudo_element: PseudoClass,
-
-    // returns true if s is a whitespace-separated list that includes val.
-    fn word(haystack: []const u8, needle: []const u8, ci: bool) bool {
-        if (haystack.len == 0) return false;
-        var it = std.mem.splitAny(u8, haystack, " \t\r\n"); // TODO add \f
-        while (it.next()) |part| {
-            if (eql(part, needle, ci)) return true;
-        }
-        return false;
-    }
-
-    fn eql(a: []const u8, b: []const u8, ci: bool) bool {
-        if (ci) return std.ascii.eqlIgnoreCase(a, b);
-        return std.mem.eql(u8, a, b);
-    }
-
-    fn starts(haystack: []const u8, needle: []const u8, ci: bool) bool {
-        if (ci) return std.ascii.startsWithIgnoreCase(haystack, needle);
-        return std.mem.startsWith(u8, haystack, needle);
-    }
-
-    fn ends(haystack: []const u8, needle: []const u8, ci: bool) bool {
-        if (ci) return std.ascii.endsWithIgnoreCase(haystack, needle);
-        return std.mem.endsWith(u8, haystack, needle);
-    }
-
-    fn contains(haystack: []const u8, needle: []const u8, ci: bool) bool {
-        if (ci) return std.ascii.indexOfIgnoreCase(haystack, needle) != null;
-        return std.mem.indexOf(u8, haystack, needle) != null;
-    }
-
-    // match returns true if the node matches the selector query.
-    pub fn match(s: Selector, n: anytype) !bool {
-        return switch (s) {
-            .tag => |v| n.isElement() and std.ascii.eqlIgnoreCase(v, try n.tag()),
-            .id => |v| return n.isElement() and std.mem.eql(u8, v, try n.attr("id") orelse return false),
-            .class => |v| return n.isElement() and word(try n.attr("class") orelse return false, v, false),
-            .group => |v| {
-                for (v) |sel| {
-                    if (try sel.match(n)) return true;
-                }
-                return false;
-            },
-            .compound => |v| {
-                if (v.selectors.len == 0) return n.isElement();
-
-                for (v.selectors) |sel| {
-                    if (!try sel.match(n)) return false;
-                }
-                return true;
-            },
-            .combined => |v| {
-                return switch (v.combinator) {
-                    .empty => try v.first.match(n),
-                    .descendant => {
-                        if (!try v.second.match(n)) return false;
-
-                        // The first must match a ascendent.
-                        var p = try n.parent();
-                        while (p != null) {
-                            if (try v.first.match(p.?)) {
-                                return true;
-                            }
-                            p = try p.?.parent();
-                        }
-
-                        return false;
-                    },
-                    .child => {
-                        const p = try n.parent();
-                        if (p == null) return false;
-
-                        return try v.second.match(n) and try v.first.match(p.?);
-                    },
-                    .next_sibling => {
-                        if (!try v.second.match(n)) return false;
-                        var c = try n.prevSibling();
-                        while (c != null) {
-                            if (c.?.isText() or c.?.isComment()) {
-                                c = try c.?.prevSibling();
-                                continue;
-                            }
-                            return try v.first.match(c.?);
-                        }
-                        return false;
-                    },
-                    .subsequent_sibling => {
-                        if (!try v.second.match(n)) return false;
-
-                        var c = try n.prevSibling();
-                        while (c != null) {
-                            if (try v.first.match(c.?)) return true;
-                            c = try c.?.prevSibling();
-                        }
-                        return false;
-                    },
-                };
-            },
-            .attribute => |v| {
-                var attr = try n.attr(v.key);
-
-                if (v.op == null) return attr != null;
-                if (v.val == null or v.val.?.len == 0) return false;
-
-                const val = v.val.?;
-
-                return switch (v.op.?) {
-                    .eql => attr != null and eql(attr.?, val, v.ci),
-                    .not_eql => attr == null or !eql(attr.?, val, v.ci),
-                    .one_of => attr != null and word(attr.?, val, v.ci),
-                    .prefix => {
-                        if (attr == null) return false;
-                        attr.? = std.mem.trim(u8, attr.?, &std.ascii.whitespace);
-
-                        if (attr.?.len == 0) return false;
-
-                        return starts(attr.?, val, v.ci);
-                    },
-                    .suffix => {
-                        if (attr == null) return false;
-                        attr.? = std.mem.trim(u8, attr.?, &std.ascii.whitespace);
-
-                        if (attr.?.len == 0) return false;
-
-                        return ends(attr.?, val, v.ci);
-                    },
-                    .contains => {
-                        if (attr == null) return false;
-                        attr.? = std.mem.trim(u8, attr.?, &std.ascii.whitespace);
-
-                        if (attr.?.len == 0) return false;
-
-                        return contains(attr.?, val, v.ci);
-                    },
-                    .prefix_hyphen => {
-                        if (attr == null) return false;
-                        if (eql(attr.?, val, v.ci)) return true;
-
-                        if (attr.?.len <= val.len) return false;
-
-                        if (!starts(attr.?, val, v.ci)) return false;
-
-                        return attr.?[val.len] == '-';
-                    },
-                    .regexp => return Error.UnsupportedAttrRegexpOperator, // TODO handle regexp attribute operator.
-                };
-            },
-            .never_match => return false,
-            .pseudo_class_relative => |v| {
-                if (!n.isElement()) return false;
-
-                return switch (v.pseudo_class) {
-                    .not => !try v.match.match(n),
-                    .has => try hasDescendantMatch(v.match, n),
-                    .haschild => try hasChildMatch(v.match, n),
-                    else => Error.UnsupportedRelativePseudoClass,
-                };
-            },
-            .pseudo_class_contains => return Error.UnsupportedContainsPseudoClass, // TODO, need mem allocation.
-            .pseudo_class_regexp => return Error.UnsupportedRegexpPseudoClass, // TODO need mem allocation.
-            .pseudo_class_nth => |v| {
-                if (v.a == 0) {
-                    if (v.last) {
-                        return simpleNthLastChildMatch(v.b, v.of_type, n);
-                    }
-                    return simpleNthChildMatch(v.b, v.of_type, n);
-                }
-                return nthChildMatch(v.a, v.b, v.last, v.of_type, n);
-            },
-            .pseudo_class => |v| {
-                return switch (v) {
-                    .input => {
-                        if (!n.isElement()) return false;
-                        const ntag = try n.tag();
-
-                        return std.ascii.eqlIgnoreCase("input", ntag) or
-                            std.ascii.eqlIgnoreCase("select", ntag) or
-                            std.ascii.eqlIgnoreCase("button", ntag) or
-                            std.ascii.eqlIgnoreCase("textarea", ntag);
-                    },
-                    .empty => {
-                        if (!n.isElement()) return false;
-
-                        var c = try n.firstChild();
-                        while (c != null) {
-                            if (c.?.isElement()) return false;
-
-                            if (c.?.isText()) {
-                                if (try c.?.isEmptyText()) continue;
-                                return false;
-                            }
-
-                            c = try c.?.nextSibling();
-                        }
-
-                        return true;
-                    },
-                    .root => {
-                        if (!n.isElement()) return false;
-
-                        const p = try n.parent();
-                        return (p != null and p.?.isDocument());
-                    },
-                    .link => {
-                        const ntag = try n.tag();
-
-                        return std.ascii.eqlIgnoreCase("a", ntag) or
-                            std.ascii.eqlIgnoreCase("area", ntag) or
-                            std.ascii.eqlIgnoreCase("link", ntag);
-                    },
-                    .enabled => {
-                        if (!n.isElement()) return false;
-
-                        const ntag = try n.tag();
-
-                        if (std.ascii.eqlIgnoreCase("a", ntag) or
-                            std.ascii.eqlIgnoreCase("area", ntag) or
-                            std.ascii.eqlIgnoreCase("link", ntag))
-                        {
-                            return try n.attr("href") != null;
-                        }
-
-                        if (std.ascii.eqlIgnoreCase("optgroup", ntag) or
-                            std.ascii.eqlIgnoreCase("menuitem", ntag) or
-                            std.ascii.eqlIgnoreCase("fieldset", ntag))
-                        {
-                            return try n.attr("disabled") == null;
-                        }
-
-                        if (std.ascii.eqlIgnoreCase("input", ntag) or
-                            std.ascii.eqlIgnoreCase("button", ntag) or
-                            std.ascii.eqlIgnoreCase("select", ntag) or
-                            std.ascii.eqlIgnoreCase("textarea", ntag) or
-                            std.ascii.eqlIgnoreCase("option", ntag))
-                        {
-                            return try n.attr("disabled") == null and
-                                !try inDisabledFieldset(n);
-                        }
-
-                        return false;
-                    },
-                    .disabled => {
-                        if (!n.isElement()) return false;
-
-                        const ntag = try n.tag();
-
-                        if (std.ascii.eqlIgnoreCase("optgroup", ntag) or
-                            std.ascii.eqlIgnoreCase("menuitem", ntag) or
-                            std.ascii.eqlIgnoreCase("fieldset", ntag))
-                        {
-                            return try n.attr("disabled") != null;
-                        }
-
-                        if (std.ascii.eqlIgnoreCase("input", ntag) or
-                            std.ascii.eqlIgnoreCase("button", ntag) or
-                            std.ascii.eqlIgnoreCase("select", ntag) or
-                            std.ascii.eqlIgnoreCase("textarea", ntag) or
-                            std.ascii.eqlIgnoreCase("option", ntag))
-                        {
-                            return try n.attr("disabled") != null or
-                                try inDisabledFieldset(n);
-                        }
-
-                        return false;
-                    },
-                    .checked => {
-                        if (!n.isElement()) return false;
-
-                        const ntag = try n.tag();
-
-                        if (std.ascii.eqlIgnoreCase("intput", ntag)) {
-                            const ntype = try n.attr("type");
-                            if (ntype == null) return false;
-
-                            if (std.mem.eql(u8, ntype.?, "checkbox") or
-                                std.mem.eql(u8, ntype.?, "radio"))
-                            {
-                                return try n.attr("checked") != null;
-                            }
-
-                            return false;
-                        }
-                        if (std.ascii.eqlIgnoreCase("option", ntag)) {
-                            return try n.attr("selected") != null;
-                        }
-
-                        return false;
-                    },
-                    .visited => return false,
-                    .hover => return false,
-                    .active => return false,
-                    .focus => return false,
-                    // TODO implement using the url fragment.
-                    // see https://developer.mozilla.org/en-US/docs/Web/CSS/:target
-                    .target => return false,
-
-                    // all others pseudo class are handled by specialized
-                    // pseudo_class_X selectors.
-                    else => return Error.UnsupportedPseudoClass,
-                };
-            },
-            .pseudo_class_only_child => |v| onlyChildMatch(v, n),
-            .pseudo_class_lang => |v| langMatch(v, n),
-
-            // pseudo elements doesn't make sense in the matching process.
-            // > A CSS pseudo-element is a keyword added to a selector that
-            // > lets you style a specific part of the selected element(s).
-            // https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-elements
-            .pseudo_element => return Error.UnsupportedPseudoElement,
-        };
-    }
-
-    fn hasLegendInPreviousSiblings(n: anytype) anyerror!bool {
-        var c = try n.prevSibling();
-        while (c != null) {
-            const ctag = try c.?.tag();
-            if (std.ascii.eqlIgnoreCase("legend", ctag)) return true;
-            c = try c.?.prevSibling();
-        }
-        return false;
-    }
-
-    fn inDisabledFieldset(n: anytype) anyerror!bool {
-        const p = try n.parent();
-        if (p == null) return false;
-
-        const ntag = try n.tag();
-        const ptag = try p.?.tag();
-
-        if (std.ascii.eqlIgnoreCase("fieldset", ptag) and
-            try p.?.attr("disabled") != null and
-            (!std.ascii.eqlIgnoreCase("legend", ntag) or try hasLegendInPreviousSiblings(n)))
-        {
-            return true;
-        }
-
-        // TODO should we handle legend like cascadia does?
-        // The implemention below looks suspicious, I didn't find a test case
-        // in cascadia and I didn't find the reference about legend in the
-        // specs. For now I do prefer ignoring this part.
-        //
-        // ```
-        // (n.DataAtom != atom.Legend || hasLegendInPreviousSiblings(n)) {
-        // ```
-        // https://github.com/andybalholm/cascadia/blob/master/pseudo_classes.go#L434
-
-        return try inDisabledFieldset(p.?);
-    }
-
-    fn langMatch(lang: []const u8, n: anytype) anyerror!bool {
-        if (try n.attr("lang")) |own| {
-            if (std.mem.eql(u8, own, lang)) return true;
-
-            // check if the lang attr starts with lang+'-'
-            if (std.mem.startsWith(u8, own, lang)) {
-                if (own.len > lang.len and own[lang.len] == '-') return true;
-            }
-        }
-
-        // if the tag doesn't match, try the parent.
-        const p = try n.parent();
-        if (p == null) return false;
-
-        return langMatch(lang, p.?);
-    }
-
-    // onlyChildMatch implements :only-child
-    //  If `ofType` is true, it implements :only-of-type instead.
-    fn onlyChildMatch(of_type: bool, n: anytype) anyerror!bool {
-        if (!n.isElement()) return false;
-
-        const p = try n.parent();
-        if (p == null) return false;
-
-        const ntag = try n.tag();
-
-        var count: usize = 0;
-        var c = try p.?.firstChild();
-        // loop hover all n siblings.
-        while (c != null) {
-            // ignore non elements or others tags if of-type is true.
-            if (!c.?.isElement() or (of_type and !std.mem.eql(u8, ntag, try c.?.tag()))) {
-                c = try c.?.nextSibling();
-                continue;
-            }
-
-            count += 1;
-            if (count > 1) return false;
-
-            c = try c.?.nextSibling();
-        }
-
-        return count == 1;
-    }
-
-    // simpleNthLastChildMatch implements :nth-last-child(b).
-    // If ofType is true, implements :nth-last-of-type instead.
-    fn simpleNthLastChildMatch(b: isize, of_type: bool, n: anytype) anyerror!bool {
-        if (!n.isElement()) return false;
-
-        const p = try n.parent();
-        if (p == null) return false;
-
-        const ntag = try n.tag();
-
-        var count: isize = 0;
-        var c = try p.?.lastChild();
-        // loop hover all n siblings.
-        while (c != null) {
-            // ignore non elements or others tags if of-type is true.
-            if (!c.?.isElement() or (of_type and !std.mem.eql(u8, ntag, try c.?.tag()))) {
-                c = try c.?.prevSibling();
-                continue;
-            }
-
-            count += 1;
-
-            if (n.eql(c.?)) return count == b;
-            if (count >= b) return false;
-
-            c = try c.?.prevSibling();
-        }
-
-        return false;
-    }
-
-    // simpleNthChildMatch implements :nth-child(b).
-    // If ofType is true, implements :nth-of-type instead.
-    fn simpleNthChildMatch(b: isize, of_type: bool, n: anytype) anyerror!bool {
-        if (!n.isElement()) return false;
-
-        const p = try n.parent();
-        if (p == null) return false;
-
-        const ntag = try n.tag();
-
-        var count: isize = 0;
-        var c = try p.?.firstChild();
-        // loop hover all n siblings.
-        while (c != null) {
-            // ignore non elements or others tags if of-type is true.
-            if (!c.?.isElement() or (of_type and !std.mem.eql(u8, ntag, try c.?.tag()))) {
-                c = try c.?.nextSibling();
-                continue;
-            }
-
-            count += 1;
-
-            if (n.eql(c.?)) return count == b;
-            if (count >= b) return false;
-
-            c = try c.?.nextSibling();
-        }
-
-        return false;
-    }
-
-    // nthChildMatch implements :nth-child(an+b).
-    // If last is true, implements :nth-last-child instead.
-    // If ofType is true, implements :nth-of-type instead.
-    fn nthChildMatch(a: isize, b: isize, last: bool, of_type: bool, n: anytype) anyerror!bool {
-        if (!n.isElement()) return false;
-
-        const p = try n.parent();
-        if (p == null) return false;
-
-        const ntag = try n.tag();
-
-        var i: isize = -1;
-        var count: isize = 0;
-        var c = try p.?.firstChild();
-        // loop hover all n siblings.
-        while (c != null) {
-            // ignore non elements or others tags if of-type is true.
-            if (!c.?.isElement() or (of_type and !std.mem.eql(u8, ntag, try c.?.tag()))) {
-                c = try c.?.nextSibling();
-                continue;
-            }
-            count += 1;
-
-            if (n.eql(c.?)) {
-                i = count;
-                if (!last) break;
-            }
-
-            c = try c.?.nextSibling();
-        }
-
-        if (i == -1) return false;
-
-        if (last) i = count - i + 1;
-
-        i -= b;
-        if (a == 0) return i == 0;
-        return @mod(i, a) == 0 and @divTrunc(i, a) >= 0;
-    }
-
-    fn hasDescendantMatch(s: *const Selector, n: anytype) anyerror!bool {
-        var c = try n.firstChild();
-        while (c != null) {
-            if (try s.match(c.?)) return true;
-            if (c.?.isElement() and try hasDescendantMatch(s, c.?)) return true;
-            c = try c.?.nextSibling();
-        }
-
-        return false;
-    }
-
-    fn hasChildMatch(s: *const Selector, n: anytype) anyerror!bool {
-        var c = try n.firstChild();
-        while (c != null) {
-            if (try s.match(c.?)) return true;
-            c = try c.?.nextSibling();
-        }
-
-        return false;
-    }
-
-    pub fn deinit(sel: Selector, alloc: std.mem.Allocator) void {
-        switch (sel) {
-            .group => |v| {
-                for (v) |vv| vv.deinit(alloc);
-                alloc.free(v);
-            },
-            .compound => |v| {
-                for (v.selectors) |vv| vv.deinit(alloc);
-                alloc.free(v.selectors);
-            },
-            .tag, .id, .class, .pseudo_class_lang => |v| alloc.free(v),
-            .attribute => |att| {
-                alloc.free(att.key);
-                if (att.val) |v| alloc.free(v);
-                if (att.regexp) |v| alloc.free(v);
-            },
-            .combined => |c| {
-                c.first.deinit(alloc);
-                alloc.destroy(c.first);
-                c.second.deinit(alloc);
-                alloc.destroy(c.second);
-            },
-            .pseudo_class_relative => |v| {
-                v.match.deinit(alloc);
-                alloc.destroy(v.match);
-            },
-            .pseudo_class_contains => |v| alloc.free(v.val),
-            .pseudo_class_regexp => |v| alloc.free(v.regexp),
-            .pseudo_class, .pseudo_element, .never_match => {},
-            .pseudo_class_nth, .pseudo_class_only_child => {},
-        }
-    }
-};

src/browser/cssom/css_parser.zig

@@ -1,291 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-
-const CSSConstants = struct {
-    const IMPORTANT = "!important";
-    const URL_PREFIX = "url(";
-};
-
-pub const CSSParserState = enum {
-    seek_name,
-    in_name,
-    seek_colon,
-    seek_value,
-    in_value,
-    in_quoted_value,
-    in_single_quoted_value,
-    in_url,
-    in_important,
-};
-
-pub const CSSDeclaration = struct {
-    name: []const u8,
-    value: []const u8,
-    is_important: bool,
-};
-
-pub const CSSParser = struct {
-    state: CSSParserState,
-    name_start: usize,
-    name_end: usize,
-    value_start: usize,
-    position: usize,
-    paren_depth: usize,
-    escape_next: bool,
-
-    pub fn init() CSSParser {
-        return .{
-            .state = .seek_name,
-            .name_start = 0,
-            .name_end = 0,
-            .value_start = 0,
-            .position = 0,
-            .paren_depth = 0,
-            .escape_next = false,
-        };
-    }
-
-    pub fn parseDeclarations(arena: Allocator, text: []const u8) ![]CSSDeclaration {
-        var parser = init();
-        var declarations: std.ArrayListUnmanaged(CSSDeclaration) = .empty;
-
-        while (parser.position < text.len) {
-            const c = text[parser.position];
-
-            switch (parser.state) {
-                .seek_name => {
-                    if (!std.ascii.isWhitespace(c)) {
-                        parser.name_start = parser.position;
-                        parser.state = .in_name;
-                        continue;
-                    }
-                },
-                .in_name => {
-                    if (c == ':') {
-                        parser.name_end = parser.position;
-                        parser.state = .seek_value;
-                    } else if (std.ascii.isWhitespace(c)) {
-                        parser.name_end = parser.position;
-                        parser.state = .seek_colon;
-                    }
-                },
-                .seek_colon => {
-                    if (c == ':') {
-                        parser.state = .seek_value;
-                    } else if (!std.ascii.isWhitespace(c)) {
-                        parser.state = .seek_name;
-                        continue;
-                    }
-                },
-                .seek_value => {
-                    if (!std.ascii.isWhitespace(c)) {
-                        parser.value_start = parser.position;
-                        if (c == '"') {
-                            parser.state = .in_quoted_value;
-                        } else if (c == '\'') {
-                            parser.state = .in_single_quoted_value;
-                        } else if (c == 'u' and parser.position + CSSConstants.URL_PREFIX.len <= text.len and std.mem.startsWith(u8, text[parser.position..], CSSConstants.URL_PREFIX)) {
-                            parser.state = .in_url;
-                            parser.paren_depth = 1;
-                            parser.position += 3;
-                        } else {
-                            parser.state = .in_value;
-                            continue;
-                        }
-                    }
-                },
-                .in_value => {
-                    if (parser.escape_next) {
-                        parser.escape_next = false;
-                    } else if (c == '\\') {
-                        parser.escape_next = true;
-                    } else if (c == '(') {
-                        parser.paren_depth += 1;
-                    } else if (c == ')' and parser.paren_depth > 0) {
-                        parser.paren_depth -= 1;
-                    } else if (c == ';' and parser.paren_depth == 0) {
-                        try parser.finishDeclaration(arena, &declarations, text);
-                        parser.state = .seek_name;
-                    }
-                },
-                .in_quoted_value => {
-                    if (parser.escape_next) {
-                        parser.escape_next = false;
-                    } else if (c == '\\') {
-                        parser.escape_next = true;
-                    } else if (c == '"') {
-                        parser.state = .in_value;
-                    }
-                },
-                .in_single_quoted_value => {
-                    if (parser.escape_next) {
-                        parser.escape_next = false;
-                    } else if (c == '\\') {
-                        parser.escape_next = true;
-                    } else if (c == '\'') {
-                        parser.state = .in_value;
-                    }
-                },
-                .in_url => {
-                    if (parser.escape_next) {
-                        parser.escape_next = false;
-                    } else if (c == '\\') {
-                        parser.escape_next = true;
-                    } else if (c == '(') {
-                        parser.paren_depth += 1;
-                    } else if (c == ')') {
-                        parser.paren_depth -= 1;
-                        if (parser.paren_depth == 0) {
-                            parser.state = .in_value;
-                        }
-                    }
-                },
-                .in_important => {},
-            }
-
-            parser.position += 1;
-        }
-
-        try parser.finalize(arena, &declarations, text);
-
-        return declarations.items;
-    }
-
-    fn finishDeclaration(self: *CSSParser, arena: Allocator, declarations: *std.ArrayListUnmanaged(CSSDeclaration), text: []const u8) !void {
-        const name = std.mem.trim(u8, text[self.name_start..self.name_end], &std.ascii.whitespace);
-        if (name.len == 0) return;
-
-        const raw_value = text[self.value_start..self.position];
-        const value = std.mem.trim(u8, raw_value, &std.ascii.whitespace);
-
-        var final_value = value;
-        var is_important = false;
-
-        if (std.mem.endsWith(u8, value, CSSConstants.IMPORTANT)) {
-            is_important = true;
-            final_value = std.mem.trimRight(u8, value[0 .. value.len - CSSConstants.IMPORTANT.len], &std.ascii.whitespace);
-        }
-
-        try declarations.append(arena, .{
-            .name = name,
-            .value = final_value,
-            .is_important = is_important,
-        });
-    }
-
-    fn finalize(self: *CSSParser, arena: Allocator, declarations: *std.ArrayListUnmanaged(CSSDeclaration), text: []const u8) !void {
-        if (self.state != .in_value) {
-            return;
-        }
-        return self.finishDeclaration(arena, declarations, text);
-    }
-};
-
-const testing = @import("../../testing.zig");
-
-test "CSSParser - Simple property" {
-    defer testing.reset();
-
-    const text = "color: red;";
-    const allocator = testing.arena_allocator;
-
-    const declarations = try CSSParser.parseDeclarations(allocator, text);
-
-    try testing.expectEqual(1, declarations.len);
-    try testing.expectEqual("color", declarations[0].name);
-    try testing.expectEqual("red", declarations[0].value);
-    try testing.expectEqual(false, declarations[0].is_important);
-}
-
-test "CSSParser - Property with !important" {
-    defer testing.reset();
-    const text = "margin: 10px !important;";
-    const allocator = testing.arena_allocator;
-
-    const declarations = try CSSParser.parseDeclarations(allocator, text);
-
-    try testing.expectEqual(1, declarations.len);
-    try testing.expectEqual("margin", declarations[0].name);
-    try testing.expectEqual("10px", declarations[0].value);
-    try testing.expectEqual(true, declarations[0].is_important);
-}
-
-test "CSSParser - Multiple properties" {
-    defer testing.reset();
-    const text = "color: red; font-size: 12px; margin: 5px !important;";
-    const allocator = testing.arena_allocator;
-
-    const declarations = try CSSParser.parseDeclarations(allocator, text);
-
-    try testing.expect(declarations.len == 3);
-
-    try testing.expectEqual("color", declarations[0].name);
-    try testing.expectEqual("red", declarations[0].value);
-    try testing.expectEqual(false, declarations[0].is_important);
-
-    try testing.expectEqual("font-size", declarations[1].name);
-    try testing.expectEqual("12px", declarations[1].value);
-    try testing.expectEqual(false, declarations[1].is_important);
-
-    try testing.expectEqual("margin", declarations[2].name);
-    try testing.expectEqual("5px", declarations[2].value);
-    try testing.expectEqual(true, declarations[2].is_important);
-}
-
-test "CSSParser - Quoted value with semicolon" {
-    defer testing.reset();
-    const text = "content: \"Hello; world!\";";
-    const allocator = testing.arena_allocator;
-
-    const declarations = try CSSParser.parseDeclarations(allocator, text);
-
-    try testing.expectEqual(1, declarations.len);
-    try testing.expectEqual("content", declarations[0].name);
-    try testing.expectEqual("\"Hello; world!\"", declarations[0].value);
-    try testing.expectEqual(false, declarations[0].is_important);
-}
-
-test "CSSParser - URL value" {
-    defer testing.reset();
-    const text = "background-image: url(\"test.png\");";
-    const allocator = testing.arena_allocator;
-
-    const declarations = try CSSParser.parseDeclarations(allocator, text);
-
-    try testing.expectEqual(1, declarations.len);
-    try testing.expectEqual("background-image", declarations[0].name);
-    try testing.expectEqual("url(\"test.png\")", declarations[0].value);
-    try testing.expectEqual(false, declarations[0].is_important);
-}
-
-test "CSSParser - Whitespace handling" {
-    defer testing.reset();
-    const text = "  color  :  purple  ;  margin  :  10px  ;  ";
-    const allocator = testing.arena_allocator;
-
-    const declarations = try CSSParser.parseDeclarations(allocator, text);
-
-    try testing.expectEqual(2, declarations.len);
-    try testing.expectEqual("color", declarations[0].name);
-    try testing.expectEqual("purple", declarations[0].value);
-    try testing.expectEqual("margin", declarations[1].name);
-    try testing.expectEqual("10px", declarations[1].value);
-}

src/browser/cssom/css_style_declaration.zig

@@ -1,247 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const CSSParser = @import("./css_parser.zig").CSSParser;
-const CSSValueAnalyzer = @import("./css_value_analyzer.zig").CSSValueAnalyzer;
-const Page = @import("../page.zig").Page;
-
-pub const Interfaces = .{
-    CSSStyleDeclaration,
-    CSSRule,
-};
-
-const CSSRule = struct {};
-
-pub const CSSStyleDeclaration = struct {
-    store: std.StringHashMapUnmanaged(Property),
-    order: std.ArrayListUnmanaged([]const u8),
-
-    pub const empty: CSSStyleDeclaration = .{
-        .store = .empty,
-        .order = .empty,
-    };
-
-    const Property = struct {
-        value: []const u8,
-        priority: bool,
-    };
-
-    pub fn get_cssFloat(self: *const CSSStyleDeclaration) []const u8 {
-        return self._getPropertyValue("float");
-    }
-
-    pub fn set_cssFloat(self: *CSSStyleDeclaration, value: ?[]const u8, page: *Page) !void {
-        const final_value = value orelse "";
-        return self._setProperty("float", final_value, null, page);
-    }
-
-    pub fn get_cssText(self: *const CSSStyleDeclaration, page: *Page) ![]const u8 {
-        var buffer: std.ArrayListUnmanaged(u8) = .empty;
-        const writer = buffer.writer(page.call_arena);
-        for (self.order.items) |name| {
-            const prop = self.store.get(name).?;
-            const escaped = try CSSValueAnalyzer.escapeCSSValue(page.call_arena, prop.value);
-            try writer.print("{s}: {s}", .{ name, escaped });
-            if (prop.priority) try writer.writeAll(" !important");
-            try writer.writeAll("; ");
-        }
-        return buffer.items;
-    }
-
-    // TODO Propagate also upward to parent node
-    pub fn set_cssText(self: *CSSStyleDeclaration, text: []const u8, page: *Page) !void {
-        self.store.clearRetainingCapacity();
-        self.order.clearRetainingCapacity();
-
-        // call_arena is safe here, because _setProperty will dupe the name
-        // using the page's longer-living arena.
-        const declarations = try CSSParser.parseDeclarations(page.call_arena, text);
-
-        for (declarations) |decl| {
-            if (!CSSValueAnalyzer.isValidPropertyName(decl.name)) continue;
-            const priority: ?[]const u8 = if (decl.is_important) "important" else null;
-            try self._setProperty(decl.name, decl.value, priority, page);
-        }
-    }
-
-    pub fn get_length(self: *const CSSStyleDeclaration) usize {
-        return self.order.items.len;
-    }
-
-    pub fn get_parentRule(_: *const CSSStyleDeclaration) ?CSSRule {
-        return null;
-    }
-
-    pub fn _getPropertyPriority(self: *const CSSStyleDeclaration, name: []const u8) []const u8 {
-        return if (self.store.get(name)) |prop| (if (prop.priority) "important" else "") else "";
-    }
-
-    // TODO should handle properly shorthand properties and canonical forms
-    pub fn _getPropertyValue(self: *const CSSStyleDeclaration, name: []const u8) []const u8 {
-        if (self.store.get(name)) |prop| {
-            return prop.value;
-        }
-
-        // default to everything being visible (unless it's been explicitly set)
-        if (std.mem.eql(u8, name, "visibility")) {
-            return "visible";
-        }
-
-        return "";
-    }
-
-    pub fn _item(self: *const CSSStyleDeclaration, index: usize) []const u8 {
-        return if (index < self.order.items.len) self.order.items[index] else "";
-    }
-
-    pub fn _removeProperty(self: *CSSStyleDeclaration, name: []const u8) ![]const u8 {
-        const prop = self.store.fetchRemove(name) orelse return "";
-        for (self.order.items, 0..) |item, i| {
-            if (std.mem.eql(u8, item, name)) {
-                _ = self.order.orderedRemove(i);
-                break;
-            }
-        }
-        // safe to return, since it's in our page.arena
-        return prop.value.value;
-    }
-
-    pub fn _setProperty(self: *CSSStyleDeclaration, name: []const u8, value: []const u8, priority: ?[]const u8, page: *Page) !void {
-        const owned_value = try page.arena.dupe(u8, value);
-        const is_important = priority != null and std.ascii.eqlIgnoreCase(priority.?, "important");
-
-        const gop = try self.store.getOrPut(page.arena, name);
-        if (!gop.found_existing) {
-            const owned_name = try page.arena.dupe(u8, name);
-            gop.key_ptr.* = owned_name;
-            try self.order.append(page.arena, owned_name);
-        }
-
-        gop.value_ptr.* = .{ .value = owned_value, .priority = is_important };
-    }
-
-    pub fn named_get(self: *const CSSStyleDeclaration, name: []const u8, _: *bool) []const u8 {
-        return self._getPropertyValue(name);
-    }
-};
-
-const testing = @import("../../testing.zig");
-
-test "CSSOM.CSSStyleDeclaration" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let style = document.getElementById('content').style", "undefined" },
-        .{ "style.cssText = 'color: red; font-size: 12px; margin: 5px !important;'", "color: red; font-size: 12px; margin: 5px !important;" },
-        .{ "style.length", "3" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.getPropertyValue('color')", "red" },
-        .{ "style.getPropertyValue('font-size')", "12px" },
-        .{ "style.getPropertyValue('unknown-property')", "" },
-
-        .{ "style.getPropertyPriority('margin')", "important" },
-        .{ "style.getPropertyPriority('color')", "" },
-        .{ "style.getPropertyPriority('unknown-property')", "" },
-
-        .{ "style.item(0)", "color" },
-        .{ "style.item(1)", "font-size" },
-        .{ "style.item(2)", "margin" },
-        .{ "style.item(3)", "" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.setProperty('background-color', 'blue')", "undefined" },
-        .{ "style.getPropertyValue('background-color')", "blue" },
-        .{ "style.length", "4" },
-
-        .{ "style.setProperty('color', 'green')", "undefined" },
-        .{ "style.getPropertyValue('color')", "green" },
-        .{ "style.length", "4" },
-        .{ "style.color", "green" },
-
-        .{ "style.setProperty('padding', '10px', 'important')", "undefined" },
-        .{ "style.getPropertyValue('padding')", "10px" },
-        .{ "style.getPropertyPriority('padding')", "important" },
-
-        .{ "style.setProperty('border', '1px solid black', 'IMPORTANT')", "undefined" },
-        .{ "style.getPropertyPriority('border')", "important" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.removeProperty('color')", "green" },
-        .{ "style.getPropertyValue('color')", "" },
-        .{ "style.length", "5" },
-
-        .{ "style.removeProperty('unknown-property')", "" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.cssText.includes('font-size: 12px;')", "true" },
-        .{ "style.cssText.includes('margin: 5px !important;')", "true" },
-        .{ "style.cssText.includes('padding: 10px !important;')", "true" },
-        .{ "style.cssText.includes('border: 1px solid black !important;')", "true" },
-
-        .{ "style.cssText = 'color: purple; text-align: center;'", "color: purple; text-align: center;" },
-        .{ "style.length", "2" },
-        .{ "style.getPropertyValue('color')", "purple" },
-        .{ "style.getPropertyValue('text-align')", "center" },
-        .{ "style.getPropertyValue('font-size')", "" },
-
-        .{ "style.setProperty('cont', 'Hello; world!')", "undefined" },
-        .{ "style.getPropertyValue('cont')", "Hello; world!" },
-
-        .{ "style.cssText = 'content: \"Hello; world!\"; background-image: url(\"test.png\");'", "content: \"Hello; world!\"; background-image: url(\"test.png\");" },
-        .{ "style.getPropertyValue('content')", "\"Hello; world!\"" },
-        .{ "style.getPropertyValue('background-image')", "url(\"test.png\")" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.cssFloat", "" },
-        .{ "style.cssFloat = 'left'", "left" },
-        .{ "style.cssFloat", "left" },
-        .{ "style.getPropertyValue('float')", "left" },
-
-        .{ "style.cssFloat = 'right'", "right" },
-        .{ "style.cssFloat", "right" },
-
-        .{ "style.cssFloat = null", "null" },
-        .{ "style.cssFloat", "" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.setProperty('display', '')", "undefined" },
-        .{ "style.getPropertyValue('display')", "" },
-
-        .{ "style.cssText = '  color  :  purple  ;  margin  :  10px  ;  '", "  color  :  purple  ;  margin  :  10px  ;  " },
-        .{ "style.getPropertyValue('color')", "purple" },
-        .{ "style.getPropertyValue('margin')", "10px" },
-
-        .{ "style.setProperty('border-bottom-left-radius', '5px')", "undefined" },
-        .{ "style.getPropertyValue('border-bottom-left-radius')", "5px" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "style.visibility", "visible" },
-        .{ "style.getPropertyValue('visibility')", "visible" },
-    }, .{});
-}

