added

eo/src/pyeo/PyEO.cpp

@@ -0,0 +1,221 @@
+/*
+    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 <eoPop.h>
+#include "PyEO.h"
+
+
+// static member, needs to be instantiated somewhere
+std::vector<int> PyFitness::objective_info;
+    
+bool PyFitness::dominates(const PyFitness& oth) const
+{   
+    bool dom = false;
+
+    for (unsigned i = 0; i < nObjectives(); ++i)
+    {
+      int objective = objective_info[i];
+      
+      if (objective == 0) // ignore
+	  continue;
+
+      bool maxim = objective > 0;
+      
+      double aval = maxim? (*this)[i] : -(*this)[i];
+      double bval = maxim? oth[i] : -oth[i];
+
+      if (fabs(aval - bval) > tol())
+      {
+        if (aval < bval)
+        {
+          return false; // cannot dominate
+        }
+        // else aval < bval
+        dom = true; // for the moment: goto next objective
+      }
+      //else they're equal in this objective, goto next
+    }
+
+    return dom;
+}
+
+bool dominates(const PyEO& a, const PyEO& b)
+{
+    return PyFitness(a.fitness()).dominates(b.fitness());
+}
+
+ostream& operator<<(ostream& os, const PyEO& _eo)
+{
+    os << _eo.to_string();
+    return os;
+}
+
+struct pyPop_pickle_suite : boost::python::pickle_suite
+{
+    static boost::python::tuple getstate(const eoPop<PyEO>& _pop)
+    {
+	boost::python::list entries;
+	for (unsigned i = 0; i != _pop.size(); ++i)
+	    entries.append( PyEO_pickle_suite::getstate(_pop[i]) );
+
+	return make_tuple(object(_pop.size()), entries);
+    }
+
+    static void setstate( eoPop<PyEO>& _pop, boost::python::tuple pickled)
+    {
+	int sz = extract<int>(pickled[0]);
+	boost::python::list entries = pickled[1];
+	_pop.resize(sz);
+	for (unsigned i = 0; i != _pop.size(); ++i)
+	    PyEO_pickle_suite::setstate(_pop[i], tuple(entries[i]) );
+    }
+};
+
+
+template <class T>
+boost::python::str to_string(T& _p)
+{
+    std::ostrstream os;
+    _p.printOn(os);
+    os << ends;
+    std::string s(os.str());
+    return str(s.c_str());
+}
+
+void pop_sort(eoPop<PyEO>& pop) { pop.sort(); }
+void pop_shuffle(eoPop<PyEO>& pop) { pop.shuffle(); }
+
+void translate_index_error(index_error const& e)
+{
+        PyErr_SetString(PyExc_IndexError, e.what.c_str());
+}
+
+PyEO& pop_getitem(eoPop<PyEO>& pop, object key)
+{
+    extract<int> x(key);
+    if (!x.check())
+	throw index_error("Slicing not allowed");
+    
+    int i = x();
+    
+    if (static_cast<unsigned>(i) >= pop.size())
+    { 
+	throw index_error("Index out of bounds");
+    }
+    
+    return pop[i];
+}
+void pop_setitem(eoPop<PyEO>& pop, object key, PyEO& value)
+{
+
+    extract<int> x(key);
+    if (!x.check())
+	throw index_error("Slicing not allowed");
+    
+    int i = x();
+    
+    if (static_cast<unsigned>(i) >= pop.size())
+    { 
+	throw index_error("Index out of bounds");
+    }
+    
+    pop[i] = value;
+}
+
+void pop_push_back(eoPop<PyEO>& pop, PyEO& p) { pop.push_back(p); }
+void pop_resize(   eoPop<PyEO>& pop, unsigned i) { pop.resize(i); }
+
+extern void abstract1();
+extern void algos();
+extern void random_numbers();
+extern void geneticOps();
+extern void selectOne();
+extern void continuators();
+extern void reduce();
+extern void replacement();
+extern void selectors();
+extern void breeders();
+extern void mergers();
+extern void valueParam();
+extern void perf2worth();
+
+BOOST_PYTHON_MODULE(PyEO)
+{
+    register_exception_translator<index_error>(&translate_index_error);
+    
+    class_<PyEO>("EO")
+	.add_property("fitness", &PyEO::getFitness, &PyEO::setFitness)
+	.add_property("genome", &PyEO::getGenome, &PyEO::setGenome)
+	.def_pickle(PyEO_pickle_suite())
+	.def("invalidate", &PyEO::invalidate)
+	.def("invalid", &PyEO::invalid)
+	.def("__str__", &PyEO::to_string)
+	;
+
+    class_<eoPop<PyEO> >("Pop", init<>() )
+	.def( init< unsigned, eoInit<PyEO>& >() )
+	.def("append", &eoPop<PyEO>::append)
+	.def("__str__", to_string<eoPop<PyEO> >)
+	.def("__len__", &eoPop<PyEO>::size)
+	.def("sort",    pop_sort )
+	.def("shuffle", pop_shuffle)
+	.def("__getitem__", pop_getitem, return_internal_reference<>() )
+	.def("__setitem__", pop_setitem)
+	.def("best", &eoPop<PyEO>::best_element, return_internal_reference<>() )
+	.def("push_back", pop_push_back)
+	.def("resize",    pop_resize)
+	.def_pickle(pyPop_pickle_suite())
+	;
+
+    
+    // Other definitions in different compilation units, 
+    // this to avoid having g++ to choke on the load
+    random_numbers();
+    valueParam();
+    abstract1();
+    geneticOps();
+    selectOne();
+    selectors();
+    perf2worth();
+    continuators();
+    reduce();
+    replacement();
+    breeders();
+    mergers();
+    algos();
+
+    // The traits class
+    class_<PyFitness>("PyFitness");
+
+	def("nObjectives", &PyFitness::nObjectives);
+	def("tol", &PyFitness::tol);
+	def("maximizing", &PyFitness::maximizing);
+	def("setObjectivesSize", &PyFitness::setObjectivesSize);
+	def("setObjectivesValue", &PyFitness::setObjectivesValue);
+	def("dominates", dominates);
+}
+
+
+// to avoid having to build with libeo.a
+ostream & operator << ( ostream& _os, const eoPrintable& _o ) {
+            _o.printOn(_os);
+	            return _os;
+};