mirror of
https://github.com/RGBCube/serenity
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f3117d46dc
This is a continuation of the previous five commits. A first big step into the direction of no longer having to pass a realm (or currently, a global object) trough layers upon layers of AOs! Unlike the create() APIs we can safely assume that this is only ever called when a running execution context and therefore current realm exists. If not, you can always manually allocate the Error and put it in a Completion :^) In the spec, throw exceptions implicitly use the current realm's intrinsics as well: https://tc39.es/ecma262/#sec-throw-an-exception
54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
/*
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* Copyright (c) 2021-2022, Idan Horowitz <idan.horowitz@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/Error.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/WeakRef.h>
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#include <LibJS/Runtime/WeakRefConstructor.h>
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namespace JS {
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WeakRefConstructor::WeakRefConstructor(Realm& realm)
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: NativeFunction(vm().names.WeakRef.as_string(), *realm.global_object().function_prototype())
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{
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}
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void WeakRefConstructor::initialize(Realm& realm)
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{
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auto& vm = this->vm();
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NativeFunction::initialize(realm);
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// 26.1.2.1 WeakRef.prototype, https://tc39.es/ecma262/#sec-weak-ref.prototype
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define_direct_property(vm.names.prototype, realm.global_object().weak_ref_prototype(), 0);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
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ThrowCompletionOr<Value> WeakRefConstructor::call()
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{
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auto& vm = this->vm();
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return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.WeakRef);
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}
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// 26.1.1.1 WeakRef ( target ), https://tc39.es/ecma262/#sec-weak-ref-target
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ThrowCompletionOr<Object*> WeakRefConstructor::construct(FunctionObject& new_target)
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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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auto target = vm.argument(0);
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if (!can_be_held_weakly(target))
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return vm.throw_completion<TypeError>(ErrorType::CannotBeHeldWeakly, target.to_string_without_side_effects());
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if (target.is_object())
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return TRY(ordinary_create_from_constructor<WeakRef>(global_object, new_target, &GlobalObject::weak_ref_prototype, target.as_object()));
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VERIFY(target.is_symbol());
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return TRY(ordinary_create_from_constructor<WeakRef>(global_object, new_target, &GlobalObject::weak_ref_prototype, target.as_symbol()));
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}
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}
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