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
34namespace JSC {
35 class CachedCall : public Noncopyable {
36 public:
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, function->scope().globalObject())
42 {
43 ASSERT(!function->isHostFunction());
44 m_closure = m_interpreter->prepareForRepeatCall(function->jsExecutable(), callFrame, function, argCount, function->scope().node(), exception);
45 m_valid = !*exception;
46 }
47
48 JSValue call()
49 {
50 ASSERT(m_valid);
51 return m_interpreter->execute(m_closure, exception: m_exception);
52 }
53 void setThis(JSValue v) { m_closure.setArgument(arg: 0, value: v); }
54 void setArgument(int n, JSValue v) { m_closure.setArgument(arg: n + 1, value: v); }
55
56 CallFrame* newCallFrame(ExecState* exec)
57 {
58 CallFrame* callFrame = m_closure.newCallFrame;
59 callFrame->setScopeChain(exec->scopeChain());
60 return callFrame;
61 }
62
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 JSValue* m_exception;
73 DynamicGlobalObjectScope m_globalObjectScope;
74 CallFrameClosure m_closure;
75 };
76}
77
78#endif
79

source code of qtscript/src/3rdparty/javascriptcore/JavaScriptCore/interpreter/CachedCall.h