iter.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, 2009
 *
 *  Last modified:
 *     $Date: 2011-05-25 16:56:41 +0200 (Wed, 25 May 2011) $ by $Author: schulte $
 *     $Revision: 12022 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
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#include <algorithm>

namespace Gecode { namespace Int {

  template<class TaskView, SortTaskOrder sto, bool inc>
  forceinline
  TaskViewIter<TaskView,sto,inc>::TaskViewIter(void) {}

  template<class TaskView, SortTaskOrder sto, bool inc>
  forceinline
  TaskViewIter<TaskView,sto,inc>
  ::TaskViewIter(Region& r, const TaskViewArray<TaskView>& t)
    : map(r.alloc<int>(t.size())), i(t.size()-1) {
    sort<TaskView,sto,!inc>(map,t);
  }

  template<class TaskView, SortTaskOrder sto, bool inc>
  forceinline bool
  TaskViewIter<TaskView,sto,inc>::operator ()(void) const {
    return i>=0;
  }
  template<class TaskView, SortTaskOrder sto, bool inc>
  forceinline int
  TaskViewIter<TaskView,sto,inc>::left(void) const {
    return i+1;
  }
  template<class TaskView, SortTaskOrder sto, bool inc>
  forceinline void
  TaskViewIter<TaskView,sto,inc>::operator ++(void) {
    i--;
  }

  template<class TaskView, SortTaskOrder sto, bool inc>
  forceinline int
  TaskViewIter<TaskView,sto,inc>::task(void) const {
    return map[i];
  }


  template<class OptTaskView, SortTaskOrder sto, bool inc>
  forceinline
  ManTaskViewIter<OptTaskView,sto,inc>
  ::ManTaskViewIter(Region& r, const TaskViewArray<OptTaskView>& t) {
    map = r.alloc<int>(t.size()); i=0;
    for (int j=t.size(); j--; )
      if (t[j].mandatory())
        map[i++]=j;
    sort<OptTaskView,sto,!inc>(map,i,t); 
    i--;
  }


}}

// STATISTICS: int-prop