mirror of
https://github.com/triqs/dft_tools
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117 lines
6.0 KiB
C++
117 lines
6.0 KiB
C++
/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2012 by M. Ferrero, O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#ifndef TRIQS_GF_DATA_PROXIES_H
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#define TRIQS_GF_DATA_PROXIES_H
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#include <triqs/utility/first_include.hpp>
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#include <utility>
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#include <triqs/arrays.hpp>
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#include <triqs/arrays/matrix_view_proxy.hpp>
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namespace triqs { namespace gfs {
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template<typename T, int R> struct data_proxy_array;
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//---------------------------- 3d array ----------------------------------
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template<typename T> struct data_proxy_array<T,3> {
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/// The storage
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typedef arrays::array<T,3> storage_t;
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typedef typename storage_t::view_type storage_view_t;
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/// The data access
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arrays::matrix_view_proxy<storage_t,0> operator()(storage_t & data, size_t i) const { return arrays::matrix_view_proxy<storage_t,0>(data,i); }
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arrays::const_matrix_view_proxy<storage_t,0> operator()(storage_t const & data, size_t i) const { return arrays::const_matrix_view_proxy<storage_t,0>(data,i); }
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arrays::matrix_view_proxy<storage_view_t,0> operator()(storage_view_t & data, size_t i) const { return arrays::matrix_view_proxy<storage_view_t,0>(data,i); }
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arrays::const_matrix_view_proxy<storage_view_t,0> operator()(storage_view_t const & data, size_t i) const { return arrays::const_matrix_view_proxy<storage_view_t,0>(data,i); }
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template<typename S, typename RHS> static void assign_no_resize (S & data, RHS && rhs) { data() = std::forward<RHS>(rhs);}
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template<typename S, typename RHS> static void assign_to_scalar (S & data, RHS && rhs) { data() = std::forward<RHS>(rhs);}
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template<typename RHS> static void assign_with_resize (storage_t & data, RHS && rhs) { data = std::forward<RHS>(rhs);}
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template<typename RHS> static void rebind (storage_view_t & data, RHS && rhs) { data.rebind(rhs.data()); }
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};
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//---------------------------- 1d array ----------------------------------
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template<typename T> struct data_proxy_array<T,1>{
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/// The storage
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typedef arrays::array<T,1> storage_t;
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typedef typename storage_t::view_type storage_view_t;
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/// The data access
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auto operator()(storage_t & data,size_t i) const -> decltype(data(i)) { return data(i);}
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auto operator()(storage_t const & data,size_t i) const -> decltype(data(i)) { return data(i);}
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auto operator()(storage_view_t & data,size_t i) const -> decltype(data(i)) { return data(i);}
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auto operator()(storage_view_t const & data,size_t i) const -> decltype(data(i)) { return data(i);}
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template<typename S, typename RHS> static void assign_no_resize (S & data, RHS && rhs) { data() = std::forward<RHS>(rhs);}
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template<typename S, typename RHS> static void assign_to_scalar (S & data, RHS && rhs) { data() = std::forward<RHS>(rhs);}
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template<typename RHS> static void assign_with_resize (storage_t & data, RHS && rhs) { data = std::forward<RHS>(rhs);}
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template<typename RHS> static void rebind (storage_view_t & data, RHS && rhs) { data.rebind(rhs.data()); }
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};
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//---------------------------- vector ----------------------------------
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template<typename T> struct data_proxy_vector {
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typedef typename T::view_type Tv;
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/// The storage
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typedef std::vector<T> storage_t;
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typedef std::vector<Tv> storage_view_t;
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/// The data access
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T & operator()(storage_t & data, size_t i) { return data[i];}
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T const & operator()(storage_t const & data, size_t i) const { return data[i];}
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Tv & operator()(storage_view_t & data, size_t i) { return data[i];}
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Tv const & operator()(storage_view_t const & data, size_t i) const { return data[i];}
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template<typename S, typename RHS> static void assign_no_resize (S & data, RHS && rhs) {
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//auto r = make_vector(rhs);
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if (data.size() !=rhs.size()) TRIQS_RUNTIME_ERROR << "Size mismatch in gf assignment";
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for (size_t i =0; i<data.size(); ++i) data[i] = rhs[i];
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}
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template<typename S, typename RHS> static void assign_with_resize (S & data, RHS && rhs) {data = utility::factory<storage_t>(rhs);}
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template<typename S, typename RHS> static void assign_to_scalar (S & data, RHS && rhs) {for (size_t i =0; i<data.size(); ++i) data[i] = rhs;}
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template<typename RHS> static void rebind (storage_view_t & data, RHS && rhs) { data.clear(); for (auto & x : rhs.data()) data.push_back(x);}
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};
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//---------------------------- lambda ----------------------------------
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template<typename F> struct data_proxy_lambda {
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/// The storage
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typedef F storage_t;
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typedef F storage_view_t;
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/// The data access
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auto operator()(storage_t & data, size_t i) DECL_AND_RETURN( data(i));
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auto operator()(storage_t const & data, size_t i) const DECL_AND_RETURN( data(i));
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template<typename S, typename RHS> static void assign_no_resize (S & data, RHS && rhs) { data() = std::forward<RHS>(rhs);}
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template<typename S, typename RHS> static void assign_with_resize (S & data, RHS && rhs) = delete;
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template<typename S, typename RHS> static void assign_to_scalar (S & data, RHS && rhs) = delete;
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template<typename RHS> static void rebind (storage_view_t & data, RHS && rhs) = delete;// { data = std::forward<RHS>(rhs);}
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};
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}}
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#endif
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