95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
/**
|
|
rjp++
|
|
Copyright (C) 2020 rexy712
|
|
|
|
This program 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.
|
|
|
|
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef RJP_UTIL_HPP
|
|
#define RJP_UTIL_HPP
|
|
|
|
#include <rjp.h>
|
|
#include "integral.hpp"
|
|
|
|
namespace rjp{
|
|
namespace detail{
|
|
template<class To, class From, bool = std::is_same<std::remove_reference_t<To>,std::remove_reference_t<From>>::value>
|
|
struct convert_helper;
|
|
template<class To, class From>
|
|
struct convert_helper<To,From,false>{
|
|
static To perform(From&& t){
|
|
return To(std::move(t));
|
|
}
|
|
};
|
|
template<class To, class From>
|
|
struct convert_helper<To,From&,false>{
|
|
static To perform(const From& t){
|
|
return To(const_cast<RJP_value*>(t.raw()), false);
|
|
}
|
|
};
|
|
template<class To, class From>
|
|
struct convert_helper<To,From,true>{
|
|
static decltype(auto) perform(From&& t){
|
|
return std::forward<From>(t);
|
|
}
|
|
};
|
|
}
|
|
|
|
template<class To, class From>
|
|
To convert(From&& from){
|
|
return detail::convert_helper<To,From>::perform(std::forward<From>(from));
|
|
}
|
|
|
|
namespace detail{
|
|
template<class To, class From>
|
|
struct get_ref{
|
|
using type = std::remove_reference_t<To>;
|
|
};
|
|
template<class To, class From>
|
|
struct get_ref<To, From&>{
|
|
using type = std::remove_reference_t<To>&;
|
|
};
|
|
template<class To, class From>
|
|
struct get_ref<To, From&&>{
|
|
using type = std::remove_reference_t<To>&&;
|
|
};
|
|
template<class To, class From>
|
|
struct get_ref<To&&, From&>{
|
|
using type = To&&;
|
|
};
|
|
template<class To, class From>
|
|
struct get_ref<To&&, From&&>{
|
|
using type = To&&;
|
|
};
|
|
}
|
|
|
|
template<class To, class From>
|
|
decltype(auto) cast(From&& from){
|
|
return static_cast<typename detail::get_ref<To,From&&>::type>(std::forward<From>(from));
|
|
}
|
|
|
|
namespace detail{
|
|
template<class Val>
|
|
void set_to_underlying(RJP_value* val, typename Val::underlying_type);
|
|
template<>
|
|
void set_to_underlying<rjp::integer>(RJP_value* val, RJP_int i);
|
|
template<>
|
|
void set_to_underlying<rjp::dfloat>(RJP_value* val, RJP_float f);
|
|
template<>
|
|
void set_to_underlying<rjp::boolean>(RJP_value* val, RJP_bool b);
|
|
}
|
|
}
|
|
|
|
#endif
|