added

eo/src/pyeo/PyEO.h

@@ -0,0 +1,153 @@
+/*
+    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
+*/
+
+#ifndef PYEO_H
+#define PYEO_H
+
+#include <EO.h>
+
+#include <vector>
+#include <boost/python.hpp>
+
+using namespace boost::python;
+
+struct index_error { index_error(std::string w) : what(w) {}; std::string what; };
+
+class PyFitness : public boost::python::object
+{
+    public :
+    
+    typedef PyFitness fitness_traits; // it's its own traits class :-)
+	
+    PyFitness() : object() {}
+    
+    template <class T>
+    PyFitness(const T& o) : object(o) {}
+   
+    
+    static unsigned nObjectives() { return objective_info.size(); }
+    static double tol() { return 1e-6; }
+    static bool maximizing(int which) { return objective_info[which] > 0; }
+    
+    static void setObjectivesSize(int sz) { objective_info.resize(sz); }
+    static void setObjectivesValue(unsigned which, int value)
+    {
+	if (which >= objective_info.size())
+	{
+	    throw index_error("Too few elements allocated, resize objectives first");
+	}
+
+	objective_info[which] = value;
+    }
+    
+    static std::vector<int> objective_info;
+    
+    bool dominates(const PyFitness& oth) const;
+    
+    double operator[](int i) const 
+    { 
+	extract<double> x(object::operator[](i)); 
+    
+	if (!x.check())
+	    throw runtime_error("PyFitness: does not contain doubles");
+	return x();
+    }
+ 
+    bool operator<(const PyFitness& other) const 
+    { 
+	if (objective_info.size() == 0)
+	{
+	    const object& self = *this;
+	    const object& oth = other;
+	    return self < oth;
+	}
+	// otherwise use objective_info
+    
+	for (unsigned i = 0; i < objective_info.size(); ++i)
+	{
+	    double a = objective_info[i] * operator[](i);
+	    double b = objective_info[i] * other[i];
+
+	    if ( fabs(a - b) > tol())
+	    {
+		if (a < b)
+		    return true;
+		return false;
+	    }
+	}
+
+	return false;
+    }
+    
+    bool operator>(const PyFitness& other) const 
+    { 
+	return other.operator<(*this);
+    }
+    
+    //void printOn(ostream& os) const { const object& o = *this; os << o; }
+    //friend ostream& operator<<(ostream& os, const PyFitness& p) { p.printOn(os); return os;  }
+    //friend istream& operator>>(istream& is, PyFitness& p) { object o; is >> o; p = o; return is; }
+};
+
+struct PyEO : public EO< PyFitness  >
+{  
+    typedef PyFitness Fitness;
+    
+    object getFitness() const { return invalid()? Fitness(): fitness(); }
+    void setFitness(object f) { if (f == Fitness()) invalidate(); else fitness(f); }
+
+    object getGenome() const { return genome; }
+    void setGenome(object g) { genome = g; }
+    object genome;
+
+    std::string to_string() const
+    {
+	std::string result;
+	result += extract<const char*>(str(getFitness()));
+	result += ' ';
+	result += extract<const char*>(str(genome));
+	return result;
+    }
+
+    bool operator<(const PyEO& other) const { return EO<Fitness>::operator<(other); }
+    bool operator>(const PyEO& other) const { return EO<Fitness>::operator>(other); }
+
+};
+
+ostream& operator<<(ostream& os, const PyEO& _eo);
+
+struct PyEO_pickle_suite : boost::python::pickle_suite
+{
+    typedef PyEO::Fitness Fitness;
+    
+    static
+    boost::python::tuple getstate(const PyEO& _eo)
+    {
+	return make_tuple(_eo.getFitness(), _eo.genome);
+    }
+    static
+    void setstate(PyEO& _eo, boost::python::tuple pickled)
+    {
+	_eo.setFitness( Fitness(pickled[0]) );
+	_eo.genome = pickled[1];
+    }
+};
+
+#endif