public/browser
1
0
Fork 0
mirror of https://github.com/lightpanda-io/browser.git synced 2026-03-22 04:34:44 +00:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

Merge branch 'main' into semantic-tree

Browse Source
This commit is contained in:
Adrià Arrufat
2026-03-09 10:16:31 +09:00
parent 4ba40f2295 0227afffc8
commit 9cd5afe5b6
8 changed files with 66 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/mcp/Server.zig
View File

@@ -18,7 +18,6 @@ http_client: *HttpClient,
notification: *lp.Notification,
browser: lp.Browser,
session: *lp.Session,
page: *lp.Page,
node_registry: CDPNode.Registry,
writer: *std.io.Writer,
@@ -47,13 +46,10 @@ pub fn init(allocator: std.mem.Allocator, app: *App, writer: *std.io.Writer) !*S
.http_client = http_client,
.notification = notification,
.session = undefined,
.page = undefined,
.node_registry = CDPNode.Registry.init(allocator),
};
self.session = try self.browser.newSession(self.notification);
self.page = try self.session.createPage();
return self;
}
@@ -91,7 +87,7 @@ pub fn sendResult(self: *Self, id: std.json.Value, result: anytype) !void {
}
pub fn sendError(self: *Self, id: std.json.Value, code: protocol.ErrorCode, message: []const u8) !void {
try self.sendResponse(protocol.Response{
try self.sendResponse(.{
.id = id,
.@"error" = protocol.Error{
.code = @intFromEnum(code),

1
src/mcp/protocol.zig
View File

@@ -26,6 +26,7 @@ pub const ErrorCode = enum(i64) {
MethodNotFound = -32601,
InvalidParams = -32602,
InternalError = -32603,
PageNotLoaded = -32604,
};
pub const Notification = struct {

27
src/mcp/resources.zig
View File

@@ -37,7 +37,7 @@ const ResourceStreamingResult = struct {
},
const StreamingText = struct {
server: *Server,
page: *lp.Page,
format: enum { html, markdown },
pub fn jsonStringify(self: @This(), jw: *std.json.Stringify) !void {
@@ -45,10 +45,10 @@ const ResourceStreamingResult = struct {
try jw.writer.writeByte('"');
var escaped = protocol.JsonEscapingWriter.init(jw.writer);
switch (self.format) {
.html => lp.dump.root(self.server.page.document, .{}, &escaped.writer, self.server.page) catch |err| {
.html => lp.dump.root(self.page.document, .{}, &escaped.writer, self.page) catch |err| {
log.err(.mcp, "html dump failed", .{ .err = err });
},
.markdown => lp.markdown.dump(self.server.page.document.asNode(), .{}, &escaped.writer, self.server.page) catch |err| {
.markdown => lp.markdown.dump(self.page.document.asNode(), .{}, &escaped.writer, self.page) catch |err| {
log.err(.mcp, "markdown dump failed", .{ .err = err });
},
}
@@ -69,16 +69,21 @@ const resource_map = std.StaticStringMap(ResourceUri).initComptime(.{
});
pub fn handleRead(server: *Server, arena: std.mem.Allocator, req: protocol.Request) !void {
if (req.params == null) {
return server.sendError(req.id.?, .InvalidParams, "Missing params");
if (req.params == null or req.id == null) {
return server.sendError(req.id orelse .{ .integer = -1 }, .InvalidParams, "Missing params");
}
const req_id = req.id.?;
const params = std.json.parseFromValueLeaky(ReadParams, arena, req.params.?, .{ .ignore_unknown_fields = true }) catch {
return server.sendError(req.id.?, .InvalidParams, "Invalid params");
return server.sendError(req_id, .InvalidParams, "Invalid params");
};
const uri = resource_map.get(params.uri) orelse {
return server.sendError(req.id.?, .InvalidRequest, "Resource not found");
return server.sendError(req_id, .InvalidRequest, "Resource not found");
};
const page = server.session.currentPage() orelse {
return server.sendError(req_id, .PageNotLoaded, "Page not loaded");
};
switch (uri) {
@@ -87,20 +92,20 @@ pub fn handleRead(server: *Server, arena: std.mem.Allocator, req: protocol.Reque
.contents = &.{.{
.uri = params.uri,
.mimeType = "text/html",
.text = .{ .server = server, .format = .html },
.text = .{ .page = page, .format = .html },
}},
};
try server.sendResult(req.id.?, result);
try server.sendResult(req_id, result);
},
.@"mcp://page/markdown" => {
const result: ResourceStreamingResult = .{
.contents = &.{.{
.uri = params.uri,
.mimeType = "text/markdown",
.text = .{ .server = server, .format = .markdown },
.text = .{ .page = page, .format = .markdown },
}},
};
try server.sendResult(req.id.?, result);
try server.sendResult(req_id, result);
},
}
}

