/* * 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)