LibJS: Start adding a JS::Script class (spec's "Script Record")

Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/612a23d6fc1

Userland/Libraries/LibJS/CMakeLists.txt

@@ -184,6 +184,7 @@ set(SOURCES
     Runtime/WeakSet.cpp
     Runtime/WeakSetConstructor.cpp
     Runtime/WeakSetPrototype.cpp
+    Script.cpp
     SyntaxHighlighter.cpp
     Token.cpp
 )

Userland/Libraries/LibJS/Script.cpp

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Script.h>
+
+namespace JS {
+
+NonnullRefPtr<Script> Script::create(GlobalObject& global_object, NonnullRefPtr<ASTNode> parse_node)
+{
+    return adopt_ref(*new Script(global_object, move(parse_node)));
+}
+
+Script::Script(GlobalObject& global_object, NonnullRefPtr<ASTNode> parse_node)
+    : m_global_object(make_handle(&global_object))
+    , m_parse_node(move(parse_node))
+{
+}
+
+Script::~Script()
+{
+}
+
+}

Userland/Libraries/LibJS/Script.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/NonnullRefPtr.h>
+#include <AK/RefCounted.h>
+#include <LibJS/AST.h>
+#include <LibJS/Heap/Handle.h>
+#include <LibJS/Runtime/GlobalObject.h>
+
+namespace JS {
+
+// 16.1.4 Script Records, https://tc39.es/ecma262/#sec-script-records
+class Script : public RefCounted<Script> {
+public:
+    ~Script();
+    static NonnullRefPtr<Script> create(GlobalObject&, NonnullRefPtr<ASTNode> parse_node);
+
+    GlobalObject& global_object() { return *m_global_object.cell(); }
+    ASTNode const& parse_node() const { return *m_parse_node; }
+
+private:
+    Script(GlobalObject&, NonnullRefPtr<ASTNode>);
+
+    Handle<GlobalObject> m_global_object;
+    NonnullRefPtr<ASTNode> m_parse_node;
+};
+
+}