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LibJS: Convert GetIterator AO to ThrowCompletionOr

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Timothy Flynn 2021-10-20 08:24:54 -04:00 • committed by Linus Groh
parent a3b3800cd4
commit 860a37640b
9 changed files with 56 additions and 48 deletions
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45
Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
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@ -37,16 +37,29 @@ static Value get_promise_resolve(GlobalObject& global_object, Value constructor)
}
// 27.2.1.1.1 IfAbruptRejectPromise ( value, capability ), https://tc39.es/ecma262/#sec-ifabruptrejectpromise
static Optional<Value> if_abrupt_reject_promise(GlobalObject& global_object, Value, PromiseCapability capability)
template<typename ValueType>
static Optional<Value> if_abrupt_reject_promise(GlobalObject& global_object, ValueType const& value_or_error, PromiseCapability capability)
{
auto& vm = global_object.vm();
if (auto* exception = vm.exception()) {
vm.clear_exception();
vm.stop_unwind();
// FIXME: This is temporary multi-type support. When all callers to this method are transformed
// to use ThrowCompletionOr, the 'else' clause (and template) can be dropped.
if constexpr (requires { value_or_error.is_throw_completion(); }) {
if (value_or_error.is_throw_completion()) {
vm.clear_exception();
vm.stop_unwind();
(void)vm.call(*capability.reject, js_undefined(), exception->value());
return capability.promise;
(void)vm.call(*capability.reject, js_undefined(), value_or_error.throw_completion().value());
return capability.promise;
}
} else {
if (auto* exception = vm.exception()) {
vm.clear_exception();
vm.stop_unwind();
(void)vm.call(*capability.reject, js_undefined(), exception->value());
return capability.promise;
}
}
return {};
@ -281,9 +294,10 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromiseConstructor::all)
if (auto abrupt = if_abrupt_reject_promise(global_object, promise_resolve, promise_capability); abrupt.has_value())
return abrupt.value();
auto iterator_record = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record, promise_capability); abrupt.has_value())
auto iterator_record_or_error = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record_or_error, promise_capability); abrupt.has_value())
return abrupt.value();
auto* iterator_record = iterator_record_or_error.release_value();
auto result = perform_promise_all(global_object, *iterator_record, constructor, promise_capability, promise_resolve);
if (vm.exception()) {
@ -310,9 +324,10 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromiseConstructor::all_settled)
if (auto abrupt = if_abrupt_reject_promise(global_object, promise_resolve, promise_capability); abrupt.has_value())
return abrupt.value();
auto iterator_record = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record, promise_capability); abrupt.has_value())
auto iterator_record_or_error = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record_or_error, promise_capability); abrupt.has_value())
return abrupt.value();
auto* iterator_record = iterator_record_or_error.release_value();
auto result = perform_promise_all_settled(global_object, *iterator_record, constructor, promise_capability, promise_resolve);
if (vm.exception()) {
@ -339,9 +354,10 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromiseConstructor::any)
if (auto abrupt = if_abrupt_reject_promise(global_object, promise_resolve, promise_capability); abrupt.has_value())
return abrupt.value();
auto iterator_record = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record, promise_capability); abrupt.has_value())
auto iterator_record_or_error = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record_or_error, promise_capability); abrupt.has_value())
return abrupt.value();
auto* iterator_record = iterator_record_or_error.release_value();
auto result = perform_promise_any(global_object, *iterator_record, constructor, promise_capability, promise_resolve);
if (vm.exception()) {
@ -368,9 +384,10 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromiseConstructor::race)
if (auto abrupt = if_abrupt_reject_promise(global_object, promise_resolve, promise_capability); abrupt.has_value())
return abrupt.value();
auto iterator_record = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record, promise_capability); abrupt.has_value())
auto iterator_record_or_error = get_iterator(global_object, vm.argument(0));
if (auto abrupt = if_abrupt_reject_promise(global_object, iterator_record_or_error, promise_capability); abrupt.has_value())
return abrupt.value();
auto* iterator_record = iterator_record_or_error.release_value();
auto result = perform_promise_race(global_object, *iterator_record, constructor, promise_capability, promise_resolve);
if (vm.exception()) {