/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2005
 *
 *  Last modified:
 *     $Date: 2008-02-26 10:40:46 +0100 (Tue, 26 Feb 2008) $ by $Author: schulte $
 *     $Revision: 6311 $
 *
 *  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 MiniModel {

    /*
     * Operations for linear expressions
     *
     */
    template<class Var>
    forceinline
    LinRel<Var>::LinRel(void) {}

    template<class Var>
    forceinline
    LinRel<Var>::LinRel(const LinExpr<Var>& l, IntRelType irt0, 
                        const LinExpr<Var>& r)
      : e(l-r), irt(irt0) {}

    template<class Var>
    forceinline
    LinRel<Var>::LinRel(const LinExpr<Var>& l, IntRelType irt0, int r)
      : e(l-r), irt(irt0) {}

    template<class Var>
    forceinline
    LinRel<Var>::LinRel(int l, IntRelType irt0, const LinExpr<Var>& r)
      : e(l-r), irt(irt0) {}

    template<class Var>
    forceinline IntRelType
    LinRel<Var>::neg(IntRelType irt) {
      switch (irt) {
      case IRT_EQ: return IRT_NQ;
      case IRT_NQ: return IRT_EQ;
      case IRT_LQ: return IRT_GR;
      case IRT_LE: return IRT_GQ;
      case IRT_GQ: return IRT_LE;
      case IRT_GR: return IRT_LQ;
      default: GECODE_NEVER;
      }
      return IRT_LQ;
    }

    template<class Var>
    inline void
    LinRel<Var>::post(Space* home, bool t,
                      IntConLevel icl, PropKind pk) const {
      if (t) {
        e.post(home,irt,icl,pk);
      } else {
        e.post(home,neg(irt),icl,pk);
      }
    }

    template<class Var>
    forceinline void
    LinRel<Var>::post(Space* home, const BoolVar& b,
                      IntConLevel icl, PropKind pk) const {
      e.post(home,irt,b,icl,pk);
    }

  }

}

/*
 * Construction of linear relations
 *
 */
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator==(int l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_EQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator==(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_EQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator==(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_EQ,r);
}

inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator!=(int l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_NQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator!=(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_NQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator!=(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_NQ,r);
}

inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator<(int l,
          const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_LE,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator<(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
          int r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_LE,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator<(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
          const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_LE,r);
}

inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator<=(int l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_LQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator<=(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_LQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator<=(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_LQ,r);
}

inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator>(int l,
          const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_GR,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator>(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
          int r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_GR,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator>(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
          const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_GR,r);
}

inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator>=(int l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_GQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator>=(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_GQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::IntVar>
operator>=(const Gecode::MiniModel::LinExpr<Gecode::IntVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::IntVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::IntVar>(l,Gecode::IRT_GQ,r);
}


inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator==(int l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_EQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator==(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_EQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator==(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_EQ,r);
}

inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator!=(int l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_NQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator!=(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_NQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator!=(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_NQ,r);
}

inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator<(int l,
          const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_LE,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator<(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
          int r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_LE,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator<(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
          const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_LE,r);
}

inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator<=(int l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_LQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator<=(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_LQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator<=(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_LQ,r);
}

inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator>(int l,
          const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_GR,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator>(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
          int r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_GR,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator>(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
          const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_GR,r);
}

inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator>=(int l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_GQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator>=(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           int r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_GQ,r);
}
inline Gecode::MiniModel::LinRel<Gecode::BoolVar>
operator>=(const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& l,
           const Gecode::MiniModel::LinExpr<Gecode::BoolVar>& r) {
  return Gecode::MiniModel::LinRel<Gecode::BoolVar>(l,Gecode::IRT_GQ,r);
}


namespace Gecode {

  /*
   * Posting
   *
   */

  template<class Var>
  forceinline void
  post(Space* home, const MiniModel::LinRel<Var>& r, 
       IntConLevel icl, PropKind pk) {
    if (home->failed()) return;
    r.post(home,true,icl,pk);
  }
  forceinline void
  post(Space* home, bool r, IntConLevel, PropKind) {
    if (home->failed()) return;
    if (!r)
      home->fail();
  }

}

// STATISTICS: minimodel-any