From d823d7da54f690949cbb98ab5c904d18ce348212 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 9 Sep 2021 19:02:40 +0200
Subject: [PATCH] LibJS: Implement the ParseScript AO (as JS::Script::parse())

---
 Userland/Libraries/LibJS/Script.cpp | 16 +++++++++++++---
 Userland/Libraries/LibJS/Script.h   |  8 ++++----
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/Userland/Libraries/LibJS/Script.cpp b/Userland/Libraries/LibJS/Script.cpp
index 947703b4a2..442d6d0e13 100644
--- a/Userland/Libraries/LibJS/Script.cpp
+++ b/Userland/Libraries/LibJS/Script.cpp
@@ -4,16 +4,26 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibJS/AST.h>
+#include <LibJS/Lexer.h>
+#include <LibJS/Parser.h>
 #include <LibJS/Script.h>
 
 namespace JS {
 
-NonnullRefPtr<Script> Script::create(GlobalObject& global_object, NonnullRefPtr<ASTNode> parse_node)
+// 16.1.5 ParseScript ( sourceText, realm, hostDefined ), https://tc39.es/ecma262/#sec-parse-script
+NonnullRefPtr<Script> Script::parse(StringView source_text, GlobalObject& global_object)
 {
-    return adopt_ref(*new Script(global_object, move(parse_node)));
+    // 1. Let body be ParseText(sourceText, Script).
+    auto body = Parser(Lexer(source_text)).parse_program();
+
+    // FIXME: 2. If body is a List of errors, return body.
+
+    // 3. Return Script Record { [[Realm]]: realm, [[ECMAScriptCode]]: body, [[HostDefined]]: hostDefined }.
+    return adopt_ref(*new Script(global_object, move(body)));
 }
 
-Script::Script(GlobalObject& global_object, NonnullRefPtr<ASTNode> parse_node)
+Script::Script(GlobalObject& global_object, NonnullRefPtr<Program> parse_node)
     : m_global_object(make_handle(&global_object))
     , m_parse_node(move(parse_node))
 {
diff --git a/Userland/Libraries/LibJS/Script.h b/Userland/Libraries/LibJS/Script.h
index f31534f360..4e6aa7a1c3 100644
--- a/Userland/Libraries/LibJS/Script.h
+++ b/Userland/Libraries/LibJS/Script.h
@@ -18,16 +18,16 @@ namespace JS {
 class Script : public RefCounted<Script> {
 public:
     ~Script();
-    static NonnullRefPtr<Script> create(GlobalObject&, NonnullRefPtr<ASTNode> parse_node);
+    static NonnullRefPtr<Script> parse(StringView source_text, GlobalObject&);
 
     GlobalObject& global_object() { return *m_global_object.cell(); }
-    ASTNode const& parse_node() const { return *m_parse_node; }
+    Program const& parse_node() const { return *m_parse_node; }
 
 private:
-    Script(GlobalObject&, NonnullRefPtr<ASTNode>);
+    Script(GlobalObject&, NonnullRefPtr<Program>);
 
     Handle<GlobalObject> m_global_object;
-    NonnullRefPtr<ASTNode> m_parse_node;
+    NonnullRefPtr<Program> m_parse_node;
 };
 
 }