1 /*
2  * Copyright (C) 2010 Adam Barth. 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  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #ifndef HTMLSourceTracker_h
27 #define HTMLSourceTracker_h
28 
29 #include "HTMLInputStream.h"
30 #include "HTMLToken.h"
31 
32 namespace WebCore {
33 
34 class HTMLSourceTracker {
35     WTF_MAKE_NONCOPYABLE(HTMLSourceTracker);
36 public:
37     HTMLSourceTracker();
38 
39     // FIXME: Once we move "end" into HTMLTokenizer, rename "start" to
40     // something that makes it obvious that this method can be called multiple
41     // times.
42     void start(const HTMLInputStream&, HTMLToken&);
43     void end(const HTMLInputStream&, HTMLToken&);
44 
45     String sourceForToken(const HTMLToken&);
46 
47 private:
48     String m_sourceFromPreviousSegments;
49     SegmentedString m_source;
50     String m_cachedSourceForToken;
51 };
52 
53 }
54 
55 #endif
56