2 * Copyright (C) 2008, 2010 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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11 * notice, this list of conditions and the following disclaimer in the
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14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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29 #ifndef StringBuffer_h
30 #define StringBuffer_h
32 #include <wtf/Assertions.h>
33 #include <wtf/unicode/Unicode.h>
39 WTF_MAKE_NONCOPYABLE(StringBuffer);
41 explicit StringBuffer(unsigned length)
44 if (m_length > std::numeric_limits<unsigned>::max() / sizeof(UChar))
46 m_data = static_cast<UChar*>(fastMalloc(m_length * sizeof(UChar)));
54 void shrink(unsigned newLength)
56 ASSERT(newLength <= m_length);
60 void resize(unsigned newLength)
62 if (newLength > m_length) {
63 if (newLength > std::numeric_limits<unsigned>::max() / sizeof(UChar))
65 m_data = static_cast<UChar*>(fastRealloc(m_data, newLength * sizeof(UChar)));
70 unsigned length() const { return m_length; }
71 UChar* characters() { return m_data; }
73 UChar& operator[](unsigned i) { ASSERT(i < m_length); return m_data[i]; }
75 UChar* release() { UChar* data = m_data; m_data = 0; return data; }
84 using WTF::StringBuffer;
86 #endif // StringBuffer_h