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QxOrm
1.2.3
C++ Object Relational Mapping library
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00001 /**************************************************************************** 00002 ** 00003 ** http://www.qxorm.com/ 00004 ** http://sourceforge.net/projects/qxorm/ 00005 ** Original file by Lionel Marty 00006 ** 00007 ** This file is part of the QxOrm library 00008 ** 00009 ** This software is provided 'as-is', without any express or implied 00010 ** warranty. In no event will the authors be held liable for any 00011 ** damages arising from the use of this software. 00012 ** 00013 ** GNU Lesser General Public License Usage 00014 ** This file must be used under the terms of the GNU Lesser 00015 ** General Public License version 2.1 as published by the Free Software 00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the 00017 ** packaging of this file. Please review the following information to 00018 ** ensure the GNU Lesser General Public License version 2.1 requirements 00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 00020 ** 00021 ** If you have questions regarding the use of this file, please contact : 00022 ** contact@qxorm.com 00023 ** 00024 ****************************************************************************/ 00025 00026 #ifndef _QX_FOREACH_H_ 00027 #define _QX_FOREACH_H_ 00028 00029 #ifdef _MSC_VER 00030 #pragma once 00031 #endif 00032 00049 #include <boost/foreach.hpp> 00050 00051 #ifndef BOOST_FOREACH_ID 00052 #define BOOST_FOREACH_ID(x) x 00053 #endif 00054 00055 #include <QxTraits/is_qx_collection.h> 00056 00057 namespace qx { 00058 00059 namespace foreach { 00060 00061 template<typename T, typename C, bool is_qx_collection = false> 00062 struct qx_deref_boost_or_qx 00063 { 00064 typedef typename boost::foreach_detail_::foreach_reference<T, C>::type type; 00065 }; 00066 00067 template<typename T, typename C> 00068 struct qx_deref_boost_or_qx<T, C, true> 00069 { 00070 typedef typename T::type_pair_key_value::second_type type; 00071 }; 00072 00073 template<typename T, typename C, bool is_qx_collection = false> 00074 struct qx_deref_deduce 00075 { 00076 static inline typename qx::foreach::qx_deref_boost_or_qx<T, C, false>::type 00077 deref(boost::foreach_detail_::auto_any_t cur, boost::foreach_detail_::type2type<T, C> * ptmp) 00078 { return boost::foreach_detail_::deref(cur, ptmp); } 00079 00080 static inline typename qx::foreach::qx_deref_boost_or_qx<T, C, false>::type 00081 rderef(boost::foreach_detail_::auto_any_t cur, boost::foreach_detail_::type2type<T, C> * ptmp) 00082 { return boost::foreach_detail_::rderef(cur, ptmp); } 00083 }; 00084 00085 template<typename T, typename C> 00086 struct qx_deref_deduce<T, C, true> 00087 { 00088 static inline typename qx::foreach::qx_deref_boost_or_qx<T, C, true>::type 00089 deref(boost::foreach_detail_::auto_any_t cur, boost::foreach_detail_::type2type<T, C> * ptmp) 00090 { return boost::foreach_detail_::deref(cur, ptmp).second; } 00091 00092 static inline typename qx::foreach::qx_deref_boost_or_qx<T, C, true>::type 00093 rderef(boost::foreach_detail_::auto_any_t cur, boost::foreach_detail_::type2type<T, C> * ptmp) 00094 { return boost::foreach_detail_::rderef(cur, ptmp).second; } 00095 }; 00096 00097 struct qx_deref 00098 { 00099 template<typename