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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 JSArgumentsIterator_h
#define JSArgumentsIterator_h
#include "Arguments.h"
namespace JSC {
class JSArgumentsIterator : 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 JSArgumentsIterator* create(VM& vm, Structure* structure, Arguments* arguments)
{
JSArgumentsIterator* instance = new (NotNull, allocateCell<JSArgumentsIterator>(vm.heap)) JSArgumentsIterator(vm, structure);
instance->finishCreation(vm, arguments);
return instance;
}
bool next(CallFrame* callFrame, JSValue& value)
{
if (m_nextIndex >= m_arguments->length(callFrame))
return false;
value = m_arguments->tryGetArgument(m_nextIndex++);
if (!value)
value = jsUndefined();
return true;
}
private:
static const unsigned StructureFlags = Base::StructureFlags;
JSArgumentsIterator(VM& vm, Structure* structure)
: Base(vm, structure)
, m_nextIndex(0)
{
}
void finishCreation(VM&, Arguments*);
WriteBarrier<Arguments> m_arguments;
size_t m_nextIndex;
};
}
#endif // !defined(JSArgumentsIterator_h)
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