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: |
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 | |