EvolvingObjects
eoExternalEO.h
00001 /* -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
00002 
00003   -----------------------------------------------------------------------------
00004   eoExternalEO.h
00005         Definition of an object that allows an external struct to be inserted in EO
00006 
00007  (c) Maarten Keijzer (mkeijzer@mad.scientist.com) and GeNeura Team, 1999, 2000
00008 
00009     This library is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU Lesser General Public
00011     License as published by the Free Software Foundation; either
00012     version 2 of the License, or (at your option) any later version.
00013 
00014     This library is distributed in the hope that it will be useful,
00015     but WITHOUT ANY WARRANTY; without even the implied warranty of
00016     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017     Lesser General Public License for more details.
00018 
00019     You should have received a copy of the GNU Lesser General Public
00020     License along with this library; if not, write to the Free Software
00021     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 
00023     Contact: todos@geneura.ugr.es, http://geneura.ugr.es
00024  */
00025 
00026 #ifndef eoExternalEO_h
00027 #define eoExternalEO_h
00028 
00029 #include <EO.h> // EO
00030 
00039 template <class Fit, class External>
00040 class eoExternalEO : public EO<Fit>, virtual public External
00041 {
00042 public :
00043 
00044     eoExternalEO()
00045         : External(), EO<Fit>()
00046         {}
00047 
00049     eoExternalEO(const External& ext)
00050         : EO<Fit>(), External(ext)
00051         {}
00052 
00053     eoExternalEO(std::istream& is, const External& ext)
00054         : EO<Fit>(), External(ext)
00055         { readFrom(is); }
00056 
00060   virtual void readFrom(std::istream& _is)
00061   {
00062       EO<Fit>::readFrom(_is);
00063     _is >> static_cast<External&>(*this);
00064   }
00065 
00070   virtual void printOn(std::ostream& _os) const
00071   {
00072       EO<Fit>::printOn(_os);
00073       _os << static_cast<const External&>(*this);
00074   }
00075 
00076 };
00083 template <class F, class External>
00084 std::ostream& operator<<(std::ostream& os, const eoExternalEO<F, External>& eo)
00085 {
00086     eo.printOn(os);
00087     return os;
00088 }
00089 
00093 template <class F, class External>
00094 std::istream& operator>>(std::istream& is, eoExternalEO<F, External>& eo)
00095 {
00096     eo.readFrom(is);
00097     return is;
00098 }
00099 
00100 #endif
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