72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/**
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This file is a part of rexy's general purpose library
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Copyright (C) 2022 rexy712
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef REXY_DETAIL_FORMAT_STORAGE_HPP
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#define REXY_DETAIL_FORMAT_STORAGE_HPP
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#include <type_traits> //declval
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namespace rexy::fmt::detail{
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//tag for use in basic_format_arg(s)
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enum class storage_type{
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none_t = 0,
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bool_t,
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char_t,
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int_t,
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uint_t,
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long_long_t,
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ulong_long_t,
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float_t,
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double_t,
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long_double_t,
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char_ptr_t,
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string_t,
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ptr_t,
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custom_t
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};
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constexpr bool is_integral_storage_type(storage_type t){
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return t >= storage_type::bool_t && t <= storage_type::long_double_t;
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}
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constexpr bool is_integer_storage_type(storage_type t){
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return t >= storage_type::bool_t && t <= storage_type::ulong_long_t;
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}
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constexpr bool is_floating_storage_type(storage_type t){
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return t >= storage_type::float_t && t <= storage_type::long_double_t;
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}
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constexpr bool is_string_storage_type(storage_type t){
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return t == storage_type::string_t || t == storage_type::char_ptr_t;
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}
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//Mappings from actual type to the type used in basic_format_arg(s)
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template<class T, class Char>
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consteval storage_type map_to_storage_enum(void);
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template<class T, class Char>
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static constexpr storage_type map_to_storage_enum_v = map_to_storage_enum<T,Char>();
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template<class Context>
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struct map_to_stored_type_helper;
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template<class T, class Context>
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using stored_type_t = decltype(std::declval<map_to_stored_type_helper<Context>>()(std::declval<T>()));
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}
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#endif
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