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@@ -231,7 +231,7 @@ ThrowCompletionOr<bool> ProxyObject::internal_prevent_extensions()
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}
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// 10.5.5 [[GetOwnProperty]] ( P ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-getownproperty-p
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-Optional<PropertyDescriptor> ProxyObject::internal_get_own_property(const PropertyName& property_name) const
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+ThrowCompletionOr<Optional<PropertyDescriptor>> ProxyObject::internal_get_own_property(const PropertyName& property_name) const
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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@@ -242,16 +242,14 @@ Optional<PropertyDescriptor> ProxyObject::internal_get_own_property(const Proper
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// 2. Let handler be O.[[ProxyHandler]].
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// 3. If handler is null, throw a TypeError exception.
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- if (m_is_revoked) {
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyRevoked);
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- return {};
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- }
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+ if (m_is_revoked)
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyRevoked);
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// 4. Assert: Type(handler) is Object.
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// 5. Let target be O.[[ProxyTarget]].
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// 6. Let trap be ? GetMethod(handler, "getOwnPropertyDescriptor").
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- auto trap = TRY_OR_DISCARD(Value(&m_handler).get_method(global_object, vm.names.getOwnPropertyDescriptor));
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+ auto trap = TRY(Value(&m_handler).get_method(global_object, vm.names.getOwnPropertyDescriptor));
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// 7. If trap is undefined, then
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if (!trap) {
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@@ -260,55 +258,47 @@ Optional<PropertyDescriptor> ProxyObject::internal_get_own_property(const Proper
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}
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// 8. Let trapResultObj be ? Call(trap, handler, « target, P »).
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- auto trap_result = TRY_OR_DISCARD(vm.call(*trap, &m_handler, &m_target, property_name_to_value(vm, property_name)));
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+ auto trap_result = TRY(vm.call(*trap, &m_handler, &m_target, property_name_to_value(vm, property_name)));
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// 9. If Type(trapResultObj) is neither Object nor Undefined, throw a TypeError exception.
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- if (!trap_result.is_object() && !trap_result.is_undefined()) {
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorReturn);
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- return {};
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- }
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+ if (!trap_result.is_object() && !trap_result.is_undefined())
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorReturn);
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// 10. Let targetDesc be ? target.[[GetOwnProperty]](P).
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- auto target_descriptor = m_target.internal_get_own_property(property_name);
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- if (vm.exception())
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- return {};
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+ auto target_descriptor = TRY(m_target.internal_get_own_property(property_name));
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// 11. If trapResultObj is undefined, then
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if (trap_result.is_undefined()) {
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// a. If targetDesc is undefined, return undefined.
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if (!target_descriptor.has_value())
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- return {};
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+ return Optional<PropertyDescriptor> {};
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// b. If targetDesc.[[Configurable]] is false, throw a TypeError exception.
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- if (!*target_descriptor->configurable) {
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorNonConfigurable);
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- return {};
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- }
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+ if (!*target_descriptor->configurable)
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorNonConfigurable);
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// c. Let extensibleTarget be ? IsExtensible(target).
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auto extensible_target = m_target.is_extensible();
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- if (vm.exception())
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- return {};
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+ if (auto* exception = vm.exception())
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+ return throw_completion(exception->value());
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// d. If extensibleTarget is false, throw a TypeError exception.
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- if (!extensible_target) {
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorUndefinedReturn);
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- return {};
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- }
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+ if (!extensible_target)
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorUndefinedReturn);
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// e. Return undefined.
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- return {};
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+ return Optional<PropertyDescriptor> {};
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}
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// 12. Let extensibleTarget be ? IsExtensible(target).
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auto extensible_target = m_target.is_extensible();
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- if (vm.exception())
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- return {};
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+ if (auto* exception = vm.exception())
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+ return throw_completion(exception->value());
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// 13. Let resultDesc be ? ToPropertyDescriptor(trapResultObj).
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auto result_desc = to_property_descriptor(global_object, trap_result);
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- if (vm.exception())
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- return {};
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+ if (auto* exception = vm.exception())
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+ return throw_completion(exception->value());
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// 14. Call CompletePropertyDescriptor(resultDesc).
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result_desc.complete();
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@@ -317,31 +307,26 @@ Optional<PropertyDescriptor> ProxyObject::internal_get_own_property(const Proper
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auto valid = is_compatible_property_descriptor(extensible_target, result_desc, target_descriptor);
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// 16. If valid is false, throw a TypeError exception.
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- if (!valid) {
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorInvalidDescriptor);
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- return {};
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- }
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+ if (!valid)
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorInvalidDescriptor);
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// 17. If resultDesc.[[Configurable]] is false, then
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if (!*result_desc.configurable) {
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// a. If targetDesc is undefined or targetDesc.[[Configurable]] is true, then
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- if (!target_descriptor.has_value() || *target_descriptor->configurable) {
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+ if (!target_descriptor.has_value() || *target_descriptor->configurable)
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// i. Throw a TypeError exception.