src/browser/cssom/css_value_analyzer.zig

@@ -1,811 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-pub const CSSValueAnalyzer = struct {
-    pub fn isNumericWithUnit(value: []const u8) bool {
-        if (value.len == 0) return false;
-
-        if (!std.ascii.isDigit(value[0]) and
-            value[0] != '+' and value[0] != '-' and value[0] != '.')
-        {
-            return false;
-        }
-
-        var i: usize = 0;
-        var has_digit = false;
-        var decimal_point = false;
-
-        while (i < value.len) : (i += 1) {
-            const c = value[i];
-            if (std.ascii.isDigit(c)) {
-                has_digit = true;
-            } else if (c == '.' and !decimal_point) {
-                decimal_point = true;
-            } else if ((c == 'e' or c == 'E') and has_digit) {
-                if (i + 1 >= value.len) return false;
-                if (value[i + 1] != '+' and value[i + 1] != '-' and !std.ascii.isDigit(value[i + 1])) break;
-                i += 1;
-                if (value[i] == '+' or value[i] == '-') {
-                    i += 1;
-                }
-                var has_exp_digits = false;
-                while (i < value.len and std.ascii.isDigit(value[i])) : (i += 1) {
-                    has_exp_digits = true;
-                }
-                if (!has_exp_digits) return false;
-                break;
-            } else if (c != '-' and c != '+') {
-                break;
-            }
-        }
-
-        if (!has_digit) return false;
-
-        if (i == value.len) return true;
-
-        const unit = value[i..];
-        return CSSKeywords.isValidUnit(unit);
-    }
-
-    pub fn isHexColor(value: []const u8) bool {
-        if (!std.mem.startsWith(u8, value, "#")) return false;
-
-        const hex_part = value[1..];
-        if (hex_part.len != 3 and hex_part.len != 6 and hex_part.len != 8) return false;
-
-        for (hex_part) |c| {
-            if (!std.ascii.isHex(c)) return false;
-        }
-
-        return true;
-    }
-
-    pub fn isMultiValueProperty(value: []const u8) bool {
-        var parts = std.mem.splitAny(u8, value, " ");
-        var multi_value_parts: usize = 0;
-        var all_parts_valid = true;
-
-        while (parts.next()) |part| {
-            if (part.len == 0) continue;
-            multi_value_parts += 1;
-
-            const is_numeric = isNumericWithUnit(part);
-            const is_hex_color = isHexColor(part);
-            const is_known_keyword = CSSKeywords.isKnownKeyword(part);
-            const is_function = CSSKeywords.startsWithFunction(part);
-
-            if (!is_numeric and !is_hex_color and !is_known_keyword and !is_function) {
-                all_parts_valid = false;
-                break;
-            }
-        }
-
-        return multi_value_parts >= 2 and all_parts_valid;
-    }
-
-    pub fn isAlreadyQuoted(value: []const u8) bool {
-        return value.len >= 2 and ((value[0] == '"' and value[value.len - 1] == '"') or
-            (value[0] == '\'' and value[value.len - 1] == '\''));
-    }
-
-    pub fn isValidPropertyName(name: []const u8) bool {
-        if (name.len == 0) return false;
-
-        if (std.mem.startsWith(u8, name, "--")) {
-            if (name.len == 2) return false;
-            for (name[2..]) |c| {
-                if (!std.ascii.isAlphanumeric(c) and c != '-' and c != '_') {
-                    return false;
-                }
-            }
-            return true;
-        }
-
-        const first_char = name[0];
-        if (!std.ascii.isAlphabetic(first_char) and first_char != '-') {
-            return false;
-        }
-
-        if (first_char == '-') {
-            if (name.len < 2) return false;
-
-            if (!std.ascii.isAlphabetic(name[1])) {
-                return false;
-            }
-
-            for (name[2..]) |c| {
-                if (!std.ascii.isAlphanumeric(c) and c != '-') {
-                    return false;
-                }
-            }
-        } else {
-            for (name[1..]) |c| {
-                if (!std.ascii.isAlphanumeric(c) and c != '-') {
-                    return false;
-                }
-            }
-        }
-
-        return true;
-    }
-
-    pub fn extractImportant(value: []const u8) struct { value: []const u8, is_important: bool } {
-        const trimmed = std.mem.trim(u8, value, &std.ascii.whitespace);
-
-        if (std.mem.endsWith(u8, trimmed, "!important")) {
-            const clean_value = std.mem.trimRight(u8, trimmed[0 .. trimmed.len - 10], &std.ascii.whitespace);
-            return .{ .value = clean_value, .is_important = true };
-        }
-
-        return .{ .value = trimmed, .is_important = false };
-    }
-
-    pub fn needsQuotes(value: []const u8) bool {
-        if (value.len == 0) return true;
-        if (isAlreadyQuoted(value)) return false;
-
-        if (CSSKeywords.containsSpecialChar(value)) {
-            return true;
-        }
-
-        if (std.mem.indexOfScalar(u8, value, ' ') == null) {
-            return false;
-        }
-
-        const is_url = std.mem.startsWith(u8, value, "url(");
-        const is_function = CSSKeywords.startsWithFunction(value);
-
-        return !isMultiValueProperty(value) and
-            !is_url and
-            !is_function;
-    }
-
-    pub fn escapeCSSValue(arena: std.mem.Allocator, value: []const u8) ![]const u8 {
-        if (!needsQuotes(value)) {
-            return value;
-        }
-        var out: std.ArrayListUnmanaged(u8) = .empty;
-
-        // We'll need at least this much space, +2 for the quotes
-        try out.ensureTotalCapacity(arena, value.len + 2);
-        const writer = out.writer(arena);
-
-        try writer.writeByte('"');
-
-        for (value, 0..) |c, i| {
-            switch (c) {
-                '"' => try writer.writeAll("\\\""),
-                '\\' => try writer.writeAll("\\\\"),
-                '\n' => try writer.writeAll("\\A "),
-                '\r' => try writer.writeAll("\\D "),
-                '\t' => try writer.writeAll("\\9 "),
-                0...8, 11, 12, 14...31, 127 => {
-                    try writer.print("\\{x}", .{c});
-                    if (i + 1 < value.len and std.ascii.isHex(value[i + 1])) {
-                        try writer.writeByte(' ');
-                    }
-                },
-                else => try writer.writeByte(c),
-            }
-        }
-
-        try writer.writeByte('"');
-        return out.items;
-    }
-
-    pub fn isKnownKeyword(value: []const u8) bool {
-        return CSSKeywords.isKnownKeyword(value);
-    }
-
-    pub fn containsSpecialChar(value: []const u8) bool {
-        return CSSKeywords.containsSpecialChar(value);
-    }
-};
-
-const CSSKeywords = struct {
-    const border_styles = [_][]const u8{
-        "none", "solid", "dotted", "dashed", "double", "groove", "ridge", "inset", "outset",
-    };
-
-    const color_names = [_][]const u8{
-        "black",        "white",   "red", "green", "blue", "yellow", "purple", "gray", "transparent",
-        "currentColor", "inherit",
-    };
-
-    const position_keywords = [_][]const u8{
-        "auto", "center", "left", "right", "top", "bottom",
-    };
-
-    const background_repeat = [_][]const u8{
-        "repeat", "no-repeat", "repeat-x", "repeat-y", "space", "round",
-    };
-
-    const font_styles = [_][]const u8{
-        "normal", "italic", "oblique", "bold", "bolder", "lighter",
-    };
-
-    const font_sizes = [_][]const u8{
-        "xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large",
-        "smaller",  "larger",
-    };
-
-    const font_families = [_][]const u8{
-        "serif", "sans-serif", "monospace", "cursive", "fantasy", "system-ui",
-    };
-
-    const css_global = [_][]const u8{
-        "initial", "inherit", "unset", "revert",
-    };
-
-    const display_values = [_][]const u8{
-        "block", "inline", "inline-block", "flex", "grid", "none",
-    };
-
-    const length_units = [_][]const u8{
-        "px", "em", "rem", "vw", "vh", "vmin", "vmax", "%", "pt", "pc", "in", "cm", "mm",
-        "ex", "ch", "fr",
-    };
-
-    const angle_units = [_][]const u8{
-        "deg", "rad", "grad", "turn",
-    };
-
-    const time_units = [_][]const u8{
-        "s", "ms",
-    };
-
-    const frequency_units = [_][]const u8{
-        "Hz", "kHz",
-    };
-
-    const resolution_units = [_][]const u8{
-        "dpi", "dpcm", "dppx",
-    };
-
-    const special_chars = [_]u8{
-        '"', '\'', ';', '{', '}', '\\', '<', '>', '/', '\n', '\t', '\r', '\x00', '\x7F',
-    };
-
-    const functions = [_][]const u8{
-        "rgb(",             "rgba(",            "hsl(",            "hsla(",      "url(",    "calc(",  "var(",  "attr(",
-        "linear-gradient(", "radial-gradient(", "conic-gradient(", "translate(", "rotate(", "scale(", "skew(", "matrix(",
-    };
-
-    pub fn isKnownKeyword(value: []const u8) bool {
-        const all_categories = [_][]const []const u8{
-            &border_styles,  &color_names, &position_keywords, &background_repeat,
-            &font_styles,    &font_sizes,  &font_families,     &css_global,
-            &display_values,
-        };
-
-        for (all_categories) |category| {
-            for (category) |keyword| {
-                if (std.ascii.eqlIgnoreCase(value, keyword)) {
-                    return true;
-                }
-            }
-        }
-
-        return false;
-    }
-
-    pub fn containsSpecialChar(value: []const u8) bool {
-        for (value) |c| {
-            for (special_chars) |special| {
-                if (c == special) {
-                    return true;
-                }
-            }
-        }
-        return false;
-    }
-
-    pub fn isValidUnit(unit: []const u8) bool {
-        const all_units = [_][]const []const u8{
-            &length_units, &angle_units, &time_units, &frequency_units, &resolution_units,
-        };
-
-        for (all_units) |category| {
-            for (category) |valid_unit| {
-                if (std.ascii.eqlIgnoreCase(unit, valid_unit)) {
-                    return true;
-                }
-            }
-        }
-
-        return false;
-    }
-
-    pub fn startsWithFunction(value: []const u8) bool {
-        const pos = std.mem.indexOfScalar(u8, value, '(') orelse return false;
-        if (pos == 0) return false;
-
-        if (std.mem.indexOfScalarPos(u8, value, pos, ')') == null) {
-            return false;
-        }
-        const function_name = value[0..pos];
-        return isValidFunctionName(function_name);
-    }
-
-    fn isValidFunctionName(name: []const u8) bool {
-        if (name.len == 0) return false;
-
-        const first = name[0];
-        if (!std.ascii.isAlphabetic(first) and first != '_' and first != '-') {
-            return false;
-        }
-
-        for (name[1..]) |c| {
-            if (!std.ascii.isAlphanumeric(c) and c != '_' and c != '-') {
-                return false;
-            }
-        }
-
-        return true;
-    }
-};
-
-const testing = @import("../../testing.zig");
-
-test "CSSValueAnalyzer: isNumericWithUnit - valid numbers with units" {
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("10px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("3.14em"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("-5rem"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("+12.5%"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("0vh"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit(".5vw"));
-}
-
-test "CSSValueAnalyzer: isNumericWithUnit - scientific notation" {
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("1e5px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("2.5E-3em"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("1e+2rem"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("-3.14e10px"));
-}
-
-test "CSSValueAnalyzer: isNumericWithUnit - edge cases and invalid inputs" {
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit(""));
-
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("px"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("--px"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit(".px"));
-
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("1e"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("1epx"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("1e+"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("1e+px"));
-
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("1.2.3px"));
-
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("10xyz"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("5invalid"));
-
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("10"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("3.14"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("-5"));
-}
-
-test "CSSValueAnalyzer: isHexColor - valid hex colors" {
-    try testing.expect(CSSValueAnalyzer.isHexColor("#000"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#fff"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#123456"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#abcdef"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#ABCDEF"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#12345678"));
-}
-
-test "CSSValueAnalyzer: isHexColor - invalid hex colors" {
-    try testing.expect(!CSSValueAnalyzer.isHexColor(""));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("000"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#00"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#0000"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#00000"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#0000000"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#000000000"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#gggggg"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#123xyz"));
-}
-
-test "CSSValueAnalyzer: isMultiValueProperty - valid multi-value properties" {
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("10px 20px"));
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("solid red"));
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("#fff black"));
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("1em 2em 3em 4em"));
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("rgb(255,0,0) solid"));
-}
-
-test "CSSValueAnalyzer: isMultiValueProperty - invalid multi-value properties" {
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty(""));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("10px"));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("invalid unknown"));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("10px invalid"));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("   "));
-}
-
-test "CSSValueAnalyzer: isAlreadyQuoted - various quoting scenarios" {
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("\"hello\""));
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("'world'"));
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("\"\""));
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("''"));
-
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted(""));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("hello"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("\""));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("'"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("\"hello'"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("'hello\""));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("\"hello"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("hello\""));
-}
-
-test "CSSValueAnalyzer: isValidPropertyName - valid property names" {
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("color"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("background-color"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("-webkit-transform"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("font-size"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("margin-top"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("z-index"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("line-height"));
-}
-
-test "CSSValueAnalyzer: isValidPropertyName - invalid property names" {
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName(""));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("123color"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("color!"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("color space"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("@color"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("color.test"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("color_test"));
-}
-
-test "CSSValueAnalyzer: extractImportant - with and without !important" {
-    var result = CSSValueAnalyzer.extractImportant("red !important");
-    try testing.expect(result.is_important);
-    try testing.expectEqual("red", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("blue");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("blue", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("  green  !important  ");
-    try testing.expect(result.is_important);
-    try testing.expectEqual("green", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("!important");
-    try testing.expect(result.is_important);
-    try testing.expectEqual("", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("important");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("important", result.value);
-}
-
-test "CSSValueAnalyzer: needsQuotes - various scenarios" {
-    try testing.expect(CSSValueAnalyzer.needsQuotes(""));
-    try testing.expect(CSSValueAnalyzer.needsQuotes("hello world"));
-    try testing.expect(CSSValueAnalyzer.needsQuotes("test;"));
-    try testing.expect(CSSValueAnalyzer.needsQuotes("a{b}"));
-    try testing.expect(CSSValueAnalyzer.needsQuotes("test\"quote"));
-
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("\"already quoted\""));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("'already quoted'"));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("url(image.png)"));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("rgb(255, 0, 0)"));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("10px 20px"));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("simple"));
-}
-
-test "CSSValueAnalyzer: escapeCSSValue - escaping various characters" {
-    const allocator = testing.arena_allocator;
-
-    var result = try CSSValueAnalyzer.escapeCSSValue(allocator, "simple");
-    try testing.expectEqual("simple", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "\"already quoted\"");
-    try testing.expectEqual("\"already quoted\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\"quote");
-    try testing.expectEqual("\"test\\\"quote\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\nline");
-    try testing.expectEqual("\"test\\A line\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\\back");
-    try testing.expectEqual("\"test\\\\back\"", result);
-}
-
-test "CSSValueAnalyzer: CSSKeywords.isKnownKeyword - case sensitivity" {
-    try testing.expect(CSSKeywords.isKnownKeyword("red"));
-    try testing.expect(CSSKeywords.isKnownKeyword("solid"));
-    try testing.expect(CSSKeywords.isKnownKeyword("center"));
-    try testing.expect(CSSKeywords.isKnownKeyword("inherit"));
-
-    try testing.expect(CSSKeywords.isKnownKeyword("RED"));
-    try testing.expect(CSSKeywords.isKnownKeyword("Red"));
-    try testing.expect(CSSKeywords.isKnownKeyword("SOLID"));
-    try testing.expect(CSSKeywords.isKnownKeyword("Center"));
-
-    try testing.expect(!CSSKeywords.isKnownKeyword("invalid"));
-    try testing.expect(!CSSKeywords.isKnownKeyword("unknown"));
-    try testing.expect(!CSSKeywords.isKnownKeyword(""));
-}
-
-test "CSSValueAnalyzer: CSSKeywords.containsSpecialChar - various special characters" {
-    try testing.expect(CSSKeywords.containsSpecialChar("test\"quote"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test'quote"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test;end"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test{brace"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test}brace"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test\\back"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test<angle"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test>angle"));
-    try testing.expect(CSSKeywords.containsSpecialChar("test/slash"));
-
-    try testing.expect(!CSSKeywords.containsSpecialChar("normal-text"));
-    try testing.expect(!CSSKeywords.containsSpecialChar("text123"));
-    try testing.expect(!CSSKeywords.containsSpecialChar(""));
-}
-
-test "CSSValueAnalyzer: CSSKeywords.isValidUnit - various units" {
-    try testing.expect(CSSKeywords.isValidUnit("px"));
-    try testing.expect(CSSKeywords.isValidUnit("em"));
-    try testing.expect(CSSKeywords.isValidUnit("rem"));
-    try testing.expect(CSSKeywords.isValidUnit("%"));
-
-    try testing.expect(CSSKeywords.isValidUnit("deg"));
-    try testing.expect(CSSKeywords.isValidUnit("rad"));
-
-    try testing.expect(CSSKeywords.isValidUnit("s"));
-    try testing.expect(CSSKeywords.isValidUnit("ms"));
-
-    try testing.expect(CSSKeywords.isValidUnit("PX"));
-
-    try testing.expect(!CSSKeywords.isValidUnit("invalid"));
-    try testing.expect(!CSSKeywords.isValidUnit(""));
-}
-
-test "CSSValueAnalyzer: CSSKeywords.startsWithFunction - function detection" {
-    try testing.expect(CSSKeywords.startsWithFunction("rgb(255, 0, 0)"));
-    try testing.expect(CSSKeywords.startsWithFunction("rgba(255, 0, 0, 0.5)"));
-    try testing.expect(CSSKeywords.startsWithFunction("url(image.png)"));
-    try testing.expect(CSSKeywords.startsWithFunction("calc(100% - 20px)"));
-    try testing.expect(CSSKeywords.startsWithFunction("var(--custom-property)"));
-    try testing.expect(CSSKeywords.startsWithFunction("linear-gradient(to right, red, blue)"));
-
-    try testing.expect(CSSKeywords.startsWithFunction("custom-function(args)"));
-    try testing.expect(CSSKeywords.startsWithFunction("unknown(test)"));
-
-    try testing.expect(!CSSKeywords.startsWithFunction("not-a-function"));
-    try testing.expect(!CSSKeywords.startsWithFunction("missing-paren)"));
-    try testing.expect(!CSSKeywords.startsWithFunction("missing-close("));
-    try testing.expect(!CSSKeywords.startsWithFunction(""));
-    try testing.expect(!CSSKeywords.startsWithFunction("rgb"));
-}
-
-test "CSSValueAnalyzer: isNumericWithUnit - whitespace handling" {
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit(" 10px"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("10 px"));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("10px "));
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit(" 10 px "));
-}
-
-test "CSSValueAnalyzer: extractImportant - whitespace edge cases" {
-    var result = CSSValueAnalyzer.extractImportant("   ");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("\t\n\r !important\t\n");
-    try testing.expect(result.is_important);
-    try testing.expectEqual("", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("red\t!important");
-    try testing.expect(result.is_important);
-    try testing.expectEqual("red", result.value);
-}
-
-test "CSSValueAnalyzer: isHexColor - mixed case handling" {
-    try testing.expect(CSSValueAnalyzer.isHexColor("#AbC"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#123aBc"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#FFffFF"));
-    try testing.expect(CSSValueAnalyzer.isHexColor("#000FFF"));
-}
-
-test "CSSValueAnalyzer: edge case - very long inputs" {
-    const long_valid = "a" ** 1000 ++ "px";
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit(long_valid)); // not numeric
-
-    const long_property = "a-" ** 100 ++ "property";
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName(long_property));
-
-    const long_hex = "#" ++ "a" ** 20;
-    try testing.expect(!CSSValueAnalyzer.isHexColor(long_hex));
-}
-
-test "CSSValueAnalyzer: boundary conditions - numeric parsing" {
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("0px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("0.0px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit(".0px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("0.px"));
-
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("999999999px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("1.7976931348623157e+308px"));
-
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("0.000000001px"));
-    try testing.expect(CSSValueAnalyzer.isNumericWithUnit("1e-100px"));
-}
-
-test "CSSValueAnalyzer: extractImportant - malformed important declarations" {
-    var result = CSSValueAnalyzer.extractImportant("red ! important");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("red ! important", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("red !Important");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("red !Important", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("red !IMPORTANT");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("red !IMPORTANT", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("!importantred");
-    try testing.expect(!result.is_important);
-    try testing.expectEqual("!importantred", result.value);
-
-    result = CSSValueAnalyzer.extractImportant("red !important !important");
-    try testing.expect(result.is_important);
-    try testing.expectEqual("red !important", result.value);
-}
-
-test "CSSValueAnalyzer: isMultiValueProperty - complex spacing scenarios" {
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("10px    20px"));
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("solid     red"));
-
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("  10px 20px  "));
-
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("10px\t20px"));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("10px\n20px"));
-
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("10px   20px   30px"));
-}
-
-test "CSSValueAnalyzer: isAlreadyQuoted - edge cases with quotes" {
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("\"'hello'\""));
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("'\"hello\"'"));
-
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("\"hello\\\"world\""));
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("'hello\\'world'"));
-
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("\"hello"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("hello\""));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("'hello"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("hello'"));
-
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("\"a\""));
-    try testing.expect(CSSValueAnalyzer.isAlreadyQuoted("'b'"));
-}
-
-test "CSSValueAnalyzer: needsQuotes - function and URL edge cases" {
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("rgb(255, 0, 0)"));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("calc(100% - 20px)"));
-
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("url(path with spaces.jpg)"));
-
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("linear-gradient(to right, red, blue)"));
-
-    try testing.expect(CSSValueAnalyzer.needsQuotes("rgb(255, 0, 0"));
-}
-
-test "CSSValueAnalyzer: escapeCSSValue - control characters and Unicode" {
-    const allocator = testing.arena_allocator;
-
-    var result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\ttab");
-    try testing.expectEqual("\"test\\9 tab\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\rreturn");
-    try testing.expectEqual("\"test\\D return\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\x00null");
-    try testing.expectEqual("\"test\\0null\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\x7Fdel");
-    try testing.expectEqual("\"test\\7f del\"", result);
-
-    result = try CSSValueAnalyzer.escapeCSSValue(allocator, "test\"quote\nline\\back");
-    try testing.expectEqual("\"test\\\"quote\\A line\\\\back\"", result);
-}
-
-test "CSSValueAnalyzer: isValidPropertyName - CSS custom properties and vendor prefixes" {
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("--custom-color"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("--my-variable"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("--123"));
-
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("-webkit-transform"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("-moz-border-radius"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("-ms-filter"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("-o-transition"));
-
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("-123invalid"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("--"));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName("-"));
-}
-
-test "CSSValueAnalyzer: startsWithFunction - case sensitivity and partial matches" {
-    try testing.expect(CSSKeywords.startsWithFunction("RGB(255, 0, 0)"));
-    try testing.expect(CSSKeywords.startsWithFunction("Rgb(255, 0, 0)"));
-    try testing.expect(CSSKeywords.startsWithFunction("URL(image.png)"));
-
-    try testing.expect(CSSKeywords.startsWithFunction("rg(something)"));
-    try testing.expect(CSSKeywords.startsWithFunction("ur(something)"));
-
-    try testing.expect(CSSKeywords.startsWithFunction("rgb(1,2,3)"));
-    try testing.expect(CSSKeywords.startsWithFunction("rgba(1,2,3,4)"));
-
-    try testing.expect(CSSKeywords.startsWithFunction("my-custom-function(args)"));
-    try testing.expect(CSSKeywords.startsWithFunction("function-with-dashes(test)"));
-
-    try testing.expect(!CSSKeywords.startsWithFunction("123function(test)"));
-}
-
-test "CSSValueAnalyzer: isHexColor - Unicode and invalid characters" {
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#ghijkl"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#12345g"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#xyz"));
-
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#АВС"));
-
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#1234567g"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("#g2345678"));
-}
-
-test "CSSValueAnalyzer: complex integration scenarios" {
-    const allocator = testing.arena_allocator;
-
-    try testing.expect(CSSValueAnalyzer.isMultiValueProperty("rgb(255,0,0) url(bg.jpg)"));
-
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("calc(100% - 20px)"));
-
-    const result = try CSSValueAnalyzer.escapeCSSValue(allocator, "fake(function with spaces");
-    try testing.expectEqual("\"fake(function with spaces\"", result);
-
-    const important_result = CSSValueAnalyzer.extractImportant("rgb(255,0,0) !important");
-    try testing.expect(important_result.is_important);
-    try testing.expectEqual("rgb(255,0,0)", important_result.value);
-}
-
-test "CSSValueAnalyzer: performance edge cases - empty and minimal inputs" {
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit(""));
-    try testing.expect(!CSSValueAnalyzer.isHexColor(""));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty(""));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted(""));
-    try testing.expect(!CSSValueAnalyzer.isValidPropertyName(""));
-    try testing.expect(CSSValueAnalyzer.needsQuotes(""));
-    try testing.expect(!CSSKeywords.isKnownKeyword(""));
-    try testing.expect(!CSSKeywords.containsSpecialChar(""));
-    try testing.expect(!CSSKeywords.isValidUnit(""));
-    try testing.expect(!CSSKeywords.startsWithFunction(""));
-
-    try testing.expect(!CSSValueAnalyzer.isNumericWithUnit("a"));
-    try testing.expect(!CSSValueAnalyzer.isHexColor("a"));
-    try testing.expect(!CSSValueAnalyzer.isMultiValueProperty("a"));
-    try testing.expect(!CSSValueAnalyzer.isAlreadyQuoted("a"));
-    try testing.expect(CSSValueAnalyzer.isValidPropertyName("a"));
-    try testing.expect(!CSSValueAnalyzer.needsQuotes("a"));
-}

src/browser/datauri.zig

@@ -1,79 +0,0 @@
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-
-// Represents https://developer.mozilla.org/en-US/docs/Web/URI/Reference/Schemes/data
-pub const DataURI = struct {
-    was_base64_encoded: bool,
-    // The contents in the uri. It will be base64 decoded but not prepared in
-    // any way for mime.charset.
-    data: []const u8,
-
-    // Parses data:[<media-type>][;base64],<data>
-    pub fn parse(allocator: Allocator, src: []const u8) !?DataURI {
-        if (!std.mem.startsWith(u8, src, "data:")) {
-            return null;
-        }
-
-        const uri = src[5..];
-        const data_starts = std.mem.indexOfScalar(u8, uri, ',') orelse return null;
-
-        // Extract the encoding.
-        var metadata = uri[0..data_starts];
-        var base64_encoded = false;
-        if (std.mem.endsWith(u8, metadata, ";base64")) {
-            base64_encoded = true;
-            metadata = metadata[0 .. metadata.len - 7];
-        }
-
-        // TODO: Extract mime type. This not trivial because Mime.parse requires
-        // a []u8 and might mutate the src. And, the DataURI.parse references atm
-        // do not have deinit calls.
-
-        // Prepare the data.
-        var data = uri[data_starts + 1 ..];
-        if (base64_encoded) {
-            const decoder = std.base64.standard.Decoder;
-            const decoded_size = try decoder.calcSizeForSlice(data);
-
-            const buffer = try allocator.alloc(u8, decoded_size);
-            errdefer allocator.free(buffer);
-
-            try decoder.decode(buffer, data);
-            data = buffer;
-        }
-
-        return .{
-            .was_base64_encoded = base64_encoded,
-            .data = data,
-        };
-    }
-
-    pub fn deinit(self: *const DataURI, allocator: Allocator) void {
-        if (self.was_base64_encoded) {
-            allocator.free(self.data);
-        }
-    }
-};
-
-const testing = std.testing;
-test "DataURI: parse valid" {
-    try test_valid("data:text/javascript; charset=utf-8;base64,Zm9v", "foo");
-    try test_valid("data:text/javascript; charset=utf-8;,foo", "foo");
-    try test_valid("data:,foo", "foo");
-}
-
-test "DataURI: parse invalid" {
-    try test_cannot_parse("atad:,foo");
-    try test_cannot_parse("data:foo");
-    try test_cannot_parse("data:");
-}
-
-fn test_valid(uri: []const u8, expected: []const u8) !void {
-    const data_uri = try DataURI.parse(std.testing.allocator, uri) orelse return error.TestFailed;
-    defer data_uri.deinit(testing.allocator);
-    try testing.expectEqualStrings(expected, data_uri.data);
-}
-
-fn test_cannot_parse(uri: []const u8) !void {
-    try testing.expectEqual(null, DataURI.parse(std.testing.allocator, uri));
-}

src/browser/dom/attribute.zig

@@ -1,95 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-
-const Node = @import("node.zig").Node;
-
-// WEB IDL https://dom.spec.whatwg.org/#attr
-pub const Attr = struct {
-    pub const Self = parser.Attribute;
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    pub fn get_namespaceURI(self: *parser.Attribute) !?[]const u8 {
-        return try parser.nodeGetNamespace(parser.attributeToNode(self));
-    }
-
-    pub fn get_prefix(self: *parser.Attribute) !?[]const u8 {
-        return try parser.nodeGetPrefix(parser.attributeToNode(self));
-    }
-
-    pub fn get_localName(self: *parser.Attribute) ![]const u8 {
-        return try parser.nodeLocalName(parser.attributeToNode(self));
-    }
-
-    pub fn get_name(self: *parser.Attribute) ![]const u8 {
-        return try parser.attributeGetName(self);
-    }
-
-    pub fn get_value(self: *parser.Attribute) !?[]const u8 {
-        return try parser.attributeGetValue(self);
-    }
-
-    pub fn set_value(self: *parser.Attribute, v: []const u8) !?[]const u8 {
-        try parser.attributeSetValue(self, v);
-        return v;
-    }
-
-    pub fn get_ownerElement(self: *parser.Attribute) !?*parser.Element {
-        return try parser.attributeGetOwnerElement(self);
-    }
-
-    pub fn get_specified(_: *parser.Attribute) bool {
-        return true;
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Attribute" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let a = document.createAttributeNS('foo', 'bar')", "undefined" },
-        .{ "a.namespaceURI", "foo" },
-        .{ "a.prefix", "null" },
-        .{ "a.localName", "bar" },
-        .{ "a.name", "bar" },
-        .{ "a.value", "" },
-        // TODO: libdom has a bug here: the created attr has no parent, it
-        // causes a panic w/ libdom when setting the value.
-        //.{ "a.value = 'nok'", "nok" },
-        .{ "a.ownerElement", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let b = document.getElementById('link').getAttributeNode('class')", "undefined" },
-        .{ "b.name", "class" },
-        .{ "b.value", "ok" },
-        .{ "b.value = 'nok'", "nok" },
-        .{ "b.value", "nok" },
-        .{ "b.value = null", "null" },
-        .{ "b.value", "null" },
-        .{ "b.value = 'ok'", "ok" },
-        .{ "b.ownerElement.id", "link" },
-    }, .{});
-}

src/browser/dom/character_data.zig

@@ -1,196 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-
-const Node = @import("node.zig").Node;
-const Comment = @import("comment.zig").Comment;
-const Text = @import("text.zig");
-const ProcessingInstruction = @import("processing_instruction.zig").ProcessingInstruction;
-const HTMLElem = @import("../html/elements.zig");
-
-// CharacterData interfaces
-pub const Interfaces = .{
-    Comment,
-    Text.Text,
-    Text.Interfaces,
-    ProcessingInstruction,
-};
-
-// CharacterData implementation
-pub const CharacterData = struct {
-    pub const Self = parser.CharacterData;
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    // JS funcs
-    // --------
-
-    // Read attributes
-
-    pub fn get_length(self: *parser.CharacterData) !u32 {
-        return try parser.characterDataLength(self);
-    }
-
-    pub fn get_nextElementSibling(self: *parser.CharacterData) !?HTMLElem.Union {
-        const res = try parser.nodeNextElementSibling(parser.characterDataToNode(self));
-        if (res == null) {
-            return null;
-        }
-        return try HTMLElem.toInterface(HTMLElem.Union, res.?);
-    }
-
-    pub fn get_previousElementSibling(self: *parser.CharacterData) !?HTMLElem.Union {
-        const res = try parser.nodePreviousElementSibling(parser.characterDataToNode(self));
-        if (res == null) {
-            return null;
-        }
-        return try HTMLElem.toInterface(HTMLElem.Union, res.?);
-    }
-
-    // Read/Write attributes
-
-    pub fn get_data(self: *parser.CharacterData) ![]const u8 {
-        return try parser.characterDataData(self);
-    }
-
-    pub fn set_data(self: *parser.CharacterData, data: []const u8) !void {
-        return try parser.characterDataSetData(self, data);
-    }
-
-    // JS methods
-    // ----------
-
-    pub fn _appendData(self: *parser.CharacterData, data: []const u8) !void {
-        return try parser.characterDataAppendData(self, data);
-    }
-
-    pub fn _deleteData(self: *parser.CharacterData, offset: u32, count: u32) !void {
-        return try parser.characterDataDeleteData(self, offset, count);
-    }
-
-    pub fn _insertData(self: *parser.CharacterData, offset: u32, data: []const u8) !void {
-        return try parser.characterDataInsertData(self, offset, data);
-    }
-
-    pub fn _replaceData(self: *parser.CharacterData, offset: u32, count: u32, data: []const u8) !void {
-        return try parser.characterDataReplaceData(self, offset, count, data);
-    }
-
-    pub fn _substringData(self: *parser.CharacterData, offset: u32, count: u32) ![]const u8 {
-        return try parser.characterDataSubstringData(self, offset, count);
-    }
-
-    // netsurf's CharacterData (text, comment) doesn't implement the
-    // dom_node_get_attributes and thus will crash if we try to call nodeIsEqualNode.
-    pub fn _isEqualNode(self: *parser.CharacterData, other_node: *parser.Node) !bool {
-        if (try parser.nodeType(@alignCast(@ptrCast(self))) != try parser.nodeType(other_node)) {
-            return false;
-        }
-
-        const other: *parser.CharacterData = @ptrCast(other_node);
-        if (std.mem.eql(u8, try get_data(self), try get_data(other)) == false) {
-            return false;
-        }
-
-        return true;
-    }
-
-    pub fn _before(self: *parser.CharacterData, nodes: []const Node.NodeOrText) !void {
-        const ref_node = parser.characterDataToNode(self);
-        return Node.before(ref_node, nodes);
-    }
-
-    pub fn _after(self: *parser.CharacterData, nodes: []const Node.NodeOrText) !void {
-        const ref_node = parser.characterDataToNode(self);
-        return Node.after(ref_node, nodes);
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.CharacterData" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let link = document.getElementById('link')", "undefined" },
-        .{ "let cdata = link.firstChild", "undefined" },
-        .{ "cdata.data", "OK" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.data = 'OK modified'", "OK modified" },
-        .{ "cdata.data === 'OK modified'", "true" },
-        .{ "cdata.data = 'OK'", "OK" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.length === 2", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.nextElementSibling === null", "true" },
-        // create a next element
-        .{ "let next = document.createElement('a')", "undefined" },
-        .{ "link.appendChild(next, cdata) !== undefined", "true" },
-        .{ "cdata.nextElementSibling.localName === 'a' ", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.previousElementSibling === null", "true" },
-        // create a prev element
-        .{ "let prev = document.createElement('div')", "undefined" },
-        .{ "link.insertBefore(prev, cdata) !== undefined", "true" },
-        .{ "cdata.previousElementSibling.localName === 'div' ", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.appendData(' modified')", "undefined" },
-        .{ "cdata.data === 'OK modified' ", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.deleteData('OK'.length, ' modified'.length)", "undefined" },
-        .{ "cdata.data == 'OK'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.insertData('OK'.length-1, 'modified')", "undefined" },
-        .{ "cdata.data == 'OmodifiedK'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.replaceData('OK'.length-1, 'modified'.length, 'replaced')", "undefined" },
-        .{ "cdata.data == 'OreplacedK'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.substringData('OK'.length-1, 'replaced'.length) == 'replaced'", "true" },
-        .{ "cdata.substringData('OK'.length-1, 0) == ''", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "cdata.substringData('OK'.length-1, 'replaced'.length) == 'replaced'", "true" },
-        .{ "cdata.substringData('OK'.length-1, 0) == ''", "true" },
-    }, .{});
-}

src/browser/dom/comment.zig

@@ -1,54 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-
-const CharacterData = @import("character_data.zig").CharacterData;
-
-const Page = @import("../page.zig").Page;
-
-// https://dom.spec.whatwg.org/#interface-comment
-pub const Comment = struct {
-    pub const Self = parser.Comment;
-    pub const prototype = *CharacterData;
-    pub const subtype = .node;
-
-    pub fn constructor(data: ?[]const u8, page: *const Page) !*parser.Comment {
-        return parser.documentCreateComment(
-            parser.documentHTMLToDocument(page.window.document),
-            data orelse "",
-        );
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Comment" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let comment = new Comment('foo')", "undefined" },
-        .{ "comment.data", "foo" },
-
-        .{ "let emptycomment = new Comment()", "undefined" },
-        .{ "emptycomment.data", "" },
-    }, .{});
-}

src/browser/dom/css.zig

@@ -1,80 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-
-const css = @import("../css/css.zig");
-const Node = @import("../css/libdom.zig").Node;
-const NodeList = @import("nodelist.zig").NodeList;
-
-const MatchFirst = struct {
-    n: ?*parser.Node = null,
-
-    pub fn match(m: *MatchFirst, n: Node) !void {
-        m.n = n.node;
-    }
-};
-
-pub fn querySelector(alloc: std.mem.Allocator, n: *parser.Node, selector: []const u8) !?*parser.Node {
-    const ps = try css.parse(alloc, selector, .{ .accept_pseudo_elts = true });
-    defer ps.deinit(alloc);
-
-    var m = MatchFirst{};
-
-    _ = try css.matchFirst(ps, Node{ .node = n }, &m);
-    return m.n;
-}
-
-const MatchAll = struct {
-    alloc: std.mem.Allocator,
-    nl: NodeList,
-
-    fn init(alloc: std.mem.Allocator) MatchAll {
-        return .{
-            .alloc = alloc,
-            .nl = .{},
-        };
-    }
-
-    fn deinit(m: *MatchAll) void {
-        m.nl.deinit(m.alloc);
-    }
-
-    pub fn match(m: *MatchAll, n: Node) !void {
-        try m.nl.append(m.alloc, n.node);
-    }
-
-    fn toOwnedList(m: *MatchAll) NodeList {
-        // reset it.
-        defer m.nl = .{};
-        return m.nl;
-    }
-};
-
-pub fn querySelectorAll(alloc: std.mem.Allocator, n: *parser.Node, selector: []const u8) !NodeList {
-    const ps = try css.parse(alloc, selector, .{ .accept_pseudo_elts = true });
-    defer ps.deinit(alloc);
-
-    var m = MatchAll.init(alloc);
-    defer m.deinit();
-
-    try css.matchAll(ps, Node{ .node = n }, &m);
-    return m.toOwnedList();
-}

src/browser/dom/document.zig

@@ -1,482 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const Node = @import("node.zig").Node;
-const NodeList = @import("nodelist.zig").NodeList;
-const NodeUnion = @import("node.zig").Union;
-
-const collection = @import("html_collection.zig");
-const css = @import("css.zig");
-
-const Element = @import("element.zig").Element;
-const ElementUnion = @import("element.zig").Union;
-const TreeWalker = @import("tree_walker.zig").TreeWalker;
-
-const Env = @import("../env.zig").Env;
-
-const DOMImplementation = @import("implementation.zig").DOMImplementation;
-
-// WEB IDL https://dom.spec.whatwg.org/#document
-pub const Document = struct {
-    pub const Self = parser.Document;
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    pub fn constructor(page: *const Page) !*parser.DocumentHTML {
-        const doc = try parser.documentCreateDocument(
-            try parser.documentHTMLGetTitle(page.window.document),
-        );
-
-        // we have to work w/ document instead of html document.
-        const ddoc = parser.documentHTMLToDocument(doc);
-        const ccur = parser.documentHTMLToDocument(page.window.document);
-        try parser.documentSetDocumentURI(ddoc, try parser.documentGetDocumentURI(ccur));
-        try parser.documentSetInputEncoding(ddoc, try parser.documentGetInputEncoding(ccur));
-
-        return doc;
-    }
-
-    // JS funcs
-    // --------
-    pub fn get_implementation(_: *parser.Document) DOMImplementation {
-        return DOMImplementation{};
-    }
-
-    pub fn get_documentElement(self: *parser.Document) !?ElementUnion {
-        const e = try parser.documentGetDocumentElement(self);
-        if (e == null) return null;
-        return try Element.toInterface(e.?);
-    }
-
-    pub fn get_documentURI(self: *parser.Document) ![]const u8 {
-        return try parser.documentGetDocumentURI(self);
-    }
-
-    pub fn get_URL(self: *parser.Document) ![]const u8 {
-        return try get_documentURI(self);
-    }
-
-    // TODO implement contentType
-    pub fn get_contentType(self: *parser.Document) []const u8 {
-        _ = self;
-        return "text/html";
-    }
-
-    // TODO implement compactMode
-    pub fn get_compatMode(self: *parser.Document) []const u8 {
-        _ = self;
-        return "CSS1Compat";
-    }
-
-    pub fn get_characterSet(self: *parser.Document) ![]const u8 {
-        return try parser.documentGetInputEncoding(self);
-    }
-
-    // alias of get_characterSet
-    pub fn get_charset(self: *parser.Document) ![]const u8 {
-        return try get_characterSet(self);
-    }
-
-    // alias of get_characterSet
-    pub fn get_inputEncoding(self: *parser.Document) ![]const u8 {
-        return try get_characterSet(self);
-    }
-
-    pub fn get_doctype(self: *parser.Document) !?*parser.DocumentType {
-        return try parser.documentGetDoctype(self);
-    }
-
-    pub fn _createEvent(_: *parser.Document, eventCstr: []const u8) !*parser.Event {
-        // TODO: for now only "Event" constructor is supported
-        // see table on https://dom.spec.whatwg.org/#dom-document-createevent $2
-        if (std.ascii.eqlIgnoreCase(eventCstr, "Event") or std.ascii.eqlIgnoreCase(eventCstr, "Events")) {
-            return try parser.eventCreate();
-        }
-        return parser.DOMError.NotSupported;
-    }
-
-    pub fn _getElementById(self: *parser.Document, id: []const u8) !?ElementUnion {
-        const e = try parser.documentGetElementById(self, id) orelse return null;
-        return try Element.toInterface(e);
-    }
-
-    const CreateElementResult = union(enum) {
-        element: ElementUnion,
-        custom: Env.JsObject,
-    };
-
-    pub fn _createElement(self: *parser.Document, tag_name: []const u8, page: *Page) !CreateElementResult {
-        if (try page.window.custom_elements.newInstance(tag_name)) |ce| {
-            return .{ .custom = ce };
-        }
-
-        const e = try parser.documentCreateElement(self, tag_name);
-        return .{ .element = try Element.toInterface(e) };
-    }
-
-    pub fn _createElementNS(self: *parser.Document, ns: []const u8, tag_name: []const u8) !ElementUnion {
-        const e = try parser.documentCreateElementNS(self, ns, tag_name);
-        return try Element.toInterface(e);
-    }
-
-    // We can't simply use libdom dom_document_get_elements_by_tag_name here.
-    // Indeed, netsurf implemented a previous dom spec when
-    // getElementsByTagName returned a NodeList.
-    // But since
-    // https://github.com/whatwg/dom/commit/190700b7c12ecfd3b5ebdb359ab1d6ea9cbf7749
-    // the spec changed to return an HTMLCollection instead.
-    // That's why we reimplemented getElementsByTagName by using an
-    // HTMLCollection in zig here.
-    pub fn _getElementsByTagName(
-        self: *parser.Document,
-        tag_name: []const u8,
-        page: *Page,
-    ) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByTagName(page.arena, parser.documentToNode(self), tag_name, true);
-    }
-
-    pub fn _getElementsByClassName(
-        self: *parser.Document,
-        classNames: []const u8,
-        page: *Page,
-    ) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByClassName(page.arena, parser.documentToNode(self), classNames, true);
-    }
-
-    pub fn _createDocumentFragment(self: *parser.Document) !*parser.DocumentFragment {
-        return try parser.documentCreateDocumentFragment(self);
-    }
-
-    pub fn _createTextNode(self: *parser.Document, data: []const u8) !*parser.Text {
-        return try parser.documentCreateTextNode(self, data);
-    }
-
-    pub fn _createCDATASection(self: *parser.Document, data: []const u8) !*parser.CDATASection {
-        return try parser.documentCreateCDATASection(self, data);
-    }
-
-    pub fn _createComment(self: *parser.Document, data: []const u8) !*parser.Comment {
-        return try parser.documentCreateComment(self, data);
-    }
-
-    pub fn _createProcessingInstruction(self: *parser.Document, target: []const u8, data: []const u8) !*parser.ProcessingInstruction {
-        return try parser.documentCreateProcessingInstruction(self, target, data);
-    }
-
-    pub fn _importNode(self: *parser.Document, node: *parser.Node, deep: ?bool) !NodeUnion {
-        const n = try parser.documentImportNode(self, node, deep orelse false);
-        return try Node.toInterface(n);
-    }
-
-    pub fn _adoptNode(self: *parser.Document, node: *parser.Node) !NodeUnion {
-        const n = try parser.documentAdoptNode(self, node);
-        return try Node.toInterface(n);
-    }
-
-    pub fn _createAttribute(self: *parser.Document, name: []const u8) !*parser.Attribute {
-        return try parser.documentCreateAttribute(self, name);
-    }
-
-    pub fn _createAttributeNS(self: *parser.Document, ns: []const u8, qname: []const u8) !*parser.Attribute {
-        return try parser.documentCreateAttributeNS(self, ns, qname);
-    }
-
-    // ParentNode
-    // https://dom.spec.whatwg.org/#parentnode
-    pub fn get_children(self: *parser.Document) !collection.HTMLCollection {
-        return try collection.HTMLCollectionChildren(parser.documentToNode(self), false);
-    }
-
-    pub fn get_firstElementChild(self: *parser.Document) !?ElementUnion {
-        const elt = try parser.documentGetDocumentElement(self) orelse return null;
-        return try Element.toInterface(elt);
-    }
-
-    pub fn get_lastElementChild(self: *parser.Document) !?ElementUnion {
-        const elt = try parser.documentGetDocumentElement(self) orelse return null;
-        return try Element.toInterface(elt);
-    }
-
-    pub fn get_childElementCount(self: *parser.Document) !u32 {
-        _ = try parser.documentGetDocumentElement(self) orelse return 0;
-        return 1;
-    }
-
-    pub fn _querySelector(self: *parser.Document, selector: []const u8, page: *Page) !?ElementUnion {
-        if (selector.len == 0) return null;
-
-        const n = try css.querySelector(page.arena, parser.documentToNode(self), selector);
-
-        if (n == null) return null;
-
-        return try Element.toInterface(parser.nodeToElement(n.?));
-    }
-
-    pub fn _querySelectorAll(self: *parser.Document, selector: []const u8, page: *Page) !NodeList {
-        return css.querySelectorAll(page.arena, parser.documentToNode(self), selector);
-    }
-
-    pub fn _prepend(self: *parser.Document, nodes: []const Node.NodeOrText) !void {
-        return Node.prepend(parser.documentToNode(self), nodes);
-    }
-
-    pub fn _append(self: *parser.Document, nodes: []const Node.NodeOrText) !void {
-        return Node.append(parser.documentToNode(self), nodes);
-    }
-
-    pub fn _replaceChildren(self: *parser.Document, nodes: []const Node.NodeOrText) !void {
-        return Node.replaceChildren(parser.documentToNode(self), nodes);
-    }
-
-    pub fn _createTreeWalker(_: *parser.Document, root: *parser.Node, what_to_show: ?u32, filter: ?TreeWalker.TreeWalkerOpts) !TreeWalker {
-        return try TreeWalker.init(root, what_to_show, filter);
-    }
-
-    pub fn getActiveElement(self: *parser.Document, page: *Page) !?*parser.Element {
-        if (page.getNodeState(@alignCast(@ptrCast(self)))) |state| {
-            if (state.active_element) |ae| {
-                return ae;
-            }
-        }
-
-        if (try parser.documentHTMLBody(page.window.document)) |body| {
-            return @alignCast(@ptrCast(body));
-        }
-
-        return try parser.documentGetDocumentElement(self);
-    }
-
-    pub fn get_activeElement(self: *parser.Document, page: *Page) !?ElementUnion {
-        const ae = (try getActiveElement(self, page)) orelse return null;
-        return try Element.toInterface(ae);
-    }
-
-    // TODO: some elements can't be focused, like if they're disabled
-    // but there doesn't seem to be a generic way to check this. For example
-    // we could look for the "disabled" attribute, but that's only meaningful
-    // on certain types, and libdom's vtable doesn't seem to expose this.
-    pub fn setFocus(self: *parser.Document, e: *parser.ElementHTML, page: *Page) !void {
-        const state = try page.getOrCreateNodeState(@alignCast(@ptrCast(self)));
-        state.active_element = @ptrCast(e);
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Document" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{
-        .url = "about:blank",
-    });
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "document.__proto__.__proto__.constructor.name", "Document" },
-        .{ "document.__proto__.__proto__.__proto__.constructor.name", "Node" },
-        .{ "document.__proto__.__proto__.__proto__.__proto__.constructor.name", "EventTarget" },
-
-        .{ "let newdoc = new Document()", "undefined" },
-        .{ "newdoc.documentElement", "null" },
-        .{ "newdoc.children.length", "0" },
-        .{ "newdoc.getElementsByTagName('*').length", "0" },
-        .{ "newdoc.getElementsByTagName('*').item(0)", "null" },
-        .{ "newdoc.inputEncoding === document.inputEncoding", "true" },
-        .{ "newdoc.documentURI === document.documentURI", "true" },
-        .{ "newdoc.URL === document.URL", "true" },
-        .{ "newdoc.compatMode === document.compatMode", "true" },
-        .{ "newdoc.characterSet === document.characterSet", "true" },
-        .{ "newdoc.charset === document.charset", "true" },
-        .{ "newdoc.contentType === document.contentType", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let getElementById = document.getElementById('content')", "undefined" },
-        .{ "getElementById.constructor.name", "HTMLDivElement" },
-        .{ "getElementById.localName", "div" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let getElementsByTagName = document.getElementsByTagName('p')", "undefined" },
-        .{ "getElementsByTagName.length", "2" },
-        .{ "getElementsByTagName.item(0).localName", "p" },
-        .{ "getElementsByTagName.item(1).localName", "p" },
-        .{ "let getElementsByTagNameAll = document.getElementsByTagName('*')", "undefined" },
-        .{ "getElementsByTagNameAll.length", "8" },
-        .{ "getElementsByTagNameAll.item(0).localName", "html" },
-        .{ "getElementsByTagNameAll.item(7).localName", "p" },
-        .{ "getElementsByTagNameAll.namedItem('para-empty-child').localName", "span" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let ok = document.getElementsByClassName('ok')", "undefined" },
-        .{ "ok.length", "2" },
-        .{ "let empty = document.getElementsByClassName('empty')", "undefined" },
-        .{ "empty.length", "1" },
-        .{ "let emptyok = document.getElementsByClassName('empty ok')", "undefined" },
-        .{ "emptyok.length", "1" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let e = document.documentElement", "undefined" },
-        .{ "e.localName", "html" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.characterSet", "UTF-8" },
-        .{ "document.charset", "UTF-8" },
-        .{ "document.inputEncoding", "UTF-8" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.compatMode", "CSS1Compat" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.contentType", "text/html" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.documentURI", "about:blank" },
-        .{ "document.URL", "about:blank" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let impl = document.implementation", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let d = new Document()", "undefined" },
-        .{ "d.characterSet", "UTF-8" },
-        .{ "d.URL", "about:blank" },
-        .{ "d.documentURI", "about:blank" },
-        .{ "d.compatMode", "CSS1Compat" },
-        .{ "d.contentType", "text/html" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var v = document.createDocumentFragment()", "undefined" },
-        .{ "v.nodeName", "#document-fragment" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var v = document.createTextNode('foo')", "undefined" },
-        .{ "v.nodeName", "#text" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var v = document.createCDATASection('foo')", "undefined" },
-        .{ "v.nodeName", "#cdata-section" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var v = document.createComment('foo')", "undefined" },
-        .{ "v.nodeName", "#comment" },
-        .{ "let v2 = v.cloneNode()", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let pi = document.createProcessingInstruction('foo', 'bar')", "undefined" },
-        .{ "pi.target", "foo" },
-        .{ "let pi2 = pi.cloneNode()", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let nimp = document.getElementById('content')", "undefined" },
-        .{ "var v = document.importNode(nimp)", "undefined" },
-        .{ "v.nodeName", "DIV" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var v = document.createAttribute('foo')", "undefined" },
-        .{ "v.nodeName", "foo" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.children.length", "1" },
-        .{ "document.children.item(0).nodeName", "HTML" },
-        .{ "document.firstElementChild.nodeName", "HTML" },
-        .{ "document.lastElementChild.nodeName", "HTML" },
-        .{ "document.childElementCount", "1" },
-
-        .{ "let nd = new Document()", "undefined" },
-        .{ "nd.children.length", "0" },
-        .{ "nd.children.item(0)", "null" },
-        .{ "nd.firstElementChild", "null" },
-        .{ "nd.lastElementChild", "null" },
-        .{ "nd.childElementCount", "0" },
-
-        .{ "let emptydoc = document.createElement('html')", "undefined" },
-        .{ "emptydoc.prepend(document.createElement('html'))", "undefined" },
-
-        .{ "let emptydoc2 = document.createElement('html')", "undefined" },
-        .{ "emptydoc2.append(document.createElement('html'))", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.querySelector('')", "null" },
-        .{ "document.querySelector('*').nodeName", "HTML" },
-        .{ "document.querySelector('#content').id", "content" },
-        .{ "document.querySelector('#para').id", "para" },
-        .{ "document.querySelector('.ok').id", "link" },
-        .{ "document.querySelector('a ~ p').id", "para-empty" },
-        .{ "document.querySelector(':root').nodeName", "HTML" },
-
-        .{ "document.querySelectorAll('p').length", "2" },
-        .{
-            \\  Array.from(document.querySelectorAll('#content > p#para-empty'))
-            \\    .map(row => row.querySelector('span').textContent)
-            \\    .length;
-            ,
-            "1",
-        },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.activeElement === document.body", "true" },
-        .{ "document.getElementById('link').focus()", "undefined" },
-        .{ "document.activeElement === document.getElementById('link')", "true" },
-    }, .{});
-
-    // this test breaks the doc structure, keep it at the end of the test
-    // suite.
-    try runner.testCases(&.{
-        .{ "let nadop = document.getElementById('content')", "undefined" },
-        .{ "var v = document.adoptNode(nadop)", "undefined" },
-        .{ "v.nodeName", "DIV" },
-    }, .{});
-
-    const Case = testing.JsRunner.Case;
-    const tags = comptime parser.Tag.all();
-    var createElements: [(tags.len) * 2]Case = undefined;
-    inline for (tags, 0..) |tag, i| {
-        const tag_name = @tagName(tag);
-        createElements[i * 2] = Case{
-            "var " ++ tag_name ++ "Elem = document.createElement('" ++ tag_name ++ "')",
-            "undefined",
-        };
-        createElements[(i * 2) + 1] = Case{
-            tag_name ++ "Elem.localName",
-            tag_name,
-        };
-    }
-    try runner.testCases(&createElements, .{});
-}

