wrec/Quantifier.h

   1 /*
   2  * Copyright (C) 2008 Apple Inc. 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 Quantifier_h
  27 #define Quantifier_h
  28
  29 #include <wtf/Platform.h>
  30
  31 #if ENABLE(WREC)
  32
  33 #include <wtf/Assertions.h>
  34 #include <limits.h>
  35
  36 namespace JSC { namespace WREC {
  37
  38     struct Quantifier {
  39         enum Type {
  40             None,
  41             Greedy,
  42             NonGreedy,
  43             Error,
  44         };
  45
  46         Quantifier(Type type = None, unsigned min = 0, unsigned max = Infinity)
  47             : type(type)
  48             , min(min)
  49             , max(max)
  50         {
  51             ASSERT(min <= max);
  52         }
  53
  54         Type type;
  55
  56         unsigned min;
  57         unsigned max;
  58
  59         static const unsigned Infinity = UINT_MAX;
  60     };
  61
  62 } } // namespace JSC::WREC
  63
  64 #endif // ENABLE(WREC)
  65
  66 #endif // Quantifier_h