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LibJS: Add spec comments to AggregateErrorConstructor

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This commit is contained in:
Linus Groh 2022-12-12 21:18:48 +00:00
parent 172738222c
commit 3b64610834
1 changed files with 21 additions and 7 deletions
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28
Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
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@ -30,31 +30,45 @@ void AggregateErrorConstructor::initialize(Realm& realm)
define_direct_property(vm.names.length, Value(2), Attribute::Configurable); define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
} }
// 20.5.7.1.1 AggregateError ( errors, message ), https://tc39.es/ecma262/#sec-aggregate-error // 20.5.7.1.1 AggregateError ( errors, message [ , options ] ), https://tc39.es/ecma262/#sec-aggregate-error
ThrowCompletionOr<Value> AggregateErrorConstructor::call() ThrowCompletionOr<Value> AggregateErrorConstructor::call()
{ {
// 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
return TRY(construct(*this)); return TRY(construct(*this));
} }
// 20.5.7.1.1 AggregateError ( errors, message ), https://tc39.es/ecma262/#sec-aggregate-error // 20.5.7.1.1 AggregateError ( errors, message [ , options ] ), https://tc39.es/ecma262/#sec-aggregate-error
ThrowCompletionOr<Object*> AggregateErrorConstructor::construct(FunctionObject& new_target) ThrowCompletionOr<Object*> AggregateErrorConstructor::construct(FunctionObject& new_target)
{ {
auto& vm = this->vm(); auto& vm = this->vm();
auto& realm = *vm.current_realm(); auto& realm = *vm.current_realm();
auto errors = vm.argument(0);
auto message = vm.argument(1);
auto options = vm.argument(2);
// 2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%AggregateError.prototype%", « [[ErrorData]] »).
auto* aggregate_error = TRY(ordinary_create_from_constructor<AggregateError>(vm, new_target, &Intrinsics::aggregate_error_prototype)); auto* aggregate_error = TRY(ordinary_create_from_constructor<AggregateError>(vm, new_target, &Intrinsics::aggregate_error_prototype));
if (!vm.argument(1).is_undefined()) { // 3. If message is not undefined, then
auto message = TRY(vm.argument(1).to_string(vm)); if (!message.is_undefined()) {
aggregate_error->create_non_enumerable_data_property_or_throw(vm.names.message, PrimitiveString::create(vm, message)); // a. Let msg be ? ToString(message).
auto msg = TRY(message.to_string(vm));
// b. Perform CreateNonEnumerableDataPropertyOrThrow(O, "message", msg).
aggregate_error->create_non_enumerable_data_property_or_throw(vm.names.message, PrimitiveString::create(vm, msg));
} }
TRY(aggregate_error->install_error_cause(vm.argument(2))); // 4. Perform ? InstallErrorCause(O, options).
TRY(aggregate_error->install_error_cause(options));
auto errors_list = TRY(iterable_to_list(vm, vm.argument(0))); // 5. Let errorsList be ? IterableToList(errors).
auto errors_list = TRY(iterable_to_list(vm, errors));
// 6. Perform ! DefinePropertyOrThrow(O, "errors", PropertyDescriptor { [[Configurable]]: true, [[Enumerable]]: false, [[Writable]]: true, [[Value]]: CreateArrayFromList(errorsList) }).
MUST(aggregate_error->define_property_or_throw(vm.names.errors, { .value = Array::create_from(realm, errors_list), .writable = true, .enumerable = false, .configurable = true })); MUST(aggregate_error->define_property_or_throw(vm.names.errors, { .value = Array::create_from(realm, errors_list), .writable = true, .enumerable = false, .configurable = true }));
// 7. Return O.
return aggregate_error; return aggregate_error;
} }