# 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, 2002
    00004 //  Free Software Foundation, Inc.
    00005 //
    00006 // This file is part of the GNU ISO C++ Library.  This library is free
    00007 // software; you can redistribute it and/or modify it under the
    00008 // terms of the GNU General Public License as published by the
    00009 // Free Software Foundation; either version 2, or (at your option)
    00010 // any later version.
    00011
    00012 // This library is distributed in the hope that it will be useful,
    00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00015 // GNU General Public License for more details.
    00016
    00017 // You should have received a copy of the GNU General Public License along
    00018 // with this library; see the file COPYING.  If not, write to the Free
    00019 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
    00020 // USA.
    00021
    00022 // As a special exception, you may use this file as part of a free software
    00023 // library without restriction.  Specifically, if other files instantiate
    00024 // templates or use macros or inline functions from this file, or you compile
    00025 // this file and link it with other files to produce an executable, this
    00026 // file does not by itself cause the resulting executable to be covered by
    00027 // the GNU General Public License.  This exception does not however
    00028 // invalidate any other reasons why the executable file might be covered by
    00029 // the GNU General Public License.
    00030
    00031 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
    00032
    00038 #ifndef _CPP_BITS_INDIRECT_ARRAY_H
    00039 #define _CPP_BITS_INDIRECT_ARRAY_H 1
    00040
    00041 #pragma GCC system_header
    00042
    00043 namespace std
    00044 {
    00045   template <class _Tp>
    00046      class indirect_array
    00047      {
    00048      public:
    00049        typedef _Tp value_type;
    00050
    00051        // XXX: This is a proposed resolution for DR-253.
    00052        indirect_array& operator=(const indirect_array&);
    00053
    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 valarray<_Tp>&) const;
    00065        void operator= (const _Tp&) const;
    00066        //    ~indirect_array();
    00067
    00068        template<class _Dom>
    00069          void operator=(const _Expr<_Dom, _Tp>&) const;
    00070        template<class _Dom>
    00071          void operator*=(const _Expr<_Dom, _Tp>&) const;
    00072        template<class _Dom>
    00073          void operator/=(const _Expr<_Dom, _Tp>&) const;
    00074        template<class _Dom>
    00075          void operator%=(const _Expr<_Dom, _Tp>&) const;
    00076        template<class _Dom>
    00077          void operator+=(const _Expr<_Dom, _Tp>&) const;
    00078        template<class _Dom>
    00079          void operator-=(const _Expr<_Dom, _Tp>&) const;
    00080        template<class _Dom>
    00081          void operator^=(const _Expr<_Dom, _Tp>&) const;
    00082        template<class _Dom>
    00083          void operator&=(const _Expr<_Dom, _Tp>&) const;
    00084        template<class _Dom>
    00085          void operator|=(const _Expr<_Dom, _Tp>&) const;
    00086        template<class _Dom>
    00087          void operator<<=(const _Expr<_Dom, _Tp>&) const;
    00088        template<class _Dom>
    00089          void operator>>=(const _Expr<_Dom, _Tp>&) const;
    00090
    00091      private:
    00092        indirect_array(const indirect_array&);
    00093        indirect_array(_Array<_Tp>, size_t, _Array<size_t>);
    00094
    00095        friend class valarray<_Tp>;
    00096        friend class gslice_array<_Tp>;
    00097
    00098        const size_t      _M_sz;
    00099        const _Array<size_t> _M_index;
    00100        const _Array<_Tp>     _M_array;
    00101
    00102        // not implemented
    00103        indirect_array();
    00104      };
    00105
    00106   template<typename _Tp>
    00107     inline
    00108     indirect_array<_Tp>::indirect_array(const indirect_array<_Tp>& __a)
    00109       : _M_sz(__a._M_sz), _M_index(__a._M_index), _M_array(__a._M_array) {}
    00110
    00111   template<typename _Tp>
    00112      inline
    00113      indirect_array<_Tp>::indirect_array(_Array<_Tp> __a, size_t __s,
    00114                      _Array<size_t> __i)
    00115        : _M_sz(__s), _M_index(__i), _M_array(__a) {}
    00116
    00117   template<typename _Tp>
    00118      inline indirect_array<_Tp>&
    00119      indirect_array<_Tp>::operator=(const indirect_array<_Tp>& __a)
    00120      {
    00121        __valarray_copy(__a._M_array, _M_sz, __a._M_index, _M_array, _M_index);
    00122        return *this;
    00123      }
    00124
    00125
    00126   template<typename _Tp>
    00127      inline void
    00128      indirect_array<_Tp>::operator=(const _Tp& __t) const
    00129      { __valarray_fill(_M_array, _M_index, _M_sz, __t); }
    00130
    00131   template<typename _Tp>
    00132      inline void
    00133      indirect_array<_Tp>::operator=(const valarray<_Tp>& __v) const
    00134      { __valarray_copy(_Array<_Tp>(__v), _M_sz, _M_array, _M_index); }
    00135
    00136   template<typename _Tp>
    00137      template<class _Dom>
    00138        inline void
    00139        indirect_array<_Tp>::operator=(const _Expr<_Dom,_Tp>& __e) const
    00140        { __valarray_copy(__e, _M_sz, _M_array, _M_index); }
    00141
    00142 #undef _DEFINE_VALARRAY_OPERATOR
    00143 #define _DEFINE_VALARRAY_OPERATOR(_Op, _Name)               \
    00144   template<typename _Tp>                        \
    00145     inline void                             \
    00146     indirect_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const\
    00147     {                                   \
    00148       _Array_augmented_##_Name(_M_array, _M_index, _Array<_Tp>(__v), _M_sz); \
    00149     }                                   \
    00150                                     \
    00151   template<typename _Tp>                                                \
    00152     template<class _Dom>                                \
    00153       inline void                           \
    00154       indirect_array<_Tp>::operator _Op##=(const _Expr<_Dom,_Tp>& __e) const\
    00155       {                                 \
    00156     _Array_augmented_##_Name(_M_array, _M_index, __e, _M_sz);   \
    00157       }
    00158
    00159 _DEFINE_VALARRAY_OPERATOR(*, __multiplies)
    00160 _DEFINE_VALARRAY_OPERATOR(/, __divides)
    00161 _DEFINE_VALARRAY_OPERATOR(%, __modulus)
    00162 _DEFINE_VALARRAY_OPERATOR(+, __plus)
    00163 _DEFINE_VALARRAY_OPERATOR(-, __minus)
    00164 _DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor)
    00165 _DEFINE_VALARRAY_OPERATOR(&, __bitwise_and)
    00166 _DEFINE_VALARRAY_OPERATOR(|, __bitwise_or)
    00167 _DEFINE_VALARRAY_OPERATOR(<<, __shift_left)
    00168 _DEFINE_VALARRAY_OPERATOR(>>, __shift_right)
    00169
    00170 #undef _DEFINE_VALARRAY_OPERATOR
    00171
    00172 } // std::
    00173
    00174 #endif /* _CPP_BITS_INDIRECT_ARRAY_H */
    00175
    00176 // Local Variables:
    00177 // mode:c++
    00178 // End: