b84f8fb55b
Some of these are allocated upon initialization of the intrinsics, and some lazily, but in neither case the getters actually return a nullptr. This saves us a whole bunch of pointer dereferences (as NonnullGCPtr has an `operator T&()`), and also has the interesting side effect of forcing us to explicitly use the FunctionObject& overload of call(), as passing a NonnullGCPtr is ambigous - it could implicitly be turned into a Value _or_ a FunctionObject& (so we have to dereference manually).
77 lines
3 KiB
C++
77 lines
3 KiB
C++
/*
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* Copyright (c) 2021-2023, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/AggregateError.h>
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#include <LibJS/Runtime/AggregateErrorConstructor.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/ErrorConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/IteratorOperations.h>
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namespace JS {
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AggregateErrorConstructor::AggregateErrorConstructor(Realm& realm)
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: NativeFunction(static_cast<Object&>(*realm.intrinsics().error_constructor()))
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{
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}
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ThrowCompletionOr<void> AggregateErrorConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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MUST_OR_THROW_OOM(NativeFunction::initialize(realm));
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// 20.5.7.2.1 AggregateError.prototype, https://tc39.es/ecma262/#sec-aggregate-error.prototype
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define_direct_property(vm.names.prototype, realm.intrinsics().aggregate_error_prototype(), 0);
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define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
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return {};
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}
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// 20.5.7.1.1 AggregateError ( errors, message [ , options ] ), https://tc39.es/ecma262/#sec-aggregate-error
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ThrowCompletionOr<Value> AggregateErrorConstructor::call()
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{
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// 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
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return TRY(construct(*this));
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}
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// 20.5.7.1.1 AggregateError ( errors, message [ , options ] ), https://tc39.es/ecma262/#sec-aggregate-error
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ThrowCompletionOr<NonnullGCPtr<Object>> AggregateErrorConstructor::construct(FunctionObject& new_target)
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{
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auto& vm = this->vm();
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auto& realm = *vm.current_realm();
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auto errors = vm.argument(0);
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auto message = vm.argument(1);
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auto options = vm.argument(2);
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// 2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%AggregateError.prototype%", « [[ErrorData]] »).
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auto aggregate_error = TRY(ordinary_create_from_constructor<AggregateError>(vm, new_target, &Intrinsics::aggregate_error_prototype));
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// 3. If message is not undefined, then
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if (!message.is_undefined()) {
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// a. Let msg be ? ToString(message).
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auto msg = TRY(message.to_deprecated_string(vm));
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// b. Perform CreateNonEnumerableDataPropertyOrThrow(O, "message", msg).
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aggregate_error->create_non_enumerable_data_property_or_throw(vm.names.message, PrimitiveString::create(vm, msg));
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}
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// 4. Perform ? InstallErrorCause(O, options).
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TRY(aggregate_error->install_error_cause(options));
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// 5. Let errorsList be ? IterableToList(errors).
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auto errors_list = TRY(iterable_to_list(vm, errors));
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// 6. Perform ! DefinePropertyOrThrow(O, "errors", PropertyDescriptor { [[Configurable]]: true, [[Enumerable]]: false, [[Writable]]: true, [[Value]]: CreateArrayFromList(errorsList) }).
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MUST(aggregate_error->define_property_or_throw(vm.names.errors, { .value = Array::create_from(realm, errors_list), .writable = true, .enumerable = false, .configurable = true }));
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// 7. Return O.
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return aggregate_error;
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}
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}
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