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https://github.com/LadybirdBrowser/ladybird.git
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LibWeb: Make document.write() work while document is parsing
This necessitated making HTMLParser ref-counted, and having it register itself with Document when created. That makes it possible for scripts to add new input at the current parser insertion point. There is now a reference cycle between Document and HTMLParser. This cycle is explicitly broken by calling Document::detach_parser() at the end of HTMLParser::run(). This is a huge progression on ACID3, from 31% to 49%! :^)
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parent
bb1f26c149
commit
8b2499b112
Notes:
sideshowbarker
2024-07-17 18:25:04 +09:00
Author: https://github.com/awesomekling Commit: https://github.com/SerenityOS/serenity/commit/8b2499b112
@ -150,10 +150,10 @@ JS_DEFINE_NATIVE_FUNCTION(TestWebGlobalObject::wait_for_page_to_load)
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loader.load_sync(
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request,
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[&](auto data, auto&, auto) {
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Web::HTML::HTMLParser parser(document, data, "utf-8");
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auto parser = Web::HTML::HTMLParser::create(document, data, "utf-8");
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// Now parse the HTML page.
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parser.run(next_page_to_load.value());
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g_page_view->set_document(&parser.document());
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parser->run(next_page_to_load.value());
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g_page_view->set_document(&parser->document());
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// Note: Unhandled exceptions are just dropped here.
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// Run the "after" hooks
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@ -256,7 +256,7 @@ ExceptionOr<Document*> Document::open(String const&, String const&)
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set_quirks_mode(QuirksMode::No);
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// 16. Create a new HTML parser and associate it with document. This is a script-created parser (meaning that it can be closed by the document.open() and document.close() methods, and that the tokenizer will wait for an explicit call to document.close() before emitting an end-of-file token). The encoding confidence is irrelevant.
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m_parser = make<HTML::HTMLParser>(*this);
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m_parser = HTML::HTMLParser::create_for_scripting(*this);
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// 17. Set the insertion point to point at just before the end of the input stream (which at this point will be empty).
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m_parser->tokenizer().update_insertion_point();
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@ -1324,4 +1324,14 @@ bool Document::has_focus() const
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return true;
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}
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void Document::set_parser(Badge<HTML::HTMLParser>, HTML::HTMLParser& parser)
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{
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m_parser = parser;
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}
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void Document::detach_parser(Badge<HTML::HTMLParser>)
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{
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m_parser = nullptr;
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}
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}
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@ -313,6 +313,9 @@ public:
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bool has_focus() const;
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void set_parser(Badge<HTML::HTMLParser>, HTML::HTMLParser&);
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void detach_parser(Badge<HTML::HTMLParser>);
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private:
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explicit Document(const AK::URL&);
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@ -358,7 +361,7 @@ private:
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RefPtr<Core::Timer> m_style_update_timer;
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RefPtr<Core::Timer> m_layout_update_timer;
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OwnPtr<HTML::HTMLParser> m_parser;
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RefPtr<HTML::HTMLParser> m_parser;
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bool m_active_parser_was_aborted { false };
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String m_source;
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@ -34,11 +34,11 @@ NonnullRefPtr<DOM::Document> DOMParser::parse_from_string(String const& string,
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// 2. Create an HTML parser parser, associated with document.
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// 3. Place string into the input stream for parser. The encoding confidence is irrelevant.
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// FIXME: We don't have the concept of encoding confidence yet.
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HTMLParser parser(document, string, "UTF-8");
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auto parser = HTMLParser::create(document, string, "UTF-8");
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// 4. Start parser and let it run until it has consumed all the characters just inserted into the input stream.
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// FIXME: This is to match the default URL. Instead, pass in this's relevant global object's associated Document's URL.
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parser.run("about:blank");
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parser->run("about:blank");
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} else {
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// -> Otherwise
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// FIXME: 1. Create an XML parser parse, associated with document, and with XML scripting support disabled.
