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1 /* Cycript - Inlining/Optimizing JavaScript Compiler
2 * Copyright (C) 2009 Jay Freeman (saurik)
3 */
4
5 /* Modified BSD License {{{ */
6 /*
7 * Redistribution and use in source and binary
8 * forms, with or without modification, are permitted
9 * provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the
12 * above copyright notice, this list of conditions
13 * and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the
15 * above copyright notice, this list of conditions
16 * and the following disclaimer in the documentation
17 * and/or other materials provided with the
18 * distribution.
19 * 3. The name of the author may not be used to endorse
20 * or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
25 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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36 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 */
38 /* }}} */
39
40 #ifndef CYLOCAL_HPP
41 #define CYLOCAL_HPP
42
43 template <typename Type_>
44 struct CYLocal {
45 Type_ last_;
46
47 CYLocal(Type_ next) {
48 Type_ &top(Top());
49 last_ = top;
50 top = next;
51 }
52
53 ~CYLocal() {
54 Top() = last_;
55 }
56
57 static Type_ &Top() {
58 static __thread Type_ top;
59 return top;
60 }
61 };
62
63 #endif/*CYLOCAL_HPP*/