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 "WREC.h"
  27 #include "ExecutableAllocator.h"
  28 #include <wtf/Forward.h>
  29 #include <wtf/RefCounted.h>
  30 #include "yarr/RegexJIT.h"
  31 #include "yarr/RegexInterpreter.h"
  32
  33 struct JSRegExp;
  34
  35 namespace JSC {
  36
  37     class JSGlobalData;
  38
  39     class RegExp : public RefCounted<RegExp> {
  40     public:
  41         static PassRefPtr<RegExp> create(JSGlobalData* globalData, const UString& pattern);
  42         static PassRefPtr<RegExp> create(JSGlobalData* globalData, const UString& pattern, const UString& flags);
  43 #if !ENABLE(YARR)
  44         ~RegExp();
  45 #endif
  46
  47         bool global() const { return m_flagBits & Global; }
  48         bool ignoreCase() const { return m_flagBits & IgnoreCase; }
  49         bool multiline() const { return m_flagBits & Multiline; }
  50
  51         const UString& pattern() const { return m_pattern; }
  52
  53         bool isValid() const { return !m_constructionError; }
  54         const char* errorMessage() const { return m_constructionError; }
  55
  56         int match(const UString&, int startOffset, Vector<int, 32>* ovector = 0);
  57         unsigned numSubpatterns() const { return m_numSubpatterns; }
  58
  59     private:
  60         RegExp(JSGlobalData* globalData, const UString& pattern);
  61         RegExp(JSGlobalData* globalData, const UString& pattern, const UString& flags);
  62
  63         void compile(JSGlobalData*);
  64
  65         enum FlagBits { Global = 1, IgnoreCase = 2, Multiline = 4 };
  66
  67         UString m_pattern; // FIXME: Just decompile m_regExp instead of storing this.
  68         int m_flagBits;
  69         const char* m_constructionError;
  70         unsigned m_numSubpatterns;
  71
  72 #if ENABLE(YARR_JIT)
  73         Yarr::RegexCodeBlock m_regExpJITCode;
  74 #elif ENABLE(YARR)
  75         OwnPtr<Yarr::BytecodePattern> m_regExpBytecode;
  76 #else
  77 #if ENABLE(WREC)
  78         WREC::CompiledRegExp m_wrecFunction;
  79         RefPtr<ExecutablePool> m_executablePool;
  80 #endif
  81         JSRegExp* m_regExp;
  82 #endif
  83     };
  84
  85 } // namespace JSC
  86
  87 #endif // RegExp_h