Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89 Commit: 93712b24bf Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256 Reviewed-by: https://github.com/sideshowbarker
2025-08-02 14:19:48 +00:00 · 2024-11-09 12:25:08 -05:00 · 2024-11-09 12:25:08 -05:00 · 93712b24bf · 2024-11-10 11:51:52 +00:00
commit 93712b24bf
parent 950e819ee7
4547 changed files with 104 additions and 113 deletions
--- a/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
+++ b/Libraries/LibWeb/HTML/Parser/StackOfOpenElements.cpp
@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2020-2022, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/DOM/Element.h>
+#include <LibWeb/HTML/Parser/HTMLParser.h>
+#include <LibWeb/HTML/Parser/StackOfOpenElements.h>
+#include <LibWeb/Namespace.h>
+
+namespace Web::HTML {
+
+static Vector<FlyString> s_base_list { "applet"_fly_string, "caption"_fly_string, "html"_fly_string, "table"_fly_string, "td"_fly_string, "th"_fly_string, "marquee"_fly_string, "object"_fly_string, "template"_fly_string };
+
+StackOfOpenElements::~StackOfOpenElements() = default;
+
+void StackOfOpenElements::visit_edges(JS::Cell::Visitor& visitor)
+{
+    visitor.visit(m_elements);
+}
+
+bool StackOfOpenElements::has_in_scope_impl(FlyString const& tag_name, Vector<FlyString> const& list) const
+{
+    for (auto const& element : m_elements.in_reverse()) {
+        if (element->local_name() == tag_name)
+            return true;
+        if (list.contains_slow(element->local_name()))
+            return false;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+bool StackOfOpenElements::has_in_scope(FlyString const& tag_name) const
+{
+    return has_in_scope_impl(tag_name, s_base_list);
+}
+
+bool StackOfOpenElements::has_in_scope_impl(const DOM::Element& target_node, Vector<FlyString> const& list) const
+{
+    for (auto& element : m_elements.in_reverse()) {
+        if (element.ptr() == &target_node)
+            return true;
+        if (list.contains_slow(element->local_name()))
+            return false;
+    }
+    VERIFY_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(FlyString const& tag_name) const
+{
+    auto list = s_base_list;
+    list.append("button"_fly_string);
+    return has_in_scope_impl(tag_name, list);
+}
+
+bool StackOfOpenElements::has_in_table_scope(FlyString const& tag_name) const
+{
+    return has_in_scope_impl(tag_name, { "html"_fly_string, "table"_fly_string, "template"_fly_string });
+}
+
+bool StackOfOpenElements::has_in_list_item_scope(FlyString const& tag_name) const
+{
+    auto list = s_base_list;
+    list.append("ol"_fly_string);
+    list.append("ul"_fly_string);
+    return has_in_scope_impl(tag_name, list);
+}
+
+// https://html.spec.whatwg.org/multipage/parsing.html#has-an-element-in-select-scope
+// The stack of open elements is said to have a particular element in select scope
+// when it has that element in the specific scope consisting of all element types except the following:
+// - optgroup in the HTML namespace
+// - option in the HTML namespace
+// NOTE: In this case it's "all element types _except_"
+bool StackOfOpenElements::has_in_select_scope(FlyString const& tag_name) const
+{
+    // https://html.spec.whatwg.org/multipage/parsing.html#has-an-element-in-the-specific-scope
+    // 1. Initialize node to be the current node (the bottommost node of the stack).
+    for (auto& node : m_elements.in_reverse()) {
+        // 2. If node is the target node, terminate in a match state.
+        if (node->local_name() == tag_name)
+            return true;
+        // 3. Otherwise, if node is one of the element types in list, terminate in a failure state.
+        // NOTE: Here "list" refers to all elements except option and optgroup
+        if (node->local_name() != HTML::TagNames::option && node->local_name() != HTML::TagNames::optgroup)
+            return false;
+        // 4. Otherwise, set node to the previous entry in the stack of open elements and return to step 2.
+    }
+    // [4.] (This will never fail, since the loop will always terminate in the previous step if the top of the stack
+    // — an html element — is reached.)
+    VERIFY_NOT_REACHED();
+}
+
+bool StackOfOpenElements::contains(const DOM::Element& element) const
+{
+    for (auto& element_on_stack : m_elements) {
+        if (&element == element_on_stack.ptr())
+            return true;
+    }
+    return false;
+}
+
+bool StackOfOpenElements::contains_template_element() const
+{
+    for (auto const& element : m_elements) {
+        if (element->namespace_uri() != Namespace::HTML)
+            continue;
+        if (element->local_name() == HTML::TagNames::template_)
+            return true;
+    }
+    return false;
+}
+
+void StackOfOpenElements::pop_until_an_element_with_tag_name_has_been_popped(FlyString const& tag_name)
+{
+    while (m_elements.last()->namespace_uri() != Namespace::HTML || m_elements.last()->local_name() != tag_name)
+        (void)pop();
+    (void)pop();
+}
+
+JS::GCPtr<DOM::Element> StackOfOpenElements::topmost_special_node_below(DOM::Element const& formatting_element)
+{
+    JS::GCPtr<DOM::Element> found_element = nullptr;
+    for (auto& element : m_elements.in_reverse()) {
+        if (element.ptr() == &formatting_element)
+            break;
+        if (HTMLParser::is_special_tag(element->local_name(), element->namespace_uri()))
+            found_element = element.ptr();
+    }
+    return found_element.ptr();
+}
+
+StackOfOpenElements::LastElementResult StackOfOpenElements::last_element_with_tag_name(FlyString const& 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.ptr(), i };
+    }
+    return { nullptr, -1 };
+}
+
+JS::GCPtr<DOM::Element> StackOfOpenElements::element_immediately_above(DOM::Element const& target)
+{
+    bool found_target = false;
+    for (auto& element : m_elements.in_reverse()) {
+        if (element.ptr() == &target) {
+            found_target = true;
+        } else if (found_target)
+            return element.ptr();
+    }
+    return nullptr;
+}
+
+void StackOfOpenElements::remove(DOM::Element const& element)
+{
+    m_elements.remove_first_matching([&element](auto& other) {
+        return other.ptr() == &element;
+    });
+}
+
+void StackOfOpenElements::replace(DOM::Element const& to_remove, JS::NonnullGCPtr<DOM::Element> to_add)
+{
+    for (size_t i = 0; i < m_elements.size(); i++) {
+        if (m_elements[i].ptr() == &to_remove) {
+            m_elements.remove(i);
+            m_elements.insert(i, to_add);
+            break;
+        }
+    }
+}
+
+void StackOfOpenElements::insert_immediately_below(JS::NonnullGCPtr<DOM::Element> element_to_add, DOM::Element const& target)
+{
+    for (size_t i = 0; i < m_elements.size(); i++) {
+        if (m_elements[i].ptr() == &target) {
+            m_elements.insert(i + 1, element_to_add);
+            break;
+        }
+    }
+}
+
+}