selectOne.cpp

/*
    PyEO
    
    Copyright (C) 2003 Maarten Keijzer

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

    This program 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 program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include <eoSelectOne.h>
#include <eoDetTournamentSelect.h>
#include <eoRandomSelect.h>
#include <eoStochTournamentSelect.h>
#include <eoTruncatedSelectOne.h>
#include <eoSequentialSelect.h>

#include "PyEO.h"
#include "pickle.h"
#include "def_abstract_functor.h"

using namespace boost::python;

class eoSelectOneWrapper : public eoSelectOne<PyEO>
{
    public:
    PyObject* self;
    eoSelectOneWrapper(PyObject* p) : self(p) {}
    const PyEO& operator()(const eoPop<PyEO>& pop) 
    {
        return boost::python::call_method< const PyEO& >(self, "__call__", boost::ref(pop));
    }
};

template <class Select>
void add_select(std::string name)
{
    class_<Select, bases<eoSelectOne<PyEO> > >(name.c_str(), init<>() )
        .def("__call__", &Select::operator(), return_internal_reference<>() )
        ;
}

template <class Select, class Init>
void add_select(std::string name, Init init)
{
    class_<Select, bases<eoSelectOne<PyEO> > >(name.c_str(), init)
        .def("__call__", &Select::operator(), return_internal_reference<>() )
        ;
}
    
template <class Select, class Init1, class Init2>
void add_select(std::string name, Init1 init1, Init2 init2)
{
    class_<Select, bases<eoSelectOne<PyEO> > >(name.c_str(), init1)
        .def( init2 )
        .def("__call__", &Select::operator(), return_internal_reference<>() )
        .def("setup", &Select::setup);
}

void selectOne()
{
    /* Concrete classes */
   
    pickle(class_<eoHowMany>("eoHowMany", init<>())
        .def( init<double>() )
        .def( init<double, bool>() )
        .def( init<int>() )
        .def("__call__", &eoHowMany::operator())
        .def("__neg__", &eoHowMany::operator-)
          ); 
    
    class_<eoSelectOne<PyEO>, eoSelectOneWrapper, boost::noncopyable>("eoSelectOne", init<>())
        .def("__call__", &eoSelectOneWrapper::operator(), return_internal_reference<>() )
        .def("setup", &eoSelectOne<PyEO>::setup);
    
    /* SelectOne derived classes */
    
    add_select<eoDetTournamentSelect<PyEO> >("eoDetTournamentSelect", init<>(), init<unsigned>() );
    add_select<eoStochTournamentSelect<PyEO> >("eoStochTournamentSelect", init<>(), init<double>() );
    add_select<eoTruncatedSelectOne<PyEO>  >("eoTruncatedSelectOne", 
            init<eoSelectOne<PyEO>&, double>()[WC1], init<eoSelectOne<PyEO>&, eoHowMany >()[WC1] );
    
    // eoProportionalSelect is not feasible to implement at this point as fitness is not recognizable as a float
    // use eoDetTournament instead: with a t-size of 2 it is equivalent to eoProportional with linear scaling
    //add_select<eoProportionalSelect<PyEO> >("eoProportionalSelect", init<eoPop<PyEO>&>() );
    
    add_select<eoRandomSelect<PyEO> >("eoRandomSelect");
    add_select<eoBestSelect<PyEO> >("eoBestSelect");
    add_select<eoNoSelect<PyEO> >("eoNoSelect");
    
    add_select<eoSequentialSelect<PyEO> >("eoSequentialSelect", init<>(), init<bool>());
    add_select<eoEliteSequentialSelect<PyEO> >("eoEliteSequentialSelect");
    /*
     * eoSelectFromWorth.h:class eoSelectFromWorth : public eoSelectOne<EOT>
    
    */
}

---