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#if ENABLE(SVG)
24#include <wtf/Noncopyable.h>
25#include <wtf/PassOwnPtr.h>
26#include <wtf/Vector.h>
27
28namespace WebCore {
29
30// Type definitions for the byte stream data
31typedef union {
32    bool value;
33    unsigned char bytes[sizeof(bool)];
34} BoolByte;
35
36typedef union {
37    float value;
38    unsigned char bytes[sizeof(float)];
39} FloatByte;
40
41typedef union {
42    unsigned short value;
43    unsigned char bytes[sizeof(unsigned short)];
44} UnsignedShortByte;
45
46class SVGPathByteStream {
47    WTF_MAKE_FAST_ALLOCATED;
48public:
49    static PassOwnPtr<SVGPathByteStream> create()
50    {
51        return adoptPtr(new SVGPathByteStream);
52    }
53
54    PassOwnPtr<SVGPathByteStream> copy()
55    {
56        return adoptPtr(new SVGPathByteStream(m_data));
57    }
58
59    typedef Vector<unsigned char> Data;
60    typedef Data::const_iterator DataIterator;
61
62    DataIterator begin() { return m_data.begin(); }
63    DataIterator end() { return m_data.end(); }
64    void append(unsigned char byte) { m_data.append(byte); }
65    void append(SVGPathByteStream* other)
66    {
67        for (DataIterator it = other->begin(); it != other->end(); ++it)
68            append(*it);
69    }
70    void clear() { m_data.clear(); }
71    bool isEmpty() const { return !m_data.size(); }
72    unsigned size() const { return m_data.size(); }
73
74    // Only defined to let SVGAnimatedPathAnimator use the standard list code paths - this method is never called.
75    void resize(unsigned) { }
76
77private:
78    SVGPathByteStream() { }
79    SVGPathByteStream(Data& data)
80        : m_data(data)
81    {
82    }
83
84    Data m_data;
85};
86
87} // namespace WebCore
88
89#endif // ENABLE(SVG)
90#endif // SVGPathByteStream_h
91