third_party/WebKit/Source/core/svg/SVGPathByteStream.h

   1 /*
   2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifndef SVGPathByteStream_h
  21 #define SVGPathByteStream_h
  22
  23 #include "wtf/Noncopyable.h"
  24 #include "wtf/PassOwnPtr.h"
  25 #include "wtf/Vector.h"
  26
  27 namespace blink {
  28
  29 template<typename DataType>
  30 union ByteType {
  31     DataType value;
  32     unsigned char bytes[sizeof(DataType)];
  33 };
  34
  35 class SVGPathByteStream {
  36     WTF_MAKE_FAST_ALLOCATED(SVGPathByteStream);
  37 public:
  38     static PassOwnPtr<SVGPathByteStream> create()
  39     {
  40         return adoptPtr(new SVGPathByteStream);
  41     }
  42
  43     PassOwnPtr<SVGPathByteStream> copy() const
  44     {
  45         return adoptPtr(new SVGPathByteStream(m_data));
  46     }
  47
  48     typedef Vector<unsigned char> Data;
  49     typedef Data::const_iterator DataIterator;
  50
  51     DataIterator begin() const { return m_data.begin(); }
  52     DataIterator end() const { return m_data.end(); }
  53     void append(unsigned char byte) { m_data.append(byte); }
  54     void append(SVGPathByteStream* other) { m_data.appendVector(other->m_data); }
  55     void clear() { m_data.clear(); }
  56     void reserveInitialCapacity(size_t size) { m_data.reserveInitialCapacity(size); }
  57     void shrinkToFit() { m_data.shrinkToFit(); }
  58     bool isEmpty() const { return m_data.isEmpty(); }
  59     unsigned size() const { return m_data.size(); }
  60
  61 private:
  62     SVGPathByteStream() { }
  63     SVGPathByteStream(const Data& data)
  64         : m_data(data)
  65     {
  66     }
  67
  68     Data m_data;
  69 };
  70
  71 } // namespace blink
  72
  73 #endif // SVGPathByteStream_h