brancher-print.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, 2017
 *
 *  Last modified:
 *     $Date: 2017-04-01 20:27:10 +0200 (Sat, 01 Apr 2017) $ by $Author: schulte $
 *     $Revision: 15623 $
 *
 *  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
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 *  permit persons to whom the Software is furnished to do so, subject to
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#include <functional>

namespace Gecode {

  template<class Var, class Val>
  using VarValPrint = std::function<void(const Space& home, const Brancher& b,
                                         unsigned int a,
                                         Var x, int i, const Val& m,
                                         std::ostream& o)>;
 
  template<class View, class Val>
  class BrancherPrint {
  public:
    typedef typename View::VarType Var;
  protected:
    SharedData<VarValPrint<Var,Val>> p;
  public:
    BrancherPrint(VarValPrint<Var,Val> vvp);
    BrancherPrint(Space& home, bool shared, BrancherPrint& bp);
    operator bool(void) const;
    void operator ()(const Space& home, const Brancher& b,
                     unsigned int a,
                     View x, int i, const Val& m,
                     std::ostream& o) const;
    bool notice(void) const;
    void dispose(Space& home);
  };

  template<class View, class Val>
  class BrancherNoPrint {
  public:
    typedef typename View::VarType Var;
  public:
    BrancherNoPrint(VarValPrint<Var,Val> vvp);
    BrancherNoPrint(Space& home, bool shared, BrancherNoPrint& bp);
    operator bool(void) const;
    void operator ()(const Space& home, const Brancher& b,
                     unsigned int a,
                     View x, int i, const Val& m,
                     std::ostream& o) const;
    bool notice(void) const;
    void dispose(Space& home);
  };



  template<class View, class Val>
  forceinline
  BrancherPrint<View,Val>::BrancherPrint(VarValPrint<Var,Val> vvp) : p(vvp) {
    if (!vvp)
      throw Gecode::InvalidFunction("BrancherPrint::BrancherPrint");
  }
  
  template<class View, class Val>
  forceinline
  BrancherPrint<View,Val>::BrancherPrint(Space& home, bool shared,
                                         BrancherPrint<View,Val>& bp) {
    p.update(home,shared,bp.p);
  }

  template<class View, class Val>
  forceinline
  BrancherPrint<View,Val>::operator bool(void) const {
    return true;
  }

  template<class View, class Val>
  forceinline void
  BrancherPrint<View,Val>::operator ()(const Space& home, const Brancher& b,
                                       unsigned int a,
                                       View x, int i, const Val& m,
                                       std::ostream& o) const {
    GECODE_VALID_FUNCTION(p());
    Var xv(x.varimp());
    p()(home,b,a,xv,i,m,o);
  }

  template<class View, class Val>
  forceinline bool
  BrancherPrint<View,Val>::notice(void) const {
    return true;
  }

  template<class View, class Val>
  forceinline void
  BrancherPrint<View,Val>::dispose(Space&) {
    p.~SharedData<VarValPrint<Var,Val>>();
  }


  template<class View, class Val>
  forceinline
  BrancherNoPrint<View,Val>::BrancherNoPrint(VarValPrint<Var,Val> vvp) {
    assert(!vvp);
  }
  
  template<class View, class Val>
  forceinline
  BrancherNoPrint<View,Val>::BrancherNoPrint(Space&, bool,
                                             BrancherNoPrint<View,Val>&) {}

  template<class View, class Val>
  forceinline
  BrancherNoPrint<View,Val>::operator bool(void) const {
    return false;
  }

  template<class View, class Val>
  forceinline void
  BrancherNoPrint<View,Val>::operator ()(const Space&, const Brancher&,
                                         unsigned int,
                                         View, int, const Val&,
                                         std::ostream&) const {}
  template<class View, class Val>
  forceinline bool
  BrancherNoPrint<View,Val>::notice(void) const {
    return false;
  }

  template<class View, class Val>
  forceinline void
  BrancherNoPrint<View,Val>::dispose(Space&) {}

}

// STATISTICS: kernel-branch