1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef CallFrameClosure_h 27 #define CallFrameClosure_h 28 29 namespace JSC { 30 31 struct CallFrameClosure { 32 CallFrame* oldCallFrame; 33 CallFrame* newCallFrame; 34 JSFunction* function; 35 FunctionExecutable* functionExecutable; 36 JSGlobalData* globalData; 37 Register* oldEnd; 38 ScopeChainNode* scopeChain; 39 int expectedParams; 40 int providedParams; 41 setArgumentCallFrameClosure42 void setArgument(int arg, JSValue value) 43 { 44 if (arg < expectedParams) 45 newCallFrame[arg - RegisterFile::CallFrameHeaderSize - expectedParams] = value; 46 else 47 newCallFrame[arg - RegisterFile::CallFrameHeaderSize - expectedParams - providedParams] = value; 48 } 49 resetCallFrameCallFrameClosure50 void resetCallFrame() 51 { 52 newCallFrame->setScopeChain(scopeChain); 53 for (int i = providedParams; i < expectedParams; ++i) 54 newCallFrame[i - RegisterFile::CallFrameHeaderSize - expectedParams] = jsUndefined(); 55 } 56 }; 57 58 } 59 60 #endif 61