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1 /* | 1 #include "../common/WebPrivateOwnPtr.h" |
2 * Copyright (C) 2010 Google 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 * | |
8 * 1. Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * 2. Redistributions in binary form must reproduce the above copyright | |
11 * notice, this list of conditions and the following disclaimer in the | |
12 * documentation and/or other materials provided with the distribution. | |
13 * | |
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
24 */ | |
25 | |
26 #ifndef WebPrivateOwnPtr_h | |
27 #define WebPrivateOwnPtr_h | |
28 | |
29 #include "WebCommon.h" | |
30 | |
31 namespace WebKit { | |
32 | |
33 // This class is an implementation detail of the WebKit API. It exists | |
34 // to help simplify the implementation of WebKit interfaces that merely | |
35 // wrap a pointer to a WebCore class. It's similar to WebPrivatePtr, but it | |
36 // wraps a naked pointer rather than a reference counted. | |
37 // Note: you must call reset(0) on the implementation side in order to delete | |
38 // the WebCore pointer. | |
39 template <typename T> | |
40 class WebPrivateOwnPtr { | |
41 public: | |
42 WebPrivateOwnPtr() : m_ptr(0) {} | |
43 ~WebPrivateOwnPtr() { WEBKIT_ASSERT(!m_ptr); } | |
44 | |
45 #if WEBKIT_IMPLEMENTATION | |
46 explicit WebPrivateOwnPtr(T* ptr) | |
47 : m_ptr(ptr) | |
48 { | |
49 } | |
50 | |
51 void reset(T* ptr) | |
52 { | |
53 delete m_ptr; | |
54 m_ptr = ptr; | |
55 } | |
56 | |
57 T* get() const { return m_ptr; } | |
58 | |
59 T* operator->() const | |
60 { | |
61 WEBKIT_ASSERT(m_ptr); | |
62 return m_ptr; | |
63 } | |
64 #endif // WEBKIT_IMPLEMENTATION | |
65 | |
66 private: | |
67 T* m_ptr; | |
68 | |
69 WebPrivateOwnPtr(const WebPrivateOwnPtr&); | |
70 void operator=(const WebPrivateOwnPtr&); | |
71 }; | |
72 | |
73 } // namespace WebKit | |
74 | |
75 #endif | |
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