RSC  0.16.0
Accessors.h
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1 /* ============================================================
2  *
3  * This file is part of the RSC project
4  *
5  * Copyright (C) 2010, 2011 Jan Moringen
6  *
7  * This file may be licensed under the terms of the
8  * GNU Lesser General Public License Version 3 (the ``LGPL''),
9  * or (at your option) any later version.
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11  * Software distributed under the License is distributed
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21  * The development of this software was supported by:
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23  * Bielefeld University
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25  * ============================================================ */
26 
27 #pragma once
28 
29 #include <boost/shared_ptr.hpp>
30 
31 #include "detail/ForceConst.h"
32 
33 namespace rsc {
34 namespace patterns {
35 
36 struct pass_through {
37 };
38 
42 template<typename T>
43 struct dereferencer {
44  typedef T& result_type;
45 
46  inline result_type operator()(T* t) const {
47  return *t;
48  }
49 
51  operator()(const T* t) const {
52  return *t;
53  }
54 };
55 
59 template<typename T>
61  typedef T& result_type;
62 
63  inline result_type operator()(boost::shared_ptr<T> t) const {
64  return *t;
65  }
66 
68  operator()(boost::shared_ptr<const T> t) const {
69  return *t;
70  }
71 };
72 
73 }
74 }
boost::mpl::if_< typename boost::is_reference< T >::type, typename boost::add_reference< typename boost::add_const< typename boost::remove_reference< T >::type >::type >::type, typename boost::add_const< T >::type >::type type
Definition: ForceConst.h:43
detail::force_const< result_type >::type operator()(const T *t) const
Definition: Accessors.h:51
detail::force_const< result_type >::type operator()(boost::shared_ptr< const T > t) const
Definition: Accessors.h:68
result_type operator()(boost::shared_ptr< T > t) const
Definition: Accessors.h:63
result_type operator()(T *t) const
Definition: Accessors.h:46