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LibJS: Convert internal_is_extensible() to ThrowCompletionOr

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This commit is contained in:
Linus Groh 2021-09-29 00:02:05 +01:00
parent 8c81c84c18
commit 9b4362f10a
9 changed files with 18 additions and 22 deletions
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22
Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
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@ -148,7 +148,7 @@ ThrowCompletionOr<bool> ProxyObject::internal_set_prototype_of(Object* prototype
}
// 10.5.3 [[IsExtensible]] ( ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-isextensible
bool ProxyObject::internal_is_extensible() const
ThrowCompletionOr<bool> ProxyObject::internal_is_extensible() const
{
auto& vm = this->vm();
auto& global_object = this->global_object();
@ -156,16 +156,14 @@ bool ProxyObject::internal_is_extensible() const
// 1. Let handler be O.[[ProxyHandler]].
// 2. If handler is null, throw a TypeError exception.
if (m_is_revoked) {
vm.throw_exception<TypeError>(global_object, ErrorType::ProxyRevoked);
return {};
}
if (m_is_revoked)
return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyRevoked);
// 3. Assert: Type(handler) is Object.
// 4. Let target be O.[[ProxyTarget]].
// 5. Let trap be ? GetMethod(handler, "isExtensible").
auto trap = TRY_OR_DISCARD(Value(&m_handler).get_method(global_object, vm.names.isExtensible));
auto trap = TRY(Value(&m_handler).get_method(global_object, vm.names.isExtensible));
// 6. If trap is undefined, then
if (!trap) {
@ -174,18 +172,16 @@ bool ProxyObject::internal_is_extensible() const
}
// 7. Let booleanTrapResult be ! ToBoolean(? Call(trap, handler, « target »)).
auto trap_result = TRY_OR_DISCARD(vm.call(*trap, &m_handler, &m_target)).to_boolean();
auto trap_result = TRY(vm.call(*trap, &m_handler, &m_target)).to_boolean();
// 8. Let targetResult be ? IsExtensible(target).
auto target_result = m_target.is_extensible();
if (vm.exception())
return {};
if (auto* exception = vm.exception())
return throw_completion(exception->value());
// 9. If SameValue(booleanTrapResult, targetResult) is false, throw a TypeError exception.
if (trap_result != target_result) {
vm.throw_exception<TypeError>(global_object, ErrorType::ProxyIsExtensibleReturn);
return {};
}
if (trap_result != target_result)
return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyIsExtensibleReturn);
// 10. Return booleanTrapResult.
return trap_result;