ranges-array.hpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2006
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  Permission is hereby granted, free of charge, to any person obtaining
 *  a copy of this software and associated documentation files (the
 *  "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *
 *  The above copyright notice and this permission notice shall be
 *  included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

namespace Gecode { namespace Iter { namespace Ranges {

  class Array  {
  public:
    class Range {
    public:
      int min; 
      int max; 
    };
  protected:
    Range* r;
    unsigned int c;
    unsigned int n;
  public:


    Array(void);
    Array(Range* r, unsigned int n);
    Array(Range* r, int n);
    void init(Range* r, unsigned int n);
    void init(Range* r, int n);



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



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


  forceinline
  Array::Array(void) {}

  forceinline
  Array::Array(Range* r0, unsigned int n0)
    : r(r0), c(0U), n(n0) {}

  forceinline
  Array::Array(Range* r0, int n0)
    : r(r0), c(0U), n(static_cast<unsigned int>(n0)) {}

  forceinline void
  Array::init(Range* r0, unsigned int n0) {
    r=r0; c=0U; n=n0;
  }

  forceinline void
  Array::init(Range* r0, int n0) {
    r=r0; c=0U; n=static_cast<unsigned int>(n0);
  }

  forceinline void
  Array::operator ++(void) {
    c++;
  }
  forceinline bool
  Array::operator ()(void) const {
    return c < n;
  }

  forceinline void
  Array::reset(void) {
    c=0U;
  }

  forceinline int
  Array::min(void) const {
    return r[c].min;
  }
  forceinline int
  Array::max(void) const {
    return r[c].max;
  }
  forceinline unsigned int
  Array::width(void) const {
    return static_cast<unsigned int>(r[c].max-r[c].min)+1;
  }

}}}

// STATISTICS: iter-any