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@ -121,8 +121,8 @@ static bool is_html_integration_point(DOM::Element const& element)
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RefPtr<DOM::Document> parse_html_document(StringView data, const AK::URL& url, const String& encoding)
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{
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auto document = DOM::Document::create(url);
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HTMLParser parser(document, data, encoding);
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parser.run(url);
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auto parser = HTMLParser::create(document, data, encoding);
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parser->run(url);
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return document;
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}
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@ -131,6 +131,7 @@ HTMLParser::HTMLParser(DOM::Document& document, StringView input, const String&
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, m_document(document)
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{
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m_tokenizer.set_parser({}, *this);
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m_document->set_parser({}, *this);
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m_document->set_should_invalidate_styles_on_attribute_changes(false);
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auto standardized_encoding = TextCodec::get_standardized_encoding(encoding);
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VERIFY(standardized_encoding.has_value());
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@ -140,6 +141,7 @@ HTMLParser::HTMLParser(DOM::Document& document, StringView input, const String&
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HTMLParser::HTMLParser(DOM::Document& document)
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: m_document(document)
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{
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m_document->set_parser({}, *this);
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m_tokenizer.set_parser({}, *this);
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}
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@ -201,6 +203,7 @@ void HTMLParser::run(const AK::URL& url)
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m_document->set_source(m_tokenizer.source());
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run();
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the_end();
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m_document->detach_parser({});
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}
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// https://html.spec.whatwg.org/multipage/parsing.html#the-end
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@ -3180,44 +3183,44 @@ DOM::Document& HTMLParser::document()
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NonnullRefPtrVector<DOM::Node> HTMLParser::parse_html_fragment(DOM::Element& context_element, StringView markup)
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{
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auto temp_document = DOM::Document::create();
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HTMLParser parser(*temp_document, markup, "utf-8");
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parser.m_context_element = context_element;
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parser.m_parsing_fragment = true;
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parser.document().set_quirks_mode(context_element.document().mode());
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auto parser = HTMLParser::create(*temp_document, markup, "utf-8");
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parser->m_context_element = context_element;
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parser->m_parsing_fragment = true;
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parser->document().set_quirks_mode(context_element.document().mode());
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if (context_element.local_name().is_one_of(HTML::TagNames::title, HTML::TagNames::textarea)) {
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parser.m_tokenizer.switch_to({}, HTMLTokenizer::State::RCDATA);
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parser->m_tokenizer.switch_to({}, HTMLTokenizer::State::RCDATA);
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} else if (context_element.local_name().is_one_of(HTML::TagNames::style, HTML::TagNames::xmp, HTML::TagNames::iframe, HTML::TagNames::noembed, HTML::TagNames::noframes)) {
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parser.m_tokenizer.switch_to({}, HTMLTokenizer::State::RAWTEXT);
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parser->m_tokenizer.switch_to({}, HTMLTokenizer::State::RAWTEXT);
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} else if (context_element.local_name().is_one_of(HTML::TagNames::script)) {
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parser.m_tokenizer.switch_to({}, HTMLTokenizer::State::ScriptData);
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parser->m_tokenizer.switch_to({}, HTMLTokenizer::State::ScriptData);
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} else if (context_element.local_name().is_one_of(HTML::TagNames::noscript)) {
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if (context_element.document().is_scripting_enabled())
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parser.m_tokenizer.switch_to({}, HTMLTokenizer::State::RAWTEXT);
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parser->m_tokenizer.switch_to({}, HTMLTokenizer::State::RAWTEXT);
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} else if (context_element.local_name().is_one_of(HTML::TagNames::plaintext)) {
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parser.m_tokenizer.switch_to({}, HTMLTokenizer::State::PLAINTEXT);
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parser->m_tokenizer.switch_to({}, HTMLTokenizer::State::PLAINTEXT);
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}
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auto root = create_element(context_element.document(), HTML::TagNames::html, Namespace::HTML);
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parser.document().append_child(root);
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parser.m_stack_of_open_elements.push(root);
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parser->document().append_child(root);
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parser->m_stack_of_open_elements.push(root);
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if (context_element.local_name() == HTML::TagNames::template_) {
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parser.m_stack_of_template_insertion_modes.append(InsertionMode::InTemplate);
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parser->m_stack_of_template_insertion_modes.append(InsertionMode::InTemplate);
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}
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// FIXME: Create a start tag token whose name is the local name of context and whose attributes are the attributes of context.
