108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoFunctorStore.h
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// (c) Maarten Keijzer 2000, GeNeura Team, 2000
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/*
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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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Marc.Schoenauer@polytechnique.fr
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mak@dhi.dk
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*/
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//-----------------------------------------------------------------------------
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#ifndef _eoFunctorStore_h
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#define _eoFunctorStore_h
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#include <vector>
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#include <algorithm>
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#include "utils/eoLogger.h"
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class eoFunctorBase;
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/**
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eoFunctorStore is a class that stores functors that are allocated on the
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heap. This class can be used in factories to store allocated memory for
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dynamically created functors.
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@ingroup Utilities
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*/
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class eoFunctorStore
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{
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public:
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/// Default Ctor
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eoFunctorStore() {}
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// virtual destructor so we don't need to define it in derived classes
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virtual ~eoFunctorStore();
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/// Add an eoFunctorBase to the store
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template <class Functor>
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Functor& storeFunctor(Functor* r)
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{
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#ifndef NDEBUG
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unsigned int existing = std::count( vec.begin(), vec.end(), r );
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if( existing > 0 ) {
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eo::log << eo::warnings << "WARNING: you asked eoFunctorStore to store the functor " << r << " "
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<< existing + 1 << " times, a segmentation fault may occur in the destructor." << std::endl;
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}
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#endif
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// If the compiler complains about the following line,
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// check if you really are giving it a pointer to an
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// eoFunctorBase derived object
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vec.push_back(r);
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return *r;
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}
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/** Allocate the given functor, store it and return its reference.
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*
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* Indicate the class to instanciate as template paramater,
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* and pass its constructor arguments.
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*
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* @code
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* eoSelect<EOT>& selector = state.pack< eoRankMuSelect<EOT> >( mu );
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* @endcode
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*/
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template<class Functor, class... Args>
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Functor& pack( Args&&... args )
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{
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Functor* f = new Functor(args...);
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return this->storeFunctor(f);
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}
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// Allow to pass initializer lists of pointers, for example for edoCombinedContinue.
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template<class Functor, class Args>
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Functor& pack( std::initializer_list<Args> args )
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{
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Functor* f = new Functor(args);
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return this->storeFunctor(f);
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}
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private :
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/** no copying allowed */
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eoFunctorStore(const eoFunctorStore&);
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/** no assignment allowed */
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eoFunctorStore operator=(const eoFunctorStore&);
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protected:
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std::vector<eoFunctorBase*> vec;
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};
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#endif
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