1/*
2 * Copyright (C) 2009, 2013 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 "ExceptionHelpers.h"
31#include "JSFunction.h"
32#include "JSGlobalObject.h"
33#include "Interpreter.h"
34#include "ProtoCallFrame.h"
35#include "VMEntryScope.h"
36
37namespace JSC {
38 class CachedCall {
39 WTF_MAKE_NONCOPYABLE(CachedCall); WTF_MAKE_FAST_ALLOCATED;
40 public:
41 CachedCall(CallFrame* callFrame, JSFunction* function, int argumentCount)
42 : m_valid(false)
43 , m_interpreter(callFrame->interpreter())
44 , m_entryScope(callFrame->vm(), function->scope()->globalObject())
45 {
46 ASSERT(!function->isHostFunctionNonInline());
47 if (callFrame->vm().isSafeToRecurse()) {
48 m_arguments.resize(argumentCount);
49 m_closure = m_interpreter->prepareForRepeatCall(function->jsExecutable(), callFrame, &m_protoCallFrame, function, argumentCount + 1, function->scope(), m_arguments.data());
50 } else
51 throwStackOverflowError(callFrame);
52 m_valid = !callFrame->hadException();
53 }
54
55 JSValue call()
56 {
57 ASSERT(m_valid);
58 return m_interpreter->execute(m_closure);
59 }
60 void setThis(JSValue v) { m_protoCallFrame.setThisValue(v); }
61 void setArgument(int n, JSValue v) { m_protoCallFrame.setArgument(n, v); }
62
63 private:
64 bool m_valid;
65 Interpreter* m_interpreter;
66 VMEntryScope m_entryScope;
67 ProtoCallFrame m_protoCallFrame;
68 Vector<JSValue> m_arguments;
69 CallFrameClosure m_closure;
70 };
71}
72
73#endif
74