1 /* 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 * 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 GOOGLE 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 GOOGLE 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 IgnoreDestructiveWriteCountIncrementer_h 27 #define IgnoreDestructiveWriteCountIncrementer_h 28 29 #include "Document.h" 30 31 namespace WebCore { 32 33 class IgnoreDestructiveWriteCountIncrementer { 34 WTF_MAKE_NONCOPYABLE(IgnoreDestructiveWriteCountIncrementer); 35 public: 36 explicit IgnoreDestructiveWriteCountIncrementer(Document* document) 37 : m_count(document ? &document->m_ignoreDestructiveWriteCount : 0) 38 { 39 if (!m_count) 40 return; 41 ++(*m_count); 42 } 43 44 ~IgnoreDestructiveWriteCountIncrementer() 45 { 46 if (!m_count) 47 return; 48 --(*m_count); 49 } 50 51 private: 52 unsigned* m_count; 53 }; 54 55 } 56 57 #endif 58
