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/home/pauldt/projects/IDEA/IDEA-ALL/IDEA-DEV/Core/PlanServer/Includes/PslParameter.hh

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// -*- Mode: C++ -*-
//      CVS: $Id: PslParameter.hh,v 1.8 2005/11/08 18:32:43 rijsman Exp $
//      Tag: $name$
//     Info: $CVSROOT/IDEA-DEV/COPYRIGHT
#ifndef PLANSERVER_PARAMETER_HEADER_
#define PLANSERVER_PARAMETER_HEADER_

#include "Utilities.hh"
#include "TimeBasics.hh"

namespace IDEA
{
  class PslArgument;
  class PslDatabase;
  class PslParameterImpl;
  class PslToken;
  class PslVariable;

  class PslParameter
  {
  public:
    PslParameter( PslParameterImpl* impl );
    ~PslParameter();
    bool finalize() const;
    const PslToken* getToken() const;
    const PslArgument* getArgument() const;
    const PslVariable* getContent() const;
    const PslVariable* getObservedValue() const;
    void receivedValue( const std::string& value ) const;
    /*
      \brief Activates the constraint(s) which maintain the relation between the flag and (return) status 
      parameters.
      
      The constraint(s) activated depend on the token being executable or goal and one only knows this 
      when a timeline has been assigned to a token. This can only be invoked in PslToken::getTimeline is 
      not equal to zero.
    */
    void activateFlagConstraint( int authority ) const;
     /*
       \brief De-activates the constraint(s) which maintain the relation between the flag and (return) status 
       parameters.
     */
    void deActivateFlagConstraint() const;
    void reset( const IntVector& authorities ) const;
    
    void print( std::ostream& os ) const;
  private:
    PslParameterImpl* m_Impl;
  public:
    const PslVariable* getActualValue() const;
  };

  std::ostream& operator<<(std::ostream& os, const PslParameter& parameter);
}

#endif // PLANSERVER_PARAMETER_HEADER_

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