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LibJS: Disallow shorthand properties with reserved names

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davidot 2021-11-26 23:36:43 +01:00 • committed by Linus Groh
parent e491fc0e81
commit 51e23cd043
2 changed files with 56 additions and 0 deletions
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8
Userland/Libraries/LibJS/Parser.cpp
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@ -1497,6 +1497,8 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
auto lookahead_token = next_token();
if (lookahead_token.type() != TokenType::ParenOpen && lookahead_token.type() != TokenType::Colon
&& lookahead_token.type() != TokenType::Comma && lookahead_token.type() != TokenType::CurlyClose
&& lookahead_token.type() != TokenType::Async
&& !lookahead_token.trivia_contains_line_terminator()) {
consume(TokenType::Async);
function_kind = FunctionKind::Async;
@ -1567,6 +1569,12 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
}
properties.append(create_ast_node<ObjectProperty>({ m_state.current_token.filename(), rule_start.position(), position() }, *property_name, parse_expression(2), property_type, false));
} else if (property_name && property_value) {
if (m_state.strict_mode && is<StringLiteral>(*property_name)) {
auto& string_literal = static_cast<StringLiteral const&>(*property_name);
if (is_strict_reserved_word(string_literal.value()))
syntax_error(String::formatted("'{}' is a reserved keyword", string_literal.value()));
}
properties.append(create_ast_node<ObjectProperty>({ m_state.current_token.filename(), rule_start.position(), position() }, *property_name, *property_value, property_type, false));
} else {
expected("a property");