runtime/RegExp.h

   1 /*
   2  *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
   4  *  Copyright (C) 2009 Torch Mobile, Inc.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Lesser General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Lesser General Public
  17  *  License along with this library; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifndef RegExp_h
  23 #define RegExp_h
  24
  25 #include "UString.h"
  26 #include "ExecutableAllocator.h"
  27 #include <wtf/Forward.h>
  28 #include <wtf/RefCounted.h>
  29 #include "yarr/RegexJIT.h"
  30 #include "yarr/RegexInterpreter.h"
  31
  32 struct JSRegExp;
  33
  34 namespace JSC {
  35
  36     class JSGlobalData;
  37
  38     class RegExp : public RefCounted<RegExp> {
  39     public:
  40         static PassRefPtr<RegExp> create(JSGlobalData* globalData, const UString& pattern);
  41         static PassRefPtr<RegExp> create(JSGlobalData* globalData, const UString& pattern, const UString& flags);
  42 #if !ENABLE(YARR)
  43         ~RegExp();
  44 #endif
  45
  46         bool global() const { return m_flagBits & Global; }
  47         bool ignoreCase() const { return m_flagBits & IgnoreCase; }
  48         bool multiline() const { return m_flagBits & Multiline; }
  49
  50         const UString& pattern() const { return m_pattern; }
  51
  52         bool isValid() const { return !m_constructionError; }
  53         const char* errorMessage() const { return m_constructionError; }
  54
  55         int match(const UString&, int startOffset, Vector<int, 32>* ovector = 0);
  56         unsigned numSubpatterns() const { return m_numSubpatterns; }
  57
  58     private:
  59         RegExp(JSGlobalData* globalData, const UString& pattern);
  60         RegExp(JSGlobalData* globalData, const UString& pattern, const UString& flags);
  61
  62         void compile(JSGlobalData*);
  63
  64         enum FlagBits { Global = 1, IgnoreCase = 2, Multiline = 4 };
  65
  66         UString m_pattern; // FIXME: Just decompile m_regExp instead of storing this.
  67         int m_flagBits;
  68         const char* m_constructionError;
  69         unsigned m_numSubpatterns;
  70         UString m_lastMatchString;
  71         int m_lastMatchStart;
  72         Vector<int, 32> m_lastOVector;
  73
  74 #if ENABLE(YARR_JIT)
  75         Yarr::RegexCodeBlock m_regExpJITCode;
  76 #elif ENABLE(YARR)
  77         OwnPtr<Yarr::BytecodePattern> m_regExpBytecode;
  78 #else
  79         JSRegExp* m_regExp;
  80 #endif
  81     };
  82
  83 } // namespace JSC
  84
  85 #endif // RegExp_h