src/browser/dom/document_fragment.zig

@@ -1,74 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const Node = @import("node.zig").Node;
-
-// WEB IDL https://dom.spec.whatwg.org/#documentfragment
-pub const DocumentFragment = struct {
-    pub const Self = parser.DocumentFragment;
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    pub fn constructor(page: *const Page) !*parser.DocumentFragment {
-        return parser.documentCreateDocumentFragment(
-            parser.documentHTMLToDocument(page.window.document),
-        );
-    }
-
-    pub fn _isEqualNode(self: *parser.DocumentFragment, other_node: *parser.Node) !bool {
-        const other_type = try parser.nodeType(other_node);
-        if (other_type != .document_fragment) {
-            return false;
-        }
-        _ = self;
-        return true;
-    }
-
-    pub fn _prepend(self: *parser.DocumentFragment, nodes: []const Node.NodeOrText) !void {
-        return Node.prepend(parser.documentFragmentToNode(self), nodes);
-    }
-
-    pub fn _append(self: *parser.DocumentFragment, nodes: []const Node.NodeOrText) !void {
-        return Node.append(parser.documentFragmentToNode(self), nodes);
-    }
-
-    pub fn _replaceChildren(self: *parser.DocumentFragment, nodes: []const Node.NodeOrText) !void {
-        return Node.replaceChildren(parser.documentFragmentToNode(self), nodes);
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.DocumentFragment" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "const dc = new DocumentFragment()", "undefined" },
-        .{ "dc.constructor.name", "DocumentFragment" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "const dc1 = new DocumentFragment()", "undefined" },
-        .{ "const dc2 = new DocumentFragment()", "undefined" },
-        .{ "dc1.isEqualNode(dc1)", "true" },
-        .{ "dc1.isEqualNode(dc2)", "true" },
-    }, .{});
-}

src/browser/dom/document_type.zig

@@ -1,80 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-
-const Node = @import("node.zig").Node;
-
-// WEB IDL https://dom.spec.whatwg.org/#documenttype
-pub const DocumentType = struct {
-    pub const Self = parser.DocumentType;
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    pub fn get_name(self: *parser.DocumentType) ![]const u8 {
-        return try parser.documentTypeGetName(self);
-    }
-
-    pub fn get_publicId(self: *parser.DocumentType) ![]const u8 {
-        return try parser.documentTypeGetPublicId(self);
-    }
-
-    pub fn get_systemId(self: *parser.DocumentType) ![]const u8 {
-        return try parser.documentTypeGetSystemId(self);
-    }
-
-    // netsurf's DocumentType doesn't implement the dom_node_get_attributes
-    // and thus will crash if we try to call nodeIsEqualNode.
-    pub fn _isEqualNode(self: *parser.DocumentType, other_node: *parser.Node) !bool {
-        if (try parser.nodeType(other_node) != .document_type) {
-            return false;
-        }
-
-        const other: *parser.DocumentType = @ptrCast(other_node);
-        if (std.mem.eql(u8, try get_name(self), try get_name(other)) == false) {
-            return false;
-        }
-        if (std.mem.eql(u8, try get_publicId(self), try get_publicId(other)) == false) {
-            return false;
-        }
-        if (std.mem.eql(u8, try get_systemId(self), try get_systemId(other)) == false) {
-            return false;
-        }
-        return true;
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.DocumentType" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let dt1 = document.implementation.createDocumentType('qname1', 'pid1', 'sys1');", "undefined" },
-        .{ "let dt2 = document.implementation.createDocumentType('qname2', 'pid2', 'sys2');", "undefined" },
-        .{ "let dt3 = document.implementation.createDocumentType('qname1', 'pid1', 'sys1');", "undefined" },
-        .{ "dt1.isEqualNode(dt1)", "true" },
-        .{ "dt1.isEqualNode(dt3)", "true" },
-        .{ "dt1.isEqualNode(dt2)", "false" },
-        .{ "dt2.isEqualNode(dt3)", "false" },
-        .{ "dt1.isEqualNode(document)", "false" },
-        .{ "document.isEqualNode(dt1)", "false" },
-    }, .{});
-}

src/browser/dom/dom.zig

@@ -1,47 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const DOMException = @import("exceptions.zig").DOMException;
-const EventTarget = @import("event_target.zig").EventTarget;
-const DOMImplementation = @import("implementation.zig").DOMImplementation;
-const NamedNodeMap = @import("namednodemap.zig").NamedNodeMap;
-const DOMTokenList = @import("token_list.zig");
-const NodeList = @import("nodelist.zig");
-const Node = @import("node.zig");
-const MutationObserver = @import("mutation_observer.zig");
-const IntersectionObserver = @import("intersection_observer.zig");
-const DOMParser = @import("dom_parser.zig").DOMParser;
-const TreeWalker = @import("tree_walker.zig").TreeWalker;
-const NodeFilter = @import("node_filter.zig").NodeFilter;
-
-pub const Interfaces = .{
-    DOMException,
-    EventTarget,
-    DOMImplementation,
-    NamedNodeMap,
-    NamedNodeMap.Iterator,
-    DOMTokenList.Interfaces,
-    NodeList.Interfaces,
-    Node.Node,
-    Node.Interfaces,
-    MutationObserver.Interfaces,
-    IntersectionObserver.Interfaces,
-    DOMParser,
-    TreeWalker,
-    NodeFilter,
-};

src/browser/dom/dom_parser.zig

@@ -1,47 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const parser = @import("../netsurf.zig");
-
-// https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
-pub const DOMParser = struct {
-    pub fn constructor() !DOMParser {
-        return .{};
-    }
-
-    pub fn _parseFromString(_: *DOMParser, string: []const u8, mime_type: []const u8) !*parser.DocumentHTML {
-        if (!std.mem.eql(u8, mime_type, "text/html")) {
-            // TODO: Support XML
-            return error.TypeError;
-        }
-
-        return try parser.documentHTMLParseFromStr(string);
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.DOMParser" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "const dp = new DOMParser()", "undefined" },
-        .{ "dp.parseFromString('<div>abc</div>', 'text/html')", "[object HTMLDocument]" },
-    }, .{});
-}

src/browser/dom/element.zig

@@ -1,669 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const css = @import("css.zig");
-const log = @import("../../log.zig");
-const dump = @import("../dump.zig");
-const collection = @import("html_collection.zig");
-
-const Node = @import("node.zig").Node;
-const Walker = @import("walker.zig").WalkerDepthFirst;
-const NodeList = @import("nodelist.zig").NodeList;
-const HTMLElem = @import("../html/elements.zig");
-pub const Union = @import("../html/elements.zig").Union;
-
-// WEB IDL https://dom.spec.whatwg.org/#element
-pub const Element = struct {
-    pub const Self = parser.Element;
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    pub const DOMRect = struct {
-        x: f64,
-        y: f64,
-        width: f64,
-        height: f64,
-    };
-
-    pub fn toInterface(e: *parser.Element) !Union {
-        return try HTMLElem.toInterface(Union, e);
-        // SVGElement and MathML are not supported yet.
-    }
-
-    // JS funcs
-    // --------
-
-    pub fn get_namespaceURI(self: *parser.Element) !?[]const u8 {
-        return try parser.nodeGetNamespace(parser.elementToNode(self));
-    }
-
-    pub fn get_prefix(self: *parser.Element) !?[]const u8 {
-        return try parser.nodeGetPrefix(parser.elementToNode(self));
-    }
-
-    pub fn get_localName(self: *parser.Element) ![]const u8 {
-        return try parser.nodeLocalName(parser.elementToNode(self));
-    }
-
-    pub fn get_tagName(self: *parser.Element) ![]const u8 {
-        return try parser.nodeName(parser.elementToNode(self));
-    }
-
-    pub fn get_id(self: *parser.Element) ![]const u8 {
-        return try parser.elementGetAttribute(self, "id") orelse "";
-    }
-
-    pub fn set_id(self: *parser.Element, id: []const u8) !void {
-        return try parser.elementSetAttribute(self, "id", id);
-    }
-
-    pub fn get_className(self: *parser.Element) ![]const u8 {
-        return try parser.elementGetAttribute(self, "class") orelse "";
-    }
-
-    pub fn set_className(self: *parser.Element, class: []const u8) !void {
-        return try parser.elementSetAttribute(self, "class", class);
-    }
-
-    pub fn get_slot(self: *parser.Element) ![]const u8 {
-        return try parser.elementGetAttribute(self, "slot") orelse "";
-    }
-
-    pub fn set_slot(self: *parser.Element, slot: []const u8) !void {
-        return try parser.elementSetAttribute(self, "slot", slot);
-    }
-
-    pub fn get_classList(self: *parser.Element) !*parser.TokenList {
-        return try parser.tokenListCreate(self, "class");
-    }
-
-    pub fn get_attributes(self: *parser.Element) !*parser.NamedNodeMap {
-        // An element must have non-nil attributes.
-        return try parser.nodeGetAttributes(parser.elementToNode(self)) orelse unreachable;
-    }
-
-    pub fn get_innerHTML(self: *parser.Element, page: *Page) ![]const u8 {
-        var buf = std.ArrayList(u8).init(page.arena);
-        try dump.writeChildren(parser.elementToNode(self), buf.writer());
-        return buf.items;
-    }
-
-    pub fn get_outerHTML(self: *parser.Element, page: *Page) ![]const u8 {
-        var buf = std.ArrayList(u8).init(page.arena);
-        try dump.writeNode(parser.elementToNode(self), buf.writer());
-        return buf.items;
-    }
-
-    pub fn set_innerHTML(self: *parser.Element, str: []const u8) !void {
-        const node = parser.elementToNode(self);
-        const doc = try parser.nodeOwnerDocument(node) orelse return parser.DOMError.WrongDocument;
-        // parse the fragment
-        const fragment = try parser.documentParseFragmentFromStr(doc, str);
-
-        // remove existing children
-        try Node.removeChildren(node);
-
-        // get fragment body children
-        const children = try parser.documentFragmentBodyChildren(fragment) orelse return;
-
-        // append children to the node
-        const ln = try parser.nodeListLength(children);
-        for (0..ln) |_| {
-            // always index 0, because ndoeAppendChild moves the node out of
-            // the nodeList and into the new tree
-            const child = try parser.nodeListItem(children, 0) orelse continue;
-            _ = try parser.nodeAppendChild(node, child);
-        }
-    }
-
-    // The closest() method of the Element interface traverses the element and its parents (heading toward the document root) until it finds a node that matches the specified CSS selector.
-    // Returns the closest ancestor Element or itself, which matches the selectors. If there are no such element, null.
-    pub fn _closest(self: *parser.Element, selector: []const u8, page: *Page) !?*parser.Element {
-        const cssParse = @import("../css/css.zig").parse;
-        const CssNodeWrap = @import("../css/libdom.zig").Node;
-        const select = try cssParse(page.call_arena, selector, .{});
-
-        var current: CssNodeWrap = .{ .node = parser.elementToNode(self) };
-        while (true) {
-            if (try select.match(current)) {
-                if (!current.isElement()) {
-                    log.err(.browser, "closest invalid type", .{ .type = try current.tag() });
-                    return null;
-                }
-                return parser.nodeToElement(current.node);
-            }
-            current = try current.parent() orelse return null;
-        }
-    }
-
-    pub fn _hasAttributes(self: *parser.Element) !bool {
-        return try parser.nodeHasAttributes(parser.elementToNode(self));
-    }
-
-    pub fn _getAttribute(self: *parser.Element, qname: []const u8) !?[]const u8 {
-        return try parser.elementGetAttribute(self, qname);
-    }
-
-    pub fn _getAttributeNS(self: *parser.Element, ns: []const u8, qname: []const u8) !?[]const u8 {
-        return try parser.elementGetAttributeNS(self, ns, qname);
-    }
-
-    pub fn _setAttribute(self: *parser.Element, qname: []const u8, value: []const u8) !void {
-        return try parser.elementSetAttribute(self, qname, value);
-    }
-
-    pub fn _setAttributeNS(self: *parser.Element, ns: []const u8, qname: []const u8, value: []const u8) !void {
-        return try parser.elementSetAttributeNS(self, ns, qname, value);
-    }
-
-    pub fn _removeAttribute(self: *parser.Element, qname: []const u8) !void {
-        return try parser.elementRemoveAttribute(self, qname);
-    }
-
-    pub fn _removeAttributeNS(self: *parser.Element, ns: []const u8, qname: []const u8) !void {
-        return try parser.elementRemoveAttributeNS(self, ns, qname);
-    }
-
-    pub fn _hasAttribute(self: *parser.Element, qname: []const u8) !bool {
-        return try parser.elementHasAttribute(self, qname);
-    }
-
-    pub fn _hasAttributeNS(self: *parser.Element, ns: []const u8, qname: []const u8) !bool {
-        return try parser.elementHasAttributeNS(self, ns, qname);
-    }
-
-    // https://dom.spec.whatwg.org/#dom-element-toggleattribute
-    pub fn _toggleAttribute(self: *parser.Element, qname: []u8, force: ?bool) !bool {
-        _ = std.ascii.lowerString(qname, qname);
-        const exists = try parser.elementHasAttribute(self, qname);
-
-        // If attribute is null, then:
-        if (!exists) {
-            // If force is not given or is true, create an attribute whose
-            // local name is qualifiedName, value is the empty string and node
-            // document is this’s node document, then append this attribute to
-            // this, and then return true.
-            if (force == null or force.?) {
-                try parser.elementSetAttribute(self, qname, "");
-                return true;
-            }
-            if (try parser.validateName(qname) == false) {
-                return parser.DOMError.InvalidCharacter;
-            }
-
-            // Return false.
-            return false;
-        }
-
-        // Otherwise, if force is not given or is false, remove an attribute
-        // given qualifiedName and this, and then return false.
-        if (force == null or !force.?) {
-            try parser.elementRemoveAttribute(self, qname);
-            return false;
-        }
-
-        // Return true.
-        return true;
-    }
-
-    pub fn _getAttributeNode(self: *parser.Element, name: []const u8) !?*parser.Attribute {
-        return try parser.elementGetAttributeNode(self, name);
-    }
-
-    pub fn _getAttributeNodeNS(self: *parser.Element, ns: []const u8, name: []const u8) !?*parser.Attribute {
-        return try parser.elementGetAttributeNodeNS(self, ns, name);
-    }
-
-    pub fn _setAttributeNode(self: *parser.Element, attr: *parser.Attribute) !?*parser.Attribute {
-        return try parser.elementSetAttributeNode(self, attr);
-    }
-
-    pub fn _setAttributeNodeNS(self: *parser.Element, attr: *parser.Attribute) !?*parser.Attribute {
-        return try parser.elementSetAttributeNodeNS(self, attr);
-    }
-
-    pub fn _removeAttributeNode(self: *parser.Element, attr: *parser.Attribute) !*parser.Attribute {
-        return try parser.elementRemoveAttributeNode(self, attr);
-    }
-
-    pub fn _getElementsByTagName(
-        self: *parser.Element,
-        tag_name: []const u8,
-        page: *Page,
-    ) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByTagName(
-            page.arena,
-            parser.elementToNode(self),
-            tag_name,
-            false,
-        );
-    }
-
-    pub fn _getElementsByClassName(
-        self: *parser.Element,
-        classNames: []const u8,
-        page: *Page,
-    ) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByClassName(
-            page.arena,
-            parser.elementToNode(self),
-            classNames,
-            false,
-        );
-    }
-
-    // ParentNode
-    // https://dom.spec.whatwg.org/#parentnode
-    pub fn get_children(self: *parser.Element) !collection.HTMLCollection {
-        return try collection.HTMLCollectionChildren(parser.elementToNode(self), false);
-    }
-
-    pub fn get_firstElementChild(self: *parser.Element) !?Union {
-        var children = try get_children(self);
-        return try children._item(0);
-    }
-
-    pub fn get_lastElementChild(self: *parser.Element) !?Union {
-        // TODO we could check the last child node first, if it's an element,
-        // we can return it directly instead of looping twice over the
-        // children.
-        var children = try get_children(self);
-        const ln = try children.get_length();
-        if (ln == 0) return null;
-        return try children._item(ln - 1);
-    }
-
-    pub fn get_childElementCount(self: *parser.Element) !u32 {
-        var children = try get_children(self);
-        return try children.get_length();
-    }
-
-    // NonDocumentTypeChildNode
-    // https://dom.spec.whatwg.org/#interface-nondocumenttypechildnode
-    pub fn get_previousElementSibling(self: *parser.Element) !?Union {
-        const res = try parser.nodePreviousElementSibling(parser.elementToNode(self));
-        if (res == null) return null;
-        return try HTMLElem.toInterface(HTMLElem.Union, res.?);
-    }
-
-    pub fn get_nextElementSibling(self: *parser.Element) !?Union {
-        const res = try parser.nodeNextElementSibling(parser.elementToNode(self));
-        if (res == null) return null;
-        return try HTMLElem.toInterface(HTMLElem.Union, res.?);
-    }
-
-    fn getElementById(self: *parser.Element, id: []const u8) !?*parser.Node {
-        // walk over the node tree fo find the node by id.
-        const root = parser.elementToNode(self);
-        const walker = Walker{};
-        var next: ?*parser.Node = null;
-        while (true) {
-            next = try walker.get_next(root, next) orelse return null;
-            // ignore non-element nodes.
-            if (try parser.nodeType(next.?) != .element) {
-                continue;
-            }
-            const e = parser.nodeToElement(next.?);
-            if (std.mem.eql(u8, id, try get_id(e))) return next;
-        }
-    }
-
-    pub fn _querySelector(self: *parser.Element, selector: []const u8, page: *Page) !?Union {
-        if (selector.len == 0) return null;
-
-        const n = try css.querySelector(page.arena, parser.elementToNode(self), selector);
-
-        if (n == null) return null;
-
-        return try toInterface(parser.nodeToElement(n.?));
-    }
-
-    pub fn _querySelectorAll(self: *parser.Element, selector: []const u8, page: *Page) !NodeList {
-        return css.querySelectorAll(page.arena, parser.elementToNode(self), selector);
-    }
-
-    pub fn _prepend(self: *parser.Element, nodes: []const Node.NodeOrText) !void {
-        return Node.prepend(parser.elementToNode(self), nodes);
-    }
-
-    pub fn _append(self: *parser.Element, nodes: []const Node.NodeOrText) !void {
-        return Node.append(parser.elementToNode(self), nodes);
-    }
-
-    pub fn _before(self: *parser.Element, nodes: []const Node.NodeOrText) !void {
-        const ref_node = parser.elementToNode(self);
-        return Node.before(ref_node, nodes);
-    }
-
-    pub fn _after(self: *parser.Element, nodes: []const Node.NodeOrText) !void {
-        const ref_node = parser.elementToNode(self);
-        return Node.after(ref_node, nodes);
-    }
-
-    pub fn _replaceChildren(self: *parser.Element, nodes: []const Node.NodeOrText) !void {
-        return Node.replaceChildren(parser.elementToNode(self), nodes);
-    }
-
-    // A DOMRect object providing information about the size of an element and its position relative to the viewport.
-    // Returns a 0 DOMRect object if the element is eventually detached from the main window
-    pub fn _getBoundingClientRect(self: *parser.Element, page: *Page) !DOMRect {
-        // Since we are lazy rendering we need to do this check. We could store the renderer in a viewport such that it could cache these, but it would require tracking changes.
-        if (!try page.isNodeAttached(parser.elementToNode(self))) {
-            return DOMRect{ .x = 0, .y = 0, .width = 0, .height = 0 };
-        }
-        return page.renderer.getRect(self);
-    }
-
-    // Returns a collection of DOMRect objects that indicate the bounding rectangles for each CSS border box in a client.
-    // We do not render so it only always return the element's bounding rect.
-    // Returns an empty array if the element is eventually detached from the main window
-    pub fn _getClientRects(self: *parser.Element, page: *Page) ![]DOMRect {
-        if (!try page.isNodeAttached(parser.elementToNode(self))) {
-            return &.{};
-        }
-        const heap_ptr = try page.call_arena.create(DOMRect);
-        heap_ptr.* = try page.renderer.getRect(self);
-        return heap_ptr[0..1];
-    }
-
-    pub fn get_clientWidth(_: *parser.Element, page: *Page) u32 {
-        return page.renderer.width();
-    }
-
-    pub fn get_clientHeight(_: *parser.Element, page: *Page) u32 {
-        return page.renderer.height();
-    }
-
-    pub fn _matches(self: *parser.Element, selectors: []const u8, page: *Page) !bool {
-        const cssParse = @import("../css/css.zig").parse;
-        const CssNodeWrap = @import("../css/libdom.zig").Node;
-        const s = try cssParse(page.call_arena, selectors, .{});
-        return s.match(CssNodeWrap{ .node = parser.elementToNode(self) });
-    }
-
-    pub fn _scrollIntoViewIfNeeded(_: *parser.Element, center_if_needed: ?bool) void {
-        _ = center_if_needed;
-    }
-
-    const CheckVisibilityOpts = struct {
-        contentVisibilityAuto: bool,
-        opacityProperty: bool,
-        visibilityProperty: bool,
-    };
-
-    pub fn _checkVisibility(self: *parser.Element, opts: ?CheckVisibilityOpts) bool {
-        _ = self;
-        _ = opts;
-        return true;
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Element" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let g = document.getElementById('content')", "undefined" },
-        .{ "g.namespaceURI", "http://www.w3.org/1999/xhtml" },
-        .{ "g.prefix", "null" },
-        .{ "g.localName", "div" },
-        .{ "g.tagName", "DIV" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let gs = document.getElementById('content')", "undefined" },
-        .{ "gs.id", "content" },
-        .{ "gs.id = 'foo'", "foo" },
-        .{ "gs.id", "foo" },
-        .{ "gs.id = 'content'", "content" },
-        .{ "gs.className", "" },
-        .{ "let gs2 = document.getElementById('para-empty')", "undefined" },
-        .{ "gs2.className", "ok empty" },
-        .{ "gs2.className = 'foo bar baz'", "foo bar baz" },
-        .{ "gs2.className", "foo bar baz" },
-        .{ "gs2.className = 'ok empty'", "ok empty" },
-        .{ "let cl = gs2.classList", "undefined" },
-        .{ "cl.length", "2" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "const el2 = document.createElement('div');", "undefined" },
-        .{ "el2.id = 'closest'; el2.className = 'ok';", "ok" },
-        .{ "el2.closest('#closest')", "[object HTMLDivElement]" },
-        .{ "el2.closest('.ok')", "[object HTMLDivElement]" },
-        .{ "el2.closest('#9000')", "null" },
-        .{ "el2.closest('.notok')", "null" },
-
-        .{ "const sp = document.createElement('span');", "undefined" },
-        .{ "el2.appendChild(sp);", "[object HTMLSpanElement]" },
-        .{ "sp.closest('#closest')", "[object HTMLDivElement]" },
-        .{ "sp.closest('#9000')", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let a = document.getElementById('content')", "undefined" },
-        .{ "a.hasAttributes()", "true" },
-        .{ "a.attributes.length", "1" },
-        .{ "a.getAttribute('id')", "content" },
-        .{ "a.attributes['id'].value", "content" },
-        .{
-            \\ let x = '';
-            \\ for (const attr of a.attributes) {
-            \\   x += attr.name + '=' + attr.value;
-            \\ }
-            \\ x;
-            ,
-            "id=content",
-        },
-
-        .{ "a.hasAttribute('foo')", "false" },
-        .{ "a.getAttribute('foo')", "null" },
-
-        .{ "a.setAttribute('foo', 'bar')", "undefined" },
-        .{ "a.hasAttribute('foo')", "true" },
-        .{ "a.getAttribute('foo')", "bar" },
-
-        .{ "a.setAttribute('foo', 'baz')", "undefined" },
-        .{ "a.hasAttribute('foo')", "true" },
-        .{ "a.getAttribute('foo')", "baz" },
-
-        .{ "a.removeAttribute('foo')", "undefined" },
-        .{ "a.hasAttribute('foo')", "false" },
-        .{ "a.getAttribute('foo')", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let b = document.getElementById('content')", "undefined" },
-        .{ "b.toggleAttribute('foo')", "true" },
-        .{ "b.hasAttribute('foo')", "true" },
-        .{ "b.getAttribute('foo')", "" },
-
-        .{ "b.toggleAttribute('foo')", "false" },
-        .{ "b.hasAttribute('foo')", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let c = document.getElementById('content')", "undefined" },
-        .{ "c.children.length", "3" },
-        .{ "c.firstElementChild.nodeName", "A" },
-        .{ "c.lastElementChild.nodeName", "P" },
-        .{ "c.childElementCount", "3" },
-
-        .{ "c.prepend(document.createTextNode('foo'))", "undefined" },
-        .{ "c.append(document.createTextNode('bar'))", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let d = document.getElementById('para')", "undefined" },
-        .{ "d.previousElementSibling.nodeName", "P" },
-        .{ "d.nextElementSibling", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let e = document.getElementById('content')", "undefined" },
-        .{ "e.querySelector('foo')", "null" },
-        .{ "e.querySelector('#foo')", "null" },
-        .{ "e.querySelector('#link').id", "link" },
-        .{ "e.querySelector('#para').id", "para" },
-        .{ "e.querySelector('*').id", "link" },
-        .{ "e.querySelector('')", "null" },
-        .{ "e.querySelector('*').id", "link" },
-        .{ "e.querySelector('#content')", "null" },
-        .{ "e.querySelector('#para').id", "para" },
-        .{ "e.querySelector('.ok').id", "link" },
-        .{ "e.querySelector('a ~ p').id", "para-empty" },
-
-        .{ "e.querySelectorAll('foo').length", "0" },
-        .{ "e.querySelectorAll('#foo').length", "0" },
-        .{ "e.querySelectorAll('#link').length", "1" },
-        .{ "e.querySelectorAll('#link').item(0).id", "link" },
-        .{ "e.querySelectorAll('#para').length", "1" },
-        .{ "e.querySelectorAll('#para').item(0).id", "para" },
-        .{ "e.querySelectorAll('*').length", "4" },
-        .{ "e.querySelectorAll('p').length", "2" },
-        .{ "e.querySelectorAll('.ok').item(0).id", "link" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let f = document.getElementById('content')", "undefined" },
-        .{ "let ff = document.createAttribute('foo')", "undefined" },
-        .{ "f.setAttributeNode(ff)", "null" },
-        .{ "f.getAttributeNode('foo').name", "foo" },
-        .{ "f.removeAttributeNode(ff).name", "foo" },
-        .{ "f.getAttributeNode('bar')", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.getElementById('para').innerHTML", " And" },
-        .{ "document.getElementById('para-empty').innerHTML.trim()", "<span id=\"para-empty-child\"></span>" },
-
-        .{ "let h = document.getElementById('para-empty')", "undefined" },
-        .{ "const prev = h.innerHTML", "undefined" },
-        .{ "h.innerHTML = '<p id=\"hello\">hello world</p>'", "<p id=\"hello\">hello world</p>" },
-        .{ "h.innerHTML", "<p id=\"hello\">hello world</p>" },
-        .{ "h.firstChild.nodeName", "P" },
-        .{ "h.firstChild.id", "hello" },
-        .{ "h.firstChild.textContent", "hello world" },
-        .{ "h.innerHTML = prev; true", "true" },
-        .{ "document.getElementById('para-empty').innerHTML.trim()", "<span id=\"para-empty-child\"></span>" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.getElementById('para').outerHTML", "<p id=\"para\"> And</p>" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.getElementById('para').clientWidth", "1" },
-        .{ "document.getElementById('para').clientHeight", "1" },
-
-        .{ "let r1 = document.getElementById('para').getBoundingClientRect()", "undefined" },
-        .{ "r1.x", "0" },
-        .{ "r1.y", "0" },
-        .{ "r1.width", "1" },
-        .{ "r1.height", "1" },
-
-        .{ "let r2 = document.getElementById('content').getBoundingClientRect()", "undefined" },
-        .{ "r2.x", "1" },
-        .{ "r2.y", "0" },
-        .{ "r2.width", "1" },
-        .{ "r2.height", "1" },
-
-        .{ "let r3 = document.getElementById('para').getBoundingClientRect()", "undefined" },
-        .{ "r3.x", "0" },
-        .{ "r3.y", "0" },
-        .{ "r3.width", "1" },
-        .{ "r3.height", "1" },
-
-        .{ "document.getElementById('para').clientWidth", "2" },
-        .{ "document.getElementById('para').clientHeight", "1" },
-
-        .{ "let r4 = document.createElement('div').getBoundingClientRect()", null },
-        .{ "r4.x", "0" },
-        .{ "r4.y", "0" },
-        .{ "r4.width", "0" },
-        .{ "r4.height", "0" },
-
-        // Test setup causes WrongDocument or HierarchyRequest error unlike in chrome/firefox
-        // .{ // An element of another document, even if created from the main document, is not rendered.
-        //     \\ let div5 = document.createElement('div');
-        //     \\ const newDoc = document.implementation.createHTMLDocument("New Document");
-        //     \\ newDoc.body.appendChild(div5);
-        //     \\ let r5 = div5.getBoundingClientRect();
-        //     ,
-        //     null,
-        // },
-        // .{ "r5.x", "0" },
-        // .{ "r5.y", "0" },
-        // .{ "r5.width", "0" },
-        // .{ "r5.height", "0" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "const el = document.createElement('div');", "undefined" },
-        .{ "el.id = 'matches'; el.className = 'ok';", "ok" },
-        .{ "el.matches('#matches')", "true" },
-        .{ "el.matches('.ok')", "true" },
-        .{ "el.matches('#9000')", "false" },
-        .{ "el.matches('.notok')", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "const el3 = document.createElement('div');", "undefined" },
-        .{ "el3.scrollIntoViewIfNeeded();", "undefined" },
-        .{ "el3.scrollIntoViewIfNeeded(false);", "undefined" },
-    }, .{});
-
-    // before
-    try runner.testCases(&.{
-        .{ "const before_container = document.createElement('div');", "undefined" },
-        .{ "document.append(before_container);", "undefined" },
-        .{ "const b1 = document.createElement('div');", "undefined" },
-        .{ "before_container.append(b1);", "undefined" },
-
-        .{ "const b1_a = document.createElement('p');", "undefined" },
-        .{ "b1.before(b1_a, 'over 9000');", "undefined" },
-        .{ "before_container.innerHTML", "<p></p>over 9000<div></div>" },
-    }, .{});
-
-    // after
-    try runner.testCases(&.{
-        .{ "const after_container = document.createElement('div');", "undefined" },
-        .{ "document.append(after_container);", "undefined" },
-        .{ "const a1 = document.createElement('div');", "undefined" },
-        .{ "after_container.append(a1);", "undefined" },
-
-        .{ "const a1_a = document.createElement('p');", "undefined" },
-        .{ "a1.after('over 9000', a1_a);", "undefined" },
-        .{ "after_container.innerHTML", "<div></div>over 9000<p></p>" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var div1 = document.createElement('div');", null },
-        .{ "div1.innerHTML = \"  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>\"", null },
-        .{ "div1.getElementsByTagName('a').length", "1" },
-    }, .{});
-}

src/browser/dom/event_target.zig

@@ -1,237 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const Env = @import("../env.zig").Env;
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const EventHandler = @import("../events/event.zig").EventHandler;
-
-const DOMException = @import("exceptions.zig").DOMException;
-const Nod = @import("node.zig");
-
-// EventTarget interfaces
-pub const Union = Nod.Union;
-
-// EventTarget implementation
-pub const EventTarget = struct {
-    pub const Self = parser.EventTarget;
-    pub const Exception = DOMException;
-
-    pub fn toInterface(et: *parser.EventTarget, page: *Page) !Union {
-        // Not all targets are *parser.Nodes. page.zig emits a "load" event
-        // where the target is a Window, which cannot be cast directly to a node.
-        // Ideally, we'd remove this duality. Failing that, we'll need to embed
-        // data into the *parser.EventTarget should we need this for other types.
-        // For now, for the Window, which is a singleton, we can do this:
-        if (@intFromPtr(et) == @intFromPtr(&page.window.base)) {
-            return .{ .Window = &page.window };
-        }
-        return Nod.Node.toInterface(@as(*parser.Node, @ptrCast(et)));
-    }
-
-    // JS funcs
-    // --------
-    pub fn _addEventListener(
-        self: *parser.EventTarget,
-        typ: []const u8,
-        listener: EventHandler.Listener,
-        opts: ?EventHandler.Opts,
-        page: *Page,
-    ) !void {
-        _ = try EventHandler.register(page.arena, self, typ, listener, opts);
-    }
-
-    const RemoveEventListenerOpts = union(enum) {
-        opts: Opts,
-        capture: bool,
-
-        const Opts = struct {
-            capture: ?bool,
-        };
-    };
-
-    pub fn _removeEventListener(
-        self: *parser.EventTarget,
-        typ: []const u8,
-        listener: EventHandler.Listener,
-        opts_: ?RemoveEventListenerOpts,
-    ) !void {
-        var capture = false;
-        if (opts_) |opts| {
-            capture = switch (opts) {
-                .capture => |c| c,
-                .opts => |o| o.capture orelse false,
-            };
-        }
-
-        const cbk = (try listener.callback(self)) orelse return;
-
-        // check if event target has already this listener
-        const lst = try parser.eventTargetHasListener(
-            self,
-            typ,
-            capture,
-            cbk.id,
-        );
-        if (lst == null) {
-            return;
-        }
-
-        // remove listener
-        try parser.eventTargetRemoveEventListener(
-            self,
-            typ,
-            lst.?,
-            capture,
-        );
-    }
-
-    pub fn _dispatchEvent(self: *parser.EventTarget, event: *parser.Event) !bool {
-        return try parser.eventTargetDispatchEvent(self, event);
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.EventTarget" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let content = document.getElementById('content')", "undefined" },
-        .{ "let para = document.getElementById('para')", "undefined" },
-        // NOTE: as some event properties will change during the event dispatching phases
-        // we need to copy thoses values in order to check them afterwards
-        .{
-            \\ var nb = 0; var evt; var phase; var cur;
-            \\ function cbk(event) {
-            \\   evt = event;
-            \\   phase = event.eventPhase;
-            \\   cur = event.currentTarget;
-            \\   nb ++;
-            \\ }
-            ,
-            "undefined",
-        },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "content.addEventListener('basic', cbk)", "undefined" },
-        .{ "content.dispatchEvent(new Event('basic'))", "true" },
-        .{ "nb", "1" },
-        .{ "evt instanceof Event", "true" },
-        .{ "evt.type", "basic" },
-        .{ "phase", "2" },
-        .{ "cur.getAttribute('id')", "content" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0; evt = undefined; phase = undefined; cur = undefined", "undefined" },
-        .{ "para.dispatchEvent(new Event('basic'))", "true" },
-        .{ "nb", "0" }, // handler is not called, no capture, not the target, no bubbling
-        .{ "evt === undefined", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb  = 0", "0" },
-        .{ "content.addEventListener('basic', cbk)", "undefined" },
-        .{ "content.dispatchEvent(new Event('basic'))", "true" },
-        .{ "nb", "1" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb  = 0", "0" },
-        .{ "content.addEventListener('basic', cbk, true)", "undefined" },
-        .{ "content.dispatchEvent(new Event('basic'))", "true" },
-        .{ "nb", "2" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb  = 0", "0" },
-        .{ "content.removeEventListener('basic', cbk)", "undefined" },
-        .{ "content.dispatchEvent(new Event('basic'))", "true" },
-        .{ "nb", "1" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb  = 0", "0" },
-        .{ "content.removeEventListener('basic', cbk, {capture: true})", "undefined" },
-        .{ "content.dispatchEvent(new Event('basic'))", "true" },
-        .{ "nb", "0" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0; evt = undefined; phase = undefined; cur = undefined", "undefined" },
-        .{ "content.addEventListener('capture', cbk, true)", "undefined" },
-        .{ "content.dispatchEvent(new Event('capture'))", "true" },
-        .{ "nb", "1" },
-        .{ "evt instanceof Event", "true" },
-        .{ "evt.type", "capture" },
-        .{ "phase", "2" },
-        .{ "cur.getAttribute('id')", "content" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0; evt = undefined; phase = undefined; cur = undefined", "undefined" },
-        .{ "para.dispatchEvent(new Event('capture'))", "true" },
-        .{ "nb", "1" },
-        .{ "evt instanceof Event", "true" },
-        .{ "evt.type", "capture" },
-        .{ "phase", "1" },
-        .{ "cur.getAttribute('id')", "content" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0; evt = undefined; phase = undefined; cur = undefined", "undefined" },
-        .{ "content.addEventListener('bubbles', cbk)", "undefined" },
-        .{ "content.dispatchEvent(new Event('bubbles', {bubbles: true}))", "true" },
-        .{ "nb", "1" },
-        .{ "evt instanceof Event", "true" },
-        .{ "evt.type", "bubbles" },
-        .{ "evt.bubbles", "true" },
-        .{ "phase", "2" },
-        .{ "cur.getAttribute('id')", "content" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0; evt = undefined; phase = undefined; cur = undefined", "undefined" },
-        .{ "para.dispatchEvent(new Event('bubbles', {bubbles: true}))", "true" },
-        .{ "nb", "1" },
-        .{ "evt instanceof Event", "true" },
-        .{ "evt.type", "bubbles" },
-        .{ "phase", "3" },
-        .{ "cur.getAttribute('id')", "content" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "const obj1 = {calls: 0, handleEvent: function() { this.calls += 1; } };", null },
-        .{ "content.addEventListener('he', obj1);", null },
-        .{ "content.dispatchEvent(new Event('he'));", null },
-        .{ "obj1.calls", "1" },
-
-        .{ "content.removeEventListener('he', obj1);", null },
-        .{ "content.dispatchEvent(new Event('he'));", null },
-        .{ "obj1.calls", "1" },
-    }, .{});
-
-    // doesn't crash on null receiver
-    try runner.testCases(&.{
-        .{ "content.addEventListener('he2', null);", null },
-        .{ "content.dispatchEvent(new Event('he2'));", null },
-    }, .{});
-}

src/browser/dom/exceptions.zig

@@ -1,191 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const allocPrint = std.fmt.allocPrint;
-
-const parser = @import("../netsurf.zig");
-
-// https://webidl.spec.whatwg.org/#idl-DOMException
-pub const DOMException = struct {
-    err: parser.DOMError,
-    str: []const u8,
-
-    pub const ErrorSet = parser.DOMError;
-
-    // static attributes
-    pub const _INDEX_SIZE_ERR = 1;
-    pub const _DOMSTRING_SIZE_ERR = 2;
-    pub const _HIERARCHY_REQUEST_ERR = 3;
-    pub const _WRONG_DOCUMENT_ERR = 4;
-    pub const _INVALID_CHARACTER_ERR = 5;
-    pub const _NO_DATA_ALLOWED_ERR = 6;
-    pub const _NO_MODIFICATION_ALLOWED_ERR = 7;
-    pub const _NOT_FOUND_ERR = 8;
-    pub const _NOT_SUPPORTED_ERR = 9;
-    pub const _INUSE_ATTRIBUTE_ERR = 10;
-    pub const _INVALID_STATE_ERR = 11;
-    pub const _SYNTAX_ERR = 12;
-    pub const _INVALID_MODIFICATION_ERR = 13;
-    pub const _NAMESPACE_ERR = 14;
-    pub const _INVALID_ACCESS_ERR = 15;
-    pub const _VALIDATION_ERR = 16;
-    pub const _TYPE_MISMATCH_ERR = 17;
-    pub const _SECURITY_ERR = 18;
-    pub const _NETWORK_ERR = 19;
-    pub const _ABORT_ERR = 20;
-    pub const _URL_MISMATCH_ERR = 21;
-    pub const _QUOTA_EXCEEDED_ERR = 22;
-    pub const _TIMEOUT_ERR = 23;
-    pub const _INVALID_NODE_TYPE_ERR = 24;
-    pub const _DATA_CLONE_ERR = 25;
-
-    // TODO: deinit
-    pub fn init(alloc: std.mem.Allocator, err: anyerror, callerName: []const u8) !DOMException {
-        const errCast = @as(parser.DOMError, @errorCast(err));
-        const errName = DOMException.name(errCast);
-        const str = switch (errCast) {
-            error.HierarchyRequest => try allocPrint(
-                alloc,
-                "{s}: Failed to execute '{s}' on 'Node': The new child element contains the parent.",
-                .{ errName, callerName },
-            ),
-            error.NoError => unreachable,
-            else => try allocPrint(
-                alloc,
-                "{s}: TODO message", // TODO: implement other messages
-                .{DOMException.name(errCast)},
-            ),
-        };
-        return .{ .err = errCast, .str = str };
-    }
-
-    fn name(err: parser.DOMError) []const u8 {
-        return switch (err) {
-            error.IndexSize => "IndexSizeError",
-            error.StringSize => "StringSizeError",
-            error.HierarchyRequest => "HierarchyRequestError",
-            error.WrongDocument => "WrongDocumentError",
-            error.InvalidCharacter => "InvalidCharacterError",
-            error.NoDataAllowed => "NoDataAllowedError",
-            error.NoModificationAllowed => "NoModificationAllowedError",
-            error.NotFound => "NotFoundError",
-            error.NotSupported => "NotSupportedError",
-            error.InuseAttribute => "InuseAttributeError",
-            error.InvalidState => "InvalidStateError",
-            error.Syntax => "SyntaxError",
-            error.InvalidModification => "InvalidModificationError",
-            error.Namespace => "NamespaceError",
-            error.InvalidAccess => "InvalidAccessError",
-            error.Validation => "ValidationError",
-            error.TypeMismatch => "TypeMismatchError",
-            error.Security => "SecurityError",
-            error.Network => "NetworkError",
-            error.Abort => "AbortError",
-            error.URLismatch => "URLismatchError",
-            error.QuotaExceeded => "QuotaExceededError",
-            error.Timeout => "TimeoutError",
-            error.InvalidNodeType => "InvalidNodeTypeError",
-            error.DataClone => "DataCloneError",
-            error.NoError => unreachable,
-
-            // custom netsurf error
-            error.UnspecifiedEventType => "UnspecifiedEventTypeError",
-            error.DispatchRequest => "DispatchRequestError",
-            error.NoMemory => "NoMemoryError",
-            error.AttributeWrongType => "AttributeWrongTypeError",
-        };
-    }
-
-    // JS properties and methods
-
-    pub fn get_code(self: *const DOMException) u8 {
-        return switch (self.err) {
-            error.IndexSize => 1,
-            error.StringSize => 2,
-            error.HierarchyRequest => 3,
-            error.WrongDocument => 4,
-            error.InvalidCharacter => 5,
-            error.NoDataAllowed => 6,
-            error.NoModificationAllowed => 7,
-            error.NotFound => 8,
-            error.NotSupported => 9,
-            error.InuseAttribute => 10,
-            error.InvalidState => 11,
-            error.Syntax => 12,
-            error.InvalidModification => 13,
-            error.Namespace => 14,
-            error.InvalidAccess => 15,
-            error.Validation => 16,
-            error.TypeMismatch => 17,
-            error.Security => 18,
-            error.Network => 19,
-            error.Abort => 20,
-            error.URLismatch => 21,
-            error.QuotaExceeded => 22,
-            error.Timeout => 23,
-            error.InvalidNodeType => 24,
-            error.DataClone => 25,
-            error.NoError => unreachable,
-
-            // custom netsurf error
-            error.UnspecifiedEventType => 128,
-            error.DispatchRequest => 129,
-            error.NoMemory => 130,
-            error.AttributeWrongType => 131,
-        };
-    }
-
-    pub fn get_name(self: *const DOMException) []const u8 {
-        return DOMException.name(self.err);
-    }
-
-    pub fn get_message(self: *const DOMException) []const u8 {
-        const errName = DOMException.name(self.err);
-        return self.str[errName.len + 2 ..];
-    }
-
-    pub fn _toString(self: *const DOMException) []const u8 {
-        return self.str;
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Exception" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    const err = "Failed to execute 'appendChild' on 'Node': The new child element contains the parent.";
-    try runner.testCases(&.{
-        .{ "let content = document.getElementById('content')", "undefined" },
-        .{ "let link = document.getElementById('link')", "undefined" },
-        // HierarchyRequestError
-        .{
-            \\ var he;
-            \\ try { link.appendChild(content) } catch (error) { he = error}
-            \\ he.name
-            ,
-            "HierarchyRequestError",
-        },
-        .{ "he.code", "3" },
-        .{ "he.message", err },
-        .{ "he.toString()", "HierarchyRequestError: " ++ err },
-        .{ "he instanceof DOMException", "true" },
-        .{ "he instanceof Error", "true" },
-    }, .{});
-}

