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 { 36 WTF_MAKE_NONCOPYABLE(CachedCall); WTF_MAKE_FAST_ALLOCATED; 37 public: CachedCall(CallFrame * callFrame,JSFunction * function,int argCount)38 CachedCall(CallFrame* callFrame, JSFunction* function, int argCount) 39 : m_valid(false) 40 , m_interpreter(callFrame->interpreter()) 41 , m_globalObjectScope(callFrame->globalData(), function->scope()->globalObject.get()) 42 { 43 ASSERT(!function->isHostFunction()); 44 m_closure = m_interpreter->prepareForRepeatCall(function->jsExecutable(), callFrame, function, argCount, function->scope()); 45 m_valid = !callFrame->hadException(); 46 } 47 call()48 JSValue call() 49 { 50 ASSERT(m_valid); 51 return m_interpreter->execute(m_closure); 52 } setThis(JSValue v)53 void setThis(JSValue v) { m_closure.setArgument(0, v); } setArgument(int n,JSValue v)54 void setArgument(int n, JSValue v) { m_closure.setArgument(n + 1, v); } 55 newCallFrame(ExecState * exec)56 CallFrame* newCallFrame(ExecState* exec) 57 { 58 CallFrame* callFrame = m_closure.newCallFrame; 59 callFrame->setScopeChain(exec->scopeChain()); 60 return callFrame; 61 } 62 ~CachedCall()63 ~CachedCall() 64 { 65 if (m_valid) 66 m_interpreter->endRepeatCall(m_closure); 67 } 68 69 private: 70 bool m_valid; 71 Interpreter* m_interpreter; 72 DynamicGlobalObjectScope m_globalObjectScope; 73 CallFrameClosure m_closure; 74 }; 75 } 76 77 #endif 78