From bff3d275185ea42eaf0c1e2ccab0e2c7702fea19 Mon Sep 17 00:00:00 2001
From: Muki Kiboigo <muki@muki.gg>
Date: Fri, 16 May 2025 08:51:51 -0700
Subject: [PATCH] add DOMParser

---
 src/browser/dom/dom.zig        |  2 ++
 src/browser/dom/dom_parser.zig | 47 ++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)
 create mode 100644 src/browser/dom/dom_parser.zig

diff --git a/src/browser/dom/dom.zig b/src/browser/dom/dom.zig
index f2f3aef7..2cfb521d 100644
--- a/src/browser/dom/dom.zig
+++ b/src/browser/dom/dom.zig
@@ -25,6 +25,7 @@ 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;
 
 pub const Interfaces = .{
     DOMException,
@@ -37,4 +38,5 @@ pub const Interfaces = .{
     Node.Interfaces,
     MutationObserver.Interfaces,
     IntersectionObserver.Interfaces,
+    DOMParser,
 };
diff --git a/src/browser/dom/dom_parser.zig b/src/browser/dom/dom_parser.zig
new file mode 100644
index 00000000..505d2b10
--- /dev/null
+++ b/src/browser/dom/dom_parser.zig
@@ -0,0 +1,47 @@
+// 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]" },
+    }, .{});
+}