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LibJS: Add a mode to parse JS as a module
In a module strict mode should be enabled at the start of parsing and we allow import and export statements.
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parent
d6d7d11590
commit
7613c22b06
8 changed files with 38 additions and 15 deletions
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@ -208,10 +208,13 @@ private:
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constexpr OperatorPrecedenceTable g_operator_precedence;
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Parser::ParserState::ParserState(Lexer l)
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Parser::ParserState::ParserState(Lexer l, Program::Type program_type)
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: lexer(move(l))
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, current_token(lexer.next())
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, current_token(TokenType::Invalid, {}, {}, {}, {}, 0, 0, 0)
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{
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if (program_type == Program::Type::Module)
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lexer.disallow_html_comments();
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current_token = lexer.next();
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}
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Parser::Scope::Scope(Parser::Scope::Type type, RefPtr<Parser::Scope> parent_scope)
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@ -232,8 +235,9 @@ RefPtr<Parser::Scope> Parser::Scope::get_current_function_scope()
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return result;
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}
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Parser::Parser(Lexer lexer)
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: m_state(move(lexer))
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Parser::Parser(Lexer lexer, Program::Type program_type)
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: m_state(move(lexer), program_type)
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, m_program_type(program_type)
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{
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}
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@ -282,8 +286,8 @@ NonnullRefPtr<Program> Parser::parse_program(bool starts_in_strict_mode)
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{
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auto rule_start = push_start();
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ScopePusher scope(*this, ScopePusher::Var | ScopePusher::Let, Scope::Function);
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auto program = adopt_ref(*new Program({ m_filename, rule_start.position(), position() }));
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if (starts_in_strict_mode) {
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auto program = adopt_ref(*new Program({ m_filename, rule_start.position(), position() }, m_program_type));
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if (starts_in_strict_mode || m_program_type == Program::Type::Module) {
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program->set_strict_mode();
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m_state.strict_mode = true;
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}
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