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interactive: optimize getTextContent single-chunk path

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Avoids an unnecessary double allocation and maintains a zero-copy fast path for single-chunk text extraction.
This commit is contained in:
Adrià Arrufat
2026-03-11 15:27:12 +09:00
parent 2e6dd3edfe
commit 5329d05005
1 changed files with 17 additions and 5 deletions
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22
src/browser/interactive.zig
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@@ -331,7 +331,8 @@ fn getAccessibleName(el: *Element, arena: Allocator) !?[]const u8 {
fn getTextContent(node: *Node, arena: Allocator) !?[]const u8 {
var tw: TreeWalker.FullExcludeSelf = .init(node, .{});
var chunks: std.ArrayList([]const u8) = .empty;
var arr: std.ArrayList(u8) = .empty;
var single_chunk: ?[]const u8 = null;
while (tw.next()) |child| {
// Skip text inside script/style elements.
@@ -348,16 +349,27 @@ fn getTextContent(node: *Node, arena: Allocator) !?[]const u8 {
if (cdata.is(Node.CData.Text)) |text| {
const content = std.mem.trim(u8, text.getWholeText(), &std.ascii.whitespace);
if (content.len > 0) {
try chunks.append(arena, content);
if (single_chunk == null and arr.items.len == 0) {
single_chunk = content;
} else {
if (single_chunk) |sc| {
try arr.appendSlice(arena, sc);
try arr.append(arena, ' ');
single_chunk = null;
}
try arr.appendSlice(arena, content);
try arr.append(arena, ' ');
}
}
}
}
}
if (chunks.items.len == 0) return null;
if (chunks.items.len == 1) return chunks.items[0];
if (single_chunk) |sc| return sc;
if (arr.items.len == 0) return null;
return try std.mem.join(arena, " ", chunks.items);
// strip out trailing space
return arr.items[0 .. arr.items.len - 1];
}
fn isDisabled(el: *Element) bool {
if (el.getAttributeSafe(comptime .wrap("disabled")) != null) return true;