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authorschodet2005-01-17 15:04:29 +0000
committerschodet2005-01-17 15:04:29 +0000
commit86c65de3ae99420ca7a2af406a97ade6aa989774 (patch)
tree6023b98ae17f991ba92e6f9a0dc698ee8beb524d /2005/i/robert/src/utils/callback.hh
parented3f0dae905fad5a6659657e7b4ee5f08c00ccd8 (diff)
Initial revision
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+#ifndef callback_hh
+#define callback_hh
+// callback.hh
+// robert - programme du robot 2005. {{{
+//
+// Copyright (C) 2004 Nicolas Schodet
+//
+// 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.
+//
+// Contact :
+// Web: http://perso.efrei.fr/~schodet/
+// Email: <contact@ni.fr.eu.org>
+// }}}
+
+#include <stdexcept>
+
+template<typename R>
+class Callback
+{
+ class AbstractHolder;
+ AbstractHolder *holder_;
+ public:
+ typedef R result_type;
+ public:
+ Callback (void);
+ template<typename T>
+ Callback (T callback);
+ Callback (const Callback &other);
+ ~Callback (void);
+ R operator () (void);
+ void swap (Callback &rhs);
+ Callback &operator= (const Callback &rhs);
+ template<typename T>
+ Callback &operator= (T rhs);
+ bool empty (void) const;
+ operator bool (void) const;
+ private:
+ class AbstractHolder
+ {
+ public:
+ virtual ~AbstractHolder (void);
+ virtual R operator () (void) = 0;
+ virtual AbstractHolder *clone (void) = 0;
+ };
+ template<typename T>
+ class Holder : public AbstractHolder
+ {
+ private:
+ T callback_;
+ public:
+ Holder (T callback);
+ virtual R operator () (void);
+ virtual AbstractHolder *clone (void);
+ };
+};
+
+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