00001 /* ///////////////////////////////////////////////////////////////////////// 00002 * File: stlsoft/meta/is_pointer_type.hpp (originally MTBase.h, ::SynesisStl) 00003 * 00004 * Purpose: Tests whether a type is a pointer. 00005 * 00006 * Created: 19th November 1998 00007 * Updated: 10th August 2009 00008 * 00009 * Home: http://stlsoft.org/ 00010 * 00011 * Copyright (c) 1998-2009, Matthew Wilson and Synesis Software 00012 * All rights reserved. 00013 * 00014 * Redistribution and use in source and binary forms, with or without 00015 * modification, are permitted provided that the following conditions are met: 00016 * 00017 * - Redistributions of source code must retain the above copyright notice, this 00018 * list of conditions and the following disclaimer. 00019 * - Redistributions in binary form must reproduce the above copyright notice, 00020 * this list of conditions and the following disclaimer in the documentation 00021 * and/or other materials provided with the distribution. 00022 * - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of 00023 * any contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00027 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00028 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00029 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00030 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00031 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00032 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00033 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00034 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00035 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00036 * POSSIBILITY OF SUCH DAMAGE. 00037 * 00038 * ////////////////////////////////////////////////////////////////////// */ 00039 00040 00048 #ifndef STLSOFT_INCL_STLSOFT_META_HPP_IS_POINTER_TYPE 00049 #define STLSOFT_INCL_STLSOFT_META_HPP_IS_POINTER_TYPE 00050 00051 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00052 # define STLSOFT_VER_STLSOFT_META_HPP_IS_POINTER_TYPE_MAJOR 4 00053 # define STLSOFT_VER_STLSOFT_META_HPP_IS_POINTER_TYPE_MINOR 0 00054 # define STLSOFT_VER_STLSOFT_META_HPP_IS_POINTER_TYPE_REVISION 1 00055 # define STLSOFT_VER_STLSOFT_META_HPP_IS_POINTER_TYPE_EDIT 118 00056 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00057 00058 /* ///////////////////////////////////////////////////////////////////////// 00059 * Includes 00060 */ 00061 00062 #ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT 00063 # include <stlsoft/stlsoft.h> 00064 #endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */ 00065 #ifndef STLSOFT_INCL_STLSOFT_META_HPP_N_TYPES 00066 # include <stlsoft/meta/n_types.hpp> 00067 #endif /* !STLSOFT_INCL_STLSOFT_META_HPP_N_TYPES */ 00068 00069 /* ///////////////////////////////////////////////////////////////////////// 00070 * Namespace 00071 */ 00072 00073 #ifndef _STLSOFT_NO_NAMESPACE 00074 namespace stlsoft 00075 { 00076 #endif /* _STLSOFT_NO_NAMESPACE */ 00077 00078 /* ///////////////////////////////////////////////////////////////////////// 00079 * Classes 00080 */ 00081 00082 // is_pointer_type 00083 // 00089 template <ss_typename_param_k U> 00090 one_t is_pointer_type_func(U const volatile *); 00091 00092 two_t is_pointer_type_func(...); 00093 00099 template <ss_typename_param_k T> 00100 struct is_pointer_type 00101 { 00102 typedef T test_type; 00103 00104 private: 00105 static T t; 00106 public: 00107 enum { value = sizeof(is_pointer_type_func(t)) == sizeof(one_t) }; 00108 }; 00109 00110 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00111 00112 STLSOFT_TEMPLATE_SPECIALISATION 00113 struct is_pointer_type<void> 00114 { 00115 enum { value = 0 }; 00116 }; 00117 00118 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00119 00120 /* ////////////////////////////////////////////////////////////////////// */ 00121 00122 #ifndef _STLSOFT_NO_NAMESPACE 00123 } // namespace stlsoft 00124 #endif /* _STLSOFT_NO_NAMESPACE */ 00125 00126 /* ////////////////////////////////////////////////////////////////////// */ 00127 00128 #endif /* !STLSOFT_INCL_STLSOFT_META_HPP_IS_POINTER_TYPE */ 00129 00130 /* ///////////////////////////// end of file //////////////////////////// */