Lunchbox  1.11.0
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pluginRegisterer.h
1 
2 /* Copyright (c) 2013-2015, EPFL/Blue Brain Project
3  * Raphael Dumusc <raphael.dumusc@epfl.ch>
4  * Stefan.Eilemann@epfl.ch
5  *
6  * This file is part of Lunchbox <https://github.com/Eyescale/Lunchbox>
7  *
8  * This library is free software; you can redistribute it and/or modify it under
9  * the terms of the GNU Lesser General Public License version 2.1 as published
10  * by the Free Software Foundation.
11  *
12  * This library is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14  * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
15  * details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this library; if not, write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20  */
21 
22 #ifndef LUNCHBOX_PLUGINREGISTERER_H
23 #define LUNCHBOX_PLUGINREGISTERER_H
24 
25 #include <lunchbox/plugin.h> // used inline
26 #include <lunchbox/pluginFactory.h> // used inline
27 
28 #include <boost/bind.hpp> // used inline
29 #include <boost/version.hpp>
30 #if BOOST_VERSION >= 104300
31 # include <boost/functional/factory.hpp>
32 #else
33 # include <lunchbox/factory.hpp>
34 #endif
35 
36 namespace lunchbox
37 {
64 template< typename T > struct hasInitDataT
65 {
66  // SFINAE class to check whether class T has a typedef InitDataT
67  // If class has the typedef, "value" is known in compile time as true,
68  // else value is false.
69 
70  // SFINAE is used for specializing the PluginRegisterer class
71  // when no InitDataT is defined.
72  template<typename U> static char (&test(typename U::InitDataT const*))[1];
73  template<typename U> static char (&test(...))[2];
74  // cppcheck-suppress sizeofCalculation
75  static const bool value = (sizeof(test<T>(0)) == 1);
76 };
77 
78 template< typename Impl, bool hasInitData = hasInitDataT< Impl >::value >
80 {
81 public:
84 };
85 
90 template< typename Impl > class PluginRegisterer< Impl, true >
91 {
92 public:
95  {
97  boost::bind( boost::factory< Impl* >(), _1 ),
98  boost::bind( &Impl::handles, _1 ));
99  PluginFactory< typename Impl::PluginT,
100  typename Impl::InitDataT >::getInstance().
101  register_( plugin );
102  }
103 };
104 
109 template< typename Impl > class PluginRegisterer< Impl, false >
110 {
111 public:
114  {
116  boost::bind( boost::factory< Impl* >(), _1 ),
117  boost::bind( &Impl::handles, _1 ));
118 
120  register_( plugin );
121  }
122 };
123 
124 }
125 
126 #endif
PluginRegisterer()
Construct a registerer and register the Impl class.
Factory for Plugin classes.
Definition: pluginFactory.h:59
Helper class to statically register derived plugin classes.
Manages a class deriving from a PluginT interface.
Definition: plugin.h:47
static PluginFactory & getInstance()
Get the single class instance.
PluginRegisterer()
Construct a registerer and register the Impl class.
PluginRegisterer()
Construct a registerer and register the Impl class.