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      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
     67