Teuchos - Trilinos Tools Package  Version of the Day
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
Teuchos_getBaseObjVoidPtr.hpp
1 // @HEADER
2 // ***********************************************************************
3 //
4 // Teuchos: Common Tools Package
5 // Copyright (2004) Sandia Corporation
6 //
7 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
8 // license for use of this work by or on behalf of the U.S. Government.
9 //
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions are
12 // met:
13 //
14 // 1. Redistributions of source code must retain the above copyright
15 // notice, this list of conditions and the following disclaimer.
16 //
17 // 2. Redistributions in binary form must reproduce the above copyright
18 // notice, this list of conditions and the following disclaimer in the
19 // documentation and/or other materials provided with the distribution.
20 //
21 // 3. Neither the name of the Corporation nor the names of the
22 // contributors may be used to endorse or promote products derived from
23 // this software without specific prior written permission.
24 //
25 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
26 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
29 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 //
37 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
38 //
39 // ***********************************************************************
40 // @HEADER
41 
42 #ifndef TEUCHOS_GET_BASE_OBJ_VOID_PTR_HPP
43 #define TEUCHOS_GET_BASE_OBJ_VOID_PTR_HPP
44 
45 
46 #include "TeuchosCore_ConfigDefs.hpp"
47 #include "Teuchos_ConfigDefs.hpp"
48 
49 
50 #if defined(HAVE_TEUCHOSCORE_CXX11)
51 # define HAS_TEUCHOS_GET_BASE_OBJ_VOID_PTR 1
52 # include <type_traits>
53 #elif defined(HAVE_TEUCHOSCORE_BOOST) && defined(HAVE_TEUCHOSCORE_BOOST_IS_POLYMORPHIC)
54 # define HAS_TEUCHOS_GET_BASE_OBJ_VOID_PTR 1
55 # include <boost/type_traits/is_polymorphic.hpp>
56 #endif
57 
58 
59 namespace Teuchos {
60 
61 
62 #ifdef HAS_TEUCHOS_GET_BASE_OBJ_VOID_PTR
63 
64 
65 template<bool isPolymorphic, typename T>
66 class GetBaseObjVoidPtrImpl {};
67 
68 template<typename T>
69 class GetBaseObjVoidPtrImpl<true, T> {
70 public:
71  static const void* getBaseObjVoidPtr(T *p)
72  {
73  return dynamic_cast<const void*>(p);
74  }
75 };
76 
77 
78 template<typename T>
79 class GetBaseObjVoidPtrImpl<false, T> {
80 public:
81  static const void* getBaseObjVoidPtr(T *p)
82  {
83  return static_cast<const void*>(p);
84  }
85 };
86 
87 
104 template<typename T>
105 const void* getBaseObjVoidPtr(T *p)
106 {
107 #if defined(HAVE_TEUCHOSCORE_CXX11)
108  const bool isPoly = std::is_polymorphic<T>::value;
109 #elif defined(HAVE_TEUCHOSCORE_BOOST) && defined(HAVE_TEUCHOSCORE_BOOST_IS_POLYMORPHIC)
110  const bool isPoly = boost::is_polymorphic<T>::value;
111 #endif
112  typedef GetBaseObjVoidPtrImpl<isPoly, T> GBOVPT;
113  return GBOVPT::getBaseObjVoidPtr(p);
114 }
115 
116 
117 #endif // HAS_TEUCHOS_GET_BASE_OBJ_VOID_PTR
118 
119 
120 } // end namespace Teuchos
121 
122 
123 #endif // TEUCHOS_GET_BASE_OBJ_VOID_PTR_HPP
Teuchos header file which uses auto-configuration information to include necessary C++ headers...