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parser.reset_the_insertion_mode_appropriately();
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parser->reset_the_insertion_mode_appropriately();
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for (auto* form_candidate = &context_element; form_candidate; form_candidate = form_candidate->parent_element()) {
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if (is<HTMLFormElement>(*form_candidate)) {
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parser.m_form_element = verify_cast<HTMLFormElement>(*form_candidate);
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parser->m_form_element = verify_cast<HTMLFormElement>(*form_candidate);
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break;
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}
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}
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parser.run(context_element.document().url());
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parser->run(context_element.document().url());
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NonnullRefPtrVector<DOM::Node> children;
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while (RefPtr<DOM::Node> child = root->first_child()) {
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@ -3228,13 +3231,23 @@ NonnullRefPtrVector<DOM::Node> HTMLParser::parse_html_fragment(DOM::Element& con
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return children;
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}
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NonnullOwnPtr<HTMLParser> HTMLParser::create_with_uncertain_encoding(DOM::Document& document, const ByteBuffer& input)
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NonnullRefPtr<HTMLParser> HTMLParser::create_for_scripting(DOM::Document& document)
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{
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return adopt_ref(*new HTMLParser(document));
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}
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NonnullRefPtr<HTMLParser> HTMLParser::create_with_uncertain_encoding(DOM::Document& document, const ByteBuffer& input)
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{
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if (document.has_encoding())
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return make<HTMLParser>(document, input, document.encoding().value());
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return adopt_ref(*new HTMLParser(document, input, document.encoding().value()));
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auto encoding = run_encoding_sniffing_algorithm(document, input);
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dbgln("The encoding sniffing algorithm returned encoding '{}'", encoding);
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return make<HTMLParser>(document, input, encoding);
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return adopt_ref(*new HTMLParser(document, input, encoding));
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}
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NonnullRefPtr<HTMLParser> HTMLParser::create(DOM::Document& document, StringView input, String const& encoding)
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{
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return adopt_ref(*new HTMLParser(document, input, encoding));
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}
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// https://html.spec.whatwg.org/multipage/parsing.html#html-fragment-serialisation-algorithm
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@ -41,15 +41,15 @@ namespace Web::HTML {
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RefPtr<DOM::Document> parse_html_document(StringView, const AK::URL&, const String& encoding);
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class HTMLParser {
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class HTMLParser : public RefCounted<HTMLParser> {
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friend class HTMLTokenizer;
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public:
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HTMLParser(DOM::Document&, StringView input, const String& encoding);
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HTMLParser(DOM::Document&);
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~HTMLParser();
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static NonnullOwnPtr<HTMLParser> create_with_uncertain_encoding(DOM::Document&, const ByteBuffer& input);
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static NonnullRefPtr<HTMLParser> create_for_scripting(DOM::Document&);
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static NonnullRefPtr<HTMLParser> create_with_uncertain_encoding(DOM::Document&, ByteBuffer const& input);
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static NonnullRefPtr<HTMLParser> create(DOM::Document&, StringView input, String const& encoding);
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void run();
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void run(const AK::URL&);
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@ -76,6 +76,9 @@ public:
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size_t script_nesting_level() const { return m_script_nesting_level; }
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private:
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HTMLParser(DOM::Document&, StringView input, const String& encoding);
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HTMLParser(DOM::Document&);
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const char* insertion_mode_name() const;
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DOM::QuirksMode which_quirks_mode(const HTMLToken&) const;
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@ -46,8 +46,8 @@ static bool build_markdown_document(DOM::Document& document, const ByteBuffer& d
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if (!markdown_document)
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return false;
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HTML::HTMLParser parser(document, markdown_document->render_to_html(), "utf-8");
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parser.run(document.url());
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auto parser = HTML::HTMLParser::create(document, markdown_document->render_to_html(), "utf-8");
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parser->run(document.url());
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return true;
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}
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@ -116,8 +116,8 @@ static bool build_gemini_document(DOM::Document& document, const ByteBuffer& dat
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dbgln_if(GEMINI_DEBUG, "Gemini data:\n\"\"\"{}\"\"\"", gemini_data);
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dbgln_if(GEMINI_DEBUG, "Converted to HTML:\n\"\"\"{}\"\"\"", html_data);
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HTML::HTMLParser parser(document, html_data, "utf-8");
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parser.run(document.url());
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auto parser = HTML::HTMLParser::create(document, html_data, "utf-8");
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parser->run(document.url());
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return true;
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}
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@ -226,9 +226,9 @@ bool FrameLoader::load(const AK::URL& url, Type type)
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void FrameLoader::load_html(StringView html, const AK::URL& url)
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{
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auto document = DOM::Document::create(url);
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HTML::HTMLParser parser(document, html, "utf-8");
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parser.run(url);
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browsing_context().set_active_document(&parser.document());
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auto parser = HTML::HTMLParser::create(document, html, "utf-8");
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parser->run(url);
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browsing_context().set_active_document(&parser->document());
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}
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// FIXME: Use an actual templating engine (our own one when it's built, preferably
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