107 lines
2.3 KiB
C++
107 lines
2.3 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2005, 2006, 2007, 2010, 2011 Ciaran McCreesh
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PALUDIS_GUARD_PALUDIS_PRIVATE_IMPLEMENTATION_PATTERN_HH
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#define PALUDIS_GUARD_PALUDIS_PRIVATE_IMPLEMENTATION_PATTERN_HH 1
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/** \file
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* Declarations for the Pimp pattern.
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*
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* \ingroup g_oo
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*
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* \section Examples
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*
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* - None at this time.
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*/
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namespace paludis
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{
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/**
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* Private implementation data, to be specialised for any class that
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* uses Pimp.
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*
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* \ingroup g_oo
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*/
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template <typename C_>
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struct Imp;
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/**
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* Pointer to our implementation data.
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*
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* \ingroup g_oo
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* \since 0.58
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*/
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template <typename C_>
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class Pimp
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{
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private:
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Imp<C_> * _ptr;
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public:
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///\name Basic operations
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///\{
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template <typename... Args_>
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explicit Pimp(Args_ && ... args);
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~Pimp();
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Pimp(Pimp &&);
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Pimp(const Pimp &) = delete;
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Pimp & operator= (const Pimp &) = delete;
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///\}
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///\name Dereference operators
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//\{
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inline Imp<C_> * operator-> ();
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inline const Imp<C_> * operator-> () const;
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Imp<C_> * get();
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const Imp<C_> * get() const;
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///\}
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/**
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* Reset to a new Imp.
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*/
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void reset(Imp<C_> * p);
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};
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}
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template <typename C_>
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paludis::Imp<C_> *
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paludis::Pimp<C_>::operator-> ()
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{
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return _ptr;
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}
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template <typename C_>
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const paludis::Imp<C_> *
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paludis::Pimp<C_>::operator-> () const
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{
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return _ptr;
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}
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#endif
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