# 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: