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| 1 /* | |
| 2 * Copyright (C) 2008, 2010 Apple 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 * 3. Neither the name of Apple Inc. ("Apple") nor the names of its | |
| 14 * contributors may be used to endorse or promote products derived | |
| 15 * from this software without specific prior written permission. | |
| 16 * | |
| 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 | |
| 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #ifndef StringBuffer_h | |
| 30 #define StringBuffer_h | |
| 31 | |
| 32 #include <wtf/Assertions.h> | |
| 33 #include <wtf/unicode/Unicode.h> | |
| 34 #include <limits> | |
| 35 | |
| 36 namespace WTF { | |
| 37 | |
| 38 template <typename CharType> | |
| 39 class StringBuffer { | |
| 40 WTF_MAKE_NONCOPYABLE(StringBuffer); | |
| 41 public: | |
| 42 explicit StringBuffer(unsigned length) | |
| 43 : m_length(length) | |
| 44 { | |
| 45 RELEASE_ASSERT(m_length <= std::numeric_limits<unsigned>::max() / sizeof
(CharType)); | |
| 46 m_data = static_cast<CharType*>(fastMalloc(m_length * sizeof(CharType)))
; | |
| 47 } | |
| 48 | |
| 49 ~StringBuffer() | |
| 50 { | |
| 51 fastFree(m_data); | |
| 52 } | |
| 53 | |
| 54 void shrink(unsigned newLength) | |
| 55 { | |
| 56 ASSERT(newLength <= m_length); | |
| 57 m_length = newLength; | |
| 58 } | |
| 59 | |
| 60 void resize(unsigned newLength) | |
| 61 { | |
| 62 if (newLength > m_length) { | |
| 63 RELEASE_ASSERT(newLength <= std::numeric_limits<unsigned>::max() / s
izeof(UChar)); | |
| 64 m_data = static_cast<UChar*>(fastRealloc(m_data, newLength * sizeof(
UChar))); | |
| 65 } | |
| 66 m_length = newLength; | |
| 67 } | |
| 68 | |
| 69 unsigned length() const { return m_length; } | |
| 70 CharType* characters() { return m_data; } | |
| 71 | |
| 72 CharType& operator[](unsigned i) { ASSERT_WITH_SECURITY_IMPLICATION(i < m_le
ngth); return m_data[i]; } | |
| 73 | |
| 74 CharType* release() { CharType* data = m_data; m_data = 0; return data; } | |
| 75 | |
| 76 private: | |
| 77 unsigned m_length; | |
| 78 CharType* m_data; | |
| 79 }; | |
| 80 | |
| 81 } // namespace WTF | |
| 82 | |
| 83 using WTF::StringBuffer; | |
| 84 | |
| 85 #endif // StringBuffer_h | |
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Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk