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authorbecquet2007-05-10 18:49:20 +0000
committerbecquet2007-05-10 18:49:20 +0000
commit8f486613be58ced269db1d437e560c16558604e8 (patch)
tree41e94b2122a118cb06abf6fc2a0038cd1dfbec4a /i/chuck/src/utils/callback.hh
parent4daa2c76c2a028e4b2c8ab379e7d1e0f535a0a31 (diff)
Création de chuck, le programme du robot 2007.
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+#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 <stdexcept>
+
+/// Class to store a callback. This callback can be of any type (function or
+/// fonctor).
+template<typename R>
+class Callback
+{
+ class AbstractHolder;
+ AbstractHolder *holder_;
+ public:
+ /// Return value.
+ typedef R result_type;
+ public:
+ /// Default constructor. Make an empty callback.
+ Callback (void);
+ /// Constructor.
+ template<typename T>
+ 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<typename T>
+ 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<typename T>
+ 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