/*

 * Copyright (c) 2021, Andreas Kling <kling@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <LibJS/AST.h>

#include <LibJS/Lexer.h>

#include <LibJS/Parser.h>

#include <LibJS/Runtime/VM.h>

#include <LibJS/Script.h>

namespace JS {

JS_DEFINE_ALLOCATOR(Script);

// 16.1.5 ParseScript ( sourceText, realm, hostDefined ), https://tc39.es/ecma262/#sec-parse-script

Result<NonnullGCPtr<Script>, Vector<ParserError>> Script::parse(StringView source_text, Realm& realm, StringView filename, HostDefined* host_defined, size_t line_number_offset)

{

    // 1. Let script be ParseText(sourceText, Script).

    auto parser = Parser(Lexer(source_text, filename, line_number_offset));

    auto script = parser.parse_program();

    // 2. If script is a List of errors, return body.

    if (parser.has_errors())

        return parser.errors();

    // 3. Return Script Record { [[Realm]]: realm, [[ECMAScriptCode]]: script, [[HostDefined]]: hostDefined }.

    return realm.heap().allocate_without_realm<Script>(realm, filename, move(script), host_defined);

}

Script::Script(Realm& realm, StringView filename, NonnullRefPtr<Program> parse_node, HostDefined* host_defined)

    : m_realm(realm)

    , m_parse_node(move(parse_node))

    , m_filename(filename)

    , m_host_defined(host_defined)

{

}

Script::~Script()

{

}

void Script::visit_edges(Cell::Visitor& visitor)

{

    Base::visit_edges(visitor);

    visitor.visit(m_realm);

    if (m_host_defined)

        m_host_defined->visit_host_defined_self(visitor);

    for (auto const& loaded_module : m_loaded_modules)

        visitor.visit(loaded_module.module);

}

}