src/browser/dom/html_collection.zig

@@ -1,500 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-
-const parser = @import("../netsurf.zig");
-
-const Element = @import("element.zig").Element;
-const Union = @import("element.zig").Union;
-const JsThis = @import("../env.zig").JsThis;
-const Walker = @import("walker.zig").Walker;
-
-const Matcher = union(enum) {
-    matchByName: MatchByName,
-    matchByTagName: MatchByTagName,
-    matchByClassName: MatchByClassName,
-    matchByLinks: MatchByLinks,
-    matchByAnchors: MatchByAnchors,
-    matchTrue: struct {},
-    matchFalse: struct {},
-
-    pub fn match(self: Matcher, node: *parser.Node) !bool {
-        switch (self) {
-            .matchTrue => return true,
-            .matchFalse => return false,
-            .matchByLinks => return MatchByLinks.match(node),
-            .matchByAnchors => return MatchByAnchors.match(node),
-            inline else => |m| return m.match(node),
-        }
-    }
-};
-
-pub const MatchByTagName = struct {
-    // tag is used to select node against their name.
-    // tag comparison is case insensitive.
-    tag: []const u8,
-    is_wildcard: bool,
-
-    fn init(arena: Allocator, tag_name: []const u8) !MatchByTagName {
-        if (std.mem.eql(u8, tag_name, "*")) {
-            return .{ .tag = "*", .is_wildcard = true };
-        }
-
-        return .{
-            .tag = try arena.dupe(u8, tag_name),
-            .is_wildcard = false,
-        };
-    }
-
-    pub fn match(self: MatchByTagName, node: *parser.Node) !bool {
-        return self.is_wildcard or std.ascii.eqlIgnoreCase(self.tag, try parser.nodeName(node));
-    }
-};
-
-pub fn HTMLCollectionByTagName(
-    arena: Allocator,
-    root: ?*parser.Node,
-    tag_name: []const u8,
-    include_root: bool,
-) !HTMLCollection {
-    return HTMLCollection{
-        .root = root,
-        .walker = .{ .walkerDepthFirst = .{} },
-        .matcher = .{ .matchByTagName = try MatchByTagName.init(arena, tag_name) },
-        .include_root = include_root,
-    };
-}
-
-pub const MatchByClassName = struct {
-    class_names: []const u8,
-
-    fn init(arena: Allocator, class_names: []const u8) !MatchByClassName {
-        return .{
-            .class_names = try arena.dupe(u8, class_names),
-        };
-    }
-
-    pub fn match(self: MatchByClassName, node: *parser.Node) !bool {
-        const e = parser.nodeToElement(node);
-
-        var it = std.mem.splitScalar(u8, self.class_names, ' ');
-        while (it.next()) |c| {
-            if (!try parser.elementHasClass(e, c)) {
-                return false;
-            }
-        }
-
-        return true;
-    }
-};
-
-pub fn HTMLCollectionByClassName(
-    arena: Allocator,
-    root: ?*parser.Node,
-    classNames: []const u8,
-    include_root: bool,
-) !HTMLCollection {
-    return HTMLCollection{
-        .root = root,
-        .walker = .{ .walkerDepthFirst = .{} },
-        .matcher = .{ .matchByClassName = try MatchByClassName.init(arena, classNames) },
-        .include_root = include_root,
-    };
-}
-
-pub const MatchByName = struct {
-    name: []const u8,
-
-    fn init(arena: Allocator, name: []const u8) !MatchByName {
-        return .{
-            .name = try arena.dupe(u8, name),
-        };
-    }
-
-    pub fn match(self: MatchByName, node: *parser.Node) !bool {
-        const e = parser.nodeToElement(node);
-        const nname = try parser.elementGetAttribute(e, "name") orelse return false;
-        return std.mem.eql(u8, self.name, nname);
-    }
-};
-
-pub fn HTMLCollectionByName(
-    arena: Allocator,
-    root: ?*parser.Node,
-    name: []const u8,
-    include_root: bool,
-) !HTMLCollection {
-    return HTMLCollection{
-        .root = root,
-        .walker = .{ .walkerDepthFirst = .{} },
-        .matcher = .{ .matchByName = try MatchByName.init(arena, name) },
-        .include_root = include_root,
-    };
-}
-
-// HTMLAllCollection is a special type: instances of it are falsy. It's the only
-// object in the WebAPI that behaves like this - in fact, it's even a special
-// case in the JavaScript spec.
-// This is important, because a lot of browser detection rely on this behavior
-// to determine what browser is running.
-
-// It's also possible to use an instance like a function:
-//   document.all(3)
-//   document.all('some_id')
-pub const HTMLAllCollection = struct {
-    pub const prototype = *HTMLCollection;
-
-    proto: HTMLCollection,
-
-    pub const mark_as_undetectable = true;
-
-    pub fn init(root: ?*parser.Node) HTMLAllCollection {
-        return .{ .proto = .{
-            .root = root,
-            .walker = .{ .walkerDepthFirst = .{} },
-            .matcher = .{ .matchTrue = .{} },
-            .include_root = true,
-        } };
-    }
-
-    const CAllAsFunctionArg = union(enum) {
-        index: u32,
-        id: []const u8,
-    };
-
-    pub fn jsCallAsFunction(self: *HTMLAllCollection, arg: CAllAsFunctionArg) !?Union {
-        return switch (arg) {
-            .index => |i| self.proto._item(i),
-            .id => |id| self.proto._namedItem(id),
-        };
-    }
-};
-
-pub fn HTMLCollectionChildren(
-    root: ?*parser.Node,
-    include_root: bool,
-) !HTMLCollection {
-    return HTMLCollection{
-        .root = root,
-        .walker = .{ .walkerChildren = .{} },
-        .matcher = .{ .matchTrue = .{} },
-        .include_root = include_root,
-    };
-}
-
-pub fn HTMLCollectionEmpty() !HTMLCollection {
-    return HTMLCollection{
-        .root = null,
-        .walker = .{ .walkerNone = .{} },
-        .matcher = .{ .matchFalse = .{} },
-        .include_root = false,
-    };
-}
-
-// MatchByLinks matches the a and area elements in the Document that have href
-// attributes.
-// https://html.spec.whatwg.org/#dom-document-links
-pub const MatchByLinks = struct {
-    pub fn match(node: *parser.Node) !bool {
-        const tag = try parser.nodeName(node);
-        if (!std.ascii.eqlIgnoreCase(tag, "a") and !std.ascii.eqlIgnoreCase(tag, "area")) {
-            return false;
-        }
-        const elem = @as(*parser.Element, @ptrCast(node));
-        return parser.elementHasAttribute(elem, "href");
-    }
-};
-
-pub fn HTMLCollectionByLinks(
-    root: ?*parser.Node,
-    include_root: bool,
-) !HTMLCollection {
-    return HTMLCollection{
-        .root = root,
-        .walker = .{ .walkerDepthFirst = .{} },
-        .matcher = .{ .matchByLinks = MatchByLinks{} },
-        .include_root = include_root,
-    };
-}
-
-// MatchByAnchors matches the a elements in the Document that have name
-// attributes.
-// https://html.spec.whatwg.org/#dom-document-anchors
-pub const MatchByAnchors = struct {
-    pub fn match(node: *parser.Node) !bool {
-        const tag = try parser.nodeName(node);
-        if (!std.ascii.eqlIgnoreCase(tag, "a")) return false;
-
-        const elem = @as(*parser.Element, @ptrCast(node));
-        return parser.elementHasAttribute(elem, "name");
-    }
-};
-
-pub fn HTMLCollectionByAnchors(
-    root: ?*parser.Node,
-    include_root: bool,
-) !HTMLCollection {
-    return HTMLCollection{
-        .root = root,
-        .walker = .{ .walkerDepthFirst = .{} },
-        .matcher = .{ .matchByAnchors = MatchByAnchors{} },
-        .include_root = include_root,
-    };
-}
-
-pub const HTMLCollectionIterator = struct {
-    coll: *HTMLCollection,
-    index: u32 = 0,
-
-    pub const Return = struct {
-        value: ?Union,
-        done: bool,
-    };
-
-    pub fn _next(self: *HTMLCollectionIterator) !Return {
-        const e = try self.coll._item(self.index);
-        if (e == null) {
-            return Return{
-                .value = null,
-                .done = true,
-            };
-        }
-
-        self.index += 1;
-        return Return{
-            .value = e,
-            .done = false,
-        };
-    }
-};
-
-// WEB IDL https://dom.spec.whatwg.org/#htmlcollection
-// HTMLCollection is re implemented in zig here because libdom
-// dom_html_collection expects a comparison function callback as arguement.
-// But we wanted a dynamically comparison here, according to the match tagname.
-pub const HTMLCollection = struct {
-    matcher: Matcher,
-    walker: Walker,
-
-    root: ?*parser.Node,
-
-    // By default the HTMLCollection walk on the root's descendant only.
-    // But on somes cases, like for dom document, we want to walk over the root
-    // itself.
-    include_root: bool = false,
-
-    // save a state for the collection to improve the _item speed.
-    cur_idx: ?u32 = null,
-    cur_node: ?*parser.Node = null,
-
-    // start returns the first node to walk on.
-    fn start(self: *const HTMLCollection) !?*parser.Node {
-        if (self.root == null) return null;
-
-        if (self.include_root) {
-            return self.root.?;
-        }
-
-        return try self.walker.get_next(self.root.?, null);
-    }
-
-    pub fn _symbol_iterator(self: *HTMLCollection) HTMLCollectionIterator {
-        return HTMLCollectionIterator{
-            .coll = self,
-        };
-    }
-
-    /// get_length computes the collection's length dynamically according to
-    /// the current root structure.
-    // TODO: nodes retrieved must be de-referenced.
-    pub fn get_length(self: *HTMLCollection) !u32 {
-        if (self.root == null) return 0;
-
-        var len: u32 = 0;
-        var node = try self.start() orelse return 0;
-
-        while (true) {
-            if (try parser.nodeType(node) == .element) {
-                if (try self.matcher.match(node)) {
-                    len += 1;
-                }
-            }
-
-            node = try self.walker.get_next(self.root.?, node) orelse break;
-        }
-
-        return len;
-    }
-
-    pub fn item(self: *HTMLCollection, index: u32) !?*parser.Node {
-        if (self.root == null) return null;
-
-        var i: u32 = 0;
-        var node: *parser.Node = undefined;
-
-        // Use the current state to improve speed if possible.
-        if (self.cur_idx != null and index >= self.cur_idx.?) {
-            i = self.cur_idx.?;
-            node = self.cur_node.?;
-        } else {
-            node = try self.start() orelse return null;
-        }
-
-        while (true) {
-            if (try parser.nodeType(node) == .element) {
-                if (try self.matcher.match(node)) {
-                    // check if we found the searched element.
-                    if (i == index) {
-                        // save the current state
-                        self.cur_node = node;
-                        self.cur_idx = i;
-
-                        return node;
-                    }
-
-                    i += 1;
-                }
-            }
-
-            node = try self.walker.get_next(self.root.?, node) orelse break;
-        }
-
-        return null;
-    }
-
-    pub fn _item(self: *HTMLCollection, index: u32) !?Union {
-        const node = try self.item(index) orelse return null;
-        const e = @as(*parser.Element, @ptrCast(node));
-        return try Element.toInterface(e);
-    }
-
-    pub fn _namedItem(self: *const HTMLCollection, name: []const u8) !?Union {
-        if (self.root == null) return null;
-        if (name.len == 0) return null;
-
-        var node = try self.start() orelse return null;
-
-        while (true) {
-            if (try parser.nodeType(node) == .element) {
-                if (try self.matcher.match(node)) {
-                    const elem = @as(*parser.Element, @ptrCast(node));
-
-                    var attr = try parser.elementGetAttribute(elem, "id");
-                    // check if the node id corresponds to the name argument.
-                    if (attr != null and std.mem.eql(u8, name, attr.?)) {
-                        return try Element.toInterface(elem);
-                    }
-
-                    attr = try parser.elementGetAttribute(elem, "name");
-                    // check if the node id corresponds to the name argument.
-                    if (attr != null and std.mem.eql(u8, name, attr.?)) {
-                        return try Element.toInterface(elem);
-                    }
-                }
-            }
-
-            node = try self.walker.get_next(self.root.?, node) orelse break;
-        }
-
-        return null;
-    }
-
-    fn item_name(elt: *parser.Element) !?[]const u8 {
-        if (try parser.elementGetAttribute(elt, "id")) |v| {
-            return v;
-        }
-        if (try parser.elementGetAttribute(elt, "name")) |v| {
-            return v;
-        }
-
-        return null;
-    }
-
-    pub fn postAttach(self: *HTMLCollection, js_this: JsThis) !void {
-        const len = try self.get_length();
-        for (0..len) |i| {
-            const node = try self.item(@intCast(i)) orelse unreachable;
-            const e = @as(*parser.Element, @ptrCast(node));
-            const as_interface = try Element.toInterface(e);
-            try js_this.setIndex(@intCast(i), as_interface, .{});
-
-            if (try item_name(e)) |name| {
-                // Even though an entry might have an empty id, the spec says
-                // that namedItem("") should always return null
-                if (name.len > 0) {
-                    // Named fields should not be enumerable (it is defined with
-                    // the LegacyUnenumerableNamedProperties flag.)
-                    try js_this.set(name, as_interface, .{ .DONT_ENUM = true });
-                }
-            }
-        }
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.HTMLCollection" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let getElementsByTagName = document.getElementsByTagName('p')", "undefined" },
-        .{ "getElementsByTagName.length", "2" },
-        .{ "let getElementsByTagNameCI = document.getElementsByTagName('P')", "undefined" },
-        .{ "getElementsByTagNameCI.length", "2" },
-        .{ "getElementsByTagName.item(0).localName", "p" },
-        .{ "getElementsByTagName.item(1).localName", "p" },
-        .{ "let getElementsByTagNameAll = document.getElementsByTagName('*')", "undefined" },
-        .{ "getElementsByTagNameAll.length", "8" },
-        .{ "getElementsByTagNameAll.item(0).localName", "html" },
-        .{ "getElementsByTagNameAll.item(0).localName", "html" },
-        .{ "getElementsByTagNameAll.item(1).localName", "head" },
-        .{ "getElementsByTagNameAll.item(0).localName", "html" },
-        .{ "getElementsByTagNameAll.item(2).localName", "body" },
-        .{ "getElementsByTagNameAll.item(3).localName", "div" },
-        .{ "getElementsByTagNameAll.item(7).localName", "p" },
-        .{ "getElementsByTagNameAll.namedItem('para-empty-child').localName", "span" },
-
-        // array like
-        .{ "getElementsByTagNameAll[0].localName", "html" },
-        .{ "getElementsByTagNameAll[7].localName", "p" },
-        .{ "getElementsByTagNameAll[8]", "undefined" },
-        .{ "getElementsByTagNameAll['para-empty-child'].localName", "span" },
-        .{ "getElementsByTagNameAll['foo']", "undefined" },
-
-        .{ "document.getElementById('content').getElementsByTagName('*').length", "4" },
-        .{ "document.getElementById('content').getElementsByTagName('p').length", "2" },
-        .{ "document.getElementById('content').getElementsByTagName('div').length", "0" },
-
-        .{ "document.children.length", "1" },
-        .{ "document.getElementById('content').children.length", "3" },
-
-        // check liveness
-        .{ "let content = document.getElementById('content')", "undefined" },
-        .{ "let pe = document.getElementById('para-empty')", "undefined" },
-        .{ "let p = document.createElement('p')", "undefined" },
-        .{ "p.textContent = 'OK live'", "OK live" },
-        .{ "getElementsByTagName.item(1).textContent", " And" },
-        .{ "content.appendChild(p) != undefined", "true" },
-        .{ "getElementsByTagName.length", "3" },
-        .{ "getElementsByTagName.item(2).textContent", "OK live" },
-        .{ "content.insertBefore(p, pe) != undefined", "true" },
-        .{ "getElementsByTagName.item(0).textContent", "OK live" },
-    }, .{});
-}

src/browser/dom/implementation.zig

@@ -1,72 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-const DOMException = @import("exceptions.zig").DOMException;
-
-// WEB IDL https://dom.spec.whatwg.org/#domimplementation
-pub const DOMImplementation = struct {
-    pub const Exception = DOMException;
-
-    pub fn _createDocumentType(
-        _: *DOMImplementation,
-        qname: [:0]const u8,
-        publicId: [:0]const u8,
-        systemId: [:0]const u8,
-    ) !*parser.DocumentType {
-        return try parser.domImplementationCreateDocumentType(qname, publicId, systemId);
-    }
-
-    pub fn _createDocument(
-        _: *DOMImplementation,
-        namespace: ?[:0]const u8,
-        qname: ?[:0]const u8,
-        doctype: ?*parser.DocumentType,
-    ) !*parser.Document {
-        return try parser.domImplementationCreateDocument(namespace, qname, doctype);
-    }
-
-    pub fn _createHTMLDocument(_: *DOMImplementation, title: ?[]const u8) !*parser.DocumentHTML {
-        return try parser.domImplementationCreateHTMLDocument(title);
-    }
-
-    pub fn _hasFeature(_: *DOMImplementation) bool {
-        return true;
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Implementation" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let impl = document.implementation", "undefined" },
-        .{ "impl.createHTMLDocument();", "[object HTMLDocument]" },
-        .{ "const doc = impl.createHTMLDocument('foo');", "undefined" },
-        .{ "doc", "[object HTMLDocument]" },
-        .{ "doc.title", "foo" },
-        .{ "doc.body", "[object HTMLBodyElement]" },
-        .{ "impl.createDocument(null, 'foo');", "[object Document]" },
-        .{ "impl.createDocumentType('foo', 'bar', 'baz')", "[object DocumentType]" },
-        .{ "impl.hasFeature()", "true" },
-    }, .{});
-}

src/browser/dom/intersection_observer.zig

@@ -1,290 +0,0 @@
-// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const Env = @import("../env.zig").Env;
-const Element = @import("element.zig").Element;
-
-pub const Interfaces = .{
-    IntersectionObserver,
-    IntersectionObserverEntry,
-};
-
-// This is supposed to listen to change between the root and observation targets.
-// However, our rendered stores everything as 1 pixel sized boxes in a long row that never changes.
-// As such, there are no changes to intersections between the root and any target.
-// Instead we keep a list of all entries that are being observed.
-// The callback is called with all entries everytime a new entry is added(observed).
-// Potentially we should also call the callback at a regular interval.
-// The returned Entries are phony, they always indicate full intersection.
-// https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserver
-pub const IntersectionObserver = struct {
-    page: *Page,
-    callback: Env.Function,
-    options: IntersectionObserverOptions,
-
-    observed_entries: std.ArrayListUnmanaged(IntersectionObserverEntry),
-
-    // new IntersectionObserver(callback)
-    // new IntersectionObserver(callback, options) [not supported yet]
-    pub fn constructor(callback: Env.Function, options_: ?IntersectionObserverOptions, page: *Page) !IntersectionObserver {
-        var options = IntersectionObserverOptions{
-            .root = parser.documentToNode(parser.documentHTMLToDocument(page.window.document)),
-            .rootMargin = "0px 0px 0px 0px",
-            .threshold = .{ .single = 0.0 },
-        };
-        if (options_) |*o| {
-            if (o.root) |root| {
-                options.root = root;
-            } // Other properties are not used due to the way we render
-        }
-
-        return .{
-            .page = page,
-            .callback = callback,
-            .options = options,
-            .observed_entries = .{},
-        };
-    }
-
-    pub fn _disconnect(self: *IntersectionObserver) !void {
-        self.observed_entries = .{}; // We don't free as it is on an arena
-    }
-
-    pub fn _observe(self: *IntersectionObserver, target_element: *parser.Element) !void {
-        for (self.observed_entries.items) |*observer| {
-            if (observer.target == target_element) {
-                return; // Already observed
-            }
-        }
-
-        try self.observed_entries.append(self.page.arena, .{
-            .page = self.page,
-            .target = target_element,
-            .options = &self.options,
-        });
-
-        var result: Env.Function.Result = undefined;
-        self.callback.tryCall(void, .{self.observed_entries.items}, &result) catch {
-            log.debug(.user_script, "callback error", .{
-                .err = result.exception,
-                .stack = result.stack,
-                .source = "intersection observer",
-            });
-        };
-    }
-
-    pub fn _unobserve(self: *IntersectionObserver, target: *parser.Element) !void {
-        for (self.observed_entries.items, 0..) |*observer, index| {
-            if (observer.target == target) {
-                _ = self.observed_entries.swapRemove(index);
-                break;
-            }
-        }
-    }
-
-    pub fn _takeRecords(self: *IntersectionObserver) []IntersectionObserverEntry {
-        return self.observed_entries.items;
-    }
-};
-
-const IntersectionObserverOptions = struct {
-    root: ?*parser.Node, // Element or Document
-    rootMargin: ?[]const u8,
-    threshold: ?Threshold,
-
-    const Threshold = union(enum) {
-        single: f32,
-        list: []const f32,
-    };
-};
-
-// https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserverEntry
-// https://w3c.github.io/IntersectionObserver/#intersection-observer-entry
-pub const IntersectionObserverEntry = struct {
-    page: *Page,
-    target: *parser.Element,
-    options: *IntersectionObserverOptions,
-
-    // Returns the bounds rectangle of the target element as a DOMRectReadOnly. The bounds are computed as described in the documentation for Element.getBoundingClientRect().
-    pub fn get_boundingClientRect(self: *const IntersectionObserverEntry) !Element.DOMRect {
-        return Element._getBoundingClientRect(self.target, self.page);
-    }
-
-    // Returns the ratio of the intersectionRect to the boundingClientRect.
-    pub fn get_intersectionRatio(_: *const IntersectionObserverEntry) f32 {
-        return 1.0;
-    }
-
-    // Returns a DOMRectReadOnly representing the target's visible area.
-    pub fn get_intersectionRect(self: *const IntersectionObserverEntry) !Element.DOMRect {
-        return Element._getBoundingClientRect(self.target, self.page);
-    }
-
-    // A Boolean value which is true if the target element intersects with the
-    // intersection observer's root. If this is true, then, the
-    // IntersectionObserverEntry describes a transition into a state of
-    // intersection; if it's false, then you know the transition is from
-    // intersecting to not-intersecting.
-    pub fn get_isIntersecting(_: *const IntersectionObserverEntry) bool {
-        return true;
-    }
-
-    // Returns a DOMRectReadOnly for the intersection observer's root.
-    pub fn get_rootBounds(self: *const IntersectionObserverEntry) !Element.DOMRect {
-        const root = self.options.root.?;
-        if (@intFromPtr(root) == @intFromPtr(self.page.window.document)) {
-            return self.page.renderer.boundingRect();
-        }
-
-        const root_type = try parser.nodeType(root);
-
-        var element: *parser.Element = undefined;
-        switch (root_type) {
-            .element => element = parser.nodeToElement(root),
-            .document => {
-                const doc = parser.nodeToDocument(root);
-                element = (try parser.documentGetDocumentElement(doc)).?;
-            },
-            else => return error.InvalidState,
-        }
-
-        return Element._getBoundingClientRect(element, self.page);
-    }
-
-    // The Element whose intersection with the root changed.
-    pub fn get_target(self: *const IntersectionObserverEntry) *parser.Element {
-        return self.target;
-    }
-
-    // TODO: pub fn get_time(self: *const IntersectionObserverEntry)
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.IntersectionObserver" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "new IntersectionObserver(() => {}).observe(document.documentElement);", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let count_a = 0;", "undefined" },
-        .{ "const a1 = document.createElement('div');", "undefined" },
-        .{ "new IntersectionObserver(entries => {count_a += 1;}).observe(a1);", "undefined" },
-        .{ "count_a;", "1" },
-    }, .{});
-
-    // This test is documenting current behavior, not correct behavior.
-    // Currently every time observe is called, the callback is called with all entries.
-    try runner.testCases(&.{
-        .{ "let count_b = 0;", "undefined" },
-        .{ "let observer_b = new IntersectionObserver(entries => {count_b = entries.length;});", "undefined" },
-        .{ "const b1 = document.createElement('div');", "undefined" },
-        .{ "observer_b.observe(b1);", "undefined" },
-        .{ "count_b;", "1" },
-        .{ "const b2 = document.createElement('div');", "undefined" },
-        .{ "observer_b.observe(b2);", "undefined" },
-        .{ "count_b;", "2" },
-    }, .{});
-
-    // Re-observing is a no-op
-    try runner.testCases(&.{
-        .{ "let count_bb = 0;", "undefined" },
-        .{ "let observer_bb = new IntersectionObserver(entries => {count_bb = entries.length;});", "undefined" },
-        .{ "const bb1 = document.createElement('div');", "undefined" },
-        .{ "observer_bb.observe(bb1);", "undefined" },
-        .{ "count_bb;", "1" },
-        .{ "observer_bb.observe(bb1);", "undefined" },
-        .{ "count_bb;", "1" }, // Still 1, not 2
-    }, .{});
-
-    // Unobserve
-    try runner.testCases(&.{
-        .{ "let count_c = 0;", "undefined" },
-        .{ "let observer_c = new IntersectionObserver(entries => { count_c = entries.length;});", "undefined" },
-        .{ "const c1 = document.createElement('div');", "undefined" },
-        .{ "observer_c.observe(c1);", "undefined" },
-        .{ "count_c;", "1" },
-        .{ "observer_c.unobserve(c1);", "undefined" },
-        .{ "const c2 = document.createElement('div');", "undefined" },
-        .{ "observer_c.observe(c2);", "undefined" },
-        .{ "count_c;", "1" },
-    }, .{});
-
-    // Disconnect
-    try runner.testCases(&.{
-        .{ "let observer_d = new IntersectionObserver(entries => {});", "undefined" },
-        .{ "let d1 = document.createElement('div');", "undefined" },
-        .{ "observer_d.observe(d1);", "undefined" },
-        .{ "observer_d.disconnect();", "undefined" },
-        .{ "observer_d.takeRecords().length;", "0" },
-    }, .{});
-
-    // takeRecords
-    try runner.testCases(&.{
-        .{ "let observer_e = new IntersectionObserver(entries => {});", "undefined" },
-        .{ "let e1 = document.createElement('div');", "undefined" },
-        .{ "observer_e.observe(e1);", "undefined" },
-        .{ "const e2 = document.createElement('div');", "undefined" },
-        .{ "observer_e.observe(e2);", "undefined" },
-        .{ "observer_e.takeRecords().length;", "2" },
-    }, .{});
-
-    // Entry
-    try runner.testCases(&.{
-        .{ "let entry;", "undefined" },
-        .{ "let div1 = document.createElement('div')", null },
-        .{ "document.body.appendChild(div1);", null },
-        .{ "new IntersectionObserver(entries => { entry = entries[0]; }).observe(div1);", null },
-        .{ "entry.boundingClientRect.x;", "0" },
-        .{ "entry.intersectionRatio;", "1" },
-        .{ "entry.intersectionRect.x;", "0" },
-        .{ "entry.intersectionRect.y;", "0" },
-        .{ "entry.intersectionRect.width;", "1" },
-        .{ "entry.intersectionRect.height;", "1" },
-        .{ "entry.isIntersecting;", "true" },
-        .{ "entry.rootBounds.x;", "0" },
-        .{ "entry.rootBounds.y;", "0" },
-        .{ "entry.rootBounds.width;", "1" },
-        .{ "entry.rootBounds.height;", "1" },
-        .{ "entry.target;", "[object HTMLDivElement]" },
-    }, .{});
-
-    // Options
-    try runner.testCases(&.{
-        .{ "const new_root = document.createElement('span');", null },
-        .{ "document.body.appendChild(new_root);", null },
-        .{ "let new_entry;", "undefined" },
-        .{
-            \\ const new_observer = new IntersectionObserver(
-            \\ entries => { new_entry = entries[0]; },
-            \\ {root: new_root, rootMargin: '0px 0px 0px 0px', threshold: [0]});
-            ,
-            "undefined",
-        },
-        .{ "new_observer.observe(document.createElement('div'));", "undefined" },
-        .{ "new_entry.rootBounds.x;", "1" },
-    }, .{});
-}

src/browser/dom/mutation_observer.zig

@@ -1,389 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const Env = @import("../env.zig").Env;
-const NodeList = @import("nodelist.zig").NodeList;
-
-pub const Interfaces = .{
-    MutationObserver,
-    MutationRecord,
-};
-
-const Walker = @import("../dom/walker.zig").WalkerChildren;
-
-// WEB IDL https://dom.spec.whatwg.org/#interface-mutationobserver
-pub const MutationObserver = struct {
-    cbk: Env.Function,
-    arena: Allocator,
-
-    // List of records which were observed. When the call scope ends, we need to
-    // execute our callback with it.
-    observed: std.ArrayListUnmanaged(*MutationRecord),
-
-    pub fn constructor(cbk: Env.Function, page: *Page) !MutationObserver {
-        return .{
-            .cbk = cbk,
-            .observed = .{},
-            .arena = page.arena,
-        };
-    }
-
-    pub fn _observe(self: *MutationObserver, node: *parser.Node, options_: ?MutationObserverInit) !void {
-        const options = options_ orelse MutationObserverInit{};
-
-        const observer = try self.arena.create(Observer);
-        observer.* = .{
-            .node = node,
-            .options = options,
-            .mutation_observer = self,
-            .event_node = .{ .id = self.cbk.id, .func = Observer.handle },
-        };
-
-        // register node's events
-        if (options.childList or options.subtree) {
-            _ = try parser.eventTargetAddEventListener(
-                parser.toEventTarget(parser.Node, node),
-                "DOMNodeInserted",
-                &observer.event_node,
-                false,
-            );
-            _ = try parser.eventTargetAddEventListener(
-                parser.toEventTarget(parser.Node, node),
-                "DOMNodeRemoved",
-                &observer.event_node,
-                false,
-            );
-        }
-        if (options.attr()) {
-            _ = try parser.eventTargetAddEventListener(
-                parser.toEventTarget(parser.Node, node),
-                "DOMAttrModified",
-                &observer.event_node,
-                false,
-            );
-        }
-        if (options.cdata()) {
-            _ = try parser.eventTargetAddEventListener(
-                parser.toEventTarget(parser.Node, node),
-                "DOMCharacterDataModified",
-                &observer.event_node,
-                false,
-            );
-        }
-        if (options.subtree) {
-            _ = try parser.eventTargetAddEventListener(
-                parser.toEventTarget(parser.Node, node),
-                "DOMSubtreeModified",
-                &observer.event_node,
-                false,
-            );
-        }
-    }
-
-    pub fn jsCallScopeEnd(self: *MutationObserver) void {
-        const record = self.observed.items;
-        if (record.len == 0) {
-            return;
-        }
-
-        defer self.observed.clearRetainingCapacity();
-
-        for (record) |r| {
-            const records = [_]MutationRecord{r.*};
-            var result: Env.Function.Result = undefined;
-            self.cbk.tryCall(void, .{records}, &result) catch {
-                log.debug(.user_script, "callback error", .{
-                    .err = result.exception,
-                    .stack = result.stack,
-                    .source = "mutation observer",
-                });
-            };
-        }
-    }
-
-    // TODO
-    pub fn _disconnect(_: *MutationObserver) !void {
-        // TODO unregister listeners.
-    }
-
-    // TODO
-    pub fn _takeRecords(_: *const MutationObserver) ?[]const u8 {
-        return &[_]u8{};
-    }
-};
-
-pub const MutationRecord = struct {
-    type: []const u8,
-    target: *parser.Node,
-    added_nodes: NodeList = .{},
-    removed_nodes: NodeList = .{},
-    previous_sibling: ?*parser.Node = null,
-    next_sibling: ?*parser.Node = null,
-    attribute_name: ?[]const u8 = null,
-    attribute_namespace: ?[]const u8 = null,
-    old_value: ?[]const u8 = null,
-
-    pub fn get_type(self: *const MutationRecord) []const u8 {
-        return self.type;
-    }
-
-    pub fn get_addedNodes(self: *MutationRecord) *NodeList {
-        return &self.added_nodes;
-    }
-
-    pub fn get_removedNodes(self: *MutationRecord) *NodeList {
-        return &self.removed_nodes;
-    }
-
-    pub fn get_target(self: *const MutationRecord) *parser.Node {
-        return self.target;
-    }
-
-    pub fn get_attributeName(self: *const MutationRecord) ?[]const u8 {
-        return self.attribute_name;
-    }
-
-    pub fn get_attributeNamespace(self: *const MutationRecord) ?[]const u8 {
-        return self.attribute_namespace;
-    }
-
-    pub fn get_previousSibling(self: *const MutationRecord) ?*parser.Node {
-        return self.previous_sibling;
-    }
-
-    pub fn get_nextSibling(self: *const MutationRecord) ?*parser.Node {
-        return self.next_sibling;
-    }
-
-    pub fn get_oldValue(self: *const MutationRecord) ?[]const u8 {
-        return self.old_value;
-    }
-};
-
-const MutationObserverInit = struct {
-    childList: bool = false,
-    attributes: bool = false,
-    characterData: bool = false,
-    subtree: bool = false,
-    attributeOldValue: bool = false,
-    characterDataOldValue: bool = false,
-    // TODO
-    // attributeFilter: [][]const u8,
-
-    fn attr(self: MutationObserverInit) bool {
-        return self.attributes or self.attributeOldValue;
-    }
-
-    fn cdata(self: MutationObserverInit) bool {
-        return self.characterData or self.characterDataOldValue;
-    }
-};
-
-const Observer = struct {
-    node: *parser.Node,
-    options: MutationObserverInit,
-
-    // record of the mutation, all observed changes in 1 call are batched
-    record: ?MutationRecord = null,
-
-    // reference back to the MutationObserver so that we can access the arena
-    // and batch the mutation records.
-    mutation_observer: *MutationObserver,
-
-    event_node: parser.EventNode,
-
-    fn appliesTo(o: *const Observer, target: *parser.Node) bool {
-        // mutation on any target is always ok.
-        if (o.options.subtree) {
-            return true;
-        }
-
-        // if target equals node, alway ok.
-        if (target == o.node) {
-            return true;
-        }
-
-        // no subtree, no same target and no childlist, always noky.
-        if (!o.options.childList) {
-            return false;
-        }
-
-        // target must be a child of o.node
-        const walker = Walker{};
-        var next: ?*parser.Node = null;
-        while (true) {
-            next = walker.get_next(o.node, next) catch break orelse break;
-            if (next.? == target) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    fn handle(en: *parser.EventNode, event: *parser.Event) void {
-        const self: *Observer = @fieldParentPtr("event_node", en);
-        self._handle(event) catch |err| {
-            log.err(.web_api, "handle error", .{ .err = err, .source = "mutation observer" });
-        };
-    }
-
-    fn _handle(self: *Observer, event: *parser.Event) !void {
-        var mutation_observer = self.mutation_observer;
-
-        const node = blk: {
-            const event_target = try parser.eventTarget(event) orelse return;
-            break :blk parser.eventTargetToNode(event_target);
-        };
-
-        if (self.appliesTo(node) == false) {
-            return;
-        }
-
-        const event_type = blk: {
-            const t = try parser.eventType(event);
-            break :blk std.meta.stringToEnum(MutationEventType, t) orelse return;
-        };
-
-        const arena = mutation_observer.arena;
-        if (self.record == null) {
-            self.record = .{
-                .target = self.node,
-                .type = event_type.recordType(),
-            };
-            try mutation_observer.observed.append(arena, &self.record.?);
-        }
-
-        var record = &self.record.?;
-        const mutation_event = parser.eventToMutationEvent(event);
-
-        switch (event_type) {
-            .DOMAttrModified => {
-                record.attribute_name = parser.mutationEventAttributeName(mutation_event) catch null;
-                if (self.options.attributeOldValue) {
-                    record.old_value = parser.mutationEventPrevValue(mutation_event) catch null;
-                }
-            },
-            .DOMCharacterDataModified => {
-                if (self.options.characterDataOldValue) {
-                    record.old_value = parser.mutationEventPrevValue(mutation_event) catch null;
-                }
-            },
-            .DOMNodeInserted => {
-                if (parser.mutationEventRelatedNode(mutation_event) catch null) |related_node| {
-                    try record.added_nodes.append(arena, related_node);
-                }
-            },
-            .DOMNodeRemoved => {
-                if (parser.mutationEventRelatedNode(mutation_event) catch null) |related_node| {
-                    try record.removed_nodes.append(arena, related_node);
-                }
-            },
-        }
-    }
-};
-
-const MutationEventType = enum {
-    DOMAttrModified,
-    DOMCharacterDataModified,
-    DOMNodeInserted,
-    DOMNodeRemoved,
-
-    fn recordType(self: MutationEventType) []const u8 {
-        return switch (self) {
-            .DOMAttrModified => "attributes",
-            .DOMCharacterDataModified => "characterData",
-            .DOMNodeInserted => "childList",
-            .DOMNodeRemoved => "childList",
-        };
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.MutationObserver" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "new MutationObserver(() => {}).observe(document, { childList: true });", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{
-            \\ var nb = 0;
-            \\ var mrs;
-            \\ new MutationObserver((mu) => {
-            \\    mrs = mu;
-            \\    nb++;
-            \\ }).observe(document.firstElementChild, { attributes: true, attributeOldValue: true });
-            \\ document.firstElementChild.setAttribute("foo", "bar");
-            \\ // ignored b/c it's about another target.
-            \\ document.firstElementChild.firstChild.setAttribute("foo", "bar");
-            \\ nb;
-            ,
-            "1",
-        },
-        .{ "mrs[0].type", "attributes" },
-        .{ "mrs[0].target == document.firstElementChild", "true" },
-        .{ "mrs[0].target.getAttribute('foo')", "bar" },
-        .{ "mrs[0].attributeName", "foo" },
-        .{ "mrs[0].oldValue", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{
-            \\ var node = document.getElementById("para").firstChild;
-            \\ var nb2 = 0;
-            \\ var mrs2;
-            \\ new MutationObserver((mu) => {
-            \\     mrs2 = mu;
-            \\     nb2++;
-            \\ }).observe(node, { characterData: true, characterDataOldValue: true });
-            \\ node.data = "foo";
-            \\ nb2;
-            ,
-            "1",
-        },
-        .{ "mrs2[0].type", "characterData" },
-        .{ "mrs2[0].target == node", "true" },
-        .{ "mrs2[0].target.data", "foo" },
-        .{ "mrs2[0].oldValue", " And" },
-    }, .{});
-
-    // tests that mutation observers that have a callback which trigger the
-    // mutation observer don't crash.
-    // https://github.com/lightpanda-io/browser/issues/550
-    try runner.testCases(&.{
-        .{
-            \\ var node = document.getElementById("para");
-            \\ new MutationObserver(() => {
-            \\     node.innerText = 'a';
-            \\ }).observe(document, { subtree:true,childList:true });
-            \\ node.innerText = "2";
-            ,
-            "2",
-        },
-    }, .{});
-}

src/browser/dom/namednodemap.zig

@@ -1,138 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-
-const DOMException = @import("exceptions.zig").DOMException;
-
-// WEB IDL https://dom.spec.whatwg.org/#namednodemap
-pub const NamedNodeMap = struct {
-    pub const Self = parser.NamedNodeMap;
-
-    pub const Exception = DOMException;
-    pub const Iterator = NamedNodeMapIterator;
-
-    // TODO implement LegacyUnenumerableNamedProperties.
-    // https://webidl.spec.whatwg.org/#LegacyUnenumerableNamedProperties
-
-    pub fn get_length(self: *parser.NamedNodeMap) !u32 {
-        return try parser.namedNodeMapGetLength(self);
-    }
-
-    pub fn _item(self: *parser.NamedNodeMap, index: u32) !?*parser.Attribute {
-        return try parser.namedNodeMapItem(self, index);
-    }
-
-    pub fn _getNamedItem(self: *parser.NamedNodeMap, qname: []const u8) !?*parser.Attribute {
-        return try parser.namedNodeMapGetNamedItem(self, qname);
-    }
-
-    pub fn _getNamedItemNS(
-        self: *parser.NamedNodeMap,
-        namespace: []const u8,
-        localname: []const u8,
-    ) !?*parser.Attribute {
-        return try parser.namedNodeMapGetNamedItemNS(self, namespace, localname);
-    }
-
-    pub fn _setNamedItem(self: *parser.NamedNodeMap, attr: *parser.Attribute) !?*parser.Attribute {
-        return try parser.namedNodeMapSetNamedItem(self, attr);
-    }
-
-    pub fn _setNamedItemNS(self: *parser.NamedNodeMap, attr: *parser.Attribute) !?*parser.Attribute {
-        return try parser.namedNodeMapSetNamedItemNS(self, attr);
-    }
-
-    pub fn _removeNamedItem(self: *parser.NamedNodeMap, qname: []const u8) !*parser.Attribute {
-        return try parser.namedNodeMapRemoveNamedItem(self, qname);
-    }
-
-    pub fn _removeNamedItemNS(
-        self: *parser.NamedNodeMap,
-        namespace: []const u8,
-        localname: []const u8,
-    ) !*parser.Attribute {
-        return try parser.namedNodeMapRemoveNamedItemNS(self, namespace, localname);
-    }
-
-    pub fn indexed_get(self: *parser.NamedNodeMap, index: u32, has_value: *bool) !*parser.Attribute {
-        return (try _item(self, index)) orelse {
-            has_value.* = false;
-            return undefined;
-        };
-    }
-
-    pub fn named_get(self: *parser.NamedNodeMap, name: []const u8, has_value: *bool) !*parser.Attribute {
-        return (try _getNamedItem(self, name)) orelse {
-            has_value.* = false;
-            return undefined;
-        };
-    }
-
-    pub fn _symbol_iterator(self: *parser.NamedNodeMap) NamedNodeMapIterator {
-        return .{ .map = self };
-    }
-};
-
-pub const NamedNodeMapIterator = struct {
-    index: u32 = 0,
-    map: *parser.NamedNodeMap,
-
-    pub const Return = struct {
-        done: bool,
-        value: ?*parser.Attribute,
-    };
-
-    pub fn _next(self: *NamedNodeMapIterator) !Return {
-        const e = try NamedNodeMap._item(self.map, self.index);
-        if (e == null) {
-            return .{
-                .value = null,
-                .done = true,
-            };
-        }
-
-        self.index += 1;
-        return .{
-            .value = e,
-            .done = false,
-        };
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.NamedNodeMap" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let a = document.getElementById('content').attributes", "undefined" },
-        .{ "a.length", "1" },
-        .{ "a.item(0)", "[object Attr]" },
-        .{ "a.item(1)", "null" },
-        .{ "a.getNamedItem('id')", "[object Attr]" },
-        .{ "a.getNamedItem('foo')", "null" },
-        .{ "a.setNamedItem(a.getNamedItem('id'))", "[object Attr]" },
-        .{ "a['id'].name", "id" },
-        .{ "a['id'].value", "content" },
-        .{ "a['other']", "undefined" },
-    }, .{});
-}

