1 /*

     2  * This file is part of the DOM implementation for KDE.

     3  *

     4  * Copyright (C) 2000 Peter Kelly (pmk@post.com)

     5  * Copyright (C) 2005, 2006 Apple Computer, Inc.

     6  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)

     7  *

     8  * This library is free software; you can redistribute it and/or

     9  * modify it under the terms of the GNU Library General Public

    10  * License as published by the Free Software Foundation; either

    11  * version 2 of the License, or (at your option) any later version.

    12  *

    13  * This library is distributed in the hope that it will be useful,

    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    16  * Library General Public License for more details.

    17  *

    18  * You should have received a copy of the GNU Library General Public License

    19  * along with this library; see the file COPYING.LIB.  If not, write to

    20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    21  * Boston, MA 02110-1301, USA.

    22  *

    23  */

    24 

    25 #ifndef Tokenizer_h

    26 #define Tokenizer_h

    27 

    28 namespace WebCore {

    29 

    30     class SegmentedString;

    31 

    32     class Tokenizer {

    33     public:

    34         Tokenizer(bool viewSourceMode = false) 

    35             : m_parserStopped(false)

    36             , m_inViewSourceMode(viewSourceMode)

    37         {

    38         }

    39 

    40         virtual ~Tokenizer() { }

    41 

    42         // Script output must be prepended, while new data

    43         // received during executing a script must be appended, hence the

    44         // extra bool to be able to distinguish between both cases.

    45         // document.write() always uses false, while the loader uses true.

    46         virtual bool write(const SegmentedString&, bool appendData) = 0;

    47         virtual void finish() = 0;

    48         virtual bool isWaitingForScripts() const = 0;

    49         virtual void stopParsing() { m_parserStopped = true; }

    50         virtual bool processingData() const { return false; }

    51         virtual int executingScript() const { return 0; }

    52 

    53         virtual bool wantsRawData() const { return false; }

    54         virtual bool writeRawData(const char* data, int len) { return false; }

    55 

    56         bool inViewSourceMode() const { return m_inViewSourceMode; }

    57         void setInViewSourceMode(bool mode) { m_inViewSourceMode = mode; }

    58 

    59         virtual bool wellFormed() const { return true; }

    60 

    61         virtual int lineNumber() const { return -1; }

    62         virtual int columnNumber() const { return -1; }

    63         

    64         virtual void executeScriptsWaitingForStylesheets() {}

    65 

    66         virtual bool isHTMLTokenizer() const { return false; }

    67 

    68     protected:

    69         // The tokenizer has buffers, so parsing may continue even after

    70         // it stops receiving data. We use m_parserStopped to stop the tokenizer

    71         // even when it has buffered data.

    72         bool m_parserStopped;

    73         bool m_inViewSourceMode;

    74     };

    75 

    76 } // namespace WebCore

    77 

    78 #endif // Tokenizer_h