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-rw-r--r--Source/JavaScriptCore/runtime/GeneratorFrame.h90
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diff --git a/Source/JavaScriptCore/runtime/GeneratorFrame.h b/Source/JavaScriptCore/runtime/GeneratorFrame.h
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-/*
- * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
- *
- * 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. AND ITS CONTRIBUTORS ``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 ITS 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 GeneratorFrame_h
-#define GeneratorFrame_h
-
-#include "JSCell.h"
-#include <wtf/FastBitVector.h>
-
-namespace JSC {
-
-class GeneratorFrame : public JSCell {
- friend class JIT;
-#if ENABLE(DFG_JIT)
- friend class DFG::SpeculativeJIT;
- friend class DFG::JITCompiler;
-#endif
- friend class VM;
-public:
- typedef JSCell Base;
- static const unsigned StructureFlags = StructureIsImmortal | Base::StructureFlags;
-
- DECLARE_EXPORT_INFO;
-
- static GeneratorFrame* create(VM&, size_t numberOfCalleeLocals);
-
- WriteBarrierBase<Unknown>* locals()
- {
- return bitwise_cast<WriteBarrierBase<Unknown>*>(bitwise_cast<char*>(this) + offsetOfLocals());
- }
-
- WriteBarrierBase<Unknown>& localAt(size_t index)
- {
- ASSERT(index < m_numberOfCalleeLocals);
- return locals()[index];
- }
-
- static size_t offsetOfLocals()
- {
- return WTF::roundUpToMultipleOf<sizeof(WriteBarrier<Unknown>)>(sizeof(GeneratorFrame));
- }
-
- static size_t allocationSizeForLocals(unsigned numberOfLocals)
- {
- return offsetOfLocals() + numberOfLocals * sizeof(WriteBarrier<Unknown>);
- }
-
- static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
-
- void save(ExecState*, const FastBitVector& liveCalleeLocals);
- void resume(ExecState*, const FastBitVector& liveCalleeLocals);
-
-private:
- GeneratorFrame(VM&, size_t numberOfCalleeLocals);
-
- size_t m_numberOfCalleeLocals;
-
- friend class LLIntOffsetsExtractor;
-
- void finishCreation(VM&);
-
-protected:
- static void visitChildren(JSCell*, SlotVisitor&);
-};
-
-} // namespace JSC
-
-#endif // GeneratorFrame_h