src/browser/dom/node.zig

@@ -1,722 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const generate = @import("../../runtime/generate.zig");
-
-const Page = @import("../page.zig").Page;
-const EventTarget = @import("event_target.zig").EventTarget;
-
-// DOM
-const Attr = @import("attribute.zig").Attr;
-const CData = @import("character_data.zig");
-const Element = @import("element.zig").Element;
-const NodeList = @import("nodelist.zig").NodeList;
-const Document = @import("document.zig").Document;
-const DocumentType = @import("document_type.zig").DocumentType;
-const DocumentFragment = @import("document_fragment.zig").DocumentFragment;
-const HTMLCollection = @import("html_collection.zig").HTMLCollection;
-const HTMLAllCollection = @import("html_collection.zig").HTMLAllCollection;
-const HTMLCollectionIterator = @import("html_collection.zig").HTMLCollectionIterator;
-const Walker = @import("walker.zig").WalkerDepthFirst;
-
-// HTML
-const HTML = @import("../html/html.zig");
-const HTMLElem = @import("../html/elements.zig");
-
-// Node interfaces
-pub const Interfaces = .{
-    Attr,
-    CData.CharacterData,
-    CData.Interfaces,
-    Element,
-    Document,
-    DocumentType,
-    DocumentFragment,
-    HTMLCollection,
-    HTMLAllCollection,
-    HTMLCollectionIterator,
-    HTML.Interfaces,
-};
-
-pub const Union = generate.Union(Interfaces);
-
-// Node implementation
-pub const Node = struct {
-    pub const Self = parser.Node;
-    pub const prototype = *EventTarget;
-    pub const subtype = .node;
-
-    pub fn toInterface(node: *parser.Node) !Union {
-        return switch (try parser.nodeType(node)) {
-            .element => try HTMLElem.toInterface(
-                Union,
-                @as(*parser.Element, @ptrCast(node)),
-            ),
-            .comment => .{ .Comment = @as(*parser.Comment, @ptrCast(node)) },
-            .text => .{ .Text = @as(*parser.Text, @ptrCast(node)) },
-            .cdata_section => .{ .CDATASection = @as(*parser.CDATASection, @ptrCast(node)) },
-            .processing_instruction => .{ .ProcessingInstruction = @as(*parser.ProcessingInstruction, @ptrCast(node)) },
-            .document => .{ .HTMLDocument = @as(*parser.DocumentHTML, @ptrCast(node)) },
-            .document_type => .{ .DocumentType = @as(*parser.DocumentType, @ptrCast(node)) },
-            .attribute => .{ .Attr = @as(*parser.Attribute, @ptrCast(node)) },
-            .document_fragment => .{ .DocumentFragment = @as(*parser.DocumentFragment, @ptrCast(node)) },
-            else => @panic("node type not handled"), // TODO
-        };
-    }
-
-    // class attributes
-
-    pub const _ELEMENT_NODE = @intFromEnum(parser.NodeType.element);
-    pub const _ATTRIBUTE_NODE = @intFromEnum(parser.NodeType.attribute);
-    pub const _TEXT_NODE = @intFromEnum(parser.NodeType.text);
-    pub const _CDATA_SECTION_NODE = @intFromEnum(parser.NodeType.cdata_section);
-    pub const _PROCESSING_INSTRUCTION_NODE = @intFromEnum(parser.NodeType.processing_instruction);
-    pub const _COMMENT_NODE = @intFromEnum(parser.NodeType.comment);
-    pub const _DOCUMENT_NODE = @intFromEnum(parser.NodeType.document);
-    pub const _DOCUMENT_TYPE_NODE = @intFromEnum(parser.NodeType.document_type);
-    pub const _DOCUMENT_FRAGMENT_NODE = @intFromEnum(parser.NodeType.document_fragment);
-
-    // These 3 are deprecated, but both Chrome and Firefox still expose them
-    pub const _ENTITY_REFERENCE_NODE = @intFromEnum(parser.NodeType.entity_reference);
-    pub const _ENTITY_NODE = @intFromEnum(parser.NodeType.entity);
-    pub const _NOTATION_NODE = @intFromEnum(parser.NodeType.notation);
-
-    // JS funcs
-    // --------
-
-    // Read-only attributes
-
-    pub fn get_firstChild(self: *parser.Node) !?Union {
-        const res = try parser.nodeFirstChild(self);
-        if (res == null) {
-            return null;
-        }
-        return try Node.toInterface(res.?);
-    }
-
-    pub fn get_lastChild(self: *parser.Node) !?Union {
-        const res = try parser.nodeLastChild(self);
-        if (res == null) {
-            return null;
-        }
-        return try Node.toInterface(res.?);
-    }
-
-    pub fn get_nextSibling(self: *parser.Node) !?Union {
-        const res = try parser.nodeNextSibling(self);
-        if (res == null) {
-            return null;
-        }
-        return try Node.toInterface(res.?);
-    }
-
-    pub fn get_previousSibling(self: *parser.Node) !?Union {
-        const res = try parser.nodePreviousSibling(self);
-        if (res == null) {
-            return null;
-        }
-        return try Node.toInterface(res.?);
-    }
-
-    pub fn get_parentNode(self: *parser.Node) !?Union {
-        const res = try parser.nodeParentNode(self);
-        if (res == null) {
-            return null;
-        }
-        return try Node.toInterface(res.?);
-    }
-
-    pub fn get_parentElement(self: *parser.Node) !?HTMLElem.Union {
-        const res = try parser.nodeParentElement(self);
-        if (res == null) {
-            return null;
-        }
-        return try HTMLElem.toInterface(HTMLElem.Union, @as(*parser.Element, @ptrCast(res.?)));
-    }
-
-    pub fn get_nodeName(self: *parser.Node) ![]const u8 {
-        return try parser.nodeName(self);
-    }
-
-    pub fn get_nodeType(self: *parser.Node) !u8 {
-        return @intFromEnum(try parser.nodeType(self));
-    }
-
-    pub fn get_ownerDocument(self: *parser.Node) !?*parser.DocumentHTML {
-        const res = try parser.nodeOwnerDocument(self);
-        if (res == null) {
-            return null;
-        }
-        return @as(*parser.DocumentHTML, @ptrCast(res.?));
-    }
-
-    pub fn get_isConnected(self: *parser.Node) !bool {
-        // TODO: handle Shadow DOM
-        if (try parser.nodeType(self) == .document) {
-            return true;
-        }
-        return try Node.get_parentNode(self) != null;
-    }
-
-    // Read/Write attributes
-
-    pub fn get_nodeValue(self: *parser.Node) !?[]const u8 {
-        return try parser.nodeValue(self);
-    }
-
-    pub fn set_nodeValue(self: *parser.Node, data: []u8) !void {
-        try parser.nodeSetValue(self, data);
-    }
-
-    pub fn get_textContent(self: *parser.Node) !?[]const u8 {
-        return try parser.nodeTextContent(self);
-    }
-
-    pub fn set_textContent(self: *parser.Node, data: []u8) !void {
-        return try parser.nodeSetTextContent(self, data);
-    }
-
-    // Methods
-
-    pub fn _appendChild(self: *parser.Node, child: *parser.Node) !Union {
-        // TODO: DocumentFragment special case
-        const res = try parser.nodeAppendChild(self, child);
-        return try Node.toInterface(res);
-    }
-
-    pub fn _cloneNode(self: *parser.Node, deep: ?bool) !Union {
-        const clone = try parser.nodeCloneNode(self, deep orelse false);
-        return try Node.toInterface(clone);
-    }
-
-    pub fn _compareDocumentPosition(self: *parser.Node, other: *parser.Node) !u32 {
-        if (self == other) return 0;
-
-        const docself = try parser.nodeOwnerDocument(self);
-        const docother = try parser.nodeOwnerDocument(other);
-
-        // Both are in different document.
-        if (docself == null or docother == null or docother.? != docself.?) {
-            return @intFromEnum(parser.DocumentPosition.disconnected);
-        }
-
-        // TODO Both are in a different trees in the same document.
-
-        const w = Walker{};
-        var next: ?*parser.Node = null;
-
-        // Is other a descendant of self?
-        while (true) {
-            next = try w.get_next(self, next) orelse break;
-            if (other == next) {
-                return @intFromEnum(parser.DocumentPosition.following) +
-                    @intFromEnum(parser.DocumentPosition.contained_by);
-            }
-        }
-
-        // Is self a descendant of other?
-        next = null;
-        while (true) {
-            next = try w.get_next(other, next) orelse break;
-            if (self == next) {
-                return @intFromEnum(parser.DocumentPosition.contains) +
-                    @intFromEnum(parser.DocumentPosition.preceding);
-            }
-        }
-
-        next = null;
-        while (true) {
-            next = try w.get_next(parser.documentToNode(docself.?), next) orelse break;
-            if (other == next) {
-                // other precedes self.
-                return @intFromEnum(parser.DocumentPosition.preceding);
-            }
-            if (self == next) {
-                // other follows self.
-                return @intFromEnum(parser.DocumentPosition.following);
-            }
-        }
-
-        return 0;
-    }
-
-    pub fn _contains(self: *parser.Node, other: *parser.Node) !bool {
-        return try parser.nodeContains(self, other);
-    }
-
-    // Returns itself or ancestor object inheriting from Node.
-    // - An Element inside a standard web page will return an HTMLDocument object representing the entire page (or <iframe>).
-    // - An Element inside a shadow DOM will return the associated ShadowRoot.
-    // - An Element that is not attached to a document or a shadow tree will return the root of the DOM tree it belongs to
-    pub fn _getRootNode(self: *parser.Node, options: ?struct { composed: bool = false }) !Union {
-        if (options) |options_| if (options_.composed) {
-            log.warn(.web_api, "not implemented", .{ .feature = "getRootNode composed" });
-        };
-        return try Node.toInterface(try parser.nodeGetRootNode(self));
-    }
-
-    pub fn _hasChildNodes(self: *parser.Node) !bool {
-        return try parser.nodeHasChildNodes(self);
-    }
-
-    pub fn get_childNodes(self: *parser.Node, page: *Page) !NodeList {
-        const allocator = page.arena;
-        var list: NodeList = .{};
-
-        var n = try parser.nodeFirstChild(self) orelse return list;
-        while (true) {
-            try list.append(allocator, n);
-            n = try parser.nodeNextSibling(n) orelse return list;
-        }
-    }
-
-    pub fn _insertBefore(self: *parser.Node, new_node: *parser.Node, ref_node_: ?*parser.Node) !Union {
-        if (ref_node_) |ref_node| {
-            return Node.toInterface(try parser.nodeInsertBefore(self, new_node, ref_node));
-        }
-        return _appendChild(self, new_node);
-    }
-
-    pub fn _isDefaultNamespace(self: *parser.Node, namespace: ?[]const u8) !bool {
-        return try parser.nodeIsDefaultNamespace(self, namespace);
-    }
-
-    pub fn _isEqualNode(self: *parser.Node, other: *parser.Node) !bool {
-        // TODO: other is not an optional parameter, but can be null.
-        return try parser.nodeIsEqualNode(self, other);
-    }
-
-    pub fn _isSameNode(self: *parser.Node, other: *parser.Node) !bool {
-        // TODO: other is not an optional parameter, but can be null.
-        // NOTE: there is no need to use isSameNode(); instead use the === strict equality operator
-        return try parser.nodeIsSameNode(self, other);
-    }
-
-    pub fn _lookupPrefix(self: *parser.Node, namespace: ?[]const u8) !?[]const u8 {
-        // TODO: other is not an optional parameter, but can be null.
-        if (namespace == null) {
-            return null;
-        }
-        if (std.mem.eql(u8, namespace.?, "")) {
-            return null;
-        }
-        return try parser.nodeLookupPrefix(self, namespace.?);
-    }
-
-    pub fn _lookupNamespaceURI(self: *parser.Node, prefix: ?[]const u8) !?[]const u8 {
-        // TODO: other is not an optional parameter, but can be null.
-        return try parser.nodeLookupNamespaceURI(self, prefix);
-    }
-
-    pub fn _normalize(self: *parser.Node) !void {
-        return try parser.nodeNormalize(self);
-    }
-
-    pub fn _removeChild(self: *parser.Node, child: *parser.Node) !Union {
-        const res = try parser.nodeRemoveChild(self, child);
-        return try Node.toInterface(res);
-    }
-
-    pub fn _replaceChild(self: *parser.Node, new_child: *parser.Node, old_child: *parser.Node) !Union {
-        const res = try parser.nodeReplaceChild(self, new_child, old_child);
-        return try Node.toInterface(res);
-    }
-
-    // Check if the hierarchy node tree constraints are respected.
-    // For now, it checks only if new nodes are not self.
-    // TODO implements the others contraints.
-    // see https://dom.spec.whatwg.org/#concept-node-tree
-    pub fn hierarchy(self: *parser.Node, nodes: []const NodeOrText) bool {
-        for (nodes) |n| {
-            if (n.is(self)) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    pub fn prepend(self: *parser.Node, nodes: []const NodeOrText) !void {
-        if (nodes.len == 0) {
-            return;
-        }
-
-        // check hierarchy
-        if (!hierarchy(self, nodes)) {
-            return parser.DOMError.HierarchyRequest;
-        }
-
-        const doc = (try parser.nodeOwnerDocument(self)) orelse return;
-
-        if (try parser.nodeFirstChild(self)) |first| {
-            for (nodes) |node| {
-                _ = try parser.nodeInsertBefore(self, try node.toNode(doc), first);
-            }
-            return;
-        }
-
-        for (nodes) |node| {
-            _ = try parser.nodeAppendChild(self, try node.toNode(doc));
-        }
-    }
-
-    pub fn append(self: *parser.Node, nodes: []const NodeOrText) !void {
-        if (nodes.len == 0) {
-            return;
-        }
-
-        // check hierarchy
-        if (!hierarchy(self, nodes)) {
-            return parser.DOMError.HierarchyRequest;
-        }
-
-        const doc = (try parser.nodeOwnerDocument(self)) orelse return;
-        for (nodes) |node| {
-            _ = try parser.nodeAppendChild(self, try node.toNode(doc));
-        }
-    }
-
-    pub fn replaceChildren(self: *parser.Node, nodes: []const NodeOrText) !void {
-        if (nodes.len == 0) {
-            return;
-        }
-
-        // check hierarchy
-        if (!hierarchy(self, nodes)) {
-            return parser.DOMError.HierarchyRequest;
-        }
-
-        // remove existing children
-        try removeChildren(self);
-
-        const doc = (try parser.nodeOwnerDocument(self)) orelse return;
-        // add new children
-        for (nodes) |node| {
-            _ = try parser.nodeAppendChild(self, try node.toNode(doc));
-        }
-    }
-
-    pub fn removeChildren(self: *parser.Node) !void {
-        if (!try parser.nodeHasChildNodes(self)) return;
-
-        const children = try parser.nodeGetChildNodes(self);
-        const ln = try parser.nodeListLength(children);
-        var i: u32 = 0;
-        while (i < ln) {
-            defer i += 1;
-            // we always retrieve the 0 index child on purpose: libdom nodelist
-            // are dynamic. So the next child to remove is always as pos 0.
-            const child = try parser.nodeListItem(children, 0) orelse continue;
-            _ = try parser.nodeRemoveChild(self, child);
-        }
-    }
-
-    pub fn before(self: *parser.Node, nodes: []const NodeOrText) !void {
-        const parent = try parser.nodeParentNode(self) orelse return;
-        const doc = (try parser.nodeOwnerDocument(parent)) orelse return;
-
-        var sibling: ?*parser.Node = self;
-        // have to find the first sibling that isn't in nodes
-        CHECK: while (sibling) |s| {
-            for (nodes) |n| {
-                if (n.is(s)) {
-                    sibling = try parser.nodePreviousSibling(s);
-                    continue :CHECK;
-                }
-            }
-            break;
-        }
-
-        if (sibling == null) {
-            sibling = try parser.nodeFirstChild(parent);
-        }
-
-        if (sibling) |ref_node| {
-            for (nodes) |node| {
-                _ = try parser.nodeInsertBefore(parent, try node.toNode(doc), ref_node);
-            }
-            return;
-        }
-
-        return Node.prepend(self, nodes);
-    }
-
-    pub fn after(self: *parser.Node, nodes: []const NodeOrText) !void {
-        const parent = try parser.nodeParentNode(self) orelse return;
-        const doc = (try parser.nodeOwnerDocument(parent)) orelse return;
-
-        // have to find the first sibling that isn't in nodes
-        var sibling = try parser.nodeNextSibling(self);
-        CHECK: while (sibling) |s| {
-            for (nodes) |n| {
-                if (n.is(s)) {
-                    sibling = try parser.nodeNextSibling(s);
-                    continue :CHECK;
-                }
-            }
-            break;
-        }
-
-        if (sibling) |ref_node| {
-            for (nodes) |node| {
-                _ = try parser.nodeInsertBefore(parent, try node.toNode(doc), ref_node);
-            }
-            return;
-        }
-
-        for (nodes) |node| {
-            _ = try parser.nodeAppendChild(parent, try node.toNode(doc));
-        }
-    }
-
-    // A lot of functions take either a node or text input.
-    // The text input is to be converted into a Text node.
-    pub const NodeOrText = union(enum) {
-        text: []const u8,
-        node: *parser.Node,
-
-        fn toNode(self: NodeOrText, doc: *parser.Document) !*parser.Node {
-            return switch (self) {
-                .node => |n| n,
-                .text => |txt| @alignCast(@ptrCast(try parser.documentCreateTextNode(doc, txt))),
-            };
-        }
-
-        // Whether the node represented by the NodeOrText is the same as the
-        // given Node. Always false for text values as these represent as-of-yet
-        // created Text nodes.
-        fn is(self: NodeOrText, other: *parser.Node) bool {
-            return switch (self) {
-                .text => false,
-                .node => |n| n == other,
-            };
-        }
-    };
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.node" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    {
-        var err_out: ?[]const u8 = null;
-        try runner.exec(
-            \\ function trimAndReplace(str) {
-            \\   str = str.replace(/(\r\n|\n|\r)/gm,'');
-            \\   str = str.replace(/\s+/g, ' ');
-            \\   str = str.trim();
-            \\   return str;
-            \\ }
-        , "trimAndReplace", &err_out);
-    }
-
-    try runner.testCases(&.{
-        .{ "document.body.compareDocumentPosition(document.firstChild); ", "10" },
-        .{ "document.getElementById(\"para-empty\").compareDocumentPosition(document.getElementById(\"content\"));", "10" },
-        .{ "document.getElementById(\"content\").compareDocumentPosition(document.getElementById(\"para-empty\"));", "20" },
-        .{ "document.getElementById(\"link\").compareDocumentPosition(document.getElementById(\"link\"));", "0" },
-        .{ "document.getElementById(\"para-empty\").compareDocumentPosition(document.getElementById(\"link\"));", "2" },
-        .{ "document.getElementById(\"link\").compareDocumentPosition(document.getElementById(\"para-empty\"));", "4" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.getElementById('content').getRootNode().__proto__.constructor.name", "HTMLDocument" },
-    }, .{});
-
-    try runner.testCases(&.{
-        // for next test cases
-        .{ "let content = document.getElementById('content')", "undefined" },
-        .{ "let link = document.getElementById('link')", "undefined" },
-        .{ "let first_child = content.firstChild.nextSibling", "undefined" }, // nextSibling because of line return \n
-
-        .{ "let body_first_child = document.body.firstChild", "undefined" },
-        .{ "body_first_child.localName", "div" },
-        .{ "body_first_child.__proto__.constructor.name", "HTMLDivElement" },
-        .{ "document.getElementById('para-empty').firstChild.firstChild", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let last_child = content.lastChild.previousSibling", "undefined" }, // previousSibling because of line return \n
-        .{ "last_child.__proto__.constructor.name", "Comment" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let next_sibling = link.nextSibling.nextSibling", "undefined" },
-        .{ "next_sibling.localName", "p" },
-        .{ "next_sibling.__proto__.constructor.name", "HTMLParagraphElement" },
-        .{ "content.nextSibling.nextSibling", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let prev_sibling = document.getElementById('para-empty').previousSibling.previousSibling", "undefined" },
-        .{ "prev_sibling.localName", "a" },
-        .{ "prev_sibling.__proto__.constructor.name", "HTMLAnchorElement" },
-        .{ "content.previousSibling", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let parent = document.getElementById('para').parentElement", "undefined" },
-        .{ "parent.localName", "div" },
-        .{ "parent.__proto__.constructor.name", "HTMLDivElement" },
-        .{ "let h = content.parentElement.parentElement", "undefined" },
-        .{ "h.parentElement", "null" },
-        .{ "h.parentNode.__proto__.constructor.name", "HTMLDocument" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "first_child.nodeName === 'A'", "true" },
-        .{ "link.firstChild.nodeName === '#text'", "true" },
-        .{ "last_child.nodeName === '#comment'", "true" },
-        .{ "document.nodeName === '#document'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "first_child.nodeType === 1", "true" },
-        .{ "link.firstChild.nodeType === 3", "true" },
-        .{ "last_child.nodeType === 8", "true" },
-        .{ "document.nodeType === 9", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let owner = content.ownerDocument", "undefined" },
-        .{ "owner.__proto__.constructor.name", "HTMLDocument" },
-        .{ "document.ownerDocument", "null" },
-        .{ "let owner2 = document.createElement('div').ownerDocument", "undefined" },
-        .{ "owner2.__proto__.constructor.name", "HTMLDocument" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "content.isConnected", "true" },
-        .{ "document.isConnected", "true" },
-        .{ "document.createElement('div').isConnected", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "last_child.nodeValue === 'comment'", "true" },
-        .{ "link.nodeValue === null", "true" },
-        .{ "let text = link.firstChild", "undefined" },
-        .{ "text.nodeValue === 'OK'", "true" },
-        .{ "text.nodeValue = 'OK modified'", "OK modified" },
-        .{ "text.nodeValue === 'OK modified'", "true" },
-        .{ "link.nodeValue = 'nothing'", "nothing" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "text.textContent === 'OK modified'", "true" },
-        .{ "trimAndReplace(content.textContent) === 'OK modified And'", "true" },
-        .{ "text.textContent = 'OK'", "OK" },
-        .{ "text.textContent", "OK" },
-        .{ "trimAndReplace(document.getElementById('para-empty').textContent)", "" },
-        .{ "document.getElementById('para-empty').textContent = 'OK'", "OK" },
-        .{ "document.getElementById('para-empty').firstChild.nodeName === '#text'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let append = document.createElement('h1')", "undefined" },
-        .{ "content.appendChild(append).toString()", "[object HTMLHeadingElement]" },
-        .{ "content.lastChild.__proto__.constructor.name", "HTMLHeadingElement" },
-        .{ "content.appendChild(link).toString()", "[object HTMLAnchorElement]" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let clone = link.cloneNode()", "undefined" },
-        .{ "clone.toString()", "[object HTMLAnchorElement]" },
-        .{ "clone.parentNode === null", "true" },
-        .{ "clone.firstChild === null", "true" },
-        .{ "let clone_deep = link.cloneNode(true)", "undefined" },
-        .{ "clone_deep.firstChild.nodeName === '#text'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "link.contains(text)", "true" },
-        .{ "text.contains(link)", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "link.hasChildNodes()", "true" },
-        .{ "text.hasChildNodes()", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "link.childNodes.length", "1" },
-        .{ "text.childNodes.length", "0" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let insertBefore = document.createElement('a')", "undefined" },
-        .{ "link.insertBefore(insertBefore, text) !== undefined", "true" },
-        .{ "link.firstChild.localName === 'a'", "true" },
-
-        .{ "let insertBefore2 = document.createElement('b')", null },
-        .{ "link.insertBefore(insertBefore2, null).localName", "b" },
-        .{ "link.childNodes[link.childNodes.length - 1].localName", "b" },
-    }, .{});
-
-    try runner.testCases(&.{
-        // TODO: does not seems to work
-        // .{ "link.isDefaultNamespace('')", "true" },
-        .{ "link.isDefaultNamespace('false')", "false" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let equal1 = document.createElement('a')", "undefined" },
-        .{ "let equal2 = document.createElement('a')", "undefined" },
-        .{ "equal1.textContent = 'is equal'", "is equal" },
-        .{ "equal2.textContent = 'is equal'", "is equal" },
-        // TODO: does not seems to work
-        // .{ "equal1.isEqualNode(equal2)", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.body.isSameNode(document.body)", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        // TODO: no test
-        .{ "link.normalize()", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "content.removeChild(append) !== undefined", "true" },
-        .{ "last_child.__proto__.constructor.name !== 'HTMLHeadingElement'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let replace = document.createElement('div')", "undefined" },
-        .{ "link.replaceChild(replace, insertBefore) !== undefined", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "Node.ELEMENT_NODE", "1" },
-        .{ "Node.ATTRIBUTE_NODE", "2" },
-        .{ "Node.TEXT_NODE", "3" },
-        .{ "Node.CDATA_SECTION_NODE", "4" },
-        .{ "Node.PROCESSING_INSTRUCTION_NODE", "7" },
-        .{ "Node.COMMENT_NODE", "8" },
-        .{ "Node.DOCUMENT_NODE", "9" },
-        .{ "Node.DOCUMENT_TYPE_NODE", "10" },
-        .{ "Node.DOCUMENT_FRAGMENT_NODE", "11" },
-        .{ "Node.ENTITY_REFERENCE_NODE", "5" },
-        .{ "Node.ENTITY_NODE", "6" },
-        .{ "Node.NOTATION_NODE", "12" },
-    }, .{});
-}

src/browser/dom/node_filter.zig

@@ -1,52 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-pub const NodeFilter = struct {
-    pub const _FILTER_ACCEPT: u16 = 1;
-    pub const _FILTER_REJECT: u16 = 2;
-    pub const _FILTER_SKIP: u16 = 3;
-    pub const _SHOW_ALL: u32 = std.math.maxInt(u32);
-    pub const _SHOW_ELEMENT: u32 = 0b1;
-    pub const _SHOW_ATTRIBUTE: u32 = 0b10;
-    pub const _SHOW_TEXT: u32 = 0b100;
-    pub const _SHOW_CDATA_SECTION: u32 = 0b1000;
-    pub const _SHOW_ENTITY_REFERENCE: u32 = 0b10000;
-    pub const _SHOW_ENTITY: u32 = 0b100000;
-    pub const _SHOW_PROCESSING_INSTRUCTION: u32 = 0b1000000;
-    pub const _SHOW_COMMENT: u32 = 0b10000000;
-    pub const _SHOW_DOCUMENT: u32 = 0b100000000;
-    pub const _SHOW_DOCUMENT_TYPE: u32 = 0b1000000000;
-    pub const _SHOW_DOCUMENT_FRAGMENT: u32 = 0b10000000000;
-    pub const _SHOW_NOTATION: u32 = 0b100000000000;
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.NodeFilter" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "NodeFilter.FILTER_ACCEPT", "1" },
-        .{ "NodeFilter.FILTER_REJECT", "2" },
-        .{ "NodeFilter.FILTER_SKIP", "3" },
-        .{ "NodeFilter.SHOW_ALL", "4294967295" },
-        .{ "NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT", "129" },
-    }, .{});
-}

src/browser/dom/nodelist.zig

@@ -1,198 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-
-const JsThis = @import("../env.zig").JsThis;
-const Function = @import("../env.zig").Function;
-
-const NodeUnion = @import("node.zig").Union;
-const Node = @import("node.zig").Node;
-
-const U32Iterator = @import("../iterator/iterator.zig").U32Iterator;
-
-const DOMException = @import("exceptions.zig").DOMException;
-
-pub const Interfaces = .{
-    NodeListIterator,
-    NodeList,
-};
-
-pub const NodeListIterator = struct {
-    coll: *NodeList,
-    index: u32 = 0,
-
-    pub const Return = struct {
-        value: ?NodeUnion,
-        done: bool,
-    };
-
-    pub fn _next(self: *NodeListIterator) !Return {
-        const e = try self.coll._item(self.index);
-        if (e == null) {
-            return Return{
-                .value = null,
-                .done = true,
-            };
-        }
-
-        self.index += 1;
-        return Return{
-            .value = e,
-            .done = false,
-        };
-    }
-};
-
-pub const NodeListEntriesIterator = struct {
-    coll: *NodeList,
-    index: u32 = 0,
-
-    pub const Return = struct {
-        value: ?NodeUnion,
-        done: bool,
-    };
-
-    pub fn _next(self: *NodeListEntriesIterator) !Return {
-        const e = try self.coll._item(self.index);
-        if (e == null) {
-            return Return{
-                .value = null,
-                .done = true,
-            };
-        }
-
-        self.index += 1;
-        return Return{
-            .value = e,
-            .done = false,
-        };
-    }
-};
-
-// Nodelist is implemented in pure Zig b/c libdom's NodeList doesn't allow to
-// append nodes.
-// WEB IDL https://dom.spec.whatwg.org/#nodelist
-//
-// TODO: a Nodelist can be either static or live. But the current
-// implementation allows only static nodelist.
-// see https://dom.spec.whatwg.org/#old-style-collections
-pub const NodeList = struct {
-    pub const Exception = DOMException;
-    const NodesArrayList = std.ArrayListUnmanaged(*parser.Node);
-
-    nodes: NodesArrayList = .{},
-
-    pub fn deinit(self: *NodeList, alloc: std.mem.Allocator) void {
-        // TODO unref all nodes
-        self.nodes.deinit(alloc);
-    }
-
-    pub fn append(self: *NodeList, alloc: std.mem.Allocator, node: *parser.Node) !void {
-        try self.nodes.append(alloc, node);
-    }
-
-    pub fn get_length(self: *NodeList) u32 {
-        return @intCast(self.nodes.items.len);
-    }
-
-    pub fn _item(self: *const NodeList, index: u32) !?NodeUnion {
-        if (index >= self.nodes.items.len) {
-            return null;
-        }
-
-        const n = self.nodes.items[index];
-        return try Node.toInterface(n);
-    }
-
-    // This code works, but it's _MUCH_ slower than using postAttach. The benefit
-    // of this version, is that it's "live"..but we're talking many orders of
-    // magnitude slower.
-    //
-    // You can test it by commenting out `postAttach`, uncommenting this and
-    // running:
-    //    zig build wpt --  tests/wpt/dom/nodes/NodeList-static-length-getter-tampered-indexOf-1.html
-    //
-    // I think this _is_ the right way to do it, but I must be doing something
-    // wrong to make it so slow.
-    // pub fn indexed_get(self: *const NodeList, index: u32, has_value: *bool) !?NodeUnion {
-    //     return (try self._item(index)) orelse {
-    //         has_value.* = false;
-    //         return null;
-    //     };
-    // }
-
-    pub fn _forEach(self: *NodeList, cbk: Function) !void { // TODO handle thisArg
-        for (self.nodes.items, 0..) |n, i| {
-            const ii: u32 = @intCast(i);
-            var result: Function.Result = undefined;
-            cbk.tryCall(void, .{ n, ii, self }, &result) catch {
-                log.debug(.user_script, "forEach callback", .{ .err = result.exception, .stack = result.stack });
-            };
-        }
-    }
-
-    pub fn _keys(self: *NodeList) U32Iterator {
-        return .{
-            .length = self.get_length(),
-        };
-    }
-
-    pub fn _values(self: *NodeList) NodeListIterator {
-        return .{
-            .coll = self,
-        };
-    }
-
-    pub fn _symbol_iterator(self: *NodeList) NodeListIterator {
-        return self._values();
-    }
-
-    // TODO entries() https://developer.mozilla.org/en-US/docs/Web/API/NodeList/entries
-    pub fn postAttach(self: *NodeList, js_this: JsThis) !void {
-        const len = self.get_length();
-        for (0..len) |i| {
-            const node = try self._item(@intCast(i)) orelse unreachable;
-            try js_this.setIndex(@intCast(i), node, .{});
-        }
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.NodeList" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let list = document.getElementById('content').childNodes", "undefined" },
-        .{ "list.length", "9" },
-        .{ "list[0].__proto__.constructor.name", "Text" },
-        .{
-            \\  let i = 0;
-            \\  list.forEach(function (n, idx) {
-            \\    i += idx;
-            \\  });
-            \\  i;
-            ,
-            "36",
-        },
-    }, .{});
-}

src/browser/dom/processing_instruction.zig

@@ -1,116 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-const Node = @import("node.zig").Node;
-const Page = @import("../page.zig").Page;
-
-// https://dom.spec.whatwg.org/#processinginstruction
-pub const ProcessingInstruction = struct {
-    pub const Self = parser.ProcessingInstruction;
-
-    // TODO for libdom processing instruction inherit from node.
-    // But the spec says it must inherit from CDATA.
-    pub const prototype = *Node;
-    pub const subtype = .node;
-
-    pub fn get_target(self: *parser.ProcessingInstruction) ![]const u8 {
-        // libdom stores the ProcessingInstruction target in the node's name.
-        return try parser.nodeName(parser.processingInstructionToNode(self));
-    }
-
-    // There's something wrong when we try to clone a ProcessInstruction normally.
-    // The resulting object can't be cast back into a node (it crashes). This is
-    // a simple workaround.
-    pub fn _cloneNode(self: *parser.ProcessingInstruction, _: ?bool, page: *Page) !*parser.ProcessingInstruction {
-        return try parser.documentCreateProcessingInstruction(
-            @ptrCast(page.window.document),
-            try get_target(self),
-            (try get_data(self)) orelse "",
-        );
-    }
-
-    pub fn get_data(self: *parser.ProcessingInstruction) !?[]const u8 {
-        return try parser.nodeValue(parser.processingInstructionToNode(self));
-    }
-
-    pub fn set_data(self: *parser.ProcessingInstruction, data: []u8) !void {
-        try parser.nodeSetValue(parser.processingInstructionToNode(self), data);
-    }
-
-    // netsurf's ProcessInstruction doesn't implement the dom_node_get_attributes
-    // and thus will crash if we try to call nodeIsEqualNode.
-    pub fn _isEqualNode(self: *parser.ProcessingInstruction, other_node: *parser.Node) !bool {
-        if (try parser.nodeType(other_node) != .processing_instruction) {
-            return false;
-        }
-
-        const other: *parser.ProcessingInstruction = @ptrCast(other_node);
-
-        if (std.mem.eql(u8, try get_target(self), try get_target(other)) == false) {
-            return false;
-        }
-
-        {
-            const self_data = try get_data(self);
-            const other_data = try get_data(other);
-            if (self_data == null and other_data != null) {
-                return false;
-            }
-            if (self_data != null and other_data == null) {
-                return false;
-            }
-            if (std.mem.eql(u8, self_data.?, other_data.?) == false) {
-                return false;
-            }
-        }
-
-        return true;
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.ProcessingInstruction" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let pi = document.createProcessingInstruction('foo', 'bar')", "undefined" },
-        .{ "pi.target", "foo" },
-        .{ "pi.data", "bar" },
-        .{ "pi.data = 'foo'", "foo" },
-        .{ "pi.data", "foo" },
-
-        .{ "let pi2 = pi.cloneNode()", "undefined" },
-        .{ "pi2.nodeType", "7" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let pi11 = document.createProcessingInstruction('target1', 'data1');", "undefined" },
-        .{ "let pi12 = document.createProcessingInstruction('target2', 'data2');", "undefined" },
-        .{ "let pi13 = document.createProcessingInstruction('target1', 'data1');", "undefined" },
-        .{ "pi11.isEqualNode(pi11)", "true" },
-        .{ "pi11.isEqualNode(pi13)", "true" },
-        .{ "pi11.isEqualNode(pi12)", "false" },
-        .{ "pi12.isEqualNode(pi13)", "false" },
-        .{ "pi11.isEqualNode(document)", "false" },
-        .{ "document.isEqualNode(pi11)", "false" },
-    }, .{});
-}

src/browser/dom/text.zig

@@ -1,86 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const CharacterData = @import("character_data.zig").CharacterData;
-const CDATASection = @import("cdata_section.zig").CDATASection;
-
-// Text interfaces
-pub const Interfaces = .{
-    CDATASection,
-};
-
-pub const Text = struct {
-    pub const Self = parser.Text;
-    pub const prototype = *CharacterData;
-    pub const subtype = .node;
-
-    pub fn constructor(data: ?[]const u8, page: *const Page) !*parser.Text {
-        return parser.documentCreateTextNode(
-            parser.documentHTMLToDocument(page.window.document),
-            data orelse "",
-        );
-    }
-
-    // JS funcs
-    // --------
-
-    // Read attributes
-
-    pub fn get_wholeText(self: *parser.Text) ![]const u8 {
-        return try parser.textWholdeText(self);
-    }
-
-    // JS methods
-    // ----------
-
-    pub fn _splitText(self: *parser.Text, offset: u32) !*parser.Text {
-        return try parser.textSplitText(self, offset);
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.Text" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let t = new Text('foo')", "undefined" },
-        .{ "t.data", "foo" },
-
-        .{ "let emptyt = new Text()", "undefined" },
-        .{ "emptyt.data", "" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let text = document.getElementById('link').firstChild", "undefined" },
-        .{ "text.wholeText === 'OK'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "text.data = 'OK modified'", "OK modified" },
-        .{ "let split = text.splitText('OK'.length)", "undefined" },
-        .{ "split.data === ' modified'", "true" },
-        .{ "text.data === 'OK'", "true" },
-    }, .{});
-}

src/browser/dom/token_list.zig

@@ -1,245 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const iterator = @import("../iterator/iterator.zig");
-
-const Function = @import("../env.zig").Function;
-const JsObject = @import("../env.zig").JsObject;
-const DOMException = @import("exceptions.zig").DOMException;
-
-pub const Interfaces = .{
-    DOMTokenList,
-    DOMTokenListIterable,
-    TokenListEntriesIterator,
-    TokenListEntriesIterator.Iterable,
-};
-
-// https://dom.spec.whatwg.org/#domtokenlist
-pub const DOMTokenList = struct {
-    pub const Self = parser.TokenList;
-    pub const Exception = DOMException;
-
-    pub fn get_length(self: *parser.TokenList) !u32 {
-        return parser.tokenListGetLength(self);
-    }
-
-    pub fn _item(self: *parser.TokenList, index: u32) !?[]const u8 {
-        return parser.tokenListItem(self, index);
-    }
-
-    pub fn _contains(self: *parser.TokenList, token: []const u8) !bool {
-        return parser.tokenListContains(self, token);
-    }
-
-    pub fn _add(self: *parser.TokenList, tokens: []const []const u8) !void {
-        for (tokens) |token| {
-            try parser.tokenListAdd(self, token);
-        }
-    }
-
-    pub fn _remove(self: *parser.TokenList, tokens: []const []const u8) !void {
-        for (tokens) |token| {
-            try parser.tokenListRemove(self, token);
-        }
-    }
-
-    /// If token is the empty string, then throw a "SyntaxError" DOMException.
-    /// If token contains any ASCII whitespace, then throw an
-    /// "InvalidCharacterError" DOMException.
-    fn validateToken(token: []const u8) !void {
-        if (token.len == 0) {
-            return parser.DOMError.Syntax;
-        }
-        for (token) |c| {
-            if (std.ascii.isWhitespace(c)) return parser.DOMError.InvalidCharacter;
-        }
-    }
-
-    pub fn _toggle(self: *parser.TokenList, token: []const u8, force: ?bool) !bool {
-        try validateToken(token);
-        const exists = try parser.tokenListContains(self, token);
-        if (exists) {
-            if (force == null or force.? == false) {
-                try parser.tokenListRemove(self, token);
-                return false;
-            }
-            return true;
-        }
-
-        if (force == null or force.? == true) {
-            try parser.tokenListAdd(self, token);
-            return true;
-        }
-        return false;
-    }
-
-    pub fn _replace(self: *parser.TokenList, token: []const u8, new: []const u8) !bool {
-        try validateToken(token);
-        try validateToken(new);
-        const exists = try parser.tokenListContains(self, token);
-        if (!exists) return false;
-        try parser.tokenListRemove(self, token);
-        try parser.tokenListAdd(self, new);
-        return true;
-    }
-
-    // TODO to implement.
-    pub fn _supports(_: *parser.TokenList, token: []const u8) !bool {
-        try validateToken(token);
-        return error.TypeError;
-    }
-
-    pub fn get_value(self: *parser.TokenList) !?[]const u8 {
-        return (try parser.tokenListGetValue(self)) orelse "";
-    }
-
-    pub fn set_value(self: *parser.TokenList, value: []const u8) !void {
-        return parser.tokenListSetValue(self, value);
-    }
-
-    pub fn _toString(self: *parser.TokenList) ![]const u8 {
-        return (try get_value(self)) orelse "";
-    }
-
-    pub fn _keys(self: *parser.TokenList) !iterator.U32Iterator {
-        return .{ .length = try get_length(self) };
-    }
-
-    pub fn _values(self: *parser.TokenList) DOMTokenListIterable {
-        return DOMTokenListIterable.init(.{ .token_list = self });
-    }
-
-    pub fn _entries(self: *parser.TokenList) TokenListEntriesIterator {
-        return TokenListEntriesIterator.init(.{ .token_list = self });
-    }
-
-    pub fn _symbol_iterator(self: *parser.TokenList) DOMTokenListIterable {
-        return _values(self);
-    }
-
-    // TODO handle thisArg
-    pub fn _forEach(self: *parser.TokenList, cbk: Function, this_arg: JsObject) !void {
-        var entries = _entries(self);
-        while (try entries._next()) |entry| {
-            var result: Function.Result = undefined;
-            cbk.tryCallWithThis(void, this_arg, .{ entry.@"1", entry.@"0", self }, &result) catch {
-                log.debug(.user_script, "callback error", .{
-                    .err = result.exception,
-                    .stack = result.stack,
-                    .soure = "tokenList foreach",
-                });
-            };
-        }
-    }
-};
-
-const DOMTokenListIterable = iterator.Iterable(Iterator, "DOMTokenListIterable");
-const TokenListEntriesIterator = iterator.NumericEntries(Iterator, "TokenListEntriesIterator");
-
-pub const Iterator = struct {
-    index: u32 = 0,
-    token_list: *parser.TokenList,
-
-    // used when wrapped in an iterator.NumericEntries
-    pub const Error = parser.DOMError;
-
-    pub fn _next(self: *Iterator) !?[]const u8 {
-        const index = self.index;
-        self.index = index + 1;
-        return DOMTokenList._item(self.token_list, index);
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.DOM.TokenList" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let gs = document.getElementById('para-empty')", "undefined" },
-        .{ "let cl = gs.classList", "undefined" },
-        .{ "gs.className", "ok empty" },
-        .{ "cl.value", "ok empty" },
-        .{ "cl.length", "2" },
-        .{ "gs.className = 'foo bar baz'", "foo bar baz" },
-        .{ "gs.className", "foo bar baz" },
-        .{ "cl.length", "3" },
-        .{ "gs.className = 'ok empty'", "ok empty" },
-        .{ "cl.length", "2" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let cl2 = gs.classList", "undefined" },
-        .{ "cl2.length", "2" },
-        .{ "cl2.item(0)", "ok" },
-        .{ "cl2.item(1)", "empty" },
-        .{ "cl2.contains('ok')", "true" },
-        .{ "cl2.contains('nok')", "false" },
-        .{ "cl2.add('foo', 'bar', 'baz')", "undefined" },
-        .{ "cl2.length", "5" },
-        .{ "cl2.remove('foo', 'bar', 'baz')", "undefined" },
-        .{ "cl2.length", "2" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let cl3 = gs.classList", "undefined" },
-        .{ "cl3.toggle('ok')", "false" },
-        .{ "cl3.toggle('ok')", "true" },
-        .{ "cl3.length", "2" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let cl4 = gs.classList", "undefined" },
-        .{ "cl4.replace('ok', 'nok')", "true" },
-        .{ "cl4.value", "empty nok" },
-        .{ "cl4.replace('nok', 'ok')", "true" },
-        .{ "cl4.value", "empty ok" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let cl5 = gs.classList", "undefined" },
-        .{ "let keys = [...cl5.keys()]", "undefined" },
-        .{ "keys.length", "2" },
-        .{ "keys[0]", "0" },
-        .{ "keys[1]", "1" },
-
-        .{ "let values = [...cl5.values()]", "undefined" },
-        .{ "values.length", "2" },
-        .{ "values[0]", "empty" },
-        .{ "values[1]", "ok" },
-
-        .{ "let entries = [...cl5.entries()]", "undefined" },
-        .{ "entries.length", "2" },
-        .{ "entries[0]", "0,empty" },
-        .{ "entries[1]", "1,ok" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "let cl6 = gs.classList", "undefined" },
-        .{ "cl6.value = 'a  b  ccc'", "a  b  ccc" },
-        .{ "cl6.value", "a  b  ccc" },
-        .{ "cl6.toString()", "a  b  ccc" },
-    }, .{});
-}

