/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Guido Tack <tack@gecode.org>
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Guido Tack, 2004,2005
 *     Christian Schulte, 2004,2005
 *
 *  Last modified:
 *     $Date: 2008-05-27 19:24:07 +0200 (Tue, 27 May 2008) $ by $Author: tack $
 *     $Revision: 6982 $
 *
 *  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 Set { namespace Element {

  template <class View>
  forceinline IdxView<View>*
  IdxView<View>::allocate(Space* home, int n) {
    return static_cast<IdxView<View>*>(home->alloc(sizeof(IdxView<View>)*n));
  }

  template <class View>
  IdxViewArray<View>::IdxViewArray(void) : xs(NULL), n(0) {}

  template <class View>
  IdxViewArray<View>::IdxViewArray(const IdxViewArray<View>& a) {
    n = a.n; xs = a.xs;
  }

  template <class View>
  IdxViewArray<View>::IdxViewArray(Space* home, const SetVarArgs& xa)
    : xs(NULL) {
    n = xa.size();
    if (n>0) {
      xs = IdxView<View>::allocate(home, n);
      for (int i = n; i--; ) {
        SetView xav(xa[i]);
        View xavv(xav);
        xs[i].idx = i; xs[i].var = xavv;
      }
    }
  }

  template <class View>
  forceinline int
  IdxViewArray<View>::size(void) const {
    return n;
  }

  template <class View>
  forceinline void
  IdxViewArray<View>::size(int n0) {
    n = n0;
  }

  template <class View>
  forceinline IdxView<View>&
  IdxViewArray<View>::operator[](int i) {
    assert((i >= 0) && (i < size()));
    return xs[i];
  }

  template <class View>
  forceinline const IdxView<View>&
  IdxViewArray<View>::operator[](int i) const {
    assert((i >= 0) && (i < size()));
    return xs[i];
  }

  template <class View>
  void
  IdxViewArray<View>::subscribe(Space* home, Propagator* p, PropCond pc,
                                bool process) {
    for (int i = n; i--; )
      xs[i].var.subscribe(home,p,pc,process);
  }

  template <class View>
  void
  IdxViewArray<View>::cancel(Space* home, Propagator* p, PropCond pc) {
    for (int i = n; i--; )
      xs[i].var.cancel(home,p,pc);
  }

  template <class View>
  void
  IdxViewArray<View>::update(Space* home, bool share, IdxViewArray<View>& a) {
    n = a.size();
    if (n>0) {
      xs = IdxView<View>::allocate(home,n);
      for (int i=n; i--; ) {
        xs[i].idx = a[i].idx;
        xs[i].var.update(home,share,a[i].var);
      }
    }
  }
  
  template <class View>
  Reflection::Arg*
  IdxViewArray<View>::spec(const Space* home, Reflection::VarMap& m) const {
    Reflection::IntArrayArg* is = Reflection::Arg::newIntArray(n);
    for (int i = 0; i<n; i++)
      (*is)[i] = xs[i].idx;
    Reflection::ArrayArg* s = Reflection::Arg::newArray(n);
    for (int i = 0; i<n; i++)
      (*s)[i] = xs[i].var.spec(home, m);
    return Reflection::Arg::newPair(is,s);
  }

  template <class View>
  IdxViewArray<View>::IdxViewArray(Space* home,
                                   const Reflection::VarMap& vars,
                                   Reflection::Arg* spec) : xs(NULL) {
    Reflection::IntArrayArg* is = spec->first()->toIntArray();
    Reflection::ArrayArg* s = spec->second()->toArray();
    n = is->size();
    if (n>0) {
      xs = IdxView<View>::allocate(home, n);
      for (int i = n; i--; ) {
        View xavv(home, vars, (*s)[i]);
        xs[i].idx = (*is)[i]; xs[i].var = xavv;
      }
    }                                     
  }

}}}

// STATISTICS: set-prop