mirror of
https://github.com/triqs/dft_tools
synced 2024-10-31 19:23:45 +01:00
79 lines
4.0 KiB
C++
79 lines
4.0 KiB
C++
/*******************************************************************************
|
|
*
|
|
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
|
|
*
|
|
* Copyright (C) 2011-2013 by M. Ferrero, O. Parcollet
|
|
*
|
|
* TRIQS is free software: you can redistribute it and/or modify it under the
|
|
* terms of the GNU General Public License as published by the Free Software
|
|
* Foundation, either version 3 of the License, or (at your option) any later
|
|
* version.
|
|
*
|
|
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
******************************************************************************/
|
|
#ifndef TRIQS_TOOLS_H5_MAKE_READ_WRITE_H
|
|
#define TRIQS_TOOLS_H5_MAKE_READ_WRITE_H
|
|
#include <triqs/utility/first_include.hpp>
|
|
#include <triqs/h5.hpp>
|
|
#include <triqs/utility/serialization.hpp>
|
|
#include <string>
|
|
|
|
namespace triqs { namespace h5 {
|
|
|
|
template<typename T, typename Enable=void> struct has_h5_read : std::false_type {};
|
|
template<typename T> struct has_h5_read<T, decltype(h5_read(std::declval<h5::group>(), std::string(), (T&)(std::declval<T>())))> : std::true_type {};
|
|
|
|
template<typename T, typename Enable=void> struct has_h5_write : std::false_type {};
|
|
template<typename T> struct has_h5_write<T, decltype(h5_write(std::declval<h5::group>(), std::string(), std::declval<const T>()))> : std::true_type {};
|
|
|
|
typedef std::function<void(h5::group, std::string const &)> h5_rw_lambda_t;
|
|
|
|
namespace details {
|
|
// given a pointer to an object, synthesize h5_read/write function for this object
|
|
template<typename T> h5_rw_lambda_t make_h5_write_impl(T * p, std::integral_constant<int,0>) {
|
|
return [p](h5::group F, std::string const &Name) {h5_write(F,Name, *p);};
|
|
}
|
|
template<typename T> h5_rw_lambda_t make_h5_read_impl(T * p, std::integral_constant<int,0>) {
|
|
return [p](h5::group F, std::string const &Name) {h5_read(F,Name, *p);};
|
|
}
|
|
|
|
// use boost serialization as a generic case
|
|
template<typename T> h5_rw_lambda_t make_h5_read_impl(T * p, std::integral_constant<int,1>) {
|
|
return [p](h5::group F, std::string const &Name) { std::string s; h5_read(F,Name, s); *p = triqs::deserialize<T>(s); };
|
|
}
|
|
template<typename T> h5_rw_lambda_t make_h5_write_impl(const T * p, std::integral_constant<int,1>) {
|
|
return
|
|
[p](h5::group F, std::string const &Name) {h5_write(F,Name, triqs::serialize(*p));
|
|
F.write_string_attribute(Name,"TRIQS_HDF5_data_scheme",get_triqs_hdf5_data_scheme(*p));
|
|
};
|
|
}
|
|
|
|
// do_nothing
|
|
template<typename T> h5_rw_lambda_t make_h5_read_impl (T * p, std::integral_constant<int,2>) { return h5_rw_lambda_t();}
|
|
template<typename T> h5_rw_lambda_t make_h5_write_impl(T * p, std::integral_constant<int,2>) { return h5_rw_lambda_t();}
|
|
|
|
}//details
|
|
|
|
// Generate a lambda (h5::group, Name) -> void
|
|
// that calls h5_read/write if it exists, and reverts to boost serialization into a string otherwise
|
|
template<typename T> h5_rw_lambda_t make_h5_write(T * p) { return details::make_h5_write_impl(p,std::integral_constant<int,has_h5_write<T>::value?0:1>());}
|
|
template<typename T> h5_rw_lambda_t make_h5_read (T * p) { return details::make_h5_read_impl (p,std::integral_constant<int,has_h5_read <T>::value?0:1>());}
|
|
|
|
// Generate a lambda (h5::group, Name) -> void
|
|
// that calls h5_read/write if it exists, and does nothing otherwise
|
|
template<typename T> h5_rw_lambda_t make_h5_write_or_nothing(T * p) { return details::make_h5_write_impl(p,std::integral_constant<int,has_h5_write<T>::value?0:2>());}
|
|
template<typename T> h5_rw_lambda_t make_h5_read_or_nothing (T * p) { return details::make_h5_read_impl (p,std::integral_constant<int,has_h5_read <T>::value?0:2>());}
|
|
|
|
}}// end namespace
|
|
#endif
|
|
|
|
|
|
|