src/browser/dom/tree_walker.zig

@@ -1,293 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const parser = @import("../netsurf.zig");
-
-const NodeFilter = @import("node_filter.zig").NodeFilter;
-const Env = @import("../env.zig").Env;
-const Page = @import("../page.zig").Page;
-
-// https://developer.mozilla.org/en-US/docs/Web/API/TreeWalker
-pub const TreeWalker = struct {
-    root: *parser.Node,
-    current_node: *parser.Node,
-    what_to_show: u32,
-    filter: ?Env.Function,
-
-    pub const TreeWalkerOpts = union(enum) {
-        function: Env.Function,
-        object: struct { acceptNode: Env.Function },
-    };
-
-    pub fn init(node: *parser.Node, what_to_show: ?u32, filter: ?TreeWalkerOpts) !TreeWalker {
-        var filter_func: ?Env.Function = null;
-
-        if (filter) |f| {
-            filter_func = switch (f) {
-                .function => |func| func,
-                .object => |o| o.acceptNode,
-            };
-        }
-
-        return .{
-            .root = node,
-            .current_node = node,
-            .what_to_show = what_to_show orelse NodeFilter._SHOW_ALL,
-            .filter = filter_func,
-        };
-    }
-
-    const VerifyResult = enum { accept, skip, reject };
-
-    fn verify(self: *const TreeWalker, node: *parser.Node) !VerifyResult {
-        const node_type = try parser.nodeType(node);
-        const what_to_show = self.what_to_show;
-
-        // Verify that we can show this node type.
-        if (!switch (node_type) {
-            .attribute => what_to_show & NodeFilter._SHOW_ATTRIBUTE != 0,
-            .cdata_section => what_to_show & NodeFilter._SHOW_CDATA_SECTION != 0,
-            .comment => what_to_show & NodeFilter._SHOW_COMMENT != 0,
-            .document => what_to_show & NodeFilter._SHOW_DOCUMENT != 0,
-            .document_fragment => what_to_show & NodeFilter._SHOW_DOCUMENT_FRAGMENT != 0,
-            .document_type => what_to_show & NodeFilter._SHOW_DOCUMENT_TYPE != 0,
-            .element => what_to_show & NodeFilter._SHOW_ELEMENT != 0,
-            .entity => what_to_show & NodeFilter._SHOW_ENTITY != 0,
-            .entity_reference => what_to_show & NodeFilter._SHOW_ENTITY_REFERENCE != 0,
-            .notation => what_to_show & NodeFilter._SHOW_NOTATION != 0,
-            .processing_instruction => what_to_show & NodeFilter._SHOW_PROCESSING_INSTRUCTION != 0,
-            .text => what_to_show & NodeFilter._SHOW_TEXT != 0,
-        }) return .reject;
-
-        // Verify that we aren't filtering it out.
-        if (self.filter) |f| {
-            const filter = try f.call(u32, .{node});
-            return switch (filter) {
-                NodeFilter._FILTER_ACCEPT => .accept,
-                NodeFilter._FILTER_REJECT => .reject,
-                NodeFilter._FILTER_SKIP => .skip,
-                else => .reject,
-            };
-        } else return .accept;
-    }
-
-    pub fn get_root(self: *TreeWalker) *parser.Node {
-        return self.root;
-    }
-
-    pub fn get_currentNode(self: *TreeWalker) *parser.Node {
-        return self.current_node;
-    }
-
-    pub fn get_whatToShow(self: *TreeWalker) u32 {
-        return self.what_to_show;
-    }
-
-    pub fn get_filter(self: *TreeWalker) ?Env.Function {
-        return self.filter;
-    }
-
-    pub fn set_currentNode(self: *TreeWalker, node: *parser.Node) !void {
-        self.current_node = node;
-    }
-
-    fn firstChild(self: *const TreeWalker, node: *parser.Node) !?*parser.Node {
-        const children = try parser.nodeGetChildNodes(node);
-        const child_count = try parser.nodeListLength(children);
-
-        for (0..child_count) |i| {
-            const index: u32 = @intCast(i);
-            const child = (try parser.nodeListItem(children, index)) orelse return null;
-
-            switch (try self.verify(child)) {
-                .accept => return child,
-                .reject => continue,
-                .skip => if (try self.firstChild(child)) |gchild| return gchild,
-            }
-        }
-
-        return null;
-    }
-
-    fn lastChild(self: *const TreeWalker, node: *parser.Node) !?*parser.Node {
-        const children = try parser.nodeGetChildNodes(node);
-        const child_count = try parser.nodeListLength(children);
-
-        var index: u32 = child_count;
-        while (index > 0) {
-            index -= 1;
-            const child = (try parser.nodeListItem(children, index)) orelse return null;
-
-            switch (try self.verify(child)) {
-                .accept => return child,
-                .reject => continue,
-                .skip => if (try self.lastChild(child)) |gchild| return gchild,
-            }
-        }
-
-        return null;
-    }
-
-    fn nextSibling(self: *const TreeWalker, node: *parser.Node) !?*parser.Node {
-        var current = node;
-
-        while (true) {
-            current = (try parser.nodeNextSibling(current)) orelse return null;
-
-            switch (try self.verify(current)) {
-                .accept => return current,
-                .skip, .reject => continue,
-            }
-        }
-
-        return null;
-    }
-
-    fn previousSibling(self: *const TreeWalker, node: *parser.Node) !?*parser.Node {
-        var current = node;
-
-        while (true) {
-            current = (try parser.nodePreviousSibling(current)) orelse return null;
-
-            switch (try self.verify(current)) {
-                .accept => return current,
-                .skip, .reject => continue,
-            }
-        }
-
-        return null;
-    }
-
-    fn parentNode(self: *const TreeWalker, node: *parser.Node) !?*parser.Node {
-        if (self.root == node) return null;
-
-        var current = node;
-        while (true) {
-            if (current == self.root) return null;
-            current = (try parser.nodeParentNode(current)) orelse return null;
-
-            switch (try self.verify(current)) {
-                .accept => return current,
-                .reject, .skip => continue,
-            }
-        }
-    }
-
-    pub fn _firstChild(self: *TreeWalker) !?*parser.Node {
-        if (try self.firstChild(self.current_node)) |child| {
-            self.current_node = child;
-            return child;
-        }
-
-        return null;
-    }
-
-    pub fn _lastChild(self: *TreeWalker) !?*parser.Node {
-        if (try self.lastChild(self.current_node)) |child| {
-            self.current_node = child;
-            return child;
-        }
-
-        return null;
-    }
-
-    pub fn _nextNode(self: *TreeWalker) !?*parser.Node {
-        if (try self.firstChild(self.current_node)) |child| {
-            self.current_node = child;
-            return child;
-        }
-
-        var current = self.current_node;
-        while (current != self.root) {
-            if (try self.nextSibling(current)) |sibling| {
-                self.current_node = sibling;
-                return sibling;
-            }
-
-            current = (try parser.nodeParentNode(current)) orelse break;
-        }
-
-        return null;
-    }
-
-    pub fn _nextSibling(self: *TreeWalker) !?*parser.Node {
-        if (try self.nextSibling(self.current_node)) |sibling| {
-            self.current_node = sibling;
-            return sibling;
-        }
-
-        return null;
-    }
-
-    pub fn _parentNode(self: *TreeWalker) !?*parser.Node {
-        if (try self.parentNode(self.current_node)) |parent| {
-            self.current_node = parent;
-            return parent;
-        }
-
-        return null;
-    }
-
-    pub fn _previousNode(self: *TreeWalker) !?*parser.Node {
-        var current = self.current_node;
-        while (try parser.nodePreviousSibling(current)) |previous| {
-            current = previous;
-
-            switch (try self.verify(current)) {
-                .accept => {
-                    // Get last child if it has one.
-                    if (try self.lastChild(current)) |child| {
-                        self.current_node = child;
-                        return child;
-                    }
-
-                    // Otherwise, this node is our previous one.
-                    self.current_node = current;
-                    return current;
-                },
-                .reject => continue,
-                .skip => {
-                    // Get last child if it has one.
-                    if (try self.lastChild(current)) |child| {
-                        self.current_node = child;
-                        return child;
-                    }
-                },
-            }
-        }
-
-        if (current != self.root) {
-            if (try self.parentNode(current)) |parent| {
-                self.current_node = parent;
-                return parent;
-            }
-        }
-
-        return null;
-    }
-
-    pub fn _previousSibling(self: *TreeWalker) !?*parser.Node {
-        if (try self.previousSibling(self.current_node)) |sibling| {
-            self.current_node = sibling;
-            return sibling;
-        }
-
-        return null;
-    }
-};

src/browser/dom/walker.zig

@@ -1,102 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-
-pub const Walker = union(enum) {
-    walkerDepthFirst: WalkerDepthFirst,
-    walkerChildren: WalkerChildren,
-    walkerNone: WalkerNone,
-
-    pub fn get_next(self: Walker, root: *parser.Node, cur: ?*parser.Node) !?*parser.Node {
-        switch (self) {
-            inline else => |case| return case.get_next(root, cur),
-        }
-    }
-};
-
-// WalkerDepthFirst iterates over the DOM tree to return the next following
-// node or null at the end.
-//
-// This implementation is a zig version of Netsurf code.
-// http://source.netsurf-browser.org/libdom.git/tree/src/html/html_collection.c#n177
-//
-// The iteration is a depth first as required by the specification.
-// https://dom.spec.whatwg.org/#htmlcollection
-// https://dom.spec.whatwg.org/#concept-tree-order
-pub const WalkerDepthFirst = struct {
-    pub fn get_next(_: WalkerDepthFirst, root: *parser.Node, cur: ?*parser.Node) !?*parser.Node {
-        var n = cur orelse root;
-
-        // TODO deinit next
-        if (try parser.nodeFirstChild(n)) |next| {
-            return next;
-        }
-
-        // TODO deinit next
-        if (try parser.nodeNextSibling(n)) |next| {
-            return next;
-        }
-
-        // TODO deinit parent
-        // Back to the parent of cur.
-        // If cur has no parent, then the iteration is over.
-        var parent = try parser.nodeParentNode(n) orelse return null;
-
-        // TODO deinit lastchild
-        var lastchild = try parser.nodeLastChild(parent);
-        while (n != root and n == lastchild) {
-            n = parent;
-
-            // TODO deinit parent
-            // Back to the prev's parent.
-            // If prev has no parent, then the loop must stop.
-            parent = try parser.nodeParentNode(n) orelse break;
-
-            // TODO deinit lastchild
-            lastchild = try parser.nodeLastChild(parent);
-        }
-
-        if (n == root) {
-            return null;
-        }
-
-        return try parser.nodeNextSibling(n);
-    }
-};
-
-// WalkerChildren iterates over the root's children only.
-pub const WalkerChildren = struct {
-    pub fn get_next(_: WalkerChildren, root: *parser.Node, cur: ?*parser.Node) !?*parser.Node {
-        // On walk start, we return the first root's child.
-        if (cur == null) return try parser.nodeFirstChild(root);
-
-        // If cur is root, then return null.
-        // This is a special case, if the root is included in the walk, we
-        // don't want to go further to find children.
-        if (root == cur.?) return null;
-
-        return try parser.nodeNextSibling(cur.?);
-    }
-};
-
-pub const WalkerNone = struct {
-    pub fn get_next(_: WalkerNone, _: *parser.Node, _: ?*parser.Node) !?*parser.Node {
-        return null;
-    }
-};

src/browser/dump.zig

@@ -1,4 +1,4 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
 //
 // Francis Bouvier <francis@lightpanda.io>
 // Pierre Tachoire <pierre@lightpanda.io>
@@ -17,218 +17,344 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 const std = @import("std");
+const Page = @import("Page.zig");
+const Node = @import("webapi/Node.zig");
+const Slot = @import("webapi/element/html/Slot.zig");
+const IFrame = @import("webapi/element/html/IFrame.zig");
 
-const parser = @import("netsurf.zig");
-const Walker = @import("dom/walker.zig").WalkerChildren;
+const IS_DEBUG = @import("builtin").mode == .Debug;
 
-// writer must be a std.io.Writer
-pub fn writeHTML(doc: *parser.Document, writer: anytype) !void {
-    try writer.writeAll("<!DOCTYPE html>\n");
-    try writeChildren(parser.documentToNode(doc), writer);
-    try writer.writeAll("\n");
+pub const Opts = struct {
+    with_base: bool = false,
+    with_frames: bool = false,
+    strip: Opts.Strip = .{},
+    shadow: Opts.Shadow = .rendered,
+
+    pub const Strip = struct {
+        js: bool = false,
+        ui: bool = false,
+        css: bool = false,
+    };
+
+    pub const Shadow = enum {
+        // Skip shadow DOM entirely (innerHTML/outerHTML)
+        skip,
+
+        // Dump everyhting (like "view source")
+        complete,
+
+        // Resolve slot elements (like what actually gets rendered)
+        rendered,
+    };
+};
+
+pub fn root(doc: *Node.Document, opts: Opts, writer: *std.Io.Writer, page: *Page) !void {
+    if (doc.is(Node.Document.HTMLDocument)) |html_doc| {
+        blk: {
+            // Ideally we just render the doctype which is part of the document
+            if (doc.asNode().firstChild()) |first| {
+                if (first._type == .document_type) {
+                    break :blk;
+                }
+            }
+            // But if the doc has no child, or the first child isn't a doctype
+            // well force it.
+            try writer.writeAll("<!DOCTYPE html>");
         }
 
-// Spec: https://www.w3.org/TR/xml/#sec-prolog-dtd
-pub fn writeDocType(doc_type: *parser.DocumentType, writer: anytype) !void {
-    try writer.writeAll("<!DOCTYPE ");
-    try writer.writeAll(try parser.documentTypeGetName(doc_type));
+        if (opts.with_base) {
+            const parent = if (html_doc.getHead()) |head| head.asNode() else doc.asNode();
+            const base = try doc.createElement("base", null, page);
+            try base.setAttributeSafe(comptime .wrap("base"), .wrap(page.base()), page);
+            _ = try parent.insertBefore(base.asNode(), parent.firstChild(), page);
+        }
+    }
 
-    const public_id = try parser.documentTypeGetPublicId(doc_type);
-    const system_id = try parser.documentTypeGetSystemId(doc_type);
+    return deep(doc.asNode(), opts, writer, page);
+}
+
+pub fn deep(node: *Node, opts: Opts, writer: *std.Io.Writer, page: *Page) error{WriteFailed}!void {
+    return _deep(node, opts, false, writer, page);
+}
+
+fn _deep(node: *Node, opts: Opts, comptime force_slot: bool, writer: *std.Io.Writer, page: *Page) error{WriteFailed}!void {
+    switch (node._type) {
+        .cdata => |cd| {
+            if (node.is(Node.CData.Comment)) |_| {
+                try writer.writeAll("<!--");
+                try writer.writeAll(cd.getData().str());
+                try writer.writeAll("-->");
+            } else if (node.is(Node.CData.ProcessingInstruction)) |pi| {
+                try writer.writeAll("<?");
+                try writer.writeAll(pi._target);
+                try writer.writeAll(" ");
+                try writer.writeAll(cd.getData().str());
+                try writer.writeAll("?>");
+            } else {
+                if (shouldEscapeText(node._parent)) {
+                    try writeEscapedText(cd.getData().str(), writer);
+                } else {
+                    try writer.writeAll(cd.getData().str());
+                }
+            }
+        },
+        .element => |el| {
+            if (shouldStripElement(el, opts)) {
+                return;
+            }
+
+            // When opts.shadow == .rendered, we normally skip any element with
+            // a slot attribute. Only the "active" element will get rendered into
+            // the <slot name="X">. However, the `deep` function is itself used
+            // to render that "active" content, so when we're trying to render
+            // it, we don't want to skip it.
+            if ((comptime force_slot == false) and opts.shadow == .rendered) {
+                if (el.getAttributeSafe(comptime .wrap("slot"))) |_| {
+                    // Skip - will be rendered by the Slot if it's the active container
+                    return;
+                }
+            }
+
+            try el.format(writer);
+
+            if (opts.shadow == .rendered) {
+                if (el.is(Slot)) |slot| {
+                    try dumpSlotContent(slot, opts, writer, page);
+                    return writer.writeAll("</slot>");
+                }
+            }
+            if (opts.shadow != .skip) {
+                if (page._element_shadow_roots.get(el)) |shadow| {
+                    try children(shadow.asNode(), opts, writer, page);
+                    // In rendered mode, light DOM is only shown through slots, not directly
+                    if (opts.shadow == .rendered) {
+                        // Skip rendering light DOM children
+                        if (!isVoidElement(el)) {
+                            try writer.writeAll("</");
+                            try writer.writeAll(el.getTagNameDump());
+                            try writer.writeByte('>');
+                        }
+                        return;
+                    }
+                }
+            }
+
+            if (opts.with_frames and el.is(IFrame) != null) {
+                const frame = el.as(IFrame);
+                if (frame.getContentDocument()) |doc| {
+                    // A frame's document should always ahave a page, but
+                    // I'm not willing to crash a release build on that assertion.
+                    if (comptime IS_DEBUG) {
+                        std.debug.assert(doc._page != null);
+                    }
+                    if (doc._page) |frame_page| {
+                        try writer.writeByte('\n');
+                        root(doc, opts, writer, frame_page) catch return error.WriteFailed;
+                        try writer.writeByte('\n');
+                    }
+                }
+            } else {
+                try children(node, opts, writer, page);
+            }
+
+            if (!isVoidElement(el)) {
+                try writer.writeAll("</");
+                try writer.writeAll(el.getTagNameDump());
+                try writer.writeByte('>');
+            }
+        },
+        .document => try children(node, opts, writer, page),
+        .document_type => |dt| {
+            try writer.writeAll("<!DOCTYPE ");
+            try writer.writeAll(dt.getName());
+
+            const public_id = dt.getPublicId();
+            const system_id = dt.getSystemId();
             if (public_id.len != 0 and system_id.len != 0) {
                 try writer.writeAll(" PUBLIC \"");
-        try writeEscapedAttributeValue(writer, public_id);
+                try writeEscapedText(public_id, writer);
                 try writer.writeAll("\" \"");
-        try writeEscapedAttributeValue(writer, system_id);
-        try writer.writeAll("\"");
+                try writeEscapedText(system_id, writer);
+                try writer.writeByte('"');
             } else if (public_id.len != 0) {
                 try writer.writeAll(" PUBLIC \"");
-        try writeEscapedAttributeValue(writer, public_id);
-        try writer.writeAll("\"");
+                try writeEscapedText(public_id, writer);
+                try writer.writeByte('"');
             } else if (system_id.len != 0) {
                 try writer.writeAll(" SYSTEM \"");
-        try writeEscapedAttributeValue(writer, system_id);
-        try writer.writeAll("\"");
+                try writeEscapedText(system_id, writer);
+                try writer.writeByte('"');
             }
-    // Internal subset is not implemented
-    try writer.writeAll(">");
-}
-
-pub fn writeNode(node: *parser.Node, writer: anytype) anyerror!void {
-    switch (try parser.nodeType(node)) {
-        .element => {
-            // open the tag
-            const tag = try parser.nodeLocalName(node);
-            try writer.writeAll("<");
-            try writer.writeAll(tag);
-
-            // write the attributes
-            const _map = try parser.nodeGetAttributes(node);
-            if (_map) |map| {
-                const ln = try parser.namedNodeMapGetLength(map);
-                for (0..ln) |i| {
-                    const attr = try parser.namedNodeMapItem(map, @intCast(i)) orelse break;
+            try writer.writeAll(">\n");
+        },
+        .document_fragment => try children(node, opts, writer, page),
+        .attribute => {
+            // Not called normally, but can be called via XMLSerializer.serializeToString
+            // in which case it should return an empty string
             try writer.writeAll("");
-                    try writer.writeAll(try parser.attributeGetName(attr));
-                    try writer.writeAll("=\"");
-                    const attribute_value = try parser.attributeGetValue(attr) orelse "";
-                    try writeEscapedAttributeValue(writer, attribute_value);
-                    try writer.writeAll("\"");
-                }
-            }
-
-            try writer.writeAll(">");
-
-            // void elements can't have any content.
-            if (try isVoid(parser.nodeToElement(node))) return;
-
-            // write the children
-            // TODO avoid recursion
-            try writeChildren(node, writer);
-
-            // close the tag
-            try writer.writeAll("</");
-            try writer.writeAll(tag);
-            try writer.writeAll(">");
         },
-        .text => {
-            const v = try parser.nodeValue(node) orelse return;
-            try writeEscapedTextNode(writer, v);
-        },
-        .cdata_section => {
-            const v = try parser.nodeValue(node) orelse return;
-            try writer.writeAll("<![CDATA[");
-            try writer.writeAll(v);
-            try writer.writeAll("]]>");
-        },
-        .comment => {
-            const v = try parser.nodeValue(node) orelse return;
-            try writer.writeAll("<!--");
-            try writer.writeAll(v);
-            try writer.writeAll("-->");
-        },
-        // TODO handle processing instruction dump
-        .processing_instruction => return,
-        // document fragment is outside of the main document DOM, so we
-        // don't output it.
-        .document_fragment => return,
-        // document will never be called, but required for completeness.
-        .document => return,
-        // done globally instead, but required for completeness. Only the outer DOCTYPE should be written
-        .document_type => return,
-        // deprecated
-        .attribute => return,
-        .entity_reference => return,
-        .entity => return,
-        .notation => return,
     }
 }
 
-// writer must be a std.io.Writer
-pub fn writeChildren(root: *parser.Node, writer: anytype) !void {
-    const walker = Walker{};
-    var next: ?*parser.Node = null;
-    while (true) {
-        next = try walker.get_next(root, next) orelse break;
-        try writeNode(next.?, writer);
+pub fn children(parent: *Node, opts: Opts, writer: *std.Io.Writer, page: *Page) !void {
+    var it = parent.childrenIterator();
+    while (it.next()) |child| {
+        try deep(child, opts, writer, page);
     }
 }
 
-// area, base, br, col, embed, hr, img, input, link, meta, source, track, wbr
-// https://html.spec.whatwg.org/#void-elements
-fn isVoid(elem: *parser.Element) !bool {
-    const tag = try parser.elementHTMLGetTagType(@as(*parser.ElementHTML, @ptrCast(elem)));
-    return switch (tag) {
-        .area, .base, .br, .col, .embed, .hr, .img, .input, .link => true,
-        .meta, .source, .track, .wbr => true,
+pub fn toJSON(node: *Node, writer: *std.json.Stringify) !void {
+    try writer.beginObject();
+
+    try writer.objectField("type");
+    switch (node.type) {
+        .cdata => {
+            try writer.write("cdata");
+        },
+        .document => {
+            try writer.write("document");
+        },
+        .document_type => {
+            try writer.write("document_type");
+        },
+        .element => |*el| {
+            try writer.write("element");
+            try writer.objectField("tag");
+            try writer.write(el.tagName());
+
+            try writer.objectField("attributes");
+            try writer.beginObject();
+            var it = el.attributeIterator();
+            while (it.next()) |attr| {
+                try writer.objectField(attr.name);
+                try writer.write(attr.value);
+            }
+            try writer.endObject();
+        },
+    }
+
+    try writer.objectField("children");
+    try writer.beginArray();
+    var it = node.childrenIterator();
+    while (it.next()) |child| {
+        try toJSON(child, writer);
+    }
+    try writer.endArray();
+    try writer.endObject();
+}
+
+fn dumpSlotContent(slot: *Slot, opts: Opts, writer: *std.Io.Writer, page: *Page) !void {
+    const assigned = slot.assignedNodes(null, page) catch return;
+
+    if (assigned.len > 0) {
+        for (assigned) |assigned_node| {
+            try _deep(assigned_node, opts, true, writer, page);
+        }
+    } else {
+        try children(slot.asNode(), opts, writer, page);
+    }
+}
+
+fn isVoidElement(el: *const Node.Element) bool {
+    return switch (el._type) {
+        .html => |html| switch (html._type) {
+            .br, .hr, .img, .input, .link, .meta => true,
             else => false,
+        },
+        .svg => false,
     };
 }
 
-fn writeEscapedTextNode(writer: anytype, value: []const u8) !void {
-    var v = value;
-    while (v.len > 0) {
-        const index = std.mem.indexOfAnyPos(u8, v, 0, &.{ '&', '<', '>' }) orelse {
-            return writer.writeAll(v);
+fn shouldStripElement(el: *const Node.Element, opts: Opts) bool {
+    const tag_name = el.getTagNameDump();
+
+    if (opts.strip.js) {
+        if (std.mem.eql(u8, tag_name, "script")) return true;
+        if (std.mem.eql(u8, tag_name, "noscript")) return true;
+
+        if (std.mem.eql(u8, tag_name, "link")) {
+            if (el.getAttributeSafe(comptime .wrap("as"))) |as| {
+                if (std.mem.eql(u8, as, "script")) return true;
+            }
+            if (el.getAttributeSafe(comptime .wrap("rel"))) |rel| {
+                if (std.mem.eql(u8, rel, "modulepreload") or std.mem.eql(u8, rel, "preload")) {
+                    if (el.getAttributeSafe(comptime .wrap("as"))) |as| {
+                        if (std.mem.eql(u8, as, "script")) return true;
+                    }
+                }
+            }
+        }
+    }
+
+    if (opts.strip.css or opts.strip.ui) {
+        if (std.mem.eql(u8, tag_name, "style")) return true;
+
+        if (std.mem.eql(u8, tag_name, "link")) {
+            if (el.getAttributeSafe(comptime .wrap("rel"))) |rel| {
+                if (std.mem.eql(u8, rel, "stylesheet")) return true;
+            }
+        }
+    }
+
+    if (opts.strip.ui) {
+        if (std.mem.eql(u8, tag_name, "img")) return true;
+        if (std.mem.eql(u8, tag_name, "picture")) return true;
+        if (std.mem.eql(u8, tag_name, "video")) return true;
+        if (std.mem.eql(u8, tag_name, "audio")) return true;
+        if (std.mem.eql(u8, tag_name, "svg")) return true;
+        if (std.mem.eql(u8, tag_name, "canvas")) return true;
+        if (std.mem.eql(u8, tag_name, "iframe")) return true;
+    }
+
+    return false;
+}
+
+fn shouldEscapeText(node_: ?*Node) bool {
+    const node = node_ orelse return true;
+    if (node.is(Node.Element.Html.Script) != null) {
+        return false;
+    }
+    // When scripting is enabled, <noscript> is a raw text element per the HTML spec
+    // (https://html.spec.whatwg.org/multipage/parsing.html#serialising-html-fragments).
+    // Its text content must not be HTML-escaped during serialization.
+    if (node.is(Node.Element.Html.Generic)) |generic| {
+        if (generic._tag == .noscript) return false;
+    }
+    return true;
+}
+fn writeEscapedText(text: []const u8, writer: *std.Io.Writer) !void {
+    // Fast path: if no special characters, write directly
+    const first_special = std.mem.indexOfAnyPos(u8, text, 0, &.{ '&', '<', '>', 194 }) orelse {
+        return writer.writeAll(text);
     };
-        try writer.writeAll(v[0..index]);
-        switch (v[index]) {
+
+    try writer.writeAll(text[0..first_special]);
+    var remaining = try writeEscapedByte(text, first_special, writer);
+
+    while (std.mem.indexOfAnyPos(u8, remaining, 0, &.{ '&', '<', '>', 194 })) |offset| {
+        try writer.writeAll(remaining[0..offset]);
+        remaining = try writeEscapedByte(remaining, offset, writer);
+    }
+
+    if (remaining.len > 0) {
+        try writer.writeAll(remaining);
+    }
+}
+
+fn writeEscapedByte(input: []const u8, index: usize, writer: *std.Io.Writer) ![]const u8 {
+    switch (input[index]) {
         '&' => try writer.writeAll("&amp;"),
         '<' => try writer.writeAll("&lt;"),
         '>' => try writer.writeAll("&gt;"),
+        194 => {
+            // non breaking space
+            if (input.len > index + 1 and input[index + 1] == 160) {
+                try writer.writeAll("&nbsp;");
+                return input[index + 2 ..];
+            }
+            try writer.writeByte(194);
+        },
         else => unreachable,
     }
-        v = v[index + 1 ..];
-    }
-}
-
-fn writeEscapedAttributeValue(writer: anytype, value: []const u8) !void {
-    var v = value;
-    while (v.len > 0) {
-        const index = std.mem.indexOfAnyPos(u8, v, 0, &.{ '&', '<', '>', '"' }) orelse {
-            return writer.writeAll(v);
-        };
-        try writer.writeAll(v[0..index]);
-        switch (v[index]) {
-            '&' => try writer.writeAll("&amp;"),
-            '<' => try writer.writeAll("&lt;"),
-            '>' => try writer.writeAll("&gt;"),
-            '"' => try writer.writeAll("&quot;"),
-            else => unreachable,
-        }
-        v = v[index + 1 ..];
-    }
-}
-
-const testing = std.testing;
-test "dump.writeHTML" {
-    try parser.init();
-    defer parser.deinit();
-
-    try testWriteHTML(
-        "<div id=\"content\">Over 9000!</div>",
-        "<div id=\"content\">Over 9000!</div>",
-    );
-
-    try testWriteHTML(
-        "<root><!-- a comment --></root>",
-        "<root><!-- a comment --></root>",
-    );
-
-    try testWriteHTML(
-        "<p>&lt; &gt; &amp;</p>",
-        "<p>&lt; &gt; &amp;</p>",
-    );
-
-    try testWriteHTML(
-        "<p id=\"&quot;&gt;&lt;&amp;&quot;''\">wat?</p>",
-        "<p id='\">&lt;&amp;&quot;&#39;&apos;'>wat?</p>",
-    );
-
-    try testWriteFullHTML(
-        \\<!DOCTYPE html>
-        \\<html><head><title>It's over what?</title><meta name="a" value="b">
-        \\</head><body>9000</body></html>
-        \\
-    , "<html><title>It's over what?</title><meta name=a value=\"b\">\n<body>9000");
-}
-
-fn testWriteHTML(comptime expected_body: []const u8, src: []const u8) !void {
-    const expected =
-        "<!DOCTYPE html>\n<html><head></head><body>" ++
-        expected_body ++
-        "</body></html>\n";
-    return testWriteFullHTML(expected, src);
-}
-
-fn testWriteFullHTML(comptime expected: []const u8, src: []const u8) !void {
-    var buf = std.ArrayListUnmanaged(u8){};
-    defer buf.deinit(testing.allocator);
-
-    const doc_html = try parser.documentHTMLParseFromStr(src);
-    defer parser.documentHTMLClose(doc_html) catch {};
-
-    const doc = parser.documentHTMLToDocument(doc_html);
-    try writeHTML(doc, buf.writer(testing.allocator));
-    try testing.expectEqualStrings(expected, buf.items);
+    return input[index + 1 ..];
 }

src/browser/encoding/text_encoder.zig

@@ -1,64 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const Env = @import("../env.zig").Env;
-
-pub const Interfaces = .{
-    TextEncoder,
-};
-
-// https://encoding.spec.whatwg.org/#interface-textencoder
-pub const TextEncoder = struct {
-    pub fn constructor() !TextEncoder {
-        return .{};
-    }
-
-    pub fn get_encoding(_: *const TextEncoder) []const u8 {
-        return "utf-8";
-    }
-
-    pub fn _encode(_: *const TextEncoder, v: []const u8) !Env.TypedArray(u8) {
-        // Ensure the input is a valid utf-8
-        // It seems chrome accepts invalid utf-8 sequence.
-        //
-        if (!std.unicode.utf8ValidateSlice(v)) {
-            return error.InvalidUtf8;
-        }
-
-        return .{ .values = v };
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.Encoding.TextEncoder" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "var encoder = new TextEncoder();", "undefined" },
-        .{ "encoder.encoding;", "utf-8" },
-        .{ "encoder.encode('€');", "226,130,172" },
-
-        // Invalid utf-8 sequence.
-        // Result with chrome:
-        // .{ "encoder.encode(new Uint8Array([0xE2,0x28,0xA1]))", "50,50,54,44,52,48,44,49,54,49" },
-        .{ "try {encoder.encode(new Uint8Array([0xE2,0x28,0xA1])) } catch (e) { e };", "Error: InvalidUtf8" },
-    }, .{});
-}

src/browser/env.zig

@@ -1,44 +0,0 @@
-const std = @import("std");
-
-const Page = @import("page.zig").Page;
-const js = @import("../runtime/js.zig");
-const generate = @import("../runtime/generate.zig");
-
-const WebApis = struct {
-    // Wrapped like this for debug ergonomics.
-    // When we create our Env, a few lines down, we define it as:
-    //   pub const Env = js.Env(*Page, WebApis);
-    //
-    // If there's a compile time error witht he Env, it's type will be readable,
-    // i.e.: runtime.js.Env(*browser.env.Page, browser.env.WebApis)
-    //
-    // But if we didn't wrap it in the struct, like we once didn't, and defined
-    // env as:
-    //   pub const Env = js.Env(*Page, Interfaces);
-    //
-    // Because Interfaces is an anynoumous type, it doesn't have a friendly name
-    // and errors would be something like:
-    //   runtime.js.Env(*browser.Page, .{...A HUNDRED TYPES...})
-    pub const Interfaces = generate.Tuple(.{
-        @import("crypto/crypto.zig").Crypto,
-        @import("console/console.zig").Console,
-        @import("cssom/css_style_declaration.zig").Interfaces,
-        @import("dom/dom.zig").Interfaces,
-        @import("encoding/text_encoder.zig").Interfaces,
-        @import("events/event.zig").Interfaces,
-        @import("html/html.zig").Interfaces,
-        @import("iterator/iterator.zig").Interfaces,
-        @import("storage/storage.zig").Interfaces,
-        @import("url/url.zig").Interfaces,
-        @import("xhr/xhr.zig").Interfaces,
-        @import("xhr/form_data.zig").Interfaces,
-        @import("xmlserializer/xmlserializer.zig").Interfaces,
-        @import("webcomponents/webcomponents.zig").Interfaces,
-    });
-};
-
-pub const JsThis = Env.JsThis;
-pub const JsObject = Env.JsObject;
-pub const Function = Env.Function;
-pub const Env = js.Env(*Page, WebApis);
-pub const Global = @import("html/window.zig").Window;

src/browser/events/custom_event.zig

@@ -1,80 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-const Event = @import("event.zig").Event;
-const JsObject = @import("../env.zig").JsObject;
-
-// https://dom.spec.whatwg.org/#interface-customevent
-pub const CustomEvent = struct {
-    pub const prototype = *Event;
-    pub const union_make_copy = true;
-
-    proto: parser.Event,
-    detail: ?JsObject,
-
-    const CustomEventInit = struct {
-        bubbles: bool = false,
-        cancelable: bool = false,
-        composed: bool = false,
-        detail: ?JsObject = null,
-    };
-
-    pub fn constructor(event_type: []const u8, opts_: ?CustomEventInit) !CustomEvent {
-        const opts = opts_ orelse CustomEventInit{};
-
-        const event = try parser.eventCreate();
-        defer parser.eventDestroy(event);
-        try parser.eventInit(event, event_type, .{
-            .bubbles = opts.bubbles,
-            .cancelable = opts.cancelable,
-            .composed = opts.composed,
-        });
-
-        return .{
-            .proto = event.*,
-            .detail = if (opts.detail) |d| try d.persist() else null,
-        };
-    }
-
-    pub fn get_detail(self: *CustomEvent) ?JsObject {
-        return self.detail;
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.CustomEvent" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let capture = null", "undefined" },
-        .{ "const el = document.createElement('div');", "undefined" },
-        .{ "el.addEventListener('c1', (e) => { capture = 'c1-' + new String(e.detail)})", "undefined" },
-        .{ "el.addEventListener('c2', (e) => { capture = 'c2-' + new String(e.detail.over)})", "undefined" },
-
-        .{ "el.dispatchEvent(new CustomEvent('c1'));", "true" },
-        .{ "capture", "c1-null" },
-
-        .{ "el.dispatchEvent(new CustomEvent('c1', {detail: '123'}));", "true" },
-        .{ "capture", "c1-123" },
-
-        .{ "el.dispatchEvent(new CustomEvent('c2', {detail: {over: 9000}}));", "true" },
-        .{ "capture", "c2-9000" },
-    }, .{});
-}

src/browser/events/event.zig

@@ -1,374 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const generate = @import("../../runtime/generate.zig");
-
-const Page = @import("../page.zig").Page;
-const DOMException = @import("../dom/exceptions.zig").DOMException;
-const EventTarget = @import("../dom/event_target.zig").EventTarget;
-const EventTargetUnion = @import("../dom/event_target.zig").Union;
-
-const CustomEvent = @import("custom_event.zig").CustomEvent;
-const ProgressEvent = @import("../xhr/progress_event.zig").ProgressEvent;
-const MouseEvent = @import("mouse_event.zig").MouseEvent;
-
-// Event interfaces
-pub const Interfaces = .{
-    Event,
-    CustomEvent,
-    ProgressEvent,
-    MouseEvent,
-};
-
-pub const Union = generate.Union(Interfaces);
-
-// https://dom.spec.whatwg.org/#event
-pub const Event = struct {
-    pub const Self = parser.Event;
-    pub const Exception = DOMException;
-
-    pub const EventInit = parser.EventInit;
-
-    // JS
-    // --
-
-    pub const _CAPTURING_PHASE = 1;
-    pub const _AT_TARGET = 2;
-    pub const _BUBBLING_PHASE = 3;
-
-    pub fn toInterface(evt: *parser.Event) !Union {
-        return switch (try parser.eventGetInternalType(evt)) {
-            .event => .{ .Event = evt },
-            .custom_event => .{ .CustomEvent = @as(*CustomEvent, @ptrCast(evt)).* },
-            .progress_event => .{ .ProgressEvent = @as(*ProgressEvent, @ptrCast(evt)).* },
-            .mouse_event => .{ .MouseEvent = @as(*parser.MouseEvent, @ptrCast(evt)) },
-        };
-    }
-
-    pub fn constructor(event_type: []const u8, opts: ?EventInit) !*parser.Event {
-        const event = try parser.eventCreate();
-        try parser.eventInit(event, event_type, opts orelse EventInit{});
-        return event;
-    }
-
-    // Getters
-
-    pub fn get_type(self: *parser.Event) ![]const u8 {
-        return try parser.eventType(self);
-    }
-
-    pub fn get_target(self: *parser.Event, page: *Page) !?EventTargetUnion {
-        const et = try parser.eventTarget(self);
-        if (et == null) return null;
-        return try EventTarget.toInterface(et.?, page);
-    }
-
-    pub fn get_currentTarget(self: *parser.Event, page: *Page) !?EventTargetUnion {
-        const et = try parser.eventCurrentTarget(self);
-        if (et == null) return null;
-        return try EventTarget.toInterface(et.?, page);
-    }
-
-    pub fn get_eventPhase(self: *parser.Event) !u8 {
-        return try parser.eventPhase(self);
-    }
-
-    pub fn get_bubbles(self: *parser.Event) !bool {
-        return try parser.eventBubbles(self);
-    }
-
-    pub fn get_cancelable(self: *parser.Event) !bool {
-        return try parser.eventCancelable(self);
-    }
-
-    pub fn get_defaultPrevented(self: *parser.Event) !bool {
-        return try parser.eventDefaultPrevented(self);
-    }
-
-    pub fn get_isTrusted(self: *parser.Event) !bool {
-        return try parser.eventIsTrusted(self);
-    }
-
-    pub fn get_timestamp(self: *parser.Event) !u32 {
-        return try parser.eventTimestamp(self);
-    }
-
-    // Methods
-
-    pub fn _initEvent(
-        self: *parser.Event,
-        eventType: []const u8,
-        bubbles: ?bool,
-        cancelable: ?bool,
-    ) !void {
-        const opts = EventInit{
-            .bubbles = bubbles orelse false,
-            .cancelable = cancelable orelse false,
-        };
-        return try parser.eventInit(self, eventType, opts);
-    }
-
-    pub fn _stopPropagation(self: *parser.Event) !void {
-        return try parser.eventStopPropagation(self);
-    }
-
-    pub fn _stopImmediatePropagation(self: *parser.Event) !void {
-        return try parser.eventStopImmediatePropagation(self);
-    }
-
-    pub fn _preventDefault(self: *parser.Event) !void {
-        return try parser.eventPreventDefault(self);
-    }
-};
-
-pub const EventHandler = struct {
-    once: bool,
-    capture: bool,
-    callback: Function,
-    node: parser.EventNode,
-    listener: *parser.EventListener,
-
-    const Env = @import("../env.zig").Env;
-    const Function = Env.Function;
-
-    pub const Listener = union(enum) {
-        function: Function,
-        object: Env.JsObject,
-
-        pub fn callback(self: Listener, target: *parser.EventTarget) !?Function {
-            return switch (self) {
-                .function => |func| try func.withThis(target),
-                .object => |obj| blk: {
-                    const func = (try obj.getFunction("handleEvent")) orelse return null;
-                    break :blk try func.withThis(try obj.persist());
-                },
-            };
-        }
-    };
-
-    pub const Opts = union(enum) {
-        flags: Flags,
-        capture: bool,
-
-        const Flags = struct {
-            once: ?bool,
-            capture: ?bool,
-            // We ignore this property. It seems to be largely used to help the
-            // browser make certain performance tweaks (i.e. the browser knows
-            // that the listener won't call preventDefault() and thus can safely
-            // run the default as needed).
-            passive: ?bool,
-            signal: ?bool, // currently does nothing
-        };
-    };
-
-    pub fn register(
-        allocator: Allocator,
-        target: *parser.EventTarget,
-        typ: []const u8,
-        listener: Listener,
-        opts_: ?Opts,
-    ) !?*EventHandler {
-        var once = false;
-        var capture = false;
-        if (opts_) |opts| {
-            switch (opts) {
-                .capture => |c| capture = c,
-                .flags => |f| {
-                    // Done this way so that, for common cases that _only_ set
-                    // capture, i.e. {captrue: true}, it works.
-                    // But for any case that sets any of the other flags, we
-                    // error. If we don't error, this function call would succeed
-                    // but the behavior might be wrong. At this point, it's
-                    // better to be explicit and error.
-                    if (f.signal orelse false) return error.NotImplemented;
-                    once = f.once orelse false;
-                    capture = f.capture orelse false;
-                },
-            }
-        }
-
-        const callback = (try listener.callback(target)) orelse return null;
-
-        // check if event target has already this listener
-        if (try parser.eventTargetHasListener(target, typ, capture, callback.id) != null) {
-            return null;
-        }
-
-        const eh = try allocator.create(EventHandler);
-        eh.* = .{
-            .once = once,
-            .capture = capture,
-            .callback = callback,
-            .node = .{
-                .id = callback.id,
-                .func = handle,
-            },
-            .listener = undefined,
-        };
-
-        eh.listener = try parser.eventTargetAddEventListener(
-            target,
-            typ,
-            &eh.node,
-            capture,
-        );
-        return eh;
-    }
-
-    fn handle(node: *parser.EventNode, event: *parser.Event) void {
-        const ievent = Event.toInterface(event) catch |err| {
-            log.err(.app, "toInterface error", .{ .err = err });
-            return;
-        };
-
-        const self: *EventHandler = @fieldParentPtr("node", node);
-        var result: Function.Result = undefined;
-        self.callback.tryCall(void, .{ievent}, &result) catch {
-            log.debug(.user_script, "callback error", .{
-                .err = result.exception,
-                .stack = result.stack,
-                .source = "event handler",
-            });
-        };
-
-        if (self.once) {
-            const target = (parser.eventTarget(event) catch return).?;
-            const typ = parser.eventType(event) catch return;
-            parser.eventTargetRemoveEventListener(
-                target,
-                typ,
-                self.listener,
-                self.capture,
-            ) catch {};
-        }
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.Event" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "let content = document.getElementById('content')", "undefined" },
-        .{ "let para = document.getElementById('para')", "undefined" },
-        .{ "var nb = 0; var evt", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{
-            \\ content.addEventListener('target', function(e) {
-            \\  evt = e; nb = nb + 1;
-            \\  e.preventDefault();
-            \\ })
-            ,
-            "undefined",
-        },
-        .{ "content.dispatchEvent(new Event('target', {bubbles: true, cancelable: true}))", "false" },
-        .{ "nb", "1" },
-        .{ "evt.target === content", "true" },
-        .{ "evt.bubbles", "true" },
-        .{ "evt.cancelable", "true" },
-        .{ "evt.defaultPrevented", "true" },
-        .{ "evt.isTrusted", "true" },
-        .{ "evt.timestamp > 1704063600", "true" }, // 2024/01/01 00:00
-        // event.type, event.currentTarget, event.phase checked in EventTarget
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0", "0" },
-        .{
-            \\ content.addEventListener('stop',function(e) {
-            \\    e.stopPropagation();
-            \\    nb = nb + 1;
-            \\  }, true)
-            ,
-            "undefined",
-        },
-        // the following event listener will not be invoked
-        .{
-            \\  para.addEventListener('stop',function(e) {
-            \\    nb = nb + 1;
-            \\  })
-            ,
-            "undefined",
-        },
-        .{ "para.dispatchEvent(new Event('stop'))", "true" },
-        .{ "nb", "1" }, // will be 2 if event was not stopped at content event listener
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0", "0" },
-        .{
-            \\  content.addEventListener('immediate', function(e) {
-            \\    e.stopImmediatePropagation();
-            \\    nb = nb + 1;
-            \\  })
-            ,
-            "undefined",
-        },
-        // the following event listener will not be invoked
-        .{
-            \\  content.addEventListener('immediate', function(e) {
-            \\    nb = nb + 1;
-            \\  })
-            ,
-            "undefined",
-        },
-        .{ "content.dispatchEvent(new Event('immediate'))", "true" },
-        .{ "nb", "1" }, // will be 2 if event was not stopped at first content event listener
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0", "0" },
-        .{
-            \\  content.addEventListener('legacy', function(e) {
-            \\     evt = e; nb = nb + 1;
-            \\  })
-            ,
-            "undefined",
-        },
-        .{ "let evtLegacy = document.createEvent('Event')", "undefined" },
-        .{ "evtLegacy.initEvent('legacy')", "undefined" },
-        .{ "content.dispatchEvent(evtLegacy)", "true" },
-        .{ "nb", "1" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "var nb = 0; var evt = null; function cbk(event) { nb ++; evt=event; }", "undefined" },
-        .{ "document.addEventListener('count', cbk)", "undefined" },
-        .{ "document.removeEventListener('count', cbk)", "undefined" },
-        .{ "document.dispatchEvent(new Event('count'))", "true" },
-        .{ "nb", "0" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "nb = 0; function cbk(event) { nb ++; }", null },
-        .{ "document.addEventListener('count', cbk, {once: true})", null },
-        .{ "document.dispatchEvent(new Event('count'))", "true" },
-        .{ "document.dispatchEvent(new Event('count'))", "true" },
-        .{ "document.dispatchEvent(new Event('count'))", "true" },
-        .{ "nb", "1" },
-    }, .{});
-}

