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Side by Side Diff: public/platform/WebPrivateOwnPtr.h

Issue 15079005: Create a minimal webkit_common static library for use in browser process (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 7 years, 6 months ago
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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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