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0dacc94edd
This moves the responsibility of setting up a SourceCode object to the users of JS::Lexer. This means Lexer and Parser are free to use string views into the SourceCode internally while working. It also means Lexer no longer has to think about anything other than UTF-16 (or ASCII) inputs. So the unit test for parsing various invalid UTF-8 sequences is deleted here.
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/AST.h>
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#include <LibJS/Lexer.h>
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#include <LibJS/Parser.h>
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#include <LibJS/Runtime/VM.h>
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#include <LibJS/Script.h>
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namespace JS {
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GC_DEFINE_ALLOCATOR(Script);
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// 16.1.5 ParseScript ( sourceText, realm, hostDefined ), https://tc39.es/ecma262/#sec-parse-script
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Result<GC::Ref<Script>, Vector<ParserError>> Script::parse(StringView source_text, Realm& realm, StringView filename, HostDefined* host_defined, size_t line_number_offset)
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{
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// 1. Let script be ParseText(sourceText, Script).
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auto parser = Parser(Lexer(SourceCode::create(String::from_utf8(filename).release_value_but_fixme_should_propagate_errors(), Utf16String::from_utf8(source_text)), line_number_offset));
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auto script = parser.parse_program();
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// 2. If script is a List of errors, return body.
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if (parser.has_errors())
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return parser.errors();
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// 3. Return Script Record { [[Realm]]: realm, [[ECMAScriptCode]]: script, [[HostDefined]]: hostDefined }.
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return realm.heap().allocate<Script>(realm, filename, move(script), host_defined);
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}
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Script::Script(Realm& realm, StringView filename, NonnullRefPtr<Program> parse_node, HostDefined* host_defined)
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: m_realm(realm)
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, m_parse_node(move(parse_node))
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, m_filename(filename)
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, m_host_defined(host_defined)
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{
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}
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Script::~Script()
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{
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}
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void Script::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_realm);
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if (m_host_defined)
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m_host_defined->visit_host_defined_self(visitor);
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for (auto const& loaded_module : m_loaded_modules)
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visitor.visit(loaded_module.module);
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}
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}
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