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/*
* Copyright (C) 2022, 2023 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSDOMBinding.h"
#include <JavaScriptCore/ArrayPrototype.h>
namespace JSC {
class ObservableArray : public RefCounted<ObservableArray> {
public:
virtual ~ObservableArray() { }
virtual bool setValueAt(JSGlobalObject*, unsigned index, JSValue) = 0;
virtual void removeLast() = 0;
virtual JSValue valueAt(JSGlobalObject*, unsigned index) const = 0;
virtual unsigned length() const = 0;
virtual void shrinkTo(unsigned) = 0;
};
class JSObservableArray final : public JSArray {
public:
using Base = JSArray;
static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesGetOwnPropertyNames | OverridesPut | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero;
static constexpr JSC::DestructionMode needsDestruction = JSC::NeedsDestruction;
template<typename CellType, JSC::SubspaceAccess>
static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
{
return subspaceForImpl(vm);
}
static JSObservableArray* create(JSGlobalObject* lexicalGlobalObject, Ref<ObservableArray>&& array)
{
VM& vm = lexicalGlobalObject->vm();
// FIXME: deprecatedGetDOMStructure uses the prototype off of the wrong global object
// We need to pass in the right global object for "array".
Structure* domStructure = WebCore::deprecatedGetDOMStructure<JSObservableArray>(lexicalGlobalObject);
JSObservableArray* observableArray = new (NotNull, allocateCell<JSObservableArray>(vm)) JSObservableArray(vm, domStructure);
observableArray->finishCreation(vm, WTFMove(array));
return observableArray;
}
~JSObservableArray();
static void destroy(JSCell*);
static bool defineOwnProperty(JSObject*, JSGlobalObject*, PropertyName, const PropertyDescriptor&, bool throwException);
static void getOwnPropertyNames(JSObject*, JSGlobalObject*, PropertyNameArray&, DontEnumPropertiesMode);
static bool getOwnPropertySlot(JSObject*, JSGlobalObject*, PropertyName, PropertySlot&);
static bool getOwnPropertySlotByIndex(JSObject*, JSGlobalObject*, unsigned, PropertySlot&);
static bool put(JSCell*, JSGlobalObject*, PropertyName, JSValue, PutPropertySlot&);
static bool putByIndex(JSCell*, JSGlobalObject*, unsigned propertyName, JSValue, bool shouldThrow);
static bool deleteProperty(JSCell*, JSGlobalObject*, PropertyName, DeletePropertySlot&);
static bool deletePropertyByIndex(JSCell*, JSGlobalObject*, unsigned propertyName);
unsigned length() const { return m_array->length(); }
ObservableArray& getConcreteArray() const { return *m_array; }
DECLARE_INFO;
static ArrayPrototype* createPrototype(VM&, JSGlobalObject& globalObject)
{
return globalObject.arrayPrototype();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(DerivedArrayType, StructureFlags), info(), NonArray);
}
private:
JSObservableArray(VM&, Structure*);
void finishCreation(VM&, Ref<ObservableArray>&&);
static JSC::GCClient::IsoSubspace* subspaceForImpl(JSC::VM&);
RefPtr<ObservableArray> m_array;
};
} // namespace JSC
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