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ranges-empty.icc

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/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2004
 *
 *  Last modified:
 *     $Date: 2006-07-19 14:57:38 +0200 (Wed, 19 Jul 2006) $ by $Author: schulte $
 *     $Revision: 3413 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  See the file "LICENSE" for information on usage and
 *  redistribution of this file, and for a
 *     DISCLAIMER OF ALL WARRANTIES.
 *
 */

namespace Gecode { namespace Iter { namespace Ranges {

  class Empty {
  public:


    Empty(void);
    void init(void);



    bool operator()(void) const;
    void operator++(void);



    int min(void) const;
    int max(void) const;
    unsigned int width(void) const;
  };


  forceinline
  Empty::Empty(void) {}

  forceinline void
  Empty::init(void) {}

  forceinline void
  Empty::operator++(void) {
    GECODE_NEVER;
  }

  forceinline bool
  Empty::operator()(void) const {
    return false;
  }

  forceinline int
  Empty::min(void) const {
    GECODE_NEVER;
    return 0;
  }
  forceinline int
  Empty::max(void) const {
    GECODE_NEVER;
    return 0;
  }
  forceinline unsigned int
  Empty::width(void) const {
    GECODE_NEVER;
    return 0;
  }

}}}

// STATISTICS: iter-any