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/*
* Copyright (C) 2013 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.
*/
#ifndef JSArrayIterator_h
#define JSArrayIterator_h
#include "JSObject.h"
namespace JSC {
enum ArrayIterationKind : uint32_t {
ArrayIterateKey,
ArrayIterateValue,
ArrayIterateKeyValue,
ArrayIterateSparseTag = 4,
ArrayIterateSparseKey,
ArrayIterateSparseValue,
ArrayIterateSparseKeyValue
};
class JSArrayIterator : public JSNonFinalObject {
public:
typedef JSNonFinalObject Base;
DECLARE_EXPORT_INFO;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static JSArrayIterator* create(ExecState* exec, Structure* structure, ArrayIterationKind kind, JSObject* iteratedObject)
{
VM& vm = exec->vm();
JSArrayIterator* instance = new (NotNull, allocateCell<JSArrayIterator>(vm.heap)) JSArrayIterator(vm, structure);
instance->finishCreation(vm, structure->globalObject(), kind, iteratedObject);
return instance;
}
ArrayIterationKind iterationKind() const { return m_iterationKind; }
JSObject* iteratedObject() const { return m_iteratedObject.get(); }
size_t nextIndex() const { return m_nextIndex; }
void setNextIndex(size_t nextIndex) { m_nextIndex = nextIndex; }
void finish() { m_nextIndex = std::numeric_limits<uint32_t>::max(); }
using JSNonFinalObject::arrayStorageOrNull;
static ptrdiff_t offsetOfIterationKind() { return OBJECT_OFFSETOF(JSArrayIterator, m_iterationKind); }
static ptrdiff_t offsetOfIteratedObject() { return OBJECT_OFFSETOF(JSArrayIterator, m_iteratedObject); }
static ptrdiff_t offsetOfNextIndex() { return OBJECT_OFFSETOF(JSArrayIterator, m_nextIndex); }
private:
JSArrayIterator(VM& vm, Structure* structure)
: Base(vm, structure)
, m_nextIndex(0)
{
}
void finishCreation(VM&, JSGlobalObject*, ArrayIterationKind, JSObject* iteratedObject);
static void visitChildren(JSCell*, SlotVisitor&);
ArrayIterationKind m_iterationKind;
WriteBarrier<JSObject> m_iteratedObject;
uint32_t m_nextIndex;
};
}
#endif // !defined(JSArrayIterator_h)
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