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LibJS: Use Identifier to represent name of ClassExpression

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By using Identifier class to represent the name of a class expression,
it becomes possible to consistently store information within the
identifier object, indicating whether the name refers to a local
variable or not.
This commit is contained in:
Aliaksandr Kalenik 2023-06-30 16:51:39 +03:00 • committed by Andreas Kling
parent 4a83fb1b12
commit c734f2b5e6
4 changed files with 20 additions and 14 deletions
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19
Userland/Libraries/LibJS/Parser.cpp
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@ -1071,12 +1071,17 @@ NonnullRefPtr<ClassExpression const> Parser::parse_class_expression(bool expect_
RefPtr<FunctionExpression const> constructor;
HashTable<DeprecatedFlyString> found_private_names;
DeprecatedFlyString class_name = expect_class_name || match_identifier() || match(TokenType::Yield) || match(TokenType::Await)
? consume_identifier_reference().DeprecatedFlyString_value()
: "";
RefPtr<Identifier const> class_name { nullptr };
if (expect_class_name || match_identifier() || match(TokenType::Yield) || match(TokenType::Await)) {
class_name = create_ast_node<Identifier const>(
{ m_source_code, rule_start.position(), position() },
consume_identifier_reference().DeprecatedFlyString_value()
);
}
check_identifier_name_for_assignment_validity(class_name, true);
if (m_state.in_class_static_init_block && class_name == "await"sv)
if (class_name)
check_identifier_name_for_assignment_validity(class_name->string(), true);
if (m_state.in_class_static_init_block && class_name && class_name->string() == "await"sv)
syntax_error("Identifier must not be a reserved word in modules ('await')");
if (match(TokenType::Extends)) {
@ -1365,12 +1370,12 @@ NonnullRefPtr<ClassExpression const> Parser::parse_class_expression(bool expect_
constructor_body->append(create_ast_node<ReturnStatement>({ m_source_code, rule_start.position(), position() }, move(super_call)));
constructor = create_ast_node<FunctionExpression>(
{ m_source_code, rule_start.position(), position() }, class_name, "",
{ m_source_code, rule_start.position(), position() }, class_name ? class_name->string() : "", "",
move(constructor_body), Vector { FunctionParameter { move(argument_name), nullptr, true } }, 0, FunctionKind::Normal,
/* is_strict_mode */ true, /* might_need_arguments_object */ false, /* contains_direct_call_to_eval */ false);
} else {
constructor = create_ast_node<FunctionExpression>(
{ m_source_code, rule_start.position(), position() }, class_name, "",
{ m_source_code, rule_start.position(), position() }, class_name ? class_name->string() : "", "",
move(constructor_body), Vector<FunctionParameter> {}, 0, FunctionKind::Normal,
/* is_strict_mode */ true, /* might_need_arguments_object */ false, /* contains_direct_call_to_eval */ false);
}