60
src/mcp/tools.zig
View File

@@ -8,6 +8,7 @@ const Element = @import("../browser/webapi/Element.zig");
const Selector = @import("../browser/webapi/selector/Selector.zig");
const protocol = @import("protocol.zig");
const Server = @import("Server.zig");
const CDPNode = @import("../cdp/Node.zig");
pub const tool_list = [_]protocol.Tool{
.{
@@ -90,17 +91,18 @@ const EvaluateParams = struct {
};
const ToolStreamingText = struct {
server: *Server,
page: *lp.Page,
action: enum { markdown, links, semantic_tree },
arena: std.mem.Allocator,
registry: ?*CDPNode.Registry = null,
arena: ?std.mem.Allocator = null,
pub fn jsonStringify(self: @This(), jw: *std.json.Stringify) !void {
switch (self.action) {
.markdown => {
try jw.beginWriteRaw();
try jw.writer.writeByte('"');
var escaped = protocol.JsonEscapingWriter.init(jw.writer);
lp.markdown.dump(self.server.page.document.asNode(), .{}, &escaped.writer, self.server.page) catch |err| {
var escaped: protocol.JsonEscapingWriter = .init(jw.writer);
lp.markdown.dump(self.page.document.asNode(), .{}, &escaped.writer, self.page) catch |err| {
log.err(.mcp, "markdown dump failed", .{ .err = err });
};
try jw.writer.writeByte('"');
@@ -109,14 +111,14 @@ const ToolStreamingText = struct {
.links => {
try jw.beginWriteRaw();
try jw.writer.writeByte('"');
var escaped = protocol.JsonEscapingWriter.init(jw.writer);
var escaped: protocol.JsonEscapingWriter = .init(jw.writer);
const w = &escaped.writer;
if (Selector.querySelectorAll(self.server.page.document.asNode(), "a[href]", self.server.page)) |list| {
defer list.deinit(self.server.page);
if (Selector.querySelectorAll(self.page.document.asNode(), "a[href]", self.page)) |list| {
defer list.deinit(self.page);
var first = true;
for (list._nodes) |node| {
if (node.is(Element.Html.Anchor)) |anchor| {
const href = anchor.getHref(self.server.page) catch |err| {
const href = anchor.getHref(self.page) catch |err| {
log.err(.mcp, "resolve href failed", .{ .err = err });
continue;
};
@@ -138,13 +140,13 @@ const ToolStreamingText = struct {
// Return the highly compressed Stagehand-style text format for maximum token efficiency
try jw.beginWriteRaw();
try jw.writer.writeByte('"');
var escaped = protocol.JsonEscapingWriter.init(jw.writer);
var escaped: protocol.JsonEscapingWriter = .init(jw.writer);
const st = lp.SemanticTree{
.dom_node = self.server.page.document.asNode(),
.registry = &self.server.node_registry,
.page = self.server.page,
.arena = self.arena,
.dom_node = self.page.document.asNode(),
.registry = self.registry.?,
.page = self.page,
.arena = self.arena.?,
};
st.textStringify(&escaped.writer) catch |err| {
@@ -177,8 +179,8 @@ const tool_map = std.StaticStringMap(ToolAction).initComptime(.{
});
pub fn handleCall(server: *Server, arena: std.mem.Allocator, req: protocol.Request) !void {
if (req.params == null) {
return server.sendError(req.id.?, .InvalidParams, "Missing params");
if (req.params == null or req.id == null) {
return server.sendError(req.id orelse .{ .integer = -1 }, .InvalidParams, "Missing params");
}
const CallParams = struct {
@@ -222,9 +224,12 @@ fn handleMarkdown(server: *Server, arena: std.mem.Allocator, id: std.json.Value,
}
} else |_| {}
}
const page = server.session.currentPage() orelse {
return server.sendError(id, .PageNotLoaded, "Page not loaded");
};
const content = [_]protocol.TextContent(ToolStreamingText){.{
.text = .{ .server = server, .action = .markdown, .arena = arena },
.text = .{ .page = page, .action = .markdown },
}};
try server.sendResult(id, protocol.CallToolResult(ToolStreamingText){ .content = &content });
}
@@ -240,9 +245,12 @@ fn handleLinks(server: *Server, arena: std.mem.Allocator, id: std.json.Value, ar
}
} else |_| {}
}
const page = server.session.currentPage() orelse {
return server.sendError(id, .PageNotLoaded, "Page not loaded");
};
const content = [_]protocol.TextContent(ToolStreamingText){.{
.text = .{ .server = server, .action = .links, .arena = arena },
.text = .{ .page = page, .action = .links },
}};
try server.sendResult(id, protocol.CallToolResult(ToolStreamingText){ .content = &content });
}
@@ -258,9 +266,12 @@ fn handleSemanticTree(server: *Server, arena: std.mem.Allocator, id: std.json.Va
}
} else |_| {}
}
const page = server.session.currentPage() orelse {
return server.sendError(id, .PageNotLoaded, "Page not loaded");
};
const content = [_]protocol.TextContent(ToolStreamingText){.{
.text = .{ .server = server, .action = .semantic_tree, .arena = arena },
.text = .{ .page = page, .action = .semantic_tree, .registry = &server.node_registry, .arena = arena },
}};
try server.sendResult(id, protocol.CallToolResult(ToolStreamingText){ .content = &content });
}
@@ -271,9 +282,12 @@ fn handleEvaluate(server: *Server, arena: std.mem.Allocator, id: std.json.Value,
if (args.url) |url| {
try performGoto(server, url, id);
}
const page = server.session.currentPage() orelse {
return server.sendError(id, .PageNotLoaded, "Page not loaded");
};
var ls: js.Local.Scope = undefined;
server.page.js.localScope(&ls);
page.js.localScope(&ls);
defer ls.deinit();
var try_catch: js.TryCatch = undefined;
@@ -308,7 +322,12 @@ fn parseArguments(comptime T: type, arena: std.mem.Allocator, arguments: ?std.js
}
fn performGoto(server: *Server, url: [:0]const u8, id: std.json.Value) !void {
_ = server.page.navigate(url, .{
const session = server.session;
if (session.page != null) {
session.removePage();
}
const page = try session.createPage();
page.navigate(url, .{
.reason = .address_bar,
.kind = .{ .push = null },
}) catch {
@@ -332,6 +351,7 @@ test "MCP - evaluate error reporting" {
var server = try Server.init(allocator, app, &out_alloc.writer);
defer server.deinit();
_ = try server.session.createPage();
const aa = testing.arena_allocator;