77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2018 Danny Robson <danny@nerdcruft.net>
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*/
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#pragma once
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#include "../std.hpp"
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#include <cstddef>
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#include <type_traits>
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namespace util::types {
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//-------------------------------------------------------------------------
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enum class category {
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NONE,
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UNSIGNED,
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SIGNED,
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REAL,
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};
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//-------------------------------------------------------------------------
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struct description {
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enum category category;
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std::size_t width;
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};
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//-------------------------------------------------------------------------
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template <typename T>
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struct category_traits;
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template <> struct category_traits<u08> : public std::integral_constant<category,category::UNSIGNED> {};
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template <> struct category_traits<u16> : public std::integral_constant<category,category::UNSIGNED> {};
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template <> struct category_traits<u32> : public std::integral_constant<category,category::UNSIGNED> {};
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template <> struct category_traits<u64> : public std::integral_constant<category,category::UNSIGNED> {};
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template <> struct category_traits<i08> : public std::integral_constant<category,category::SIGNED> {};
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template <> struct category_traits<i16> : public std::integral_constant<category,category::SIGNED> {};
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template <> struct category_traits<i32> : public std::integral_constant<category,category::SIGNED> {};
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template <> struct category_traits<i64> : public std::integral_constant<category,category::SIGNED> {};
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template <> struct category_traits<f32> : public std::integral_constant<category,category::REAL> {};
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template <> struct category_traits<f64> : public std::integral_constant<category,category::REAL> {};
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template <typename T>
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constexpr auto category_traits_v = category_traits<T>::value;
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//-------------------------------------------------------------------------
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template <typename T>
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constexpr description
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make_description (void) noexcept
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{
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return {
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.category = category_traits_v<T>,
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.width = sizeof (T)
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};
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}
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}
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#include <iosfwd>
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namespace util::types {
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std::ostream& operator<< (std::ostream&, category);
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std::ostream& operator<< (std::ostream&, description);
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} |