From 8f486613be58ced269db1d437e560c16558604e8 Mon Sep 17 00:00:00 2001 From: becquet Date: Thu, 10 May 2007 18:49:20 +0000 Subject: Création de chuck, le programme du robot 2007. --- i/chuck/src/utils/callback.hh | 96 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 i/chuck/src/utils/callback.hh (limited to 'i/chuck/src/utils/callback.hh') diff --git a/i/chuck/src/utils/callback.hh b/i/chuck/src/utils/callback.hh new file mode 100644 index 0000000..ab1311c --- /dev/null +++ b/i/chuck/src/utils/callback.hh @@ -0,0 +1,96 @@ +#ifndef callback_hh +#define callback_hh +// callback.hh +// marvin - programme du robot 2006. {{{ +// +// Copyright (C) 2003-2006 Nicolas Schodet +// +// Robot APB Team/Efrei 2006. +// Web: http://assos.efrei.fr/robot/ +// Email: robot AT efrei DOT fr +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} + +#include + +/// Class to store a callback. This callback can be of any type (function or +/// fonctor). +template +class Callback +{ + class AbstractHolder; + AbstractHolder *holder_; + public: + /// Return value. + typedef R result_type; + public: + /// Default constructor. Make an empty callback. + Callback (void); + /// Constructor. + template + Callback (T callback); + /// Copy constructor. + Callback (const Callback &other); + /// Destructor. + ~Callback (void); + /// Assignement operator. + Callback &operator= (const Callback &rhs); + /// Call the contained callback. + R operator () (void); + /// Swap the callback content with another callback. + void swap (Callback &rhs); + /// Change the contained callback. + template + Callback &operator= (T rhs); + /// Test if empty. + bool empty (void) const; + /// Test if not empty. + operator bool (void) const; + private: + /// Abstract container. + class AbstractHolder + { + public: + virtual ~AbstractHolder (void); + virtual R operator () (void) = 0; + virtual AbstractHolder *clone (void) = 0; + }; + /// Templated container. + template + class Holder : public AbstractHolder + { + private: + T callback_; + public: + Holder (T callback); + virtual R operator () (void); + virtual AbstractHolder *clone (void); + }; +}; + +/// Exception thrown on call of an empty callback. +class bad_callback : public std::runtime_error +{ + public: + bad_callback (void) : std::runtime_error ("bad_callback: empty callback call") + { + } +}; + +#include "callback.tcc" + +#endif // callback_hh -- cgit v1.2.3