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LibJS: Implement the AsyncDisposableStack interface

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This is very similar to the DisposableStack interface, except disposal
of resources is promise-based.
This commit is contained in:
Timothy Flynn 2025-01-17 10:09:01 -05:00 • committed by Andreas Kling
commit 26c2484c2f
Notes: github-actions[bot] 2025-01-17 19:47:28 +00:00
22 changed files with 873 additions and 0 deletions
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52
Libraries/LibJS/Runtime/AsyncDisposableStackConstructor.cpp Normal file
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/*
* Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/AsyncDisposableStack.h>
#include <LibJS/Runtime/AsyncDisposableStackConstructor.h>
namespace JS {
GC_DEFINE_ALLOCATOR(AsyncDisposableStackConstructor);
AsyncDisposableStackConstructor::AsyncDisposableStackConstructor(Realm& realm)
: NativeFunction(realm.vm().names.AsyncDisposableStack.as_string(), realm.intrinsics().function_prototype())
{
}
void AsyncDisposableStackConstructor::initialize(Realm& realm)
{
auto& vm = this->vm();
Base::initialize(realm);
// 12.4.2.1 AsyncDisposableStack.prototype, https://tc39.es/proposal-explicit-resource-management/#sec-asyncdisposablestack.prototype
define_direct_property(vm.names.prototype, realm.intrinsics().async_disposable_stack_prototype(), 0);
define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
}
// 12.4.1.1 AsyncDisposableStack ( ), https://tc39.es/proposal-explicit-resource-management/#sec-asyncdisposablestack
ThrowCompletionOr<Value> AsyncDisposableStackConstructor::call()
{
auto& vm = this->vm();
// 1. If NewTarget is undefined, throw a TypeError exception.
return vm.throw_completion<TypeError>(ErrorType::ConstructorWithoutNew, vm.names.AsyncDisposableStack);
}
// 12.4.1.1 AsyncDisposableStack ( ), https://tc39.es/proposal-explicit-resource-management/#sec-asyncdisposablestack
ThrowCompletionOr<GC::Ref<Object>> AsyncDisposableStackConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
// 2. Let asyncDisposableStack be ? OrdinaryCreateFromConstructor(NewTarget, "%AsyncDisposableStack.prototype%", « [[AsyncDisposableState]], [[DisposeCapability]] »).
// 3. Set asyncDisposableStack.[[AsyncDisposableState]] to pending.
// 4. Set asyncDisposableStack.[[DisposeCapability]] to NewDisposeCapability().
// 5. Return asyncDisposableStack.
return TRY(ordinary_create_from_constructor<AsyncDisposableStack>(vm, new_target, &Intrinsics::async_disposable_stack_prototype, new_dispose_capability()));
}
}