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 CachedCall_h 27 #define CachedCall_h 28 29 #include "CallFrameClosure.h" 30 #include "JSFunction.h" 31 #include "JSGlobalObject.h" 32 #include "Interpreter.h" 33 34 namespace JSC { 35 class CachedCall : public Noncopyable { 36 public: CachedCall(CallFrame * callFrame,JSFunction * function,int argCount,JSValue * exception)37 CachedCall(CallFrame* callFrame, JSFunction* function, int argCount, JSValue* exception) 38 : m_valid(false) 39 , m_interpreter(callFrame->interpreter()) 40 , m_exception(exception) 41 , m_globalObjectScope(callFrame, callFrame->globalData().dynamicGlobalObject ? callFrame->globalData().dynamicGlobalObject : function->scope().node()->globalObject()) 42 { 43 m_closure = m_interpreter->prepareForRepeatCall(function->body(), callFrame, function, argCount, function->scope().node(), exception); 44 m_valid = !*exception; 45 } 46 call()47 JSValue call() 48 { 49 ASSERT(m_valid); 50 return m_interpreter->execute(m_closure, m_exception); 51 } setThis(JSValue v)52 void setThis(JSValue v) { m_closure.setArgument(0, v); } setArgument(int n,JSValue v)53 void setArgument(int n, JSValue v) { m_closure.setArgument(n + 1, v); } newCallFrame()54 CallFrame* newCallFrame() { return m_closure.newCallFrame; } ~CachedCall()55 ~CachedCall() 56 { 57 if (m_valid) 58 m_interpreter->endRepeatCall(m_closure); 59 } 60 61 private: 62 bool m_valid; 63 Interpreter* m_interpreter; 64 JSValue* m_exception; 65 DynamicGlobalObjectScope m_globalObjectScope; 66 CallFrameClosure m_closure; 67 }; 68 } 69 70 #endif 71