100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/* -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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-----------------------------------------------------------------------------
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eoExternalEO.h
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Definition of an object that allows an external struct to be inserted in EO
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(c) Maarten Keijzer (mkeijzer@mad.scientist.com) and GeNeura Team, 1999, 2000
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: todos@geneura.ugr.es, http://geneura.ugr.es
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*/
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#ifndef eoExternalEO_h
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#define eoExternalEO_h
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#include <EO.h> // EO
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/**
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* Definition of an object that allows an external struct
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* to be inserted in EO. This struct or class can be of any
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* form, the only thing this class does is attach a fitness
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* value to it and makes it the appropriate type (derives it from EO).
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*
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* @ingroup Utilities
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*/
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template <class Fit, class External>
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class eoExternalEO : public EO<Fit>, virtual public External
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{
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public :
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eoExternalEO()
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: External(), EO<Fit>()
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{}
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/** Init externalEo with the struct itself and set fitness to zero */
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eoExternalEO(const External& ext)
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: EO<Fit>(), External(ext)
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{}
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eoExternalEO(std::istream& is, const External& ext)
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: EO<Fit>(), External(ext)
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{ readFrom(is); }
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/**
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* Read object, the external struct needs to have an operator>> defined
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*/
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virtual void readFrom(std::istream& _is)
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{
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EO<Fit>::readFrom(_is);
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_is >> static_cast<External&>(*this);
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}
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/**
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* Write object. Called printOn since it prints the object _on_ a stream.
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* @param _os A std::ostream.
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*/
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virtual void printOn(std::ostream& _os) const
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{
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EO<Fit>::printOn(_os);
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_os << static_cast<const External&>(*this);
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}
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};
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/** @example t-eoExternalEO.cpp
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*/
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/** To remove ambiguities between EO<F> and External, streaming operators are defined yet again
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* @ingroup Utilities
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*/
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template <class F, class External>
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std::ostream& operator<<(std::ostream& os, const eoExternalEO<F, External>& eo)
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{
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eo.printOn(os);
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return os;
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}
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/** To remove ambiguities between EO<F> and External, streaming operators are defined yet again
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* @ingroup Utilities
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*/
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template <class F, class External>
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std::istream& operator>>(std::istream& is, eoExternalEO<F, External>& eo)
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{
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eo.readFrom(is);
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return is;
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}
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#endif
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