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Diffstat (limited to 'JavaScriptCore/wtf/text/StringBuffer.h')
-rw-r--r-- | JavaScriptCore/wtf/text/StringBuffer.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/JavaScriptCore/wtf/text/StringBuffer.h b/JavaScriptCore/wtf/text/StringBuffer.h new file mode 100644 index 0000000..353a44a --- /dev/null +++ b/JavaScriptCore/wtf/text/StringBuffer.h @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Inc. ("Apple") nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef StringBuffer_h +#define StringBuffer_h + +#include <wtf/Assertions.h> +#include <wtf/Noncopyable.h> +#include <wtf/unicode/Unicode.h> + +namespace WebCore { + +class StringBuffer : public Noncopyable { +public: + explicit StringBuffer(unsigned length) + : m_length(length) + , m_data(static_cast<UChar*>(fastMalloc(length * sizeof(UChar)))) + { + } + ~StringBuffer() + { + fastFree(m_data); + } + + void shrink(unsigned newLength) + { + ASSERT(newLength <= m_length); + m_length = newLength; + } + + void resize(unsigned newLength) + { + if (newLength > m_length) + m_data = static_cast<UChar*>(fastRealloc(m_data, newLength * sizeof(UChar))); + m_length = newLength; + } + + unsigned length() const { return m_length; } + UChar* characters() { return m_data; } + + UChar& operator[](unsigned i) { ASSERT(i < m_length); return m_data[i]; } + + UChar* release() { UChar* data = m_data; m_data = 0; return data; } + +private: + unsigned m_length; + UChar* m_data; +}; + +} + +#endif |