1 // The template and inlines for the -*- C++ -*- indirect_array class. 2 3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 4 // Free Software Foundation, Inc. 5 // 6 // This file is part of the GNU ISO C++ Library. This library is free 7 // software; you can redistribute it and/or modify it under the 8 // terms of the GNU General Public License as published by the 9 // Free Software Foundation; either version 2, or (at your option) 10 // any later version. 11 12 // This library is distributed in the hope that it will be useful, 13 // but WITHOUT ANY WARRANTY; without even the implied warranty of 14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 // GNU General Public License for more details. 16 17 // You should have received a copy of the GNU General Public License along 18 // with this library; see the file COPYING. If not, write to the Free 19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 20 // USA. 21 22 // As a special exception, you may use this file as part of a free software 23 // library without restriction. Specifically, if other files instantiate 24 // templates or use macros or inline functions from this file, or you compile 25 // this file and link it with other files to produce an executable, this 26 // file does not by itself cause the resulting executable to be covered by 27 // the GNU General Public License. This exception does not however 28 // invalidate any other reasons why the executable file might be covered by 29 // the GNU General Public License. 30 31 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr> 32 33 /** @file indirect_array.h 34 * This is an internal header file, included by other library headers. 35 * You should not attempt to use it directly. 36 */ 37 38 #ifndef _CPP_BITS_INDIRECT_ARRAY_H 39 #define _CPP_BITS_INDIRECT_ARRAY_H 1 40 41 #pragma GCC system_header 42 43 namespace std 44 { 45 template <class _Tp> 46 class indirect_array 47 { 48 public: 49 typedef _Tp value_type; 50 51 // XXX: This is a proposed resolution for DR-253. 52 indirect_array& operator=(const indirect_array&); 53 54 void operator=(const valarray<_Tp>&) const; 55 void operator*=(const valarray<_Tp>&) const; 56 void operator/=(const valarray<_Tp>&) const; 57 void operator%=(const valarray<_Tp>&) const; 58 void operator+=(const valarray<_Tp>&) const; 59 void operator-=(const valarray<_Tp>&) const; 60 void operator^=(const valarray<_Tp>&) const; 61 void operator&=(const valarray<_Tp>&) const; 62 void operator|=(const valarray<_Tp>&) const; 63 void operator<<=(const valarray<_Tp>&) const; 64 void operator>>=(const valarray<_Tp>&) const; 65 void operator= (const _Tp&) const; 66 // ~indirect_array(); 67 68 template<class _Dom> 69 void operator=(const _Expr<_Dom, _Tp>&) const; 70 template<class _Dom> 71 void operator*=(const _Expr<_Dom, _Tp>&) const; 72 template<class _Dom> 73 void operator/=(const _Expr<_Dom, _Tp>&) const; 74 template<class _Dom> 75 void operator%=(const _Expr<_Dom, _Tp>&) const; 76 template<class _Dom> 77 void operator+=(const _Expr<_Dom, _Tp>&) const; 78 template<class _Dom> 79 void operator-=(const _Expr<_Dom, _Tp>&) const; 80 template<class _Dom> 81 void operator^=(const _Expr<_Dom, _Tp>&) const; 82 template<class _Dom> 83 void operator&=(const _Expr<_Dom, _Tp>&) const; 84 template<class _Dom> 85 void operator|=(const _Expr<_Dom, _Tp>&) const; 86 template<class _Dom> 87 void operator<<=(const _Expr<_Dom, _Tp>&) const; 88 template<class _Dom> 89 void operator>>=(const _Expr<_Dom, _Tp>&) const; 90 91 private: 92 indirect_array(const indirect_array&); 93 indirect_array(_Array<_Tp>, size_t, _Array<size_t>); 94 95 friend class valarray<_Tp>; 96 friend class gslice_array<_Tp>; 97 98 const size_t _M_sz; 99 const _Array<size_t> _M_index; 100 const _Array<_Tp> _M_array; 101 102 // not implemented 103 indirect_array(); 104 }; 105 106 template<typename _Tp> 107 inline indirect_array(const indirect_array<_Tp> & __a)108 indirect_array<_Tp>::indirect_array(const indirect_array<_Tp>& __a) 109 : _M_sz(__a._M_sz), _M_index(__a._M_index), _M_array(__a._M_array) {} 110 111 template<typename _Tp> 112 inline indirect_array(_Array<_Tp> __a,size_t __s,_Array<size_t> __i)113 indirect_array<_Tp>::indirect_array(_Array<_Tp> __a, size_t __s, 114 _Array<size_t> __i) 115 : _M_sz(__s), _M_index(__i), _M_array(__a) {} 116 117 template<typename _Tp> 118 inline indirect_array<_Tp>& 119 indirect_array<_Tp>::operator=(const indirect_array<_Tp>& __a) 120 { 121 __valarray_copy(__a._M_array, _M_sz, __a._M_index, _M_array, _M_index); 122 return *this; 123 } 124 125 126 template<typename _Tp> 127 inline void 128 indirect_array<_Tp>::operator=(const _Tp& __t) const 129 { __valarray_fill(_M_array, _M_index, _M_sz, __t); } 130 131 template<typename _Tp> 132 inline void 133 indirect_array<_Tp>::operator=(const valarray<_Tp>& __v) const 134 { __valarray_copy(_Array<_Tp>(__v), _M_sz, _M_array, _M_index); } 135 136 template<typename _Tp> 137 template<class _Dom> 138 inline void 139 indirect_array<_Tp>::operator=(const _Expr<_Dom,_Tp>& __e) const 140 { __valarray_copy(__e, _M_sz, _M_array, _M_index); } 141 142 #undef _DEFINE_VALARRAY_OPERATOR 143 #define _DEFINE_VALARRAY_OPERATOR(_Op, _Name) \ 144 template<typename _Tp> \ 145 inline void \ 146 indirect_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const\ 147 { \ 148 _Array_augmented_##_Name(_M_array, _M_index, _Array<_Tp>(__v), _M_sz); \ 149 } \ 150 \ 151 template<typename _Tp> \ 152 template<class _Dom> \ 153 inline void \ 154 indirect_array<_Tp>::operator _Op##=(const _Expr<_Dom,_Tp>& __e) const\ 155 { \ 156 _Array_augmented_##_Name(_M_array, _M_index, __e, _M_sz); \ 157 } 158 159 _DEFINE_VALARRAY_OPERATOR(*, __multiplies) 160 _DEFINE_VALARRAY_OPERATOR(/, __divides) 161 _DEFINE_VALARRAY_OPERATOR(%, __modulus) 162 _DEFINE_VALARRAY_OPERATOR(+, __plus) 163 _DEFINE_VALARRAY_OPERATOR(-, __minus) 164 _DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor) 165 _DEFINE_VALARRAY_OPERATOR(&, __bitwise_and) 166 _DEFINE_VALARRAY_OPERATOR(|, __bitwise_or) 167 _DEFINE_VALARRAY_OPERATOR(<<, __shift_left) 168 _DEFINE_VALARRAY_OPERATOR(>>, __shift_right) 169 170 #undef _DEFINE_VALARRAY_OPERATOR 171 172 } // std:: 173 174 #endif /* _CPP_BITS_INDIRECT_ARRAY_H */ 175 176 // Local Variables: 177 // mode:c++ 178 // End: 179