UnaryVariable.cc

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
// Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal
// Copyright (C) 2002 Xiangdong Wang, Christian Dorion

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
// 
//  3. The name of the authors may not be used to endorse or promote
//     products derived from this software without specific prior written
//     permission.
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// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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// This file is part of the PLearn library. For more information on the PLearn
// library, go to the PLearn Web site at www.plearn.org


/* *******************************************************      
   * $Id: UnaryVariable.cc,v 1.15 2004/02/20 21:11:54 chrish42 Exp $
   * This file is part of the PLearn library.
   ******************************************************* */

#include "UnaryVariable.h"

namespace PLearn {
using namespace std;


UnaryVariable::UnaryVariable(Variable* v, int thelength, int thewidth)
  : Variable(thelength,thewidth), input(v) 
{}


PLEARN_IMPLEMENT_ABSTRACT_OBJECT(UnaryVariable, "ONE LINE DESCR", "NO HELP");

void UnaryVariable::declareOptions(OptionList& ol)
{
  declareOption(ol, "input", &UnaryVariable::input, OptionBase::buildoption, 
                "The parent variable that this one depends on\n");

  inherited::declareOptions(ol);
}





extern void varDeepCopyField(Var& field, CopiesMap& copies);

void UnaryVariable::makeDeepCopyFromShallowCopy(map<const void*, void*>& copies)
{
  Variable::makeDeepCopyFromShallowCopy(copies);
  //deepCopyField(input, copies);
  varDeepCopyField(input, copies); // a cause d'une bug du compilateur
}


bool UnaryVariable::markPath()
{
  if(!marked)
    marked = input->markPath();
  return marked;
}


void UnaryVariable::buildPath(VarArray& proppath)
{
  if(marked)
    {
      input->buildPath(proppath);
      //cout<<"add :"<<this->getName()<<endl;
      proppath.append(Var(this));
      clearMark();
    }
}


VarArray UnaryVariable::sources() 
{ 
  if (marked)
    return VarArray(0,0);
  marked = true;
  return input->sources(); 
}


VarArray UnaryVariable::random_sources() 
{ 
  if (marked)
    return VarArray(0,0);
  marked = true;
  return input->random_sources(); 
}


VarArray UnaryVariable::ancestors() 
{ 
  if (marked)
    return VarArray(0,0);
  marked = true;
  return input->ancestors() & (VarArray)Var(this);
}


void UnaryVariable::unmarkAncestors()
{ 
  if (marked)
    {
      marked = false;
      input->unmarkAncestors();
    }
}


VarArray UnaryVariable::parents() 
{ 
  if (input->marked)
    return VarArray(0,0);
  else
    return input;
}


void UnaryVariable::resizeRValue()
{
  inherited::resizeRValue();
  if (!input->rvaluedata) input->resizeRValue();
}



} // end of namespace PLearn

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