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https://github.com/RGBCube/serenity
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LibWeb: Factor out the "stack of open elements" into its own class
This will allow us to write more expressive parsing code. :^)
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parent
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commit
53d2f4df70
5 changed files with 93 additions and 28 deletions
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@ -109,21 +109,21 @@ void HTMLDocumentParser::handle_before_html(HTMLToken& token)
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if (token.is_start_tag() && token.tag_name() == "html") {
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auto element = create_element_for(token);
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document().append_child(element);
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m_stack_of_open_elements.append(element);
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m_stack_of_open_elements.push(move(element));
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m_insertion_mode = InsertionMode::BeforeHead;
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return;
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}
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ASSERT_NOT_REACHED();
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}
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NonnullRefPtr<Node> HTMLDocumentParser::current_node()
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Element& HTMLDocumentParser::current_node()
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{
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return m_stack_of_open_elements.last();
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return m_stack_of_open_elements.current_node();
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}
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RefPtr<Node> HTMLDocumentParser::find_appropriate_place_for_inserting_node()
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{
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auto target = current_node();
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auto& target = current_node();
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if (m_foster_parenting) {
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ASSERT_NOT_REACHED();
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}
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@ -145,7 +145,7 @@ RefPtr<Element> HTMLDocumentParser::insert_html_element(HTMLToken& token)
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auto element = create_element_for(token);
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// FIXME: Check if it's possible to insert `element` at `adjusted_insertion_location`
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adjusted_insertion_location->append_child(element);
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m_stack_of_open_elements.append(element);
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m_stack_of_open_elements.push(element);
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return element;
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}
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@ -164,14 +164,14 @@ void HTMLDocumentParser::handle_in_head(HTMLToken& token)
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{
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if (token.is_start_tag() && token.tag_name() == "meta") {
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auto element = insert_html_element(token);
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m_stack_of_open_elements.take_last();
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m_stack_of_open_elements.pop();
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if (token.is_self_closing()) {
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ASSERT_NOT_REACHED();
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}
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return;
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}
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if (token.is_end_tag() && token.tag_name() == "head") {
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m_stack_of_open_elements.take_last();
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m_stack_of_open_elements.pop();
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m_insertion_mode = InsertionMode::AfterHead;
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return;
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}
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@ -243,21 +243,8 @@ AnythingElse:
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void HTMLDocumentParser::generate_implied_end_tags()
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{
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Vector<String> names { "dd", "dt", "li", "optgroup", "option", "p", "rb", "rp", "rt", "rtc" };
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while (names.contains_slow(current_node()->tag_name()))
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m_stack_of_open_elements.take_last();
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}
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bool HTMLDocumentParser::stack_of_open_elements_has_element_with_tag_name_in_scope(const FlyString& tag_name)
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{
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Vector<String> list { "applet", "caption", "html", "table", "td", "th", "marquee", "object", "template" };
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for (ssize_t i = m_stack_of_open_elements.size() - 1; i >= 0; --i) {
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auto& node = m_stack_of_open_elements.at(i);
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if (node.tag_name() == tag_name)
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return true;
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if (list.contains_slow(node.tag_name()))
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return false;
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}
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ASSERT_NOT_REACHED();
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while (names.contains_slow(current_node().tag_name()))
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m_stack_of_open_elements.pop();
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}
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void HTMLDocumentParser::handle_after_body(HTMLToken& token)
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@ -284,7 +271,7 @@ void HTMLDocumentParser::handle_after_after_body(HTMLToken& token)
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void HTMLDocumentParser::handle_in_body(HTMLToken& token)
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{
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if (token.is_end_tag() && token.tag_name() == "body") {
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if (!stack_of_open_elements_has_element_with_tag_name_in_scope("body")) {
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if (!m_stack_of_open_elements.has_in_scope("body")) {
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ASSERT_NOT_REACHED();
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}
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@ -310,17 +297,17 @@ void HTMLDocumentParser::handle_in_body(HTMLToken& token)
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if (token.is_end_tag() && names.contains_slow(token.tag_name())) {
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// FIXME: If the stack of open elements has a p element in button scope, then close a p element.
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if (!stack_of_open_elements_has_element_with_tag_name_in_scope(token.tag_name())) {
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if (!m_stack_of_open_elements.has_in_scope(token.tag_name())) {
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ASSERT_NOT_REACHED();
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}
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generate_implied_end_tags();
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if (current_node()->tag_name() != token.tag_name()) {
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if (current_node().tag_name() != token.tag_name()) {
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ASSERT_NOT_REACHED();
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}
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m_stack_of_open_elements.take_last();
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m_stack_of_open_elements.pop();
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return;
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}
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}
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