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      1 /*
      2  * Copyright (C) 2011 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 LevelDBSlice_h
     27 #define LevelDBSlice_h
     28 
     29 #if ENABLE(LEVELDB)
     30 
     31 #include "PlatformString.h"
     32 #include <Vector.h>
     33 
     34 namespace WebCore {
     35 
     36 class LevelDBSlice {
     37 public:
     38     LevelDBSlice(const char* begin, const char* end)
     39         : m_begin(begin)
     40         , m_end(end)
     41     {
     42         ASSERT(m_end >= m_begin);
     43     }
     44 
     45     LevelDBSlice(const Vector<char>& v)
     46         : m_begin(v.data())
     47         , m_end(m_begin + v.size())
     48     {
     49         ASSERT(m_end >= m_begin);
     50     }
     51 
     52     ~LevelDBSlice()
     53     {
     54     }
     55 
     56     const char* begin() const { return m_begin; }
     57     const char* end() const { return m_end; }
     58 
     59 private:
     60     const char* m_begin;
     61     const char* m_end;
     62 };
     63 
     64 } // namespace WebCore
     65 
     66 #endif // ENABLE(LEVELDB)
     67 #endif // LevelDBSlice_h
     68