T, typename C> 00100 static inline typename qx::foreach::qx_deref_boost_or_qx<T, C, qx::trait::is_qx_collection<T>::value>::type 00101 deref(boost::foreach_detail_::auto_any_t cur, boost::foreach_detail_::type2type<T, C> * ptmp) 00102 { return qx::foreach::qx_deref_deduce<T, C, qx::trait::is_qx_collection<T>::value>::deref(cur, ptmp); } 00103 00104 template<typename T, typename C> 00105 static inline typename qx::foreach::qx_deref_boost_or_qx<T, C, qx::trait::is_qx_collection<T>::value>::type 00106 deref_reverse(boost::foreach_detail_::auto_any_t cur, boost::foreach_detail_::type2type<T, C> * ptmp) 00107 { return qx::foreach::qx_deref_deduce<T, C, qx::trait::is_qx_collection<T>::value>::rderef(cur, ptmp); } 00108 }; 00109 00110 } // namespace foreach 00111 00112 } // namespace qx 00113 00114 #define QX_FOREACH_DEREF(COL) \ 00115 qx::foreach::qx_deref::deref(BOOST_FOREACH_ID(_foreach_cur), BOOST_FOREACH_TYPEOF(COL)) 00116 00117 #define QX_FOREACH_DEREF_REVERSE(COL) \ 00118 qx::foreach::qx_deref::deref_reverse(BOOST_FOREACH_ID(_foreach_cur), BOOST_FOREACH_TYPEOF(COL)) 00119 00120 #define QX_FOREACH(VAR, COL) \ 00121 BOOST_FOREACH_PREAMBLE() \ 00122 if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_col) = BOOST_FOREACH_CONTAIN(COL)) {} else \ 00123 if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_BEGIN(COL)) {} else \ 00124 if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_end) = BOOST_FOREACH_END(COL)) {} else \ 00125 for (bool BOOST_FOREACH_ID(_foreach_continue) = true; \ 00126 BOOST_FOREACH_ID(_foreach_continue) && !BOOST_FOREACH_DONE(COL); \ 00127 BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_NEXT(COL) : (void)0) \ 00128 if (boost::foreach_detail_::set_false(BOOST_FOREACH_ID(_foreach_continue))) {} else \ 00129 for (VAR = QX_FOREACH_DEREF(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true) 00130 00131 #define QX_FOREACH_REVERSE(VAR, COL) \ 00132 BOOST_FOREACH_PREAMBLE() \ 00133 if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_col) = BOOST_FOREACH_CONTAIN(COL)) {} else \ 00134 if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_RBEGIN(COL)) {} else \ 00135 if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_end) = BOOST_FOREACH_REND(COL)) {} else \ 00136 for (bool BOOST_FOREACH_ID(_foreach_continue) = true; \ 00137 BOOST_FOREACH_ID(_foreach_continue) && !BOOST_FOREACH_RDONE(COL); \ 00138 BOOST_FOREACH_ID(_foreach_continue) ? BOOST_FOREACH_RNEXT(COL) : (void)0) \ 00139 if (boost::foreach_detail_::set_false(BOOST_FOREACH_ID(_foreach_continue))) {} else \ 00140 for (VAR = QX_FOREACH_DEREF_REVERSE(COL); !BOOST_FOREACH_ID(_foreach_continue); BOOST_FOREACH_ID(_foreach_continue) = true) 00141 00142 #ifdef _foreach 00143 #undef _foreach 00144 #endif // _foreach 00145 00146 #ifdef _foreach_reverse 00147 #undef _foreach_reverse 00148 #endif // _foreach_reverse 00149 00150 #ifdef _foreach_if 00151 #undef _foreach_if 00152 #endif // _foreach_if 00153 00154 #ifdef _foreach_reverse_if 00155 #undef _foreach_reverse_if 00156 #endif // _foreach_reverse_if 00157 00158 #define _foreach QX_FOREACH 00159 #define _foreach_reverse QX_FOREACH_REVERSE 00160 00161 #define _foreach_if(VAR, COL, COND) _foreach(VAR, COL) if (COND) 00162 #define _foreach_reverse_if(VAR, COL, COND) _foreach_reverse(VAR, COL) if (COND) 00163 00164 #endif // _QX_FOREACH_H_