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      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 "core/html/parser/HTMLToken.h"
     30 #include "platform/text/SegmentedString.h"
     31 
     32 namespace WebCore {
     33 
     34 class HTMLTokenizer;
     35 
     36 class HTMLSourceTracker {
     37     WTF_MAKE_NONCOPYABLE(HTMLSourceTracker);
     38 public:
     39     HTMLSourceTracker();
     40 
     41     // FIXME: Once we move "end" into HTMLTokenizer, rename "start" to
     42     // something that makes it obvious that this method can be called multiple
     43     // times.
     44     void start(SegmentedString&, HTMLTokenizer*, HTMLToken&);
     45     void end(SegmentedString&, HTMLTokenizer*, HTMLToken&);
     46 
     47     String sourceForToken(const HTMLToken&);
     48 
     49 private:
     50     SegmentedString m_previousSource;
     51     SegmentedString m_currentSource;
     52 
     53     String m_cachedSourceForToken;
     54 };
     55 
     56 }
     57 
     58 #endif
     59