iter-prune-val.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, 2011
 *
 *  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
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 *  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.
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namespace Gecode { namespace Int { namespace ViewValGraph {

  template<class View>
  forceinline
  IterPruneVal<View>::IterPruneVal(ViewNode<View>* y)
    : x(y), e(y->val_edges()) {
    while ((e != NULL) && e->used(x))
      e = e->next_edge();
  }
  template<class View>
  forceinline bool
  IterPruneVal<View>::operator ()(void) const {
    return e != NULL;
  }
  template<class View>
  forceinline void
  IterPruneVal<View>::operator ++(void) {
    assert(!e->used(x));
    do {
      e = e->next_edge();
    } while ((e != NULL) && e->used(x));
  }
  template<class View>
  forceinline int
  IterPruneVal<View>::val(void) const {
    assert(!e->used(x));
    return e->val(x)->val();
  }

}}}

// STATISTICS: int-prop