LibWeb: Add ProcessingInstruction node

Not particuarly useful right now, but is used in
ensure_pre_insertion_validity.

I'm not totally sure on the constructor arguments.

Userland/Libraries/LibWeb/Bindings/WindowObjectHelper.h

@@ -205,6 +205,8 @@
 #include <LibWeb/Bindings/PerformancePrototype.h>
 #include <LibWeb/Bindings/PerformanceTimingConstructor.h>
 #include <LibWeb/Bindings/PerformanceTimingPrototype.h>
+#include <LibWeb/Bindings/ProcessingInstructionConstructor.h>
+#include <LibWeb/Bindings/ProcessingInstructionPrototype.h>
 #include <LibWeb/Bindings/ProgressEventConstructor.h>
 #include <LibWeb/Bindings/ProgressEventPrototype.h>
 #include <LibWeb/Bindings/SVGElementConstructor.h>
@@ -337,6 +339,7 @@
     ADD_WINDOW_OBJECT_INTERFACE(Node)                      \
     ADD_WINDOW_OBJECT_INTERFACE(Performance)               \
     ADD_WINDOW_OBJECT_INTERFACE(PerformanceTiming)         \
+    ADD_WINDOW_OBJECT_INTERFACE(ProcessingInstruction)     \
     ADD_WINDOW_OBJECT_INTERFACE(ProgressEvent)             \
     ADD_WINDOW_OBJECT_INTERFACE(Screen)                    \
     ADD_WINDOW_OBJECT_INTERFACE(ShadowRoot)                \

Userland/Libraries/LibWeb/CMakeLists.txt

@@ -54,6 +54,7 @@ set(SOURCES
     DOM/Node.cpp
     DOM/ParentNode.cpp
     DOM/Position.cpp
+    DOM/ProcessingInstruction.cpp
     DOM/ShadowRoot.cpp
     DOM/Text.cpp
     DOM/Text.idl
@@ -305,6 +306,7 @@ libweb_js_wrapper(DOM/DOMImplementation)
 libweb_js_wrapper(DOM/Element)
 libweb_js_wrapper(DOM/Event)
 libweb_js_wrapper(DOM/EventTarget)
+libweb_js_wrapper(DOM/ProcessingInstruction)
 libweb_js_wrapper(DOM/ShadowRoot)
 libweb_js_wrapper(DOM/Node)
 libweb_js_wrapper(DOM/Range)

Userland/Libraries/LibWeb/DOM/ProcessingInstruction.cpp

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ * 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/ProcessingInstruction.h>
+#include <LibWeb/Layout/TextNode.h>
+
+namespace Web::DOM {
+
+ProcessingInstruction::ProcessingInstruction(Document& document, const String& data, const String& target)
+    : CharacterData(document, NodeType::PROCESSING_INSTRUCTION_NODE, data)
+    , m_target(target)
+{
+}
+
+ProcessingInstruction::~ProcessingInstruction()
+{
+}
+
+}

Userland/Libraries/LibWeb/DOM/ProcessingInstruction.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ * 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.
+ */
+
+#pragma once
+
+#include <AK/FlyString.h>
+#include <LibWeb/DOM/CharacterData.h>
+
+namespace Web::DOM {
+
+class ProcessingInstruction final : public CharacterData {
+public:
+    using WrapperType = Bindings::ProcessingInstructionWrapper;
+
+    ProcessingInstruction(Document&, const String&, const String&);
+    virtual ~ProcessingInstruction() override;
+
+    virtual FlyString node_name() const override { return m_target; }
+
+    const String& target() const { return m_target; }
+
+private:
+    String m_target;
+};
+
+}

Userland/Libraries/LibWeb/DOM/ProcessingInstruction.idl

@@ -0,0 +1,3 @@
+interface ProcessingInstruction : CharacterData {
+    readonly attribute DOMString target;
+};

Userland/Libraries/LibWeb/Forward.h

@@ -60,6 +60,7 @@ class MouseEvent;
 class Node;
 class ParentNode;
 class Position;
+class ProcessingInstruction;
 class ShadowRoot;
 class Text;
 class Timer;
@@ -300,6 +301,7 @@ class MouseEventWrapper;
 class NodeWrapper;
 class PerformanceTimingWrapper;
 class PerformanceWrapper;
+class ProcessingInstructionWrapper;
 class ProgressEventWrapper;
 class ScreenWrapper;
 class ScriptExecutionContext;