is_same_base_type.h
Go to the documentation of this file.00001 /******************************************************************************* 00002 * 00003 * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de> 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 00010 * * Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * 00013 * * Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in 00015 * the documentation and/or other materials provided with the 00016 * distribution. 00017 * 00018 * * Neither the name of the copyright holders nor the names of 00019 * contributors may be used to endorse or promote products derived 00020 * from this software without specific prior written permission. 00021 * 00022 * 00023 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00024 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00025 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00026 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00027 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00028 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00029 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00030 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00031 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00032 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00033 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00034 * 00035 * 00036 * $Id$ 00037 * 00038 ******************************************************************************/ 00039 00040 #ifndef __IsSameBaseType_h__ 00041 #define __IsSameBaseType_h__ 00042 00043 #include <boost/type_traits/is_same.hpp> 00044 #include "config/type_traits/contains_type.h" 00045 00046 namespace famouso { 00047 namespace mw { 00048 namespace attributes { 00049 namespace type_traits { 00050 00063 template <typename A, typename B> 00064 struct is_same_base_type { 00065 00066 CONTAINS_TYPE_(base_type); 00067 00068 template <bool, typename T, typename U> 00069 struct is_same_base_type_impl : 00070 boost::is_same< 00071 typename T::base_type, 00072 typename U::base_type 00073 > {}; 00074 00075 template <typename T, typename U> 00076 struct is_same_base_type_impl<false,T,U> { 00077 enum{ 00078 value = 0 00079 }; 00080 }; 00081 00082 typedef is_same_base_type type; 00083 00084 enum { 00085 value = is_same_base_type_impl< 00086 contains_type_base_type< A >::value 00087 && 00088 contains_type_base_type< B >::value , 00089 A, 00090 B 00091 >::value 00092 }; 00093 }; 00094 00095 } /* type_traits */ 00096 } /* attributes */ 00097 } /* mw */ 00098 } /* famouso */ 00099 00100 #endif 00101