src/clipsmm/activation.cpp

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/***************************************************************************
 *   Copyright (C) 2006 by Rick L. Vinyard, Jr.                            *
 *   rvinyard@cs.nmsu.edu                                                  *
 *                                                                         *
 *   This file is part of the clipsmm library.                             *
 *                                                                         *
 *   The clipsmm library is free software; you can redistribute it and/or  *
 *   modify it under the terms of the GNU General Public License           *
 *   version 3 as published by the Free Software Foundation.               *
 *                                                                         *
 *   The clipsmm library is distributed in the hope that it will be        *
 *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
 *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU   *
 *   General Public License for more details.                              *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this software. If not see <http://www.gnu.org/licenses/>.  *
 ***************************************************************************/
#include <clipsmm/activation.h>

extern "C" {
  #include <clips/clips.h>
};

#include <clipsmm/environment.h>

#include <limits.h>

namespace DACLIPS {

  Activation::Activation( Environment& environment, void* cobj ) :
  EnvironmentObject( environment, cobj ) {}

  Activation::pointer Activation::create( Environment & environment, void * cobj ) {
    return Activation::pointer( new Activation( environment, cobj ) );
  }


  Activation::~Activation() {}

  std::string Activation::name( )
  {
    if ( m_cobj )
      return EnvGetActivationName( m_environment.cobj(), m_cobj );
    else
      return std::string();
  }

  std::string Activation::formatted( )
  {
    char temp[2001];
    if ( m_cobj ) {
      EnvGetActivationPPForm( m_environment.cobj(), temp, 2000, m_cobj );
      return temp;
    }
    else
      return std::string();
  }

  bool Activation::deactivate( )
  {
    if ( m_cobj )
      return EnvDeleteActivation( m_environment.cobj(), m_cobj );
    else
      return false;
  }

  int Activation::salience( )
  {
    if ( m_cobj )
      return EnvGetActivationSalience( m_environment.cobj(), m_cobj );
    else
      return INT_MIN;
  }

  int Activation::set_salience( int sal )
  {
    if ( m_cobj )
      return EnvSetActivationSalience( m_environment.cobj(), m_cobj, sal );
    else
      return INT_MIN;
  }

  Activation::pointer Activation::next( )
  {
    void* nxt = NULL;
    if ( m_cobj ) {
      nxt = EnvGetNextActivation( m_environment.cobj(), m_cobj );
      if ( nxt )
        return Activation::create( m_environment, nxt );
    }

    return Activation::pointer();
  }

}

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