Teuchos Package Browser (Single Doxygen Collection) Version of the Day
Teuchos_getBaseObjVoidPtr.hpp
Go to the documentation of this file.
00001 // @HEADER
00002 // ***********************************************************************
00003 //
00004 //                    Teuchos: Common Tools Package
00005 //                 Copyright (2004) Sandia Corporation
00006 //
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 //
00010 // Redistribution and use in source and binary forms, with or without
00011 // modification, are permitted provided that the following conditions are
00012 // met:
00013 //
00014 // 1. Redistributions of source code must retain the above copyright
00015 // notice, this list of conditions and the following disclaimer.
00016 //
00017 // 2. Redistributions in binary form must reproduce the above copyright
00018 // notice, this list of conditions and the following disclaimer in the
00019 // documentation and/or other materials provided with the distribution.
00020 //
00021 // 3. Neither the name of the Corporation nor the names of the
00022 // contributors may be used to endorse or promote products derived from
00023 // this software without specific prior written permission.
00024 //
00025 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
00026 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00027 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00028 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
00029 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00030 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00031 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00032 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00033 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00034 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00035 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00036 //
00037 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
00038 //
00039 // ***********************************************************************
00040 // @HEADER
00041 
00042 #ifndef TEUCHOS_GET_BASE_OBJ_VOID_PTR
00043 #define TEUCHOS_GET_BASE_OBJ_VOID_PTR
00044 
00045 
00046 #include "Teuchos_ConfigDefs.hpp"
00047 
00048 
00049 #if defined(HAVE_TEUCHOS_BOOST) && defined(HAS_TEUCHOS_BOOST_IS_POLYMORPHIC)
00050 
00051 
00052 // Internal Trilinos code should check if the macro is defined to see if
00053 // getBaseObjPtr() is supported or not.
00054 #define HAS_TEUCHOS_GET_BASE_OBJ_VOID_PTR 1
00055 
00056 
00057 #include <boost/type_traits/is_polymorphic.hpp>
00058 
00059 
00060 namespace Teuchos {
00061 
00062 
00063 template<bool isPolymorphic, typename T>
00064 class GetBaseObjVoidPtrImpl {};
00065 
00066 template<typename T>
00067 class GetBaseObjVoidPtrImpl<true, T> {
00068 public:
00069   static const void* getBaseObjVoidPtr(T *p)
00070     {
00071       return dynamic_cast<const void*>(p);
00072     } 
00073 };
00074 
00075 
00076 template<typename T>
00077 class GetBaseObjVoidPtrImpl<false, T> {
00078 public:
00079   static const void* getBaseObjVoidPtr(T *p)
00080     {
00081       return static_cast<const void*>(p);
00082     }
00083 };
00084 
00085 
00102 template<typename T>
00103 const void* getBaseObjVoidPtr(T *p)
00104 {
00105   typedef GetBaseObjVoidPtrImpl<boost::is_polymorphic<T>::value, T> GBOVPT;
00106   return GBOVPT::getBaseObjVoidPtr(p);
00107 }
00108 
00109 
00110 } // end namespace Teuchos
00111 
00112 
00113 #endif // defined(HAVE_TEUCHOS_BOOST) && defined(HAS_TEUCHOS_BOOST_IS_POLYMORPHIC)
00114 
00115 
00116 #endif // TEUCHOS_GET_BASE_OBJ_VOID_PTR
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines