eoScalarFitnessAssembled.h

 /* -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*- */

//-----------------------------------------------------------------------------
// eoScalarFitnessAssembled.h
// Marc Wintermantel & Oliver Koenig
// IMES-ST@ETHZ.CH
// March 2003

/*
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
             Marc.Schoenauer@inria.fr
             mak@dhi.dk
*/
//-----------------------------------------------------------------------------

#ifndef eoScalarFitnessAssembled_h
#define eoScalarFitnessAssembled_h

#include <functional>
#include <iostream>
#include <stdexcept>
#include <vector>
#include <string>


class eoScalarFitnessAssembledTraits{

public:

  typedef std::vector<std::string>::size_type size_type;

  static void setDescription( size_type _idx, std::string _descr ) {
    if ( _idx < TermDescriptions.size() )
      TermDescriptions[_idx] = _descr;
    else{
      TermDescriptions.resize(_idx, "Unnamed variable" );
      TermDescriptions[_idx] = _descr;
    }
  }

  static std::string getDescription( size_type _idx) {
    if ( _idx < TermDescriptions.size() )
      return TermDescriptions[_idx ];
    else
      return "Unnamed Variable";
  }

  static void resize( size_type _n, const std::string& _descr) {
    TermDescriptions.resize(_n, _descr);
  }

  static size_type size() { return TermDescriptions.size(); }

  static std::vector<std::string> getDescriptionVector() { return TermDescriptions; }

private:
  static std::vector<std::string> TermDescriptions;
};


template <class ScalarType, class Compare, class FitnessTraits >
class eoScalarFitnessAssembled : public std::vector<ScalarType> {

public:

    using std::vector< ScalarType >::empty;
    using std::vector< ScalarType >::front;
    using std::vector< ScalarType >::size;


  typedef typename std::vector<ScalarType> baseVector;
  typedef typename baseVector::size_type size_type;

  // Basic constructors and assignments
  eoScalarFitnessAssembled()
    : baseVector( FitnessTraits::size() ),
      feasible(true), failed(false), msg("")
  {}

  eoScalarFitnessAssembled( size_type _n,
                            const ScalarType& _val,
                            const std::string& _descr="Unnamed variable" )
    : baseVector(_n, _val),
      feasible(true), failed(false), msg("")
  {
    if ( _n > FitnessTraits::size() )
    FitnessTraits::resize(_n, _descr);
  }

  eoScalarFitnessAssembled( const eoScalarFitnessAssembled& other)
    : baseVector( other ),
      feasible(other.feasible),
      failed(other.failed),
      msg(other.msg)
  {}

  eoScalarFitnessAssembled& operator=( const eoScalarFitnessAssembled& other) {
    baseVector::operator=( other );
    feasible = other.feasible;
    failed = other.failed;
    msg = other.msg;
    return *this;
  }

  // Constructors and assignments to work with scalar type
  eoScalarFitnessAssembled( const ScalarType& v )
    : baseVector( 1, v ),
      feasible(true), failed(false), msg("")
  {}

  eoScalarFitnessAssembled& operator=( const ScalarType& v ) {

      if( empty() )
          push_back( v );
      else
          front() = v;
      return *this;
  }

  void push_back(const ScalarType& _val ){
    baseVector::push_back( _val );
    if ( size() > FitnessTraits::size() )
      FitnessTraits::setDescription( size()-1, "Unnamed variable");
  }

  void push_back(const ScalarType& _val, const std::string& _descr ){
    baseVector::push_back( _val );
    FitnessTraits::setDescription( size()-1, _descr );
  }

  void resize( size_type _n, const ScalarType& _val = ScalarType(), const std::string& _descr = "Unnamed variable" ){
    baseVector::resize(_n, _val);
    FitnessTraits::resize(_n, _descr);
  }

  void setDescription( size_type _idx, std::string _descr ) {
    FitnessTraits::setDescription( _idx, _descr );
  }

  std::string getDescription( size_type _idx ){ return FitnessTraits::getDescription( _idx ); }

  std::vector<std::string> getDescriptionVector() { return FitnessTraits::getDescriptionVector(); }


  bool feasible;


  bool failed;


  std::string msg;


  // Scalar type access
  operator ScalarType(void) const {
    if ( empty() )
      return 0.0;
    else
      return front();
  }

  void printAll(std::ostream& os) const {
    for (size_type i=0; i < size(); ++i )
      os << FitnessTraits::getDescription(i) << " = " << operator[](i) << " ";
  }

  // Comparison, using less by default
  bool operator<(const eoScalarFitnessAssembled& other) const{
    if ( empty() || other.empty() )
      return false;
    else
      return Compare()( front() , other.front() );
  }

  // implementation of the other operators
  bool operator>( const eoScalarFitnessAssembled<ScalarType, Compare, FitnessTraits>& y ) const  { return y < *this; }

  // implementation of the other operators
  bool operator<=( const eoScalarFitnessAssembled<ScalarType, Compare, FitnessTraits>& y ) const { return !(*this > y); }

  // implementation of the other operators
  bool operator>=(const eoScalarFitnessAssembled<ScalarType, Compare, FitnessTraits>& y ) const { return !(*this < y); }

};

typedef eoScalarFitnessAssembled<double, std::less<double>, eoScalarFitnessAssembledTraits >    eoAssembledMaximizingFitness;
typedef eoScalarFitnessAssembled<double, std::greater<double>, eoScalarFitnessAssembledTraits > eoAssembledMinimizingFitness;

template <class F, class Cmp, class FitnessTraits>
std::ostream& operator<<(std::ostream& os, const eoScalarFitnessAssembled<F, Cmp, FitnessTraits>& f)
{
  for (unsigned i=0; i < f.size(); ++i)
    os << f[i] << " ";

  os << f.feasible << " ";
  os << f.failed << " ";

  return os;
}

template <class F, class Cmp, class FitnessTraits>
std::istream& operator>>(std::istream& is, eoScalarFitnessAssembled<F, Cmp, FitnessTraits>& f)
{
  for (unsigned i=0; i < f.size(); ++i){
    F value;
    is >> value;
    f[i] = value;
  }

  is >> f.feasible;
  is >> f.failed;

  return is;
}

#endif

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