indirect_array.h

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00001 // The template and inlines for the -*- C++ -*- indirect_array class. 00002 00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the 00007 // terms of the GNU General Public License as published by the 00008 // Free Software Foundation; either version 2, or (at your option) 00009 // any later version. 00010 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 00016 // You should have received a copy of the GNU General Public License along 00017 // with this library; see the file COPYING. If not, write to the Free 00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 00019 // USA. 00020 00021 // As a special exception, you may use this file as part of a free software 00022 // library without restriction. Specifically, if other files instantiate 00023 // templates or use macros or inline functions from this file, or you compile 00024 // this file and link it with other files to produce an executable, this 00025 // file does not by itself cause the resulting executable to be covered by 00026 // the GNU General Public License. This exception does not however 00027 // invalidate any other reasons why the executable file might be covered by 00028 // the GNU General Public License. 00029 00030 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr> 00031 00037 #ifndef _CPP_BITS_INDIRECT_ARRAY_H 00038 #define _CPP_BITS_INDIRECT_ARRAY_H 1 00039 00040 #pragma GCC system_header 00041 00042 namespace std 00043 { 00044 template <class _Tp> 00045 class indirect_array 00046 { 00047 public: 00048 typedef _Tp value_type; 00049 00050 // XXX: This is a proposed resolution for DR-253. 00051 indirect_array& operator= (const indirect_array&); 00052 00053 void operator= (const valarray<_Tp>&) const; 00054 void operator*= (const valarray<_Tp>&) const; 00055 void operator/= (const valarray<_Tp>&) const; 00056 void operator%= (const valarray<_Tp>&) const; 00057 void operator+= (const valarray<_Tp>&) const; 00058 void operator-= (const valarray<_Tp>&) const; 00059 void operator^= (const valarray<_Tp>&) const; 00060 void operator&= (const valarray<_Tp>&) const; 00061 void operator|= (const valarray<_Tp>&) const; 00062 void operator<<= (const valarray<_Tp>&) const; 00063 void operator>>= (const valarray<_Tp>&) const; 00064 void operator= (const _Tp&); 00065 // ~indirect_array(); 00066 00067 template<class _Dom> 00068 void operator= (const _Expr<_Dom, _Tp>&) const; 00069 template<class _Dom> 00070 void operator*= (const _Expr<_Dom, _Tp>&) const; 00071 template<class _Dom> 00072 void operator/= (const _Expr<_Dom, _Tp>&) const; 00073 template<class _Dom> 00074 void operator%= (const _Expr<_Dom, _Tp>&) const; 00075 template<class _Dom> 00076 void operator+= (const _Expr<_Dom, _Tp>&) const; 00077 template<class _Dom> 00078 void operator-= (const _Expr<_Dom, _Tp>&) const; 00079 template<class _Dom> 00080 void operator^= (const _Expr<_Dom, _Tp>&) const; 00081 template<class _Dom> 00082 void operator&= (const _Expr<_Dom, _Tp>&) const; 00083 template<class _Dom> 00084 void operator|= (const _Expr<_Dom, _Tp>&) const; 00085 template<class _Dom> 00086 void operator<<= (const _Expr<_Dom, _Tp>&) const; 00087 template<class _Dom> 00088 void operator>>= (const _Expr<_Dom, _Tp>&) const; 00089 00090 private: 00091 indirect_array (const indirect_array&); 00092 indirect_array (_Array<_Tp>, size_t, _Array<size_t>); 00093 00094 friend class valarray<_Tp>; 00095 friend class gslice_array<_Tp>; 00096 00097 const size_t _M_sz; 00098 const _Array<size_t> _M_index; 00099 const _Array<_Tp> _M_array; 00100 00101 // not implemented 00102 indirect_array (); 00103 }; 00104 00105 template<typename _Tp> 00106 inline indirect_array<_Tp>::indirect_array(const indirect_array<_Tp>& __a) 00107 : _M_sz (__a._M_sz), _M_index (__a._M_index), 00108 _M_array (__a._M_array) {} 00109 00110 template<typename _Tp> 00111 inline 00112 indirect_array<_Tp>::indirect_array (_Array<_Tp> __a, size_t __s, 00113 _Array<size_t> __i) 00114 : _M_sz (__s), _M_index (__i), _M_array (__a) {} 00115 00116 template<typename _Tp> 00117 inline indirect_array<_Tp>& 00118 indirect_array<_Tp>::operator=(const indirect_array<_Tp>& __a) 00119 { 00120 __valarray_copy(__a._M_array, _M_sz, __a._M_index, _M_array, _M_index); 00121 return *this; 00122 } 00123 00124 00125 template<typename _Tp> 00126 inline void 00127 indirect_array<_Tp>::operator= (const _Tp& __t) 00128 { __valarray_fill(_M_array, _M_index, _M_sz, __t); } 00129 00130 template<typename _Tp> 00131 inline void 00132 indirect_array<_Tp>::operator= (const valarray<_Tp>& __v) const 00133 { __valarray_copy (_Array<_Tp> (__v), _M_sz, _M_array, _M_index); } 00134 00135 template<typename _Tp> 00136 template<class _Dom> 00137 inline void 00138 indirect_array<_Tp>::operator= (const _Expr<_Dom,_Tp>& __e) const 00139 { __valarray_copy (__e, _M_sz, _M_array, _M_index); } 00140 00141 #undef _DEFINE_VALARRAY_OPERATOR 00142 #define _DEFINE_VALARRAY_OPERATOR(op, name) \ 00143 template<typename _Tp> \ 00144 inline void \ 00145 indirect_array<_Tp>::operator op##= (const valarray<_Tp>& __v) const \ 00146 { \ 00147 _Array_augmented_##name (_M_array, _M_index, _Array<_Tp> (__v), _M_sz); \ 00148 } \ 00149 \ 00150 template<typename _Tp> template<class _Dom> \ 00151 inline void \ 00152 indirect_array<_Tp>::operator op##= (const _Expr<_Dom,_Tp>& __e) const \ 00153 { \ 00154 _Array_augmented_##name (_M_array, _M_index, __e, _M_sz); \ 00155 } 00156 00157 _DEFINE_VALARRAY_OPERATOR(*, multiplies) 00158 _DEFINE_VALARRAY_OPERATOR(/, divides) 00159 _DEFINE_VALARRAY_OPERATOR(%, modulus) 00160 _DEFINE_VALARRAY_OPERATOR(+, plus) 00161 _DEFINE_VALARRAY_OPERATOR(-, minus) 00162 _DEFINE_VALARRAY_OPERATOR(^, xor) 00163 _DEFINE_VALARRAY_OPERATOR(&, and) 00164 _DEFINE_VALARRAY_OPERATOR(|, or) 00165 _DEFINE_VALARRAY_OPERATOR(<<, shift_left) 00166 _DEFINE_VALARRAY_OPERATOR(>>, shift_right) 00167 00168 #undef _DEFINE_VALARRAY_OPERATOR 00169 00170 } // std:: 00171 00172 #endif /* _CPP_BITS_INDIRECT_ARRAY_H */ 00173 00174 // Local Variables: 00175 // mode:c++ 00176 // End:

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