123 lines
3.1 KiB
C++
123 lines
3.1 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoSTLFunctor.h
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// (c) Maarten Keijzer 2001
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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 _eoSTLFunctor_H
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#define _eoSTLFunctor_H
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#include "eoFunctor.h"
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/** @addtogroup Utilities
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* @{
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*/
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/**
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Generic set of classes that wrap an eoF, eoUF or eoBF so that they have the
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copy semantics the STL functions usually require (i.e. they can be passed
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by value, rather than the EO standard pass by reference).
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The family consists of eoSTLF, eoSTLUF, eoSTLBF that modify eoF, eoUF and eoBF
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respectively
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*/
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template <class R>
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class eoSTLF
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{
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public:
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typedef R result_type;
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eoSTLF(eoF<R>& _f) : f(_f) {}
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R operator()(void)
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{
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return f();
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}
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private :
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eoF<R>& f;
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};
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#ifdef _MSVC
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/// specialization of void for MSVC users, unfortunately only works for eoF,
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/// as MSVC does not support partial specialization either
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template <>
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void eoSTLF<void>::operator()(void)
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{
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f();
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}
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#endif
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/**
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Generic set of classes that wrap an eoF, eoUF or eoBF so that they have the
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copy semantics the STL functions usually require (i.e. they can be passed
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by value, rather than the EO standard pass by reference).
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The family consists of eoSTLF, eoSTLUF, eoSTLBF that modify eoF, eoUF and eoBF
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respectively
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*/
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template <class A1, class R>
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class eoSTLUF : public std::unary_function<A1, R>
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{
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public:
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eoSTLUF(eoUF<A1,R>& _f) : f(_f) {}
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R operator()(A1 a)
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{
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return f(a);
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}
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private:
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eoUF<A1, R>& f;
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};
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/**
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Generic set of classes that wrap an eoF, eoUF or eoBF so that they have the
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copy semantics the STL functions usually require (i.e. they can be passed
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by value, rather than the EO standard pass by reference).
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The family consists of eoSTLF, eoSTLUF, eoSTLBF that modify eoF, eoUF and eoBF
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respectively
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*/
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template <class A1, class A2, class R>
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class eoSTLBF : public std::binary_function<A1, A2, R>
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{
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public:
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eoSTLBF(eoUF<A1,R>& _f) : f(_f) {}
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R operator()(A1 a1, A2 a2)
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{
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return f(a1, a2);
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}
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private:
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eoBF<A1, A2, R>& f;
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};
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//! @todo: put automated wrappers here...
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/** @} */
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#endif
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