SemanticTree: use StaticStringMap for structural role check

Improves performance and readability of isStructuralRole. Also includes minor syntax cleanup in AXNode.

src/SemanticTree.zig

@@ -367,21 +367,22 @@ const JsonVisitor = struct {
 };
 
 fn isStructuralRole(role: []const u8) bool {
-    // zig fmt: off
+    const structural_roles = std.StaticStringMap(void).initComptime(.{
-    return std.mem.eql(u8, role, "none") or
+        .{ "none", {} },
-        std.mem.eql(u8, role, "generic") or
+        .{ "generic", {} },
-        std.mem.eql(u8, role, "InlineTextBox") or
+        .{ "InlineTextBox", {} },
-        std.mem.eql(u8, role, "banner") or
+        .{ "banner", {} },
-        std.mem.eql(u8, role, "navigation") or
+        .{ "navigation", {} },
-        std.mem.eql(u8, role, "main") or
+        .{ "main", {} },
-        std.mem.eql(u8, role, "list") or
+        .{ "list", {} },
-        std.mem.eql(u8, role, "listitem") or
+        .{ "listitem", {} },
-        std.mem.eql(u8, role, "table") or
+        .{ "table", {} },
-        std.mem.eql(u8, role, "rowgroup") or
+        .{ "rowgroup", {} },
-        std.mem.eql(u8, role, "row") or
+        .{ "row", {} },
-        std.mem.eql(u8, role, "cell") or
+        .{ "cell", {} },
-        std.mem.eql(u8, role, "region");
+        .{ "region", {} },
-    // zig fmt: on
+    });
+    return structural_roles.has(role);
 }
 
 const TextVisitor = struct {

src/cdp/AXNode.zig

@@ -767,7 +767,7 @@ pub fn getName(self: AXNode, page: *Page, allocator: std.mem.Allocator) !?[]cons
         pub fn endWriteRaw(_: @This()) void {}
     };
 
-    const w = TextCaptureWriter{ .aw = &aw, .writer = &aw.writer };
+    const w: TextCaptureWriter = .{ .aw = &aw, .writer = &aw.writer };
 
     const source = try self.writeName(w, page);
     if (source != null) {