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorInvalidNonConfig);
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- return {};
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- }
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorInvalidNonConfig);
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+
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// b. If resultDesc has a [[Writable]] field and resultDesc.[[Writable]] is false, then
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if (result_desc.writable.has_value() && !*result_desc.writable) {
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// i. If targetDesc.[[Writable]] is true, throw a TypeError exception.
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- if (*target_descriptor->writable) {
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- vm.throw_exception<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorNonConfigurableNonWritable);
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- return {};
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- }
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+ if (*target_descriptor->writable)
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+ return vm.throw_completion<TypeError>(global_object, ErrorType::ProxyGetOwnDescriptorNonConfigurableNonWritable);
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}
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}
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// 18. Return resultDesc.
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- return result_desc;
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+ return { result_desc };
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}
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// 10.5.6 [[DefineOwnProperty]] ( P, Desc ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-defineownproperty-p-desc
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@@ -384,9 +369,7 @@ bool ProxyObject::internal_define_own_property(PropertyName const& property_name
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return false;
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// 11. Let targetDesc be ? target.[[GetOwnProperty]](P).
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- auto target_descriptor = m_target.internal_get_own_property(property_name);
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- if (vm.exception())
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- return {};
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+ auto target_descriptor = TRY_OR_DISCARD(m_target.internal_get_own_property(property_name));
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// 12. Let extensibleTarget be ? IsExtensible(target).
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auto extensible_target = m_target.is_extensible();
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@@ -476,9 +459,7 @@ bool ProxyObject::internal_has_property(PropertyName const& property_name) const
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// 9. If booleanTrapResult is false, then
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if (!trap_result) {
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// a. Let targetDesc be ? target.[[GetOwnProperty]](P).
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- auto target_descriptor = m_target.internal_get_own_property(property_name);
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- if (vm.exception())
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- return {};
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+ auto target_descriptor = TRY_OR_DISCARD(m_target.internal_get_own_property(property_name));
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// b. If targetDesc is not undefined, then
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if (target_descriptor.has_value()) {
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@@ -558,9 +539,7 @@ Value ProxyObject::internal_get(PropertyName const& property_name, Value receive
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auto trap_result = TRY_OR_DISCARD(vm.call(*trap, &m_handler, &m_target, property_name_to_value(vm, property_name), receiver));
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// 9. Let targetDesc be ? target.[[GetOwnProperty]](P).
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- auto target_descriptor = m_target.internal_get_own_property(property_name);
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- if (vm.exception())
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- return {};
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+ auto target_descriptor = TRY_OR_DISCARD(m_target.internal_get_own_property(property_name));
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// 10. If targetDesc is not undefined and targetDesc.[[Configurable]] is false, then
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if (target_descriptor.has_value() && !*target_descriptor->configurable) {
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@@ -626,9 +605,7 @@ bool ProxyObject::internal_set(PropertyName const& property_name, Value value, V
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return false;
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// 10. Let targetDesc be ? target.[[GetOwnProperty]](P).
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- auto target_descriptor = m_target.internal_get_own_property(property_name);
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- if (vm.exception())
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- return {};
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+ auto target_descriptor = TRY_OR_DISCARD(m_target.internal_get_own_property(property_name));
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// 11. If targetDesc is not undefined and targetDesc.[[Configurable]] is false, then
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if (target_descriptor.has_value() && !*target_descriptor->configurable) {
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@@ -691,9 +668,7 @@ bool ProxyObject::internal_delete(PropertyName const& property_name)
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return false;
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// 10. Let targetDesc be ? target.[[GetOwnProperty]](P).
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- auto target_descriptor = m_target.internal_get_own_property(property_name);
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- if (vm.exception())
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- return {};
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+ auto target_descriptor = TRY_OR_DISCARD(m_target.internal_get_own_property(property_name));
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// 11. If targetDesc is undefined, return true.
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if (!target_descriptor.has_value())
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@@ -799,7 +774,10 @@ MarkedValueList ProxyObject::internal_own_property_keys() const
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// 16. For each element key of targetKeys, do
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for (auto& key : target_keys) {
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// a. Let desc be ? target.[[GetOwnProperty]](key).
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- auto descriptor = m_target.internal_get_own_property(PropertyName::from_value(global_object, key));
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+ auto descriptor_or_error = m_target.internal_get_own_property(PropertyName::from_value(global_object, key));
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+ if (descriptor_or_error.is_error())
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+ return MarkedValueList { heap() };
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+ auto descriptor = descriptor_or_error.release_value();
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// b. If desc is not undefined and desc.[[Configurable]] is false, then
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if (descriptor.has_value() && !*descriptor->configurable) {
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