mirror of
https://github.com/openharmony/ark_js_runtime.git
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xdmal
a4062881d1
Add WeakRef and FinalizationRegistry interfaces issue:https://gitee.com/openharmony/ark_js_runtime/issues/I57W11 Signed-off-by: xdmal <maxiaodong16@huawei.com>
71 lines
3.1 KiB
C++
71 lines
3.1 KiB
C++
/*
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* Copyright (c) 2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "ecmascript/builtins/builtins_weak_ref.h"
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#include "ecmascript/ecma_vm.h"
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#include "ecmascript/js_weak_ref.h"
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#include "ecmascript/object_factory.h"
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namespace panda::ecmascript::builtins {
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JSTaggedValue BuiltinsWeakRef::WeakRefConstructor(EcmaRuntimeCallInfo *argv)
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{
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ASSERT(argv);
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JSThread *thread = argv->GetThread();
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BUILTINS_API_TRACE(thread, WeakRef, Constructor);
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[[maybe_unused]] EcmaHandleScope handleScope(thread);
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JSHandle<JSTaggedValue> newTarget = GetNewTarget(argv);
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ObjectFactory *factory = thread->GetEcmaVM()->GetFactory();
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// 1. If NewTarget is undefined, throw a TypeError exception.
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if (newTarget->IsUndefined()) {
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THROW_TYPE_ERROR_AND_RETURN(thread, "new target can't be undefined", JSTaggedValue::Exception());
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}
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// 2. If Type(target) is not Object, throw a TypeError exception.
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JSHandle<JSTaggedValue> target = GetCallArg(argv, 0);
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if (!target->IsECMAObject()) {
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THROW_TYPE_ERROR_AND_RETURN(thread, "target is not object", JSTaggedValue::Exception());
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}
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// 3. Let weakRef be ? OrdinaryCreateFromConstructor(NewTarget, "%WeakRef.prototype%", « [[WeakRefTarget]] »).
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JSHandle<JSTaggedValue> constructor = GetConstructor(argv);
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JSHandle<JSObject> obj = factory->NewJSObjectByConstructor(JSHandle<JSFunction>(constructor), newTarget);
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RETURN_EXCEPTION_IF_ABRUPT_COMPLETION(thread);
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// 4. Perform ! AddToKeptObjects(target).
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thread->GetEcmaVM()->GetHeap()->AddToKeptObjects(target);
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// 5. Set weakRef.[[WeakRefTarget]] to target.
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// 6. Return weakRef.
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JSHandle<JSWeakRef> weakRef = JSHandle<JSWeakRef>::Cast(obj);
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weakRef->SetToWeak(target.GetTaggedValue());
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return weakRef.GetTaggedValue();
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}
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JSTaggedValue BuiltinsWeakRef::Deref(EcmaRuntimeCallInfo *argv)
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{
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ASSERT(argv);
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JSThread *thread = argv->GetThread();
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BUILTINS_API_TRACE(thread, WeakRef, Deref);
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[[maybe_unused]] EcmaHandleScope handleScope(thread);
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// 1. Let weakRef be the this value.
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JSHandle<JSTaggedValue> thisValue = GetThis(argv);
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// 2. Perform ? RequireInternalSlot(weakRef, [[WeakRefTarget]]).
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if (!thisValue->IsJSWeakRef()) {
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THROW_TYPE_ERROR_AND_RETURN(thread, "thisValue is not object or does not have an internalSlot internal slot",
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JSTaggedValue::Exception());
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}
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// 3. Return ! WeakRefDeref(weakRef).
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JSHandle<JSWeakRef> weakRef = JSHandle<JSWeakRef>::Cast(thisValue);
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return JSWeakRef::WeakRefDeref(thread, weakRef);
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}
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} // namespace panda::ecmascript::builtins
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