Contents

/*
 *  Main authors:
 *     Christian Schulte <[e-mail]>
 *
 *  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 {

  /**
   * \brief Range iterator for empty range
   *
   * Requires \code #include "gecode/iter.hh" \endcode
   * \ingroup FuncIterRanges
   */

  class Empty {
  public:
    /// \name Constructors and initialization
    //@{
    /// Default constructor
    Empty(void);
    /// Initialize
    void init(void);
    //@}

    /// \name Iteration control
    //@{
    /// Test whether iterator is still at a range or done
    bool operator()(void) const;
    /// Move iterator to next range (if possible)
    void operator++(void);
    //@}

    /// \name Range access
    //@{
    /// Return smallest value of range
    int min(void) const;
    /// Return largest value of range
    int max(void) const;
    /// Return width of range (distance between minimum and maximum)
    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

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
gecoder-with-gecode-0.7.1	ext/gecode-1.3.1/gecode/iter/ranges-empty.icc