mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
synced 2024-10-08 00:24:00 +00:00
71 lines
3.1 KiB
C++
71 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2022 Huawei Device Co., Ltd.
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "ecmascript/builtins/builtins_weak_ref.h"
|
|
|
|
#include "ecmascript/ecma_vm.h"
|
|
#include "ecmascript/js_weak_ref.h"
|
|
#include "ecmascript/object_factory-inl.h"
|
|
|
|
namespace panda::ecmascript::builtins {
|
|
JSTaggedValue BuiltinsWeakRef::WeakRefConstructor(EcmaRuntimeCallInfo *argv)
|
|
{
|
|
ASSERT(argv);
|
|
JSThread *thread = argv->GetThread();
|
|
BUILTINS_API_TRACE(thread, WeakRef, Constructor);
|
|
[[maybe_unused]] EcmaHandleScope handleScope(thread);
|
|
JSHandle<JSTaggedValue> newTarget = GetNewTarget(argv);
|
|
ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
|
|
// 1. If NewTarget is undefined, throw a TypeError exception.
|
|
if (newTarget->IsUndefined()) {
|
|
THROW_TYPE_ERROR_AND_RETURN(thread, "new target can't be undefined", JSTaggedValue::Exception());
|
|
}
|
|
// 2. If CanBeHeldWeakly(target) is false, throw a TypeError exception.
|
|
JSHandle<JSTaggedValue> target = GetCallArg(argv, 0);
|
|
if (!JSTaggedValue::CanBeHeldWeakly(thread, target)) {
|
|
THROW_TYPE_ERROR_AND_RETURN(thread, "target invalid", JSTaggedValue::Exception());
|
|
}
|
|
// 3. Let weakRef be ? OrdinaryCreateFromConstructor(NewTarget, "%WeakRef.prototype%", « [[WeakRefTarget]] »).
|
|
JSHandle<JSTaggedValue> constructor = GetConstructor(argv);
|
|
JSHandle<JSObject> obj = factory->NewJSObjectByConstructor(JSHandle<JSFunction>(constructor), newTarget);
|
|
RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
|
|
// 4. Perform ! AddToKeptObjects(target).
|
|
thread->GetEcmaVM()->GetHeap()->AddToKeptObjects(target);
|
|
// 5. Set weakRef.[[WeakRefTarget]] to target.
|
|
// 6. Return weakRef.
|
|
JSHandle<JSWeakRef> weakRef = JSHandle<JSWeakRef>::Cast(obj);
|
|
weakRef->SetToWeak(thread, target.GetTaggedValue());
|
|
return weakRef.GetTaggedValue();
|
|
}
|
|
|
|
JSTaggedValue BuiltinsWeakRef::Deref(EcmaRuntimeCallInfo *argv)
|
|
{
|
|
ASSERT(argv);
|
|
JSThread *thread = argv->GetThread();
|
|
BUILTINS_API_TRACE(thread, WeakRef, Deref);
|
|
[[maybe_unused]] EcmaHandleScope handleScope(thread);
|
|
// 1. Let weakRef be the this value.
|
|
JSHandle<JSTaggedValue> thisValue = GetThis(argv);
|
|
// 2. Perform ? RequireInternalSlot(weakRef, [[WeakRefTarget]]).
|
|
if (!thisValue->IsJSWeakRef()) {
|
|
THROW_TYPE_ERROR_AND_RETURN(thread, "thisValue is not object or does not have an internalSlot internal slot",
|
|
JSTaggedValue::Exception());
|
|
}
|
|
// 3. Return ! WeakRefDeref(weakRef).
|
|
JSHandle<JSWeakRef> weakRef = JSHandle<JSWeakRef>::Cast(thisValue);
|
|
return JSWeakRef::WeakRefDeref(thread, weakRef);
|
|
}
|
|
} // namespace panda::ecmascript::builtins
|