nameof_module/include/nameof.hpp
2018-05-12 