00001 /* ///////////////////////////////////////////////////////////////////////// 00002 * File: stlsoft/util/std_swap.hpp 00003 * 00004 * Purpose: Contains the std_swap() function. 00005 * 00006 * Created: 27th June 2005 00007 * Updated: 10th August 2009 00008 * 00009 * Home: http://stlsoft.org/ 00010 * 00011 * Copyright (c) 2005-2009, 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 00047 #ifndef STLSOFT_INCL_STLSOFT_UTIL_HPP_STD_SWAP 00048 #define STLSOFT_INCL_STLSOFT_UTIL_HPP_STD_SWAP 00049 00050 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00051 # define STLSOFT_VER_STLSOFT_UTIL_HPP_STD_SWAP_MAJOR 1 00052 # define STLSOFT_VER_STLSOFT_UTIL_HPP_STD_SWAP_MINOR 2 00053 # define STLSOFT_VER_STLSOFT_UTIL_HPP_STD_SWAP_REVISION 2 00054 # define STLSOFT_VER_STLSOFT_UTIL_HPP_STD_SWAP_EDIT 18 00055 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00056 00057 /* ///////////////////////////////////////////////////////////////////////// 00058 * Auto-generation and compatibility 00059 */ 00060 00061 /* 00062 [<[STLSOFT-AUTO:NO-UNITTEST]>] 00063 */ 00064 00065 /* ///////////////////////////////////////////////////////////////////////// 00066 * Includes 00067 */ 00068 00069 #ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT 00070 # include <stlsoft/stlsoft.h> 00071 #endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */ 00072 #if !defined(STLSOFT_CF_std_NAMESPACE) 00073 # define STLSOFT_STD_SWAP_NO_USE_STD 00074 #endif /* !STLSOFT_CF_std_NAMESPACE */ 00075 #if !defined(STLSOFT_STD_SWAP_NO_USE_STD) 00076 # include <algorithm> 00077 #endif /* STLSOFT_STD_SWAP_NO_USE_STD */ 00078 00079 /* ///////////////////////////////////////////////////////////////////////// 00080 * Namespace 00081 */ 00082 00083 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00084 00085 #ifndef _STLSOFT_NO_NAMESPACE 00086 namespace stlsoft_std_swap 00087 { 00088 #endif /* _STLSOFT_NO_NAMESPACE */ 00089 00090 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00091 00092 /* ///////////////////////////////////////////////////////////////////////// 00093 * Functions 00094 */ 00095 00096 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00097 00098 // This is defined only when the std namespace is not. 00099 #ifdef STLSOFT_STD_SWAP_NO_USE_STD 00100 # ifndef _STLSOFT_NO_NAMESPACE 00101 namespace stlsoft_nostd_util 00102 { 00103 # endif /* _STLSOFT_NO_NAMESPACE */ 00104 00105 template<ss_typename_param_k T> 00106 inline void swap(T& lhs, T& rhs) 00107 { 00108 T tmp(lhs); 00109 00110 lhs = rhs; 00111 rhs = tmp; 00112 } 00113 00114 # ifndef _STLSOFT_NO_NAMESPACE 00115 } // namespace stlsoft_nostd_util 00116 # endif /* _STLSOFT_NO_NAMESPACE */ 00117 #endif /* STLSOFT_STD_SWAP_NO_USE_STD */ 00118 00119 00132 template<ss_typename_param_k T> 00133 inline void std_swap(T& lhs, T& rhs) 00134 { 00135 // Here we introduce the 'std' implementation, via a using namespace 'std' 00136 // directive, so that Argument-Dependent Lookup can have the best grab 00137 00138 #ifdef STLSOFT_STD_SWAP_NO_USE_STD 00139 # ifndef _STLSOFT_NO_NAMESPACE 00140 using namespace stlsoft_nostd_util; 00141 # endif /* !_STLSOFT_NO_NAMESPACE */ 00142 #else /* ? STLSOFT_STD_SWAP_NO_USE_STD */ 00143 # ifdef STLSOFT_CF_std_NAMESPACE 00144 # if ( ( defined(STLSOFT_COMPILER_IS_INTEL) && \ 00145 defined(_MSC_VER)) || \ 00146 defined(STLSOFT_COMPILER_IS_MSVC)) && \ 00147 _MSC_VER < 1310 00148 using std::swap; 00149 # else /* ? compiler */ 00150 using namespace std; 00151 # endif /* compiler */ 00152 # endif /* STLSOFT_CF_std_NAMESPACE */ 00153 #endif /* STLSOFT_STD_SWAP_NO_USE_STD */ 00154 00155 swap(lhs, rhs); 00156 } 00157 00158 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00159 00160 /* ////////////////////////////////////////////////////////////////////// */ 00161 00162 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00163 00164 #ifndef _STLSOFT_NO_NAMESPACE 00165 } // namespace stlsoft_std_swap 00166 #endif /* _STLSOFT_NO_NAMESPACE */ 00167 00168 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00169 00170 #ifndef _STLSOFT_NO_NAMESPACE 00171 namespace stlsoft 00172 { 00182 template<ss_typename_param_k T> 00183 inline void std_swap(T& lhs, T& rhs) 00184 { 00185 // Defer to std_swap implementation in stlsoft_std_swap namespace 00186 // 00187 // This is to 'isolate' the selection of the swap() algorithm out of 00188 // the stlsoft namespace, so both stlsoft and std get equal byte at the 00189 // type resolution 00190 00191 stlsoft_std_swap::std_swap(lhs, rhs); 00192 } 00193 00194 } // namespace stlsoft 00195 00196 #endif /* _STLSOFT_NO_NAMESPACE */ 00197 00198 /* ////////////////////////////////////////////////////////////////////// */ 00199 00200 #endif /* !STLSOFT_INCL_STLSOFT_UTIL_HPP_STD_SWAP */ 00201 00202 /* ///////////////////////////// end of file //////////////////////////// */