LibWeb: Move the HTML parser into HTML/Parser/

Author: https://github.com/awesomekling Commit: cc4109c03b
2025-05-01 08:48:49 +00:00 · 2020-07-28 19:18:23 +02:00 · 2020-07-28 19:18:23 +02:00 · cc4109c03b · 2024-07-19 04:29:52 +09:00
commit cc4109c03b
parent a296020e03
18 changed files with 32 additions and 42 deletions
--- a/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
+++ b/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
@ -0,0 +1,159 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibWeb/DOM/Element.h>
+#include <LibWeb/HTML/Parser/HTMLDocumentParser.h>
+#include <LibWeb/HTML/Parser/StackOfOpenElements.h>
+
+namespace Web::HTML {
+
+static Vector<FlyString> s_base_list { "applet", "caption", "html", "table", "td", "th", "marquee", "object", "template" };
+
+StackOfOpenElements::~StackOfOpenElements()
+{
+}
+
+bool StackOfOpenElements::has_in_scope_impl(const FlyString& tag_name, const Vector<FlyString>& list) const
+{
+    for (ssize_t i = m_elements.size() - 1; i >= 0; --i) {
+        auto& node = m_elements.at(i);
+        if (node.local_name() == tag_name)
+            return true;
+        if (list.contains_slow(node.local_name()))
+            return false;
+    }
+    ASSERT_NOT_REACHED();
+}
+
+bool StackOfOpenElements::has_in_scope(const FlyString& tag_name) const
+{
+    return has_in_scope_impl(tag_name, s_base_list);
+}
+
+bool StackOfOpenElements::has_in_scope_impl(const DOM::Element& target_node, const Vector<FlyString>& list) const
+{
+    for (ssize_t i = m_elements.size() - 1; i >= 0; --i) {
+        auto& node = m_elements.at(i);
+        if (&node == &target_node)
+            return true;
+        if (list.contains_slow(node.local_name()))
+            return false;
+    }
+    ASSERT_NOT_REACHED();
+}
+
+bool StackOfOpenElements::has_in_scope(const DOM::Element& target_node) const
+{
+    return has_in_scope_impl(target_node, s_base_list);
+}
+
+bool StackOfOpenElements::has_in_button_scope(const FlyString& tag_name) const
+{
+    auto list = s_base_list;
+    list.append("button");
+    return has_in_scope_impl(tag_name, list);
+}
+
+bool StackOfOpenElements::has_in_table_scope(const FlyString& tag_name) const
+{
+    return has_in_scope_impl(tag_name, { "html", "table", "template" });
+}
+
+bool StackOfOpenElements::has_in_list_item_scope(const FlyString& tag_name) const
+{
+    auto list = s_base_list;
+    list.append("ol");
+    list.append("ul");
+    return has_in_scope_impl(tag_name, list);
+}
+
+bool StackOfOpenElements::has_in_select_scope(const FlyString& tag_name) const
+{
+    return has_in_scope_impl(tag_name, { "option", "optgroup" });
+}
+
+bool StackOfOpenElements::contains(const DOM::Element& element) const
+{
+    for (auto& element_on_stack : m_elements) {
+        if (&element == &element_on_stack)
+            return true;
+    }
+    return false;
+}
+
+bool StackOfOpenElements::contains(const FlyString& tag_name) const
+{
+    for (auto& element_on_stack : m_elements) {
+        if (element_on_stack.local_name() == tag_name)
+            return true;
+    }
+    return false;
+}
+
+void StackOfOpenElements::pop_until_an_element_with_tag_name_has_been_popped(const FlyString& tag_name)
+{
+    while (m_elements.last().local_name() != tag_name)
+        pop();
+    pop();
+}
+
+DOM::Element* StackOfOpenElements::topmost_special_node_below(const DOM::Element& formatting_element)
+{
+    DOM::Element* found_element = nullptr;
+    for (ssize_t i = m_elements.size() - 1; i >= 0; --i) {
+        auto& element = m_elements[i];
+        if (&element == &formatting_element)
+            break;
+        if (HTMLDocumentParser::is_special_tag(element.local_name()))
+            found_element = &element;
+    }
+    return found_element;
+}
+
+DOM::Element* StackOfOpenElements::last_element_with_tag_name(const FlyString& tag_name)
+{
+    for (ssize_t i = m_elements.size() - 1; i >= 0; --i) {
+        auto& element = m_elements[i];
+        if (element.local_name() == tag_name)
+            return &element;
+    }
+    return nullptr;
+}
+
+DOM::Element* StackOfOpenElements::element_before(const DOM::Element& target)
+{
+    bool found_target = false;
+    for (ssize_t i = m_elements.size() - 1; i >= 0; --i) {
+        auto& element = m_elements[i];
+        if (&element == &target) {
+            found_target = true;
+        } else if (found_target)
+            return &element;
+    }
+    return nullptr;
+}
+
+}