Akonadi

supertrait.h
1 /*
2  Copyright (c) 2009 Volker Krause <[email protected]>
3 
4  This library is free software; you can redistribute it and/or modify it
5  under the terms of the GNU Library General Public License as published by
6  the Free Software Foundation; either version 2 of the License, or (at your
7  option) any later version.
8 
9  This library is distributed in the hope that it will be useful, but WITHOUT
10  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
12  License for more details.
13 
14  You should have received a copy of the GNU Library General Public License
15  along with this library; see the file COPYING.LIB. If not, write to the
16  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17  02110-1301, USA.
18 */
19 
20 #ifndef AKONADI_SUPERTRAIT_H
21 #define AKONADI_SUPERTRAIT_H
22 
23 namespace Akonadi
24 {
25 
26 namespace Internal {
27 template<typename T> struct check_type{ typedef void type; };
28 }
29 
34 template <typename Super, typename = void>
36  typedef Super Type;
37 };
38 
39 template <typename Class>
40 struct SuperClassTrait<Class, typename Internal::check_type<typename Class::SuperClass>::type> {
41  typedef typename Class::SuperClass Type;
42 };
43 
60 template <typename Class> struct SuperClass : public SuperClassTrait<Class> {};
61 }
62 
63 #endif
Type type(const QString &mimeType)
Type trait to provide information about a base class for a given class.
Definition: supertrait.h:60
Helper integration between Akonadi and Qt.
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