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types/description: add trivial type categorisation enums

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This commit is contained in:
Danny Robson 2018-06-03 15:25:50 +10:00
parent 18e2b615d5
commit 33222d3ef4
3 changed files with 121 additions and 0 deletions
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2
CMakeLists.txt
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@ -399,6 +399,8 @@ list (
typeidx.hpp
types/bits.hpp
types/comparator.hpp
types/description.cpp
types/description.hpp
types.hpp
types/string.cpp
types/string.hpp

42
types/description.cpp Normal file
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@ -0,0 +1,42 @@
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2018 Danny Robson <danny@nerdcruft.net>
*/
#include "description.hpp"
#include "../debug.hpp"
///////////////////////////////////////////////////////////////////////////////
std::ostream&
util::types::operator<< (std::ostream &os, util::types::category val)
{
switch (val) {
case category::NONE: return os << "NONE";
case category::UNSIGNED: return os << "UNSIGNED";
case category::SIGNED: return os << "SIGNED";
case category::REAL: return os << "REAL";
}
unreachable ();
}
///////////////////////////////////////////////////////////////////////////////
std::ostream&
util::types::operator<< (std::ostream &os, util::types::description val)
{
return os << "{ category: " << val.category << ", width: " << val.width << " }";
}

77
types/description.hpp Normal file
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@ -0,0 +1,77 @@
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2018 Danny Robson <danny@nerdcruft.net>
*/
#pragma once
#include "../std.hpp"
#include <cstddef>
#include <type_traits>
namespace util::types {
//-------------------------------------------------------------------------
enum class category {
NONE,
UNSIGNED,
SIGNED,
REAL,
};
//-------------------------------------------------------------------------
struct description {
enum category category;
std::size_t width;
};
//-------------------------------------------------------------------------
template <typename T>
struct category_traits;
template <> struct category_traits<u08> : public std::integral_constant<category,category::UNSIGNED> {};
template <> struct category_traits<u16> : public std::integral_constant<category,category::UNSIGNED> {};
template <> struct category_traits<u32> : public std::integral_constant<category,category::UNSIGNED> {};
template <> struct category_traits<u64> : public std::integral_constant<category,category::UNSIGNED> {};
template <> struct category_traits<i08> : public std::integral_constant<category,category::SIGNED> {};
template <> struct category_traits<i16> : public std::integral_constant<category,category::SIGNED> {};
template <> struct category_traits<i32> : public std::integral_constant<category,category::SIGNED> {};
template <> struct category_traits<i64> : public std::integral_constant<category,category::SIGNED> {};
template <> struct category_traits<f32> : public std::integral_constant<category,category::REAL> {};
template <> struct category_traits<f64> : public std::integral_constant<category,category::REAL> {};
template <typename T>
constexpr auto category_traits_v = category_traits<T>::value;
//-------------------------------------------------------------------------
template <typename T>
constexpr description
make_description (void) noexcept
{
return {
.category = category_traits_v<T>,
.width = sizeof (T)
};
}
}
#include <iosfwd>
namespace util::types {
std::ostream& operator<< (std::ostream&, category);
std::ostream& operator<< (std::ostream&, description);
}