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