src/browser/events/mouse_event.zig

@@ -1,140 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-const log = std.log.scoped(.mouse_event);
-
-const parser = @import("../netsurf.zig");
-const Event = @import("event.zig").Event;
-const JsObject = @import("../env.zig").JsObject;
-
-// TODO: We currently don't have a UIEvent interface so we skip it in the prototype chain.
-// https://developer.mozilla.org/en-US/docs/Web/API/UIEvent
-const UIEvent = Event;
-
-// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent
-pub const MouseEvent = struct {
-    pub const Self = parser.MouseEvent;
-    pub const prototype = *UIEvent;
-
-    const MouseButton = enum(u16) {
-        main_button = 0,
-        auxillary_button = 1,
-        secondary_button = 2,
-        fourth_button = 3,
-        fifth_button = 4,
-    };
-
-    const MouseEventInit = struct {
-        screenX: i32 = 0,
-        screenY: i32 = 0,
-        clientX: i32 = 0,
-        clientY: i32 = 0,
-        ctrlKey: bool = false,
-        shiftKey: bool = false,
-        altKey: bool = false,
-        metaKey: bool = false,
-        button: MouseButton = .main_button,
-    };
-
-    pub fn constructor(event_type: []const u8, opts_: ?MouseEventInit) !*parser.MouseEvent {
-        const opts = opts_ orelse MouseEventInit{};
-
-        var mouse_event = try parser.mouseEventCreate();
-        try parser.eventSetInternalType(@ptrCast(&mouse_event), .mouse_event);
-
-        try parser.mouseEventInit(mouse_event, event_type, .{
-            .x = opts.clientX,
-            .y = opts.clientY,
-            .ctrl = opts.ctrlKey,
-            .shift = opts.shiftKey,
-            .alt = opts.altKey,
-            .meta = opts.metaKey,
-            .button = @intFromEnum(opts.button),
-        });
-
-        if (!std.mem.eql(u8, event_type, "click")) {
-            log.warn("MouseEvent currently only supports listeners for 'click' events!", .{});
-        }
-
-        return mouse_event;
-    }
-
-    pub fn get_button(self: *parser.MouseEvent) u16 {
-        return self.button;
-    }
-
-    // These is just an alias for clientX.
-    pub fn get_x(self: *parser.MouseEvent) i32 {
-        return self.cx;
-    }
-
-    // These is just an alias for clientY.
-    pub fn get_y(self: *parser.MouseEvent) i32 {
-        return self.cy;
-    }
-
-    pub fn get_clientX(self: *parser.MouseEvent) i32 {
-        return self.cx;
-    }
-
-    pub fn get_clientY(self: *parser.MouseEvent) i32 {
-        return self.cy;
-    }
-
-    pub fn get_screenX(self: *parser.MouseEvent) i32 {
-        return self.sx;
-    }
-
-    pub fn get_screenY(self: *parser.MouseEvent) i32 {
-        return self.sy;
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.MouseEvent" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        // Default MouseEvent
-        .{ "let event = new MouseEvent('click')", "undefined" },
-        .{ "event.type", "click" },
-        .{ "event instanceof MouseEvent", "true" },
-        .{ "event instanceof Event", "true" },
-        .{ "event.clientX", "0" },
-        .{ "event.clientY", "0" },
-        .{ "event.screenX", "0" },
-        .{ "event.screenY", "0" },
-        // MouseEvent with parameters
-        .{ "let new_event = new MouseEvent('click', { 'button': 0, 'clientX': 10, 'clientY': 20 })", "undefined" },
-        .{ "new_event.button", "0" },
-        .{ "new_event.x", "10" },
-        .{ "new_event.y", "20" },
-        .{ "new_event.screenX", "10" },
-        .{ "new_event.screenY", "20" },
-        // MouseEvent Listener
-        .{ "let me = new MouseEvent('click')", "undefined" },
-        .{ "me instanceof Event", "true" },
-        .{ "var eevt = null; function ccbk(event) { eevt = event; }", "undefined" },
-        .{ "document.addEventListener('click', ccbk)", "undefined" },
-        .{ "document.dispatchEvent(me)", "true" },
-        .{ "eevt.type", "click" },
-        .{ "eevt instanceof MouseEvent", "true" },
-    }, .{});
-}

src/browser/html/document.zig

@@ -1,396 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const Page = @import("../page.zig").Page;
-
-const Window = @import("window.zig").Window;
-const Element = @import("../dom/element.zig").Element;
-const ElementUnion = @import("../dom/element.zig").Union;
-const Document = @import("../dom/document.zig").Document;
-const NodeList = @import("../dom/nodelist.zig").NodeList;
-const Location = @import("location.zig").Location;
-
-const collection = @import("../dom/html_collection.zig");
-const Walker = @import("../dom/walker.zig").WalkerDepthFirst;
-const Cookie = @import("../storage/cookie.zig").Cookie;
-
-// WEB IDL https://html.spec.whatwg.org/#the-document-object
-pub const HTMLDocument = struct {
-    pub const Self = parser.DocumentHTML;
-    pub const prototype = *Document;
-    pub const subtype = .node;
-
-    // JS funcs
-    // --------
-
-    pub fn get_domain(self: *parser.DocumentHTML) ![]const u8 {
-        return try parser.documentHTMLGetDomain(self);
-    }
-
-    pub fn set_domain(_: *parser.DocumentHTML, _: []const u8) ![]const u8 {
-        return error.NotImplemented;
-    }
-
-    pub fn get_referrer(self: *parser.DocumentHTML) ![]const u8 {
-        return try parser.documentHTMLGetReferrer(self);
-    }
-
-    pub fn set_referrer(_: *parser.DocumentHTML, _: []const u8) ![]const u8 {
-        return error.NotImplemented;
-    }
-
-    pub fn get_body(self: *parser.DocumentHTML) !?*parser.Body {
-        return try parser.documentHTMLBody(self);
-    }
-
-    pub fn set_body(self: *parser.DocumentHTML, elt: ?*parser.ElementHTML) !?*parser.Body {
-        try parser.documentHTMLSetBody(self, elt);
-        return try get_body(self);
-    }
-
-    pub fn get_head(self: *parser.DocumentHTML) !?*parser.Head {
-        const root = parser.documentHTMLToNode(self);
-        const walker = Walker{};
-        var next: ?*parser.Node = null;
-        while (true) {
-            next = try walker.get_next(root, next) orelse return null;
-            if (std.ascii.eqlIgnoreCase("head", try parser.nodeName(next.?))) {
-                return @as(*parser.Head, @ptrCast(next.?));
-            }
-        }
-    }
-
-    pub fn get_cookie(_: *parser.DocumentHTML, page: *Page) ![]const u8 {
-        var buf: std.ArrayListUnmanaged(u8) = .{};
-        try page.cookie_jar.forRequest(&page.url.uri, buf.writer(page.arena), .{ .navigation = true });
-        return buf.items;
-    }
-
-    pub fn set_cookie(_: *parser.DocumentHTML, cookie_str: []const u8, page: *Page) ![]const u8 {
-        // we use the cookie jar's allocator to parse the cookie because it
-        // outlives the page's arena.
-        const c = try Cookie.parse(page.cookie_jar.allocator, &page.url.uri, cookie_str);
-        errdefer c.deinit();
-        try page.cookie_jar.add(c, std.time.timestamp());
-        return cookie_str;
-    }
-
-    pub fn get_title(self: *parser.DocumentHTML) ![]const u8 {
-        return try parser.documentHTMLGetTitle(self);
-    }
-
-    pub fn set_title(self: *parser.DocumentHTML, v: []const u8) ![]const u8 {
-        try parser.documentHTMLSetTitle(self, v);
-        return v;
-    }
-
-    pub fn _getElementsByName(self: *parser.DocumentHTML, name: []const u8, page: *Page) !NodeList {
-        const arena = page.arena;
-        var list: NodeList = .{};
-
-        if (name.len == 0) return list;
-
-        const root = parser.documentHTMLToNode(self);
-        var c = try collection.HTMLCollectionByName(arena, root, name, false);
-
-        const ln = try c.get_length();
-        var i: u32 = 0;
-        while (i < ln) {
-            const n = try c.item(i) orelse break;
-            try list.append(arena, n);
-            i += 1;
-        }
-
-        return list;
-    }
-
-    pub fn get_images(self: *parser.DocumentHTML, page: *Page) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByTagName(page.arena, parser.documentHTMLToNode(self), "img", false);
-    }
-
-    pub fn get_embeds(self: *parser.DocumentHTML, page: *Page) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByTagName(page.arena, parser.documentHTMLToNode(self), "embed", false);
-    }
-
-    pub fn get_plugins(self: *parser.DocumentHTML, page: *Page) !collection.HTMLCollection {
-        return get_embeds(self, page);
-    }
-
-    pub fn get_forms(self: *parser.DocumentHTML, page: *Page) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByTagName(page.arena, parser.documentHTMLToNode(self), "form", false);
-    }
-
-    pub fn get_scripts(self: *parser.DocumentHTML, page: *Page) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByTagName(page.arena, parser.documentHTMLToNode(self), "script", false);
-    }
-
-    pub fn get_applets(_: *parser.DocumentHTML) !collection.HTMLCollection {
-        return try collection.HTMLCollectionEmpty();
-    }
-
-    pub fn get_links(self: *parser.DocumentHTML) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByLinks(parser.documentHTMLToNode(self), false);
-    }
-
-    pub fn get_anchors(self: *parser.DocumentHTML) !collection.HTMLCollection {
-        return try collection.HTMLCollectionByAnchors(parser.documentHTMLToNode(self), false);
-    }
-
-    pub fn get_all(self: *parser.DocumentHTML) collection.HTMLAllCollection {
-        return collection.HTMLAllCollection.init(parser.documentHTMLToNode(self));
-    }
-
-    pub fn get_currentScript(self: *parser.DocumentHTML) !?*parser.Script {
-        return try parser.documentHTMLGetCurrentScript(self);
-    }
-
-    pub fn get_location(self: *parser.DocumentHTML) !?*Location {
-        return try parser.documentHTMLGetLocation(Location, self);
-    }
-
-    pub fn set_location(_: *const parser.DocumentHTML, url: []const u8, page: *Page) !void {
-        return page.navigateFromWebAPI(url, .{ .reason = .script });
-    }
-
-    pub fn get_designMode(_: *parser.DocumentHTML) []const u8 {
-        return "off";
-    }
-
-    pub fn set_designMode(_: *parser.DocumentHTML, _: []const u8) []const u8 {
-        return "off";
-    }
-
-    pub fn get_defaultView(_: *parser.DocumentHTML, page: *Page) *Window {
-        return &page.window;
-    }
-
-    pub fn get_readyState(self: *parser.DocumentHTML, page: *Page) ![]const u8 {
-        const state = try page.getOrCreateNodeState(@alignCast(@ptrCast(self)));
-        return @tagName(state.ready_state);
-    }
-
-    // noop legacy functions
-    // https://html.spec.whatwg.org/#Document-partial
-    pub fn _clear(_: *parser.DocumentHTML) void {}
-    pub fn _captureEvents(_: *parser.DocumentHTML) void {}
-    pub fn _releaseEvents(_: *parser.DocumentHTML) void {}
-
-    pub fn get_fgColor(_: *parser.DocumentHTML) []const u8 {
-        return "";
-    }
-    pub fn set_fgColor(_: *parser.DocumentHTML, _: []const u8) []const u8 {
-        return "";
-    }
-    pub fn get_linkColor(_: *parser.DocumentHTML) []const u8 {
-        return "";
-    }
-    pub fn set_linkColor(_: *parser.DocumentHTML, _: []const u8) []const u8 {
-        return "";
-    }
-    pub fn get_vlinkColor(_: *parser.DocumentHTML) []const u8 {
-        return "";
-    }
-    pub fn set_vlinkColor(_: *parser.DocumentHTML, _: []const u8) []const u8 {
-        return "";
-    }
-    pub fn get_alinkColor(_: *parser.DocumentHTML) []const u8 {
-        return "";
-    }
-    pub fn set_alinkColor(_: *parser.DocumentHTML, _: []const u8) []const u8 {
-        return "";
-    }
-    pub fn get_bgColor(_: *parser.DocumentHTML) []const u8 {
-        return "";
-    }
-    pub fn set_bgColor(_: *parser.DocumentHTML, _: []const u8) []const u8 {
-        return "";
-    }
-
-    // Returns the topmost Element at the specified coordinates (relative to the viewport).
-    // Since LightPanda requires the client to know what they are clicking on we do not return the underlying element at this moment
-    // This can currenty only happen if the first pixel is clicked without having rendered any element. This will change when css properties are supported.
-    // This returns an ElementUnion instead of a *Parser.Element in case the element somehow hasn't passed through the js runtime yet.
-    pub fn _elementFromPoint(_: *parser.DocumentHTML, x: f32, y: f32, page: *Page) !?ElementUnion {
-        const ix: i32 = @intFromFloat(@floor(x));
-        const iy: i32 = @intFromFloat(@floor(y));
-        const element = page.renderer.getElementAtPosition(ix, iy) orelse return null;
-        // TODO if pointer-events set to none the underlying element should be returned (parser.documentGetDocumentElement(self.document);?)
-        return try Element.toInterface(element);
-    }
-
-    // Returns an array of all elements at the specified coordinates (relative to the viewport). The elements are ordered from the topmost to the bottommost box of the viewport.
-    pub fn _elementsFromPoint(_: *parser.DocumentHTML, x: f32, y: f32, page: *Page) ![]ElementUnion {
-        const ix: i32 = @intFromFloat(@floor(x));
-        const iy: i32 = @intFromFloat(@floor(y));
-        const element = page.renderer.getElementAtPosition(ix, iy) orelse return &.{};
-        // TODO if pointer-events set to none the underlying element should be returned (parser.documentGetDocumentElement(self.document);?)
-
-        var list: std.ArrayListUnmanaged(ElementUnion) = .empty;
-        try list.ensureTotalCapacity(page.call_arena, 3);
-        list.appendAssumeCapacity(try Element.toInterface(element));
-
-        // Since we are using a flat renderer there is no hierarchy of elements. What we do know is that the element is part of the main document.
-        // Thus we can add the HtmlHtmlElement and it's child HTMLBodyElement to the returned list.
-        // TBD Should we instead return every parent that is an element? Note that a child does not physically need to be overlapping the parent.
-        // Should we do a render pass on demand?
-        const doc_elem = try parser.documentGetDocumentElement(parser.documentHTMLToDocument(page.window.document)) orelse {
-            return list.items;
-        };
-        if (try parser.documentHTMLBody(page.window.document)) |body| {
-            list.appendAssumeCapacity(try Element.toInterface(parser.bodyToElement(body)));
-        }
-        list.appendAssumeCapacity(try Element.toInterface(doc_elem));
-        return list.items;
-    }
-
-    pub fn documentIsLoaded(self: *parser.DocumentHTML, page: *Page) !void {
-        const state = try page.getOrCreateNodeState(@alignCast(@ptrCast(self)));
-        state.ready_state = .interactive;
-
-        const evt = try parser.eventCreate();
-        defer parser.eventDestroy(evt);
-
-        log.debug(.script_event, "dispatch event", .{
-            .type = "DOMContentLoaded",
-            .source = "document",
-        });
-        try parser.eventInit(evt, "DOMContentLoaded", .{ .bubbles = true, .cancelable = true });
-        _ = try parser.eventTargetDispatchEvent(parser.toEventTarget(parser.DocumentHTML, self), evt);
-    }
-
-    pub fn documentIsComplete(self: *parser.DocumentHTML, page: *Page) !void {
-        const state = try page.getOrCreateNodeState(@alignCast(@ptrCast(self)));
-        state.ready_state = .complete;
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-
-test "Browser.HTML.Document" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "document.__proto__.constructor.name", "HTMLDocument" },
-        .{ "document.__proto__.__proto__.constructor.name", "Document" },
-        .{ "document.body.localName == 'body'", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.domain", "" },
-        .{ "document.referrer", "" },
-        .{ "document.title", "" },
-        .{ "document.body.localName", "body" },
-        .{ "document.head.localName", "head" },
-        .{ "document.images.length", "0" },
-        .{ "document.embeds.length", "0" },
-        .{ "document.plugins.length", "0" },
-        .{ "document.scripts.length", "0" },
-        .{ "document.forms.length", "0" },
-        .{ "document.links.length", "1" },
-        .{ "document.applets.length", "0" },
-        .{ "document.anchors.length", "0" },
-        .{ "document.all.length", "8" },
-        .{ "document.currentScript", "null" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.title = 'foo'", "foo" },
-        .{ "document.title", "foo" },
-        .{ "document.title = ''", "" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.getElementById('link').setAttribute('name', 'foo')", "undefined" },
-        .{ "let list = document.getElementsByName('foo')", "undefined" },
-        .{ "list.length", "1" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.cookie", "" },
-        .{ "document.cookie = 'name=Oeschger; SameSite=None; Secure'", "name=Oeschger; SameSite=None; Secure" },
-        .{ "document.cookie = 'favorite_food=tripe; SameSite=None; Secure'", "favorite_food=tripe; SameSite=None; Secure" },
-        .{ "document.cookie", "name=Oeschger; favorite_food=tripe" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.elementFromPoint(0.5, 0.5)", "null" }, //  Return null since we only return element s when they have previously been localized
-        .{ "document.elementsFromPoint(0.5, 0.5)", "" },
-        .{
-            \\ let div1 = document.createElement('div');
-            \\ document.body.appendChild(div1);
-            \\ div1.getClientRects();
-            ,
-            null,
-        },
-        .{ "document.elementFromPoint(0.5, 0.5)", "[object HTMLDivElement]" },
-        .{ "let elems = document.elementsFromPoint(0.5, 0.5)", null },
-        .{ "elems.length", "3" },
-        .{ "elems[0]", "[object HTMLDivElement]" },
-        .{ "elems[1]", "[object HTMLBodyElement]" },
-        .{ "elems[2]", "[object HTMLHtmlElement]" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{
-            \\ let a = document.createElement('a');
-            \\ a.href = "https://lightpanda.io";
-            \\ document.body.appendChild(a);
-            \\ a.getClientRects();
-            , // Note this will be placed after the div of previous test
-            null,
-        },
-        .{ "let a_again = document.elementFromPoint(1.5, 0.5)", null },
-        .{ "a_again", "[object HTMLAnchorElement]" },
-        .{ "a_again.href", "https://lightpanda.io" },
-        .{ "let a_agains = document.elementsFromPoint(1.5, 0.5)", null },
-        .{ "a_agains[0].href", "https://lightpanda.io" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "!document.all", "true" },
-        .{ "!!document.all", "false" },
-        .{ "document.all(5)", "[object HTMLParagraphElement]" },
-        .{ "document.all('content')", "[object HTMLDivElement]" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.defaultView.document == document", "true" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "document.readyState", "loading" },
-    }, .{});
-
-    try HTMLDocument.documentIsLoaded(runner.page.window.document, runner.page);
-    try runner.testCases(&.{
-        .{ "document.readyState", "interactive" },
-    }, .{});
-
-    try HTMLDocument.documentIsComplete(runner.page.window.document, runner.page);
-    try runner.testCases(&.{
-        .{ "document.readyState", "complete" },
-    }, .{});
-}

src/browser/html/history.zig

@@ -1,120 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-// https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-history-interface
-pub const History = struct {
-    const ScrollRestorationMode = enum {
-        auto,
-        manual,
-    };
-
-    scrollRestoration: ScrollRestorationMode = .auto,
-    state: std.json.Value = .null,
-
-    // count tracks the history length until we implement correctly pushstate.
-    count: u32 = 0,
-
-    pub fn get_length(self: *History) u32 {
-        // TODO return the real history length value.
-        return self.count;
-    }
-
-    pub fn get_scrollRestoration(self: *History) []const u8 {
-        return switch (self.scrollRestoration) {
-            .auto => "auto",
-            .manual => "manual",
-        };
-    }
-
-    pub fn set_scrollRestoration(self: *History, mode: []const u8) void {
-        if (std.mem.eql(u8, "manual", mode)) self.scrollRestoration = .manual;
-        if (std.mem.eql(u8, "auto", mode)) self.scrollRestoration = .auto;
-    }
-
-    pub fn get_state(self: *History) std.json.Value {
-        return self.state;
-    }
-
-    // TODO implement the function
-    // data must handle any argument. We could expect a std.json.Value but
-    // https://github.com/lightpanda-io/zig-js-runtime/issues/267 is missing.
-    pub fn _pushState(self: *History, data: []const u8, _: ?[]const u8, url: ?[]const u8) void {
-        self.count += 1;
-        _ = url;
-        _ = data;
-    }
-
-    // TODO implement the function
-    // data must handle any argument. We could expect a std.json.Value but
-    // https://github.com/lightpanda-io/zig-js-runtime/issues/267 is missing.
-    pub fn _replaceState(self: *History, data: []const u8, _: ?[]const u8, url: ?[]const u8) void {
-        _ = self;
-        _ = url;
-        _ = data;
-    }
-
-    // TODO implement the function
-    pub fn _go(self: *History, delta: ?i32) void {
-        _ = self;
-        _ = delta;
-    }
-
-    // TODO implement the function
-    pub fn _back(self: *History) void {
-        _ = self;
-    }
-
-    // TODO implement the function
-    pub fn _forward(self: *History) void {
-        _ = self;
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.HTML.History" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "history.scrollRestoration", "auto" },
-        .{ "history.scrollRestoration = 'manual'", "manual" },
-        .{ "history.scrollRestoration = 'foo'", "foo" },
-        .{ "history.scrollRestoration", "manual" },
-        .{ "history.scrollRestoration = 'auto'", "auto" },
-        .{ "history.scrollRestoration", "auto" },
-
-        .{ "history.state", "null" },
-
-        .{ "history.pushState({}, null, '')", "undefined" },
-
-        .{ "history.replaceState({}, null, '')", "undefined" },
-
-        .{ "history.go()", "undefined" },
-        .{ "history.go(1)", "undefined" },
-        .{ "history.go(-1)", "undefined" },
-
-        .{ "history.forward()", "undefined" },
-
-        .{ "history.back()", "undefined" },
-    }, .{});
-}

src/browser/html/html.zig

@@ -1,41 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const HTMLDocument = @import("document.zig").HTMLDocument;
-const HTMLElem = @import("elements.zig");
-const SVGElem = @import("svg_elements.zig");
-const Window = @import("window.zig").Window;
-const Navigator = @import("navigator.zig").Navigator;
-const History = @import("history.zig").History;
-const Location = @import("location.zig").Location;
-const MediaQueryList = @import("media_query_list.zig").MediaQueryList;
-const Performance = @import("performance.zig").Performance;
-
-pub const Interfaces = .{
-    HTMLDocument,
-    HTMLElem.HTMLElement,
-    HTMLElem.HTMLMediaElement,
-    HTMLElem.Interfaces,
-    SVGElem.SVGElement,
-    Window,
-    Navigator,
-    History,
-    Location,
-    MediaQueryList,
-    Performance,
-};

src/browser/html/location.zig

@@ -1,106 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const Page = @import("../page.zig").Page;
-
-const URL = @import("../url/url.zig").URL;
-
-// https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-location-interface
-pub const Location = struct {
-    url: ?URL = null,
-
-    pub fn get_href(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_href(page);
-        return "";
-    }
-
-    pub fn get_protocol(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_protocol(page);
-        return "";
-    }
-
-    pub fn get_host(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_host(page);
-        return "";
-    }
-
-    pub fn get_hostname(self: *Location) []const u8 {
-        if (self.url) |*u| return u.get_hostname();
-        return "";
-    }
-
-    pub fn get_port(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_port(page);
-        return "";
-    }
-
-    pub fn get_pathname(self: *Location) []const u8 {
-        if (self.url) |*u| return u.get_pathname();
-        return "";
-    }
-
-    pub fn get_search(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_search(page);
-        return "";
-    }
-
-    pub fn get_hash(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_hash(page);
-        return "";
-    }
-
-    pub fn get_origin(self: *Location, page: *Page) ![]const u8 {
-        if (self.url) |*u| return u.get_origin(page);
-        return "";
-    }
-
-    pub fn _assign(_: *const Location, url: []const u8, page: *Page) !void {
-        return page.navigateFromWebAPI(url, .{ .reason = .script });
-    }
-
-    pub fn _replace(_: *const Location, url: []const u8, page: *Page) !void {
-        return page.navigateFromWebAPI(url, .{ .reason = .script });
-    }
-
-    pub fn _reload(_: *const Location, page: *Page) !void {
-        return page.navigateFromWebAPI(page.url.raw, .{ .reason = .script });
-    }
-
-    pub fn _toString(self: *Location, page: *Page) ![]const u8 {
-        return try self.get_href(page);
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.HTML.Location" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "location.href", "https://lightpanda.io/opensource-browser/" },
-        .{ "document.location.href", "https://lightpanda.io/opensource-browser/" },
-
-        .{ "location.host", "lightpanda.io" },
-        .{ "location.hostname", "lightpanda.io" },
-        .{ "location.origin", "https://lightpanda.io" },
-        .{ "location.pathname", "/opensource-browser/" },
-        .{ "location.hash", "" },
-        .{ "location.port", "" },
-        .{ "location.search", "" },
-    }, .{});
-}

src/browser/html/media_query_list.zig

@@ -1,45 +0,0 @@
-// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const parser = @import("../netsurf.zig");
-const Function = @import("../env.zig").Function;
-const EventTarget = @import("../dom/event_target.zig").EventTarget;
-
-// https://drafts.csswg.org/cssom-view/#the-mediaquerylist-interface
-pub const MediaQueryList = struct {
-    pub const prototype = *EventTarget;
-
-    // Extend libdom event target for pure zig struct.
-    // This is not safe as it relies on a structure layout that isn't guaranteed
-    base: parser.EventTargetTBase = parser.EventTargetTBase{},
-
-    matches: bool,
-    media: []const u8,
-
-    pub fn get_matches(self: *const MediaQueryList) bool {
-        return self.matches;
-    }
-
-    pub fn get_media(self: *const MediaQueryList) []const u8 {
-        return self.media;
-    }
-
-    pub fn _addListener(_: *const MediaQueryList, _: Function) void {}
-
-    pub fn _removeListener(_: *const MediaQueryList, _: Function) void {}
-};

src/browser/html/navigator.zig

@@ -1,96 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const builtin = @import("builtin");
-
-// https://html.spec.whatwg.org/multipage/system-state.html#navigator
-pub const Navigator = struct {
-    agent: []const u8 = "Lightpanda/1.0",
-    version: []const u8 = "1.0",
-    vendor: []const u8 = "",
-    platform: []const u8 = std.fmt.comptimePrint("{any} {any}", .{ builtin.os.tag, builtin.cpu.arch }),
-
-    language: []const u8 = "en-US",
-
-    pub fn get_userAgent(self: *Navigator) []const u8 {
-        return self.agent;
-    }
-    pub fn get_appCodeName(_: *Navigator) []const u8 {
-        return "Mozilla";
-    }
-    pub fn get_appName(_: *Navigator) []const u8 {
-        return "Netscape";
-    }
-    pub fn get_appVersion(self: *Navigator) []const u8 {
-        return self.version;
-    }
-    pub fn get_platform(self: *Navigator) []const u8 {
-        return self.platform;
-    }
-    pub fn get_product(_: *Navigator) []const u8 {
-        return "Gecko";
-    }
-    pub fn get_productSub(_: *Navigator) []const u8 {
-        return "20030107";
-    }
-    pub fn get_vendor(self: *Navigator) []const u8 {
-        return self.vendor;
-    }
-    pub fn get_vendorSub(_: *Navigator) []const u8 {
-        return "";
-    }
-    pub fn get_language(self: *Navigator) []const u8 {
-        return self.language;
-    }
-    // TODO wait for arrays.
-    //pub fn get_languages(self: *Navigator) [][]const u8 {
-    //    return .{self.language};
-    //}
-    pub fn get_online(_: *Navigator) bool {
-        return true;
-    }
-    pub fn _registerProtocolHandler(_: *Navigator, scheme: []const u8, url: []const u8) void {
-        _ = scheme;
-        _ = url;
-    }
-    pub fn _unregisterProtocolHandler(_: *Navigator, scheme: []const u8, url: []const u8) void {
-        _ = scheme;
-        _ = url;
-    }
-
-    pub fn get_cookieEnabled(_: *Navigator) bool {
-        return true;
-    }
-};
-
-// Tests
-// -----
-
-const testing = @import("../../testing.zig");
-test "Browser.HTML.Navigator" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "navigator.userAgent", "Lightpanda/1.0" },
-        .{ "navigator.appVersion", "1.0" },
-        .{ "navigator.language", "en-US" },
-    }, .{});
-}

src/browser/html/performance.zig

@@ -1,87 +0,0 @@
-// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-const EventTarget = @import("../dom/event_target.zig").EventTarget;
-
-// https://developer.mozilla.org/en-US/docs/Web/API/Performance
-pub const Performance = struct {
-    pub const prototype = *EventTarget;
-
-    // Extend libdom event target for pure zig struct.
-    base: parser.EventTargetTBase = parser.EventTargetTBase{},
-
-    time_origin: std.time.Timer,
-    // if (Window.crossOriginIsolated) -> Resolution in isolated contexts:       5 microseconds
-    // else                            -> Resolution in non-isolated contexts: 100 microseconds
-    const ms_resolution = 100;
-
-    fn limitedResolutionMs(nanoseconds: u64) f64 {
-        const elapsed_at_resolution = ((nanoseconds / std.time.ns_per_us) + ms_resolution / 2) / ms_resolution * ms_resolution;
-        const elapsed = @as(f64, @floatFromInt(elapsed_at_resolution));
-        return elapsed / @as(f64, std.time.us_per_ms);
-    }
-
-    pub fn get_timeOrigin(self: *const Performance) f64 {
-        const is_posix = switch (@import("builtin").os.tag) { // From std.time.zig L125
-            .windows, .uefi, .wasi => false,
-            else => true,
-        };
-        const zero = std.time.Instant{ .timestamp = if (!is_posix) 0 else .{ .sec = 0, .nsec = 0 } };
-        const started = self.time_origin.started.since(zero);
-        return limitedResolutionMs(started);
-    }
-
-    pub fn _now(self: *Performance) f64 {
-        return limitedResolutionMs(self.time_origin.read());
-    }
-};
-
-const testing = @import("./../../testing.zig");
-
-test "Performance: get_timeOrigin" {
-    var perf = Performance{ .time_origin = try std.time.Timer.start() };
-    const time_origin = perf.get_timeOrigin();
-    try testing.expect(time_origin >= 0);
-
-    // Check resolution
-    try testing.expectDelta(@rem(time_origin * std.time.us_per_ms, 100.0), 0.0, 0.1);
-}
-
-test "Performance: now" {
-    var perf = Performance{ .time_origin = try std.time.Timer.start() };
-
-    // Monotonically increasing
-    var now = perf._now();
-    while (now <= 0) { // Loop for now to not be 0
-        try testing.expectEqual(now, 0);
-        now = perf._now();
-    }
-    // Check resolution
-    try testing.expectDelta(@rem(now * std.time.us_per_ms, 100.0), 0.0, 0.1);
-
-    var after = perf._now();
-    while (after <= now) { // Loop untill after > now
-        try testing.expectEqual(after, now);
-        after = perf._now();
-    }
-    // Check resolution
-    try testing.expectDelta(@rem(after * std.time.us_per_ms, 100.0), 0.0, 0.1);
-}

src/browser/html/select.zig

@@ -1,144 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-const std = @import("std");
-
-const parser = @import("../netsurf.zig");
-const HTMLElement = @import("elements.zig").HTMLElement;
-const Page = @import("../page.zig").Page;
-
-pub const HTMLSelectElement = struct {
-    pub const Self = parser.Select;
-    pub const prototype = *HTMLElement;
-    pub const subtype = .node;
-
-    pub fn get_length(select: *parser.Select) !u32 {
-        return parser.selectGetLength(select);
-    }
-
-    pub fn get_form(select: *parser.Select) !?*parser.Form {
-        return parser.selectGetForm(select);
-    }
-
-    pub fn get_name(select: *parser.Select) ![]const u8 {
-        return parser.selectGetName(select);
-    }
-    pub fn set_name(select: *parser.Select, name: []const u8) !void {
-        return parser.selectSetName(select, name);
-    }
-
-    pub fn get_disabled(select: *parser.Select) !bool {
-        return parser.selectGetDisabled(select);
-    }
-    pub fn set_disabled(select: *parser.Select, disabled: bool) !void {
-        return parser.selectSetDisabled(select, disabled);
-    }
-
-    pub fn get_multiple(select: *parser.Select) !bool {
-        return parser.selectGetMultiple(select);
-    }
-    pub fn set_multiple(select: *parser.Select, multiple: bool) !void {
-        return parser.selectSetMultiple(select, multiple);
-    }
-
-    pub fn get_selectedIndex(select: *parser.Select, page: *Page) !i32 {
-        const state = try page.getOrCreateNodeState(@alignCast(@ptrCast(select)));
-        const selected_index = try parser.selectGetSelectedIndex(select);
-
-        // See the explicit_index_set field documentation
-        if (!state.explicit_index_set) {
-            if (selected_index == -1) {
-                if (try parser.selectGetMultiple(select) == false) {
-                    if (try get_length(select) > 0) {
-                        return 0;
-                    }
-                }
-            }
-        }
-        return selected_index;
-    }
-
-    // Libdom's dom_html_select_select_set_selected_index will crash if index
-    // is out of range, and it doesn't properly unset options
-    pub fn set_selectedIndex(select: *parser.Select, index: i32, page: *Page) !void {
-        var state = try page.getOrCreateNodeState(@alignCast(@ptrCast(select)));
-        state.explicit_index_set = true;
-
-        const options = try parser.selectGetOptions(select);
-        const len = try parser.optionCollectionGetLength(options);
-        for (0..len) |i| {
-            const option = try parser.optionCollectionItem(options, @intCast(i));
-            try parser.optionSetSelected(option, false);
-        }
-        if (index >= 0 and index < try get_length(select)) {
-            const option = try parser.optionCollectionItem(options, @intCast(index));
-            try parser.optionSetSelected(option, true);
-        }
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.HTML.Select" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{ .html = 
-        \\ <form id=f1>
-        \\  <select id=s1 name=s1><option>o1<option>o2</select>
-        \\ </form>
-        \\ <select id=s2></select>
-    });
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "const s = document.getElementById('s1');", null },
-        .{ "s.form", "[object HTMLFormElement]" },
-
-        .{ "document.getElementById('s2').form", "null" },
-
-        .{ "s.disabled", "false" },
-        .{ "s.disabled = true", null },
-        .{ "s.disabled", "true" },
-        .{ "s.disabled = false", null },
-        .{ "s.disabled", "false" },
-
-        .{ "s.multiple", "false" },
-        .{ "s.multiple = true", null },
-        .{ "s.multiple", "true" },
-        .{ "s.multiple = false", null },
-        .{ "s.multiple", "false" },
-
-        .{ "s.name;", "s1" },
-        .{ "s.name = 'sel1';", null },
-        .{ "s.name", "sel1" },
-
-        .{ "s.length;", "2" },
-
-        .{ "s.selectedIndex", "0" },
-        .{ "s.selectedIndex = 2", null }, // out of range
-        .{ "s.selectedIndex", "-1" },
-
-        .{ "s.selectedIndex = -1", null },
-        .{ "s.selectedIndex", "-1" },
-
-        .{ "s.selectedIndex = 0", null },
-        .{ "s.selectedIndex", "0" },
-
-        .{ "s.selectedIndex = 1", null },
-        .{ "s.selectedIndex", "1" },
-
-        .{ "s.selectedIndex = -323", null },
-        .{ "s.selectedIndex", "-1" },
-    }, .{});
-}

src/browser/html/svg_elements.zig

@@ -1,41 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const Element = @import("../dom/element.zig").Element;
-
-// Support for SVGElements is very limited, this is a dummy implementation.
-// This is here no to be able to support `element instanceof SVGElement;` in JavaScript.
-// https://developer.mozilla.org/en-US/docs/Web/API/SVGElement
-pub const SVGElement = struct {
-    // Currently the prototype chain is not implemented (will not be returned by toInterface())
-    // For that we need parser.SvgElement and the derived types with tags in the v-table.
-    pub const prototype = *Element;
-    // While this is a Node, could consider not exposing the subtype untill we have
-    // a Self type to cast to.
-    pub const subtype = .node;
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.HTML.SVGElement" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "'AString' instanceof SVGElement", "false" },
-    }, .{});
-}

src/browser/html/window.zig

@@ -1,390 +0,0 @@
-// Copyright (C) 2023-2024  Lightpanda (Selecy SAS)
-//
-// Francis Bouvier <francis@lightpanda.io>
-// Pierre Tachoire <pierre@lightpanda.io>
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as
-// published by the Free Software Foundation, either version 3 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-const std = @import("std");
-
-const log = @import("../../log.zig");
-const parser = @import("../netsurf.zig");
-const Function = @import("../env.zig").Function;
-const Page = @import("../page.zig").Page;
-const Loop = @import("../../runtime/loop.zig").Loop;
-
-const Navigator = @import("navigator.zig").Navigator;
-const History = @import("history.zig").History;
-const Location = @import("location.zig").Location;
-const Crypto = @import("../crypto/crypto.zig").Crypto;
-const Console = @import("../console/console.zig").Console;
-const EventTarget = @import("../dom/event_target.zig").EventTarget;
-const MediaQueryList = @import("media_query_list.zig").MediaQueryList;
-const Performance = @import("performance.zig").Performance;
-const CSSStyleDeclaration = @import("../cssom/css_style_declaration.zig").CSSStyleDeclaration;
-const CustomElementRegistry = @import("../webcomponents/custom_element_registry.zig").CustomElementRegistry;
-
-const storage = @import("../storage/storage.zig");
-
-// https://dom.spec.whatwg.org/#interface-window-extensions
-// https://html.spec.whatwg.org/multipage/nav-history-apis.html#window
-pub const Window = struct {
-    pub const prototype = *EventTarget;
-
-    // Extend libdom event target for pure zig struct.
-    base: parser.EventTargetTBase = parser.EventTargetTBase{},
-
-    document: *parser.DocumentHTML,
-    target: []const u8 = "",
-    history: History = .{},
-    location: Location = .{},
-    storage_shelf: ?*storage.Shelf = null,
-
-    // counter for having unique timer ids
-    timer_id: u30 = 0,
-    timers: std.AutoHashMapUnmanaged(u32, *TimerCallback) = .{},
-
-    crypto: Crypto = .{},
-    console: Console = .{},
-    navigator: Navigator = .{},
-    performance: Performance,
-    custom_elements: CustomElementRegistry = .{},
-
-    pub fn create(target: ?[]const u8, navigator: ?Navigator) !Window {
-        var fbs = std.io.fixedBufferStream("");
-        const html_doc = try parser.documentHTMLParse(fbs.reader(), "utf-8");
-        const doc = parser.documentHTMLToDocument(html_doc);
-        try parser.documentSetDocumentURI(doc, "about:blank");
-
-        return .{
-            .document = html_doc,
-            .target = target orelse "",
-            .navigator = navigator orelse .{},
-            .performance = .{ .time_origin = try std.time.Timer.start() },
-        };
-    }
-
-    pub fn replaceLocation(self: *Window, loc: Location) !void {
-        self.location = loc;
-        try parser.documentHTMLSetLocation(Location, self.document, &self.location);
-    }
-
-    pub fn replaceDocument(self: *Window, doc: *parser.DocumentHTML) !void {
-        self.performance.time_origin.reset(); // When to reset see: https://developer.mozilla.org/en-US/docs/Web/API/Performance/timeOrigin
-        self.document = doc;
-        try parser.documentHTMLSetLocation(Location, doc, &self.location);
-    }
-
-    pub fn setStorageShelf(self: *Window, shelf: *storage.Shelf) void {
-        self.storage_shelf = shelf;
-    }
-
-    pub fn get_window(self: *Window) *Window {
-        return self;
-    }
-
-    pub fn get_navigator(self: *Window) *Navigator {
-        return &self.navigator;
-    }
-
-    pub fn get_location(self: *Window) *Location {
-        return &self.location;
-    }
-
-    pub fn set_location(_: *const Window, url: []const u8, page: *Page) !void {
-        return page.navigateFromWebAPI(url, .{ .reason = .script });
-    }
-
-    pub fn get_console(self: *Window) *Console {
-        return &self.console;
-    }
-
-    pub fn get_crypto(self: *Window) *Crypto {
-        return &self.crypto;
-    }
-
-    pub fn get_self(self: *Window) *Window {
-        return self;
-    }
-
-    pub fn get_parent(self: *Window) *Window {
-        return self;
-    }
-
-    // TODO: frames
-    pub fn get_top(self: *Window) *Window {
-        return self;
-    }
-
-    pub fn get_document(self: *Window) ?*parser.DocumentHTML {
-        return self.document;
-    }
-
-    pub fn get_history(self: *Window) *History {
-        return &self.history;
-    }
-
-    //  The interior height of the window in pixels, including the height of the horizontal scroll bar, if present.
-    pub fn get_innerHeight(_: *Window, page: *Page) u32 {
-        // We do not have scrollbars or padding so this is the same as Element.clientHeight
-        return page.renderer.height();
-    }
-
-    // The interior width of the window in pixels. That includes the width of the vertical scroll bar, if one is present.
-    pub fn get_innerWidth(_: *Window, page: *Page) u32 {
-        // We do not have scrollbars or padding so this is the same as Element.clientWidth
-        return page.renderer.width();
-    }
-
-    pub fn get_name(self: *Window) []const u8 {
-        return self.target;
-    }
-
-    pub fn get_localStorage(self: *Window) !*storage.Bottle {
-        if (self.storage_shelf == null) return parser.DOMError.NotSupported;
-        return &self.storage_shelf.?.bucket.local;
-    }
-
-    pub fn get_sessionStorage(self: *Window) !*storage.Bottle {
-        if (self.storage_shelf == null) return parser.DOMError.NotSupported;
-        return &self.storage_shelf.?.bucket.session;
-    }
-
-    pub fn get_performance(self: *Window) *Performance {
-        return &self.performance;
-    }
-
-    pub fn get_customElements(self: *Window) *CustomElementRegistry {
-        return &self.custom_elements;
-    }
-
-    pub fn _requestAnimationFrame(self: *Window, cbk: Function, page: *Page) !u32 {
-        return self.createTimeout(cbk, 5, page, .{ .animation_frame = true });
-    }
-
-    pub fn _cancelAnimationFrame(self: *Window, id: u32, page: *Page) !void {
-        const kv = self.timers.fetchRemove(id) orelse return;
-        return page.loop.cancel(kv.value.loop_id);
-    }
-
-    // TODO handle callback arguments.
-    pub fn _setTimeout(self: *Window, cbk: Function, delay: ?u32, page: *Page) !u32 {
-        return self.createTimeout(cbk, delay, page, .{});
-    }
-
-    // TODO handle callback arguments.
-    pub fn _setInterval(self: *Window, cbk: Function, delay: ?u32, page: *Page) !u32 {
-        return self.createTimeout(cbk, delay, page, .{ .repeat = true });
-    }
-
-    pub fn _clearTimeout(self: *Window, id: u32, page: *Page) !void {
-        const kv = self.timers.fetchRemove(id) orelse return;
-        return page.loop.cancel(kv.value.loop_id);
-    }
-
-    pub fn _clearInterval(self: *Window, id: u32, page: *Page) !void {
-        const kv = self.timers.fetchRemove(id) orelse return;
-        return page.loop.cancel(kv.value.loop_id);
-    }
-
-    pub fn _matchMedia(_: *const Window, media: []const u8, page: *Page) !MediaQueryList {
-        return .{
-            .matches = false, // TODO?
-            .media = try page.arena.dupe(u8, media),
-        };
-    }
-
-    const CreateTimeoutOpts = struct {
-        repeat: bool = false,
-        animation_frame: bool = false,
-    };
-    fn createTimeout(self: *Window, cbk: Function, delay_: ?u32, page: *Page, comptime opts: CreateTimeoutOpts) !u32 {
-        const delay = delay_ orelse 0;
-        if (delay > 5000) {
-            log.warn(.user_script, "long timeout ignored", .{ .delay = delay, .interval = opts.repeat });
-            // self.timer_id is u30, so the largest value we can generate is
-            // 1_073_741_824. Returning 2_000_000_000 makes sure that clients
-            // can call cancelTimer/cancelInterval without breaking anything.
-            return 2_000_000_000;
-        }
-
-        if (self.timers.count() > 512) {
-            return error.TooManyTimeout;
-        }
-        const timer_id = self.timer_id +% 1;
-        self.timer_id = timer_id;
-
-        const arena = page.arena;
-
-        const gop = try self.timers.getOrPut(arena, timer_id);
-        if (gop.found_existing) {
-            // this can only happen if we've created 2^31 timeouts.
-            return error.TooManyTimeout;
-        }
-        errdefer _ = self.timers.remove(timer_id);
-
-        const delay_ms: u63 = @as(u63, delay) * std.time.ns_per_ms;
-        const callback = try arena.create(TimerCallback);
-
-        callback.* = .{
-            .cbk = cbk,
-            .loop_id = 0, // we're going to set this to a real value shortly
-            .window = self,
-            .timer_id = timer_id,
-            .node = .{ .func = TimerCallback.run },
-            .repeat = if (opts.repeat) delay_ms else null,
-            .animation_frame = opts.animation_frame,
-        };
-        callback.loop_id = try page.loop.timeout(delay_ms, &callback.node);
-
-        gop.value_ptr.* = callback;
-        return timer_id;
-    }
-
-    // TODO: getComputedStyle should return a read-only CSSStyleDeclaration.
-    // We currently don't have a read-only one, so we return a new instance on
-    // each call.
-    pub fn _getComputedStyle(_: *const Window, element: *parser.Element, pseudo_element: ?[]const u8) !CSSStyleDeclaration {
-        _ = element;
-        _ = pseudo_element;
-        return .empty;
-    }
-
-    const ScrollToOpts = union(enum) {
-        x: i32,
-        opts: Opts,
-
-        const Opts = struct {
-            top: i32,
-            left: i32,
-            behavior: []const u8,
-        };
-    };
-    pub fn _scrollTo(_: *const Window, opts: ScrollToOpts, y: ?u32) void {
-        _ = opts;
-        _ = y;
-    }
-};
-
-const TimerCallback = struct {
-    // the internal loop id, need it when cancelling
-    loop_id: usize,
-
-    // the id of our timer (windows.timers key)
-    timer_id: u31,
-
-    // The JavaScript callback to execute
-    cbk: Function,
-
-    // This is the internal data that the event loop tracks. We'll get this
-    // back in run and, from it, can get our TimerCallback instance
-    node: Loop.CallbackNode = undefined,
-
-    // if the event should be repeated
-    repeat: ?u63 = null,
-
-    animation_frame: bool = false,
-
-    window: *Window,
-
-    fn run(node: *Loop.CallbackNode, repeat_delay: *?u63) void {
-        const self: *TimerCallback = @fieldParentPtr("node", node);
-
-        var result: Function.Result = undefined;
-
-        var call: anyerror!void = undefined;
-        if (self.animation_frame) {
-            call = self.cbk.tryCall(void, .{self.window.performance._now()}, &result);
-        } else {
-            call = self.cbk.tryCall(void, .{}, &result);
-        }
-
-        call catch {
-            log.debug(.user_script, "callback error", .{
-                .err = result.exception,
-                .stack = result.stack,
-                .source = "window timeout",
-            });
-        };
-
-        if (self.repeat) |r| {
-            // setInterval
-            repeat_delay.* = r;
-            return;
-        }
-
-        // setTimeout
-        _ = self.window.timers.remove(self.timer_id);
-    }
-};
-
-const testing = @import("../../testing.zig");
-test "Browser.HTML.Window" {
-    var runner = try testing.jsRunner(testing.tracking_allocator, .{});
-    defer runner.deinit();
-
-    try runner.testCases(&.{
-        .{ "window.parent === window", "true" },
-        .{ "window.top === window", "true" },
-    }, .{});
-
-    // requestAnimationFrame should be able to wait by recursively calling itself
-    // Note however that we in this test do not wait as the request is just send to the browser
-    try runner.testCases(&.{
-        .{
-            \\ let start = 0;
-            \\ function step(timestamp) {
-            \\    start = timestamp;
-            \\ }
-            ,
-            null,
-        },
-        .{ "requestAnimationFrame(step);", null }, // returned id is checked in the next test
-        .{ " start > 0", "true" },
-    }, .{});
-
-    // cancelAnimationFrame should be able to cancel a request with the given id
-    try runner.testCases(&.{
-        .{ "let request_id = requestAnimationFrame(timestamp => {});", null },
-        .{ "cancelAnimationFrame(request_id);", "undefined" },
-    }, .{});
-
-    try runner.testCases(&.{
-        .{ "innerHeight", "1" },
-        .{ "innerWidth", "1" }, // Width is 1 even if there are no elements
-        .{
-            \\ let div1 = document.createElement('div');
-            \\ document.body.appendChild(div1);
-            \\ div1.getClientRects();
-            ,
-            null,
-        },
-        .{
-            \\ let div2 = document.createElement('div');
-            \\ document.body.appendChild(div2);
-            \\ div2.getClientRects();
-            ,
-            null,
-        },
-        .{ "innerHeight", "1" },
-        .{ "innerWidth", "2" },
-    }, .{});
-
-    // cancelAnimationFrame should be able to cancel a request with the given id
-    try runner.testCases(&.{
-        .{ "let longCall = false;", null },
-        .{ "window.setTimeout(() => {longCall = true}, 5001);", null },
-        .{ "longCall;", "false" },
-    }, .{});
-}

src/browser/iterator/iterator.zig

@@ -1,226 +0,0 @@
-pub const Interfaces = .{
-    U32Iterator,
-};
-
-pub const U32Iterator = struct {
-    length: u32,
-    index: u32 = 0,
-
-    pub const Return = struct {
-        value: u32,
-        done: bool,
-    };
-
-    pub fn _next(self: *U32Iterator) Return {
-        const i = self.index;
-        if (i >= self.length) {
-            return .{
-                .value = 0,
-                .done = true,
-            };
-        }
-
-        self.index = i + 1;
-        return .{
-            .value = i,
-            .done = false,
-        };
-    }
-
-    // Iterators should be iterable. There's a [JS] example on MDN that
-    // suggests this is the correct approach:
-    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#the_iterator_protocol
-    pub fn _symbol_iterator(self: *U32Iterator) *U32Iterator {
-        return self;
-    }
-};
-
-// A wrapper around an iterator that emits an Iterable result
-// An iterable has a next() which emits a {done: bool, value: T} result
-pub fn Iterable(comptime T: type, comptime JsName: []const u8) type {
-    // The inner iterator's return type.
-    // Maybe an error union.
-    // Definitely an optional
-    const RawValue = @typeInfo(@TypeOf(T._next)).@"fn".return_type.?;
-    const CanError = @typeInfo(RawValue) == .error_union;
-
-    const Value = blk: {
-        // Unwrap the RawValue
-        var V = RawValue;
-        if (CanError) {
-            V = @typeInfo(V).error_union.payload;
-        }
-        break :blk @typeInfo(V).optional.child;
-    };
-
-    const Result = struct {
-        done: bool,
-        // todo, technically, we should return undefined when done = true
-        // or even omit the value;
-        value: ?Value,
-    };
-
-    const ReturnType = if (CanError) T.Error!Result else Result;
-
-    return struct {
-        // the inner value iterator
-        inner: T,
-
-        // Generics don't generate clean names. Can't just take the resulting
-        // type name and use that as a the JS class name. So we always ask for
-        // an explicit JS class name
-        pub const js_name = JsName;
-
-        const Self = @This();
-
-        pub fn init(inner: T) Self {
-            return .{ .inner = inner };
-        }
-
-        pub fn _next(self: *Self) ReturnType {
-            const value = if (comptime CanError) try self.inner._next() else self.inner._next();
-            return .{ .done = value == null, .value = value };
-        }
-
-        pub fn _symbol_iterator(self: *Self) *Self {
-            return self;
-        }
-    };
-}
-
-// A wrapper around an iterator that emits integer/index keyed entries.
-pub fn NumericEntries(comptime T: type, comptime JsName: []const u8) type {
-    // The inner iterator's return type.
-    // Maybe an error union.
-    // Definitely an optional
-    const RawValue = @typeInfo(@TypeOf(T._next)).@"fn".return_type.?;
-    const CanError = @typeInfo(RawValue) == .error_union;
-
-    const Value = blk: {
-        // Unwrap the RawValue
-        var V = RawValue;
-        if (CanError) {
-            V = @typeInfo(V).error_union.payload;
-        }
-        break :blk @typeInfo(V).optional.child;
-    };
-
-    const ReturnType = if (CanError) T.Error!?struct { u32, Value } else ?struct { u32, Value };
-
-    // Avoid ambiguity. We want to expose a NumericEntries(T).Iterable, so we
-    // need a declartion inside here for an "Iterable", but that will conflict
-    // with the above Iterable generic function we have.
-    const BaseIterable = Iterable;
-
-    return struct {
-        // the inner value iterator
-        inner: T,
-        index: u32,
-
-        const Self = @This();
-
-        // Generics don't generate clean names. Can't just take the resulting
-        // type name and use that as a the JS class name. So we always ask for
-        // an explicit JS class name
-        pub const js_name = JsName;
-
-        // re-exposed for when/if we compose this type into an Iterable
-        pub const Error = T.Error;
-
-        // This iterator as an iterable
-        pub const Iterable = BaseIterable(Self, JsName ++ "Iterable");
-
-        pub fn init(inner: T) Self {
-            return .{ .inner = inner, .index = 0 };
-        }
-
-        pub fn _next(self: *Self) ReturnType {
-            const value_ = if (comptime CanError) try self.inner._next() else self.inner._next();
-            const value = value_ orelse return null;
-
-            const index = self.index;
-            self.index = index + 1;
-            return .{ index, value };
-        }
-
-        // make the iterator, iterable
-        pub fn _symbol_iterator(self: *Self) Self.Iterable {
-            return Self.Iterable.init(self.*);
-        }
-    };
-}
-
-const testing = @import("../../testing.zig");
-test "U32Iterator" {
-    {
-        var it = U32Iterator{ .length = 0 };
-        try testing.expectEqual(.{ .value = 0, .done = true }, it._next());
-        try testing.expectEqual(.{ .value = 0, .done = true }, it._next());
-    }
-
-    {
-        var it = U32Iterator{ .length = 3 };
-        try testing.expectEqual(.{ .value = 0, .done = false }, it._next());
-        try testing.expectEqual(.{ .value = 1, .done = false }, it._next());
-        try testing.expectEqual(.{ .value = 2, .done = false }, it._next());
-        try testing.expectEqual(.{ .value = 0, .done = true }, it._next());
-        try testing.expectEqual(.{ .value = 0, .done = true }, it._next());
-    }
-}
-
-test "NumericEntries" {
-    const it = DummyIterator{};
-    var entries = NumericEntries(DummyIterator, "DummyIterator").init(it);
-
-    const v1 = entries._next().?;
-    try testing.expectEqual(0, v1.@"0");
-    try testing.expectEqual("it's", v1.@"1");
-
-    const v2 = entries._next().?;
-    try testing.expectEqual(1, v2.@"0");
-    try testing.expectEqual("over", v2.@"1");
-
-    const v3 = entries._next().?;
-    try testing.expectEqual(2, v3.@"0");
-    try testing.expectEqual("9000!!", v3.@"1");
-
-    try testing.expectEqual(null, entries._next());
-    try testing.expectEqual(null, entries._next());
-    try testing.expectEqual(null, entries._next());
-}
-
-test "Iterable" {
-    const it = DummyIterator{};
-    var entries = Iterable(DummyIterator, "DummyIterator").init(it);
-
-    const v1 = entries._next();
-    try testing.expectEqual(false, v1.done);
-    try testing.expectEqual("it's", v1.value.?);
-
-    const v2 = entries._next();
-    try testing.expectEqual(false, v2.done);
-    try testing.expectEqual("over", v2.value.?);
-
-    const v3 = entries._next();
-    try testing.expectEqual(false, v3.done);
-    try testing.expectEqual("9000!!", v3.value.?);
-
-    try testing.expectEqual(true, entries._next().done);
-    try testing.expectEqual(true, entries._next().done);
-    try testing.expectEqual(true, entries._next().done);
-}
-
-const DummyIterator = struct {
-    index: u32 = 0,
-
-    pub fn _next(self: *DummyIterator) ?[]const u8 {
-        const index = self.index;
-        self.index = index + 1;
-        return switch (index) {
-            0 => "it's",
-            1 => "over",
-            2 => "9000!!",
-            else => null,
-        };
-    }
-};

src/browser/js/Array.zig

@@ -0,0 +1,66 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const js = @import("js.zig");
+const v8 = js.v8;
+
+const Array = @This();
+
+local: *const js.Local,
+handle: *const v8.Array,
+
+pub fn len(self: Array) usize {
+    return v8.v8__Array__Length(self.handle);
+}
+
+pub fn get(self: Array, index: u32) !js.Value {
+    const ctx = self.local.ctx;
+
+    const idx = js.Integer.init(ctx.isolate.handle, index);
+    const handle = v8.v8__Object__Get(@ptrCast(self.handle), self.local.handle, idx.handle) orelse {
+        return error.JsException;
+    };
+
+    return .{
+        .local = self.local,
+        .handle = handle,
+    };
+}
+
+pub fn set(self: Array, index: u32, value: anytype, comptime opts: js.Caller.CallOpts) !bool {
+    const js_value = try self.local.zigValueToJs(value, opts);
+
+    var out: v8.MaybeBool = undefined;
+    v8.v8__Object__SetAtIndex(@ptrCast(self.handle), self.local.handle, index, js_value.handle, &out);
+    return out.has_value;
+}
+
+pub fn toObject(self: Array) js.Object {
+    return .{
+        .local = self.local,
+        .handle = @ptrCast(self.handle),
+    };
+}
+
+pub fn toValue(self: Array) js.Value {
+    return .{
+        .local = self.local,
+        .handle = @ptrCast(self.handle),
+    };
+}

src/browser/js/BigInt.zig

@@ -0,0 +1,41 @@
+// Copyright (C) 2023-2025  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const js = @import("js.zig");
+const v8 = js.v8;
+
+const BigInt = @This();
+
+handle: *const v8.Integer,
+
+pub fn init(isolate: *v8.Isolate, val: anytype) BigInt {
+    const handle = switch (@TypeOf(val)) {
+        i8, i16, i32, i64, isize => v8.v8__BigInt__New(isolate, val).?,
+        u8, u16, u32, u64, usize => v8.v8__BigInt__NewFromUnsigned(isolate, val).?,
+        else => |T| @compileError("cannot create v8::BigInt from: " ++ @typeName(T)),
+    };
+    return .{ .handle = handle };
+}
+
+pub fn getInt64(self: BigInt) i64 {
+    return v8.v8__BigInt__Int64Value(self.handle, null);
+}
+
+pub fn getUint64(self: BigInt) u64 {
+    return v8.v8__BigInt__Uint64Value(self.handle, null);
+}

src/browser/js/Caller.zig

@@ -0,0 +1,764 @@
+// Copyright (C) 2023-2026  Lightpanda (Selecy SAS)
+//
+// Francis Bouvier <francis@lightpanda.io>
+// Pierre Tachoire <pierre@lightpanda.io>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const std = @import("std");
+const log = @import("../../log.zig");
+const string = @import("../../string.zig");
+
+const Page = @import("../Page.zig");
+
+const js = @import("js.zig");
+const Local = @import("Local.zig");
+const Context = @import("Context.zig");
+const TaggedOpaque = @import("TaggedOpaque.zig");
+
+const v8 = js.v8;
+const ArenaAllocator = std.heap.ArenaAllocator;
+
+const CALL_ARENA_RETAIN = 1024 * 16;
+const IS_DEBUG = @import("builtin").mode == .Debug;
+
+const Caller = @This();
+local: Local,
+prev_local: ?*const js.Local,
+prev_context: *Context,
+
+// Takes the raw v8 isolate and extracts the context from it.
+pub fn init(self: *Caller, v8_isolate: *v8.Isolate) void {
+    const v8_context = v8.v8__Isolate__GetCurrentContext(v8_isolate).?;
+    initWithContext(self, Context.fromC(v8_context), v8_context);
+}
+
+fn initWithContext(self: *Caller, ctx: *Context, v8_context: *const v8.Context) void {
+    ctx.call_depth += 1;
+    self.* = Caller{
+        .local = .{
+            .ctx = ctx,
+            .handle = v8_context,
+            .call_arena = ctx.call_arena,
+            .isolate = ctx.isolate,
+        },
+        .prev_local = ctx.local,
+        .prev_context = ctx.page.js,
+    };
+    ctx.page.js = ctx;
+    ctx.local = &self.local;
+}
+
+pub fn deinit(self: *Caller) void {
+    const ctx = self.local.ctx;
+    const call_depth = ctx.call_depth - 1;
+
+    // Because of callbacks, calls can be nested. Because of this, we
+    // can't clear the call_arena after _every_ call. Imagine we have
+    //    arr.forEach((i) => { console.log(i); }
+    //
+    // First we call forEach. Inside of our forEach call,
+    // we call console.log. If we reset the call_arena after this call,
+    // it'll reset it for the `forEach` call after, which might still
+    // need the data.
+    //
+    // Therefore, we keep a call_depth, and only reset the call_arena
+    // when a top-level (call_depth == 0) function ends.
+    if (call_depth == 0) {
+        const arena: *ArenaAllocator = @ptrCast(@alignCast(ctx.call_arena.ptr));
+        _ = arena.reset(.{ .retain_with_limit = CALL_ARENA_RETAIN });
+    }
+
+    ctx.call_depth = call_depth;
+    ctx.local = self.prev_local;
+    ctx.page.js = self.prev_context;
+}
+
+pub const CallOpts = struct {
+    dom_exception: bool = false,
+    null_as_undefined: bool = false,
+    as_typed_array: bool = false,
+};
+
+pub fn constructor(self: *Caller, comptime T: type, func: anytype, handle: *const v8.FunctionCallbackInfo, comptime opts: CallOpts) void {
+    const local = &self.local;
+
+    var hs: js.HandleScope = undefined;
+    hs.init(local.isolate);
+    defer hs.deinit();
+
+    const info = FunctionCallbackInfo{ .handle = handle };
+
+    if (!info.isConstructCall()) {
+        handleError(T, @TypeOf(func), local, error.InvalidArgument, info, opts);
+        return;
+    }
+
+    self._constructor(func, info) catch |err| {
+        handleError(T, @TypeOf(func), local, err, info, opts);
+    };
+}
+
+fn _constructor(self: *Caller, func: anytype, info: FunctionCallbackInfo) !void {
+    const F = @TypeOf(func);
+    const local = &self.local;
+    const args = try getArgs(F, 0, local, info);
+    const res = @call(.auto, func, args);
+
+    const ReturnType = @typeInfo(F).@"fn".return_type orelse {
+        @compileError(@typeName(F) ++ " has a constructor without a return type");
+    };
+
+    const new_this_handle = info.getThis();
+    var this = js.Object{ .local = local, .handle = new_this_handle };
+    if (@typeInfo(ReturnType) == .error_union) {
+        const non_error_res = res catch |err| return err;
+        this = try local.mapZigInstanceToJs(new_this_handle, non_error_res);
+    } else {
+        this = try local.mapZigInstanceToJs(new_this_handle, res);
+    }
+
+    // If we got back a different object (existing wrapper), copy the prototype
+    // from new object. (this happens when we're upgrading an CustomElement)
+    if (this.handle != new_this_handle) {
+        const prototype_handle = v8.v8__Object__GetPrototype(new_this_handle).?;
+        var out: v8.MaybeBool = undefined;
+        v8.v8__Object__SetPrototype(this.handle, self.local.handle, prototype_handle, &out);
+        if (comptime IS_DEBUG) {
+            std.debug.assert(out.has_value and out.value);
+        }
+    }
+
+    info.getReturnValue().set(this.handle);
+}
+
+pub fn getIndex(self: *Caller, comptime T: type, func: anytype, idx: u32, handle: *const v8.PropertyCallbackInfo, comptime opts: CallOpts) u8 {
+    const local = &self.local;
+
+    var hs: js.HandleScope = undefined;
+    hs.init(local.isolate);
+    defer hs.deinit();
+
+    const info = PropertyCallbackInfo{ .handle = handle };
+    return _getIndex(T, local, func, idx, info, opts) catch |err| {
+        handleError(T, @TypeOf(func), local, err, info, opts);
+        // not intercepted
+        return 0;
+    };
+}
+
+fn _getIndex(comptime T: type, local: *const Local, func: anytype, idx: u32, info: PropertyCallbackInfo, comptime opts: CallOpts) !u8 {
+    const F = @TypeOf(func);
+    var args: ParameterTypes(F) = undefined;
+    @field(args, "0") = try TaggedOpaque.fromJS(*T, info.getThis());
+    @field(args, "1") = idx;
+    if (@typeInfo(F).@"fn".params.len == 3) {
+        @field(args, "2") = local.ctx.page;
+    }
+    const ret = @call(.auto, func, args);
+    return handleIndexedReturn(T, F, true, local, ret, info, opts);
+}
+
+pub fn getNamedIndex(self: *Caller, comptime T: type, func: anytype, name: *const v8.Name, handle: *const v8.PropertyCallbackInfo, comptime opts: CallOpts) u8 {
+    const local = &self.local;
+
+    var hs: js.HandleScope = undefined;
+    hs.init(local.isolate);
+    defer hs.deinit();
+
+    const info = PropertyCallbackInfo{ .handle = handle };
+    return _getNamedIndex(T, local, func, name, info, opts) catch |err| {
+        handleError(T, @TypeOf(func), local, err, info, opts);
+        // not intercepted
+        return 0;
+    };
+}
+
+fn _getNamedIndex(comptime T: type, local: *const Local, func: anytype, name: *const v8.Name, info: PropertyCallbackInfo, comptime opts: CallOpts) !u8 {
+    const F = @TypeOf(func);
+    var args: ParameterTypes(F) = undefined;
+    @field(args, "0") = try TaggedOpaque.fromJS(*T, info.getThis());
+    @field(args, "1") = try nameToString(local, @TypeOf(args.@"1"), name);
+    if (@typeInfo(F).@"fn".params.len == 3) {
+        @field(args, "2") = local.ctx.page;
+    }
+    const ret = @call(.auto, func, args);
+    return handleIndexedReturn(T, F, true, local, ret, info, opts);
+}
+
+pub fn setNamedIndex(self: *Caller, comptime T: type, func: anytype, name: *const v8.Name, js_value: *const v8.Value, handle: *const v8.PropertyCallbackInfo, comptime opts: CallOpts) u8 {
+    const local = &self.local;
+
+    var hs: js.HandleScope = undefined;
+    hs.init(local.isolate);
+    defer hs.deinit();
+
+    const info = PropertyCallbackInfo{ .handle = handle };
+    return _setNamedIndex(T, local, func, name, .{ .local = &self.local, .handle = js_value }, info, opts) catch |err| {
+        handleError(T, @TypeOf(func), local, err, info, opts);
+        // not intercepted
+        return 0;
+    };
+}
+
+fn _setNamedIndex(comptime T: type, local: *const Local, func: anytype, name: *const v8.Name, js_value: js.Value, info: PropertyCallbackInfo, comptime opts: CallOpts) !u8 {
+    const F = @TypeOf(func);
+    var args: ParameterTypes(F) = undefined;
+    @field(args, "0") = try TaggedOpaque.fromJS(*T, info.getThis());
+    @field(args, "1") = try nameToString(local, @TypeOf(args.@"1"), name);
+    @field(args, "2") = try local.jsValueToZig(@TypeOf(@field(args, "2")), js_value);
+    if (@typeInfo(F).@"fn".params.len == 4) {
+        @field(args, "3") = local.ctx.page;
+    }
+    const ret = @call(.auto, func, args);
+    return handleIndexedReturn(T, F, false, local, ret, info, opts);
+}
+
+pub fn deleteNamedIndex(self: *Caller, comptime T: type, func: anytype, name: *const v8.Name, handle: *const v8.PropertyCallbackInfo, comptime opts: CallOpts) u8 {
+    const local = &self.local;
+
+    var hs: js.HandleScope = undefined;
+    hs.init(local.isolate);
+    defer hs.deinit();
+
+    const info = PropertyCallbackInfo{ .handle = handle };
+    return _deleteNamedIndex(T, local, func, name, info, opts) catch |err| {
+        handleError(T, @TypeOf(func), local, err, info, opts);
+        return 0;
+    };
+}
+
+fn _deleteNamedIndex(comptime T: type, local: *const Local, func: anytype, name: *const v8.Name, info: PropertyCallbackInfo, comptime opts: CallOpts) !u8 {
+    const F = @TypeOf(func);
+    var args: ParameterTypes(F) = undefined;
+    @field(args, "0") = try TaggedOpaque.fromJS(*T, info.getThis());
+    @field(args, "1") = try nameToString(local, @TypeOf(args.@"1"), name);
+    if (@typeInfo(F).@"fn".params.len == 3) {
+        @field(args, "2") = local.ctx.page;
+    }
+    const ret = @call(.auto, func, args);
+    return handleIndexedReturn(T, F, false, local, ret, info, opts);
+}
+
+pub fn getEnumerator(self: *Caller, comptime T: type, func: anytype, handle: *const v8.PropertyCallbackInfo, comptime opts: CallOpts) u8 {
+    const local = &self.local;
+
+    var hs: js.HandleScope = undefined;
+    hs.init(local.isolate);
+    defer hs.deinit();
+
+    const info = PropertyCallbackInfo{ .handle = handle };
+    return _getEnumerator(T, local, func, info, opts) catch |err| {
+        handleError(T, @TypeOf(func), local, err, info, opts);
+        // not intercepted
+        return 0;
+    };
+}
+
+fn _getEnumerator(comptime T: type, local: *const Local, func: anytype, info: PropertyCallbackInfo, comptime opts: CallOpts) !u8 {
+    const F = @TypeOf(func);
+    var args: ParameterTypes(F) = undefined;
+    @field(args, "0") = try TaggedOpaque.fromJS(*T, info.getThis());
+    if (@typeInfo(F).@"fn".params.len == 2) {
+        @field(args, "1") = local.ctx.page;
+    }
+    const ret = @call(.auto, func, args);
+    return handleIndexedReturn(T, F, true, local, ret, info, opts);
+}
+
+fn handleIndexedReturn(comptime T: type, comptime F: type, comptime with_value: bool, local: *const Local, ret: anytype, info: PropertyCallbackInfo, comptime opts: CallOpts) !u8 {
+    // need to unwrap this error immediately for when opts.null_as_undefined == true
+    // and we need to compare it to null;
+    const non_error_ret = switch (@typeInfo(@TypeOf(ret))) {
+        .error_union => |eu| blk: {
+            break :blk ret catch |err| {
+                // We can't compare err == error.NotHandled if error.NotHandled
+                // isn't part of the possible error set. So we first need to check
+                // if error.NotHandled is part of the error set.
+                if (isInErrorSet(error.NotHandled, eu.error_set)) {
+                    if (err == error.NotHandled) {
+                        // not intercepted
+                        return 0;
+                    }
+                }
+                handleError(T, F, local, err, info, opts);
+                // not intercepted
+                return 0;
+            };
+        },
+        else => ret,
+    };
+
+    if (comptime with_value) {
+        info.getReturnValue().set(try local.zigValueToJs(non_error_ret, opts));
+    }
+    // intercepted
+    return 1;
+}
+
+fn isInErrorSet(err: anyerror, comptime T: type) bool {
+    inline for (@typeInfo(T).error_set.?) |e| {
+        if (err == @field(anyerror, e.name)) return true;
+    }
+    return false;
+}
+
+fn nameToString(local: *const Local, comptime T: type, name: *const v8.Name) !T {
+    const handle = @as(*const v8.String, @ptrCast(name));
+    if (T == string.String) {
+        return js.String.toSSO(.{ .local = local, .handle = handle }, false);
+    }
+    if (T == string.Global) {
+        return js.String.toSSO(.{ .local = local, .handle = handle }, true);
+    }
+    return try js.String.toSlice(.{ .local = local, .handle = handle });
+}
+
+fn handleError(comptime T: type, comptime F: type, local: *const Local, err: anyerror, info: anytype, comptime opts: CallOpts) void {
+    const isolate = local.isolate;
+
+    if (comptime IS_DEBUG and @TypeOf(info) == FunctionCallbackInfo) {
+        if (log.enabled(.js, .debug)) {
+            const DOMException = @import("../webapi/DOMException.zig");
+            if (DOMException.fromError(err) == null) {
+                // This isn't a DOMException, let's log it
+                logFunctionCallError(local, @typeName(T), @typeName(F), err, info);
+            }
+        }
+    }
+
+    const js_err: *const v8.Value = switch (err) {
+        error.TryCatchRethrow => return,
+        error.InvalidArgument => isolate.createTypeError("invalid argument"),
+        error.TypeError => isolate.createTypeError(""),
+        error.OutOfMemory => isolate.createError("out of memory"),
+        error.IllegalConstructor => isolate.createError("Illegal Contructor"),
+        else => blk: {
+            if (comptime opts.dom_exception) {
+                const DOMException = @import("../webapi/DOMException.zig");
+                if (DOMException.fromError(err)) |ex| {
+                    const value = local.zigValueToJs(ex, .{}) catch break :blk isolate.createError("internal error");
+                    break :blk value.handle;
+                }
+            }
+            break :blk isolate.createError(@errorName(err));
+        },
+    };
+
+    const js_exception = isolate.throwException(js_err);
+    info.getReturnValue().setValueHandle(js_exception);
+}
+
+// This is extracted to speed up compilation. When left inlined in handleError,
+// this can add as much as 10 seconds of compilation time.
+fn logFunctionCallError(local: *const Local, type_name: []const u8, func: []const u8, err: anyerror, info: FunctionCallbackInfo) void {
+    const args_dump = serializeFunctionArgs(local, info) catch "failed to serialize args";
+    log.debug(.js, "function call error", .{
+        .type = type_name,
+        .func = func,
+        .err = err,
+        .args = args_dump,
+        .stack = local.stackTrace() catch |err1| @errorName(err1),
+    });
+}
+
+fn serializeFunctionArgs(local: *const Local, info: FunctionCallbackInfo) ![]const u8 {
+    var buf = std.Io.Writer.Allocating.init(local.call_arena);
+
+    const separator = log.separator();
+    for (0..info.length()) |i| {
+        try buf.writer.print("{s}{d} - ", .{ separator, i + 1 });
+        const js_value = info.getArg(@intCast(i), local);
+        try local.debugValue(js_value, &buf.writer);
+    }
+    return buf.written();
+}
+
+// Takes a function, and returns a tuple for its argument. Used when we
+// @call a function
+fn ParameterTypes(comptime F: type) type {
+    const params = @typeInfo(F).@"fn".params;
+    var fields: [params.len]std.builtin.Type.StructField = undefined;
+
+    inline for (params, 0..) |param, i| {
+        fields[i] = .{
+            .name = tupleFieldName(i),
+            .type = param.type.?,
+            .default_value_ptr = null,
+            .is_comptime = false,
+            .alignment = @alignOf(param.type.?),
+        };
+    }
+
+    return @Type(.{ .@"struct" = .{
+        .layout = .auto,
+        .decls = &.{},
+        .fields = &fields,
+        .is_tuple = true,
+    } });
+}
+
+fn tupleFieldName(comptime i: usize) [:0]const u8 {
+    return switch (i) {
+        0 => "0",
+        1 => "1",
+        2 => "2",
+        3 => "3",
+        4 => "4",
+        5 => "5",
+        6 => "6",
+        7 => "7",
+        8 => "8",
+        9 => "9",
+        else => std.fmt.comptimePrint("{d}", .{i}),
+    };
+}
+
+fn isPage(comptime T: type) bool {
+    return T == *Page or T == *const Page;
+}
+
+// These wrap the raw v8 C API to provide a cleaner interface.
+pub const FunctionCallbackInfo = struct {
+    handle: *const v8.FunctionCallbackInfo,
+
+    pub fn length(self: FunctionCallbackInfo) u32 {
+        return @intCast(v8.v8__FunctionCallbackInfo__Length(self.handle));
+    }
+
+    pub fn getArg(self: FunctionCallbackInfo, index: u32, local: *const js.Local) js.Value {
+        return .{ .local = local, .handle = v8.v8__FunctionCallbackInfo__INDEX(self.handle, @intCast(index)).? };
+    }
+
+    pub fn getThis(self: FunctionCallbackInfo) *const v8.Object {
+        return v8.v8__FunctionCallbackInfo__This(self.handle).?;
+    }
+
+    pub fn getReturnValue(self: FunctionCallbackInfo) ReturnValue {
+        var rv: v8.ReturnValue = undefined;
+        v8.v8__FunctionCallbackInfo__GetReturnValue(self.handle, &rv);
+        return .{ .handle = rv };
+    }
+
+    fn isConstructCall(self: FunctionCallbackInfo) bool {
+        return v8.v8__FunctionCallbackInfo__IsConstructCall(self.handle);
+    }
+};
+
+pub const PropertyCallbackInfo = struct {
+    handle: *const v8.PropertyCallbackInfo,
+
+    pub fn getThis(self: PropertyCallbackInfo) *const v8.Object {
+        return v8.v8__PropertyCallbackInfo__This(self.handle).?;
+    }
+
+    pub fn getReturnValue(self: PropertyCallbackInfo) ReturnValue {
+        var rv: v8.ReturnValue = undefined;
+        v8.v8__PropertyCallbackInfo__GetReturnValue(self.handle, &rv);
+        return .{ .handle = rv };
+    }
+};
+
+const ReturnValue = struct {
+    handle: v8.ReturnValue,
+
+    pub fn set(self: ReturnValue, value: anytype) void {
+        const T = @TypeOf(value);
+        if (T == *const v8.Object) {
+            self.setValueHandle(@ptrCast(value));
+        } else if (T == *const v8.Value) {
+            self.setValueHandle(value);
+        } else if (T == js.Value) {
+            self.setValueHandle(value.handle);
+        } else {
+            @compileError("Unsupported type for ReturnValue.set: " ++ @typeName(T));
+        }
+    }
+
+    pub fn setValueHandle(self: ReturnValue, handle: *const v8.Value) void {
+        v8.v8__ReturnValue__Set(self.handle, handle);
+    }
+};
+
+pub const Function = struct {
+    pub const Opts = struct {
+        noop: bool = false,
+        static: bool = false,
+        dom_exception: bool = false,
+        as_typed_array: bool = false,
+        null_as_undefined: bool = false,
+        cache: ?Caching = null,
+
+        // We support two ways to cache a value directly into a v8::Object. The
+        // difference between the two is like the difference between a Map
+        // and a Struct.
+        // 1 - Using the object's internal fields. Think of this as
+        //     adding a field to the struct. It's fast, but the space is reserved
+        //     upfront for _every_ instance, whether we use it or not.
+        //
+        // 2 - Using the object's private state with a v8::Private key. Think of
+        //     this as a HashMap. It takes no memory if the cache isn't used
+        //     but has overhead when used.
+        //
+        // Consider `window.document`, (1) we have relatively few Window objects,
+        // (2) They all have a document and (3) The document is accessed _a lot_.
+        // An internal field makes sense.
+        //
+        // Consider `node.childNodes`, (1) we can have 20K+ node objects, (2)
+        // 95% of nodes will never have their .childNodes access by JavaScript.
+        // Private map lookup makes sense.
+        pub const Caching = union(enum) {
+            internal: u8,
+            private: []const u8,
+        };
+    };
+
+    pub fn call(comptime T: type, info_handle: *const v8.FunctionCallbackInfo, func: anytype, comptime opts: Opts) void {
+        const v8_isolate = v8.v8__FunctionCallbackInfo__GetIsolate(info_handle).?;
+        const v8_context = v8.v8__Isolate__GetCurrentContext(v8_isolate).?;
+
+        const ctx = Context.fromC(v8_context);
+        const info = FunctionCallbackInfo{ .handle = info_handle };
+
+        var hs: js.HandleScope = undefined;
+        hs.initWithIsolateHandle(v8_isolate);
+        defer hs.deinit();
+
+        var cache_state: CacheState = undefined;
+        if (comptime opts.cache) |cache| {
+            // This API is a bit weird. On
+            if (respondFromCache(cache, ctx, v8_context, info, &cache_state)) {
+                // Value was fetched from the cache and returned already
+                return;
+            } else {
+                // Cache miss: cache_state will have been populated
+            }
+        }
+
+        var caller: Caller = undefined;
+        caller.initWithContext(ctx, v8_context);
+        defer caller.deinit();
+
+        const js_value = _call(T, &caller.local, info, func, opts) catch |err| {
+            handleError(T, @TypeOf(func), &caller.local, err, info, .{
+                .dom_exception = opts.dom_exception,
+                .as_typed_array = opts.as_typed_array,
+                .null_as_undefined = opts.null_as_undefined,
+            });
+            return;
+        };
+
+        if (comptime opts.cache) |cache| {
+            cache_state.save(cache, js_value);
+        }
+    }
+
+    fn _call(comptime T: type, local: *const Local, info: FunctionCallbackInfo, func: anytype, comptime opts: Opts) !js.Value {
+        const F = @TypeOf(func);
+        var args: ParameterTypes(F) = undefined;
+        if (comptime opts.static) {
+            args = try getArgs(F, 0, local, info);
+        } else {
+            args = try getArgs(F, 1, local, info);
+            @field(args, "0") = try TaggedOpaque.fromJS(*T, info.getThis());
+        }
+        const res = @call(.auto, func, args);
+        const js_value = try local.zigValueToJs(res, .{
+            .dom_exception = opts.dom_exception,
+            .as_typed_array = opts.as_typed_array,
+            .null_as_undefined = opts.null_as_undefined,
+        });
+        info.getReturnValue().set(js_value);
+        return js_value;
+    }
+
+    // We can cache a value directly into the v8::Object so that our callback to fetch a property
+    // can be fast. Generally, think of it like this:
+    //   fn callback(handle: *const v8.FunctionCallbackInfo) callconv(.c) void {
+    //       const js_obj = info.getThis();
+    //       const cached_value = js_obj.getFromCache("Nodes.childNodes");
+    //       info.returnValue().set(cached_value);
+    //   }
+    //
+    // That above pseudocode snippet is largely what this respondFromCache is doing.
+    // But on miss, it's also setting the `cache_state` with all of the data it
+    // got checking the cache, so that, once we get the value from our Zig code,
+    // it's quick to store in the v8::Object for subsequent calls.
+    fn respondFromCache(comptime cache: Opts.Caching, ctx: *Context, v8_context: *const v8.Context, info: FunctionCallbackInfo, cache_state: *CacheState) bool {
+        const js_this = info.getThis();
+        const return_value = info.getReturnValue();
+
+        switch (cache) {
+            .internal => |idx| {
+                if (v8.v8__Object__GetInternalField(js_this, idx)) |cached| {
+                    // means we can't cache undefined, since we can't tell the
+                    // difference between "it isn't in the cache" and  "it's
+                    // in the cache with a valud of undefined"
+                    if (!v8.v8__Value__IsUndefined(cached)) {
+                        return_value.set(cached);
+                        return true;
+                    }
+                }
+
+                // store this so that we can quickly save the result into the cache
+                cache_state.* = .{
+                    .js_this = js_this,
+                    .v8_context = v8_context,
+                    .mode = .{ .internal = idx },
+                };
+            },
+            .private => |private_symbol| {
+                const global_handle = &@field(ctx.env.private_symbols, private_symbol).handle;
+                const private_key: *const v8.Private = v8.v8__Global__Get(global_handle, ctx.isolate.handle).?;
+                if (v8.v8__Object__GetPrivate(js_this, v8_context, private_key)) |cached| {
+                    // This means we can't cache "undefined", since we can't tell
+                    // the difference between a (a) undefined == not in the cache
+                    // and (b) undefined == the cache value.  If this becomes
+                    // important, we can check HasPrivate first. But that requires
+                    // calling HasPrivate then GetPrivate.
+                    if (!v8.v8__Value__IsUndefined(cached)) {
+                        return_value.set(cached);
+                        return true;
+                    }
+                }
+
+                // store this so that we can quickly save the result into the cache
+                cache_state.* = .{
+                    .js_this = js_this,
+                    .v8_context = v8_context,
+                    .mode = .{ .private = private_key },
+                };
+            },
+        }
+
+        // cache miss
+        return false;
+    }
+
+    const CacheState = struct {
+        js_this: *const v8.Object,
+        v8_context: *const v8.Context,
+        mode: union(enum) {
+            internal: u8,
+            private: *const v8.Private,
+        },
+
+        pub fn save(self: *const CacheState, comptime cache: Opts.Caching, js_value: js.Value) void {
+            if (comptime cache == .internal) {
+                v8.v8__Object__SetInternalField(self.js_this, self.mode.internal, js_value.handle);
+            } else {
+                var out: v8.MaybeBool = undefined;
+                v8.v8__Object__SetPrivate(self.js_this, self.v8_context, self.mode.private, js_value.handle, &out);
+            }
+        }
+    };
+};
+
+// If we call a method in javascript: cat.lives('nine');
+//
+// Then we'd expect a Zig function with 2 parameters: a self and the string.
+// In this case, offset == 1. Offset is always 1 for setters or methods.
+//
+// Offset is always 0 for constructors.
+//
+// For constructors, setters and methods, we can further increase offset + 1
+// if the first parameter is an instance of Page.
+//
+// Finally, if the JS function is called with _more_ parameters and
+// the last parameter in Zig is an array, we'll try to slurp the additional
+// parameters into the array.
+fn getArgs(comptime F: type, comptime offset: usize, local: *const Local, info: FunctionCallbackInfo) !ParameterTypes(F) {
+    var args: ParameterTypes(F) = undefined;
+
+    const params = @typeInfo(F).@"fn".params[offset..];
+    // Except for the constructor, the first parameter is always `self`
+    // This isn't something we'll bind from JS, so skip it.
+    const params_to_map = blk: {
+        if (params.len == 0) {
+            return args;
+        }
+
+        // If the last parameter is the Page, set it, and exclude it
+        // from our params slice, because we don't want to bind it to
+        // a JS argument
+        if (comptime isPage(params[params.len - 1].type.?)) {
+            @field(args, tupleFieldName(params.len - 1 + offset)) = local.ctx.page;
+            break :blk params[0 .. params.len - 1];
+        }
+
+        // we have neither a Page nor a JsObject. All params must be
+        // bound to a JavaScript value.
+        break :blk params;
+    };
+
+    if (params_to_map.len == 0) {
+        return args;
+    }
+
+    const js_parameter_count = info.length();
+    const last_js_parameter = params_to_map.len - 1;
+    var is_variadic = false;
+
+    {
+        // This is going to get complicated. If the last Zig parameter
+        // is a slice AND the corresponding javascript parameter is
+        // NOT an an array, then we'll treat it as a variadic.
+
+        const last_parameter_type = params_to_map[params_to_map.len - 1].type.?;
+        const last_parameter_type_info = @typeInfo(last_parameter_type);
+        if (last_parameter_type_info == .pointer and last_parameter_type_info.pointer.size == .slice) {
+            const slice_type = last_parameter_type_info.pointer.child;
+            const corresponding_js_value = info.getArg(@intCast(last_js_parameter), local);
+            if (corresponding_js_value.isArray() == false and corresponding_js_value.isTypedArray() == false and slice_type != u8) {
+                is_variadic = true;
+                if (js_parameter_count == 0) {
+                    @field(args, tupleFieldName(params_to_map.len + offset - 1)) = &.{};
+                } else if (js_parameter_count >= params_to_map.len) {
+                    const arr = try local.call_arena.alloc(last_parameter_type_info.pointer.child, js_parameter_count - params_to_map.len + 1);
+                    for (arr, last_js_parameter..) |*a, i| {
+                        a.* = try local.jsValueToZig(slice_type, info.getArg(@intCast(i), local));
+                    }
+                    @field(args, tupleFieldName(params_to_map.len + offset - 1)) = arr;
+                } else {
+                    @field(args, tupleFieldName(params_to_map.len + offset - 1)) = &.{};
+                }
+            }
+        }
+    }
+
+    inline for (params_to_map, 0..) |param, i| {
+        const field_index = comptime i + offset;
+        if (comptime i == params_to_map.len - 1) {
+            if (is_variadic) {
+                break;
+            }
+        }
+
+        if (comptime isPage(param.type.?)) {
+            @compileError("Page must be the last parameter (or 2nd last if there's a JsThis): " ++ @typeName(F));
+        } else if (i >= js_parameter_count) {
+            if (@typeInfo(param.type.?) != .optional) {
+                return error.InvalidArgument;
+            }
+            @field(args, tupleFieldName(field_index)) = null;
+        } else {
+            const js_val = info.getArg(@intCast(i), local);
+            @field(args, tupleFieldName(field_index)) = local.jsValueToZig(param.type.?, js_val) catch {
+                return error.InvalidArgument;
+            };
+        }
+    }
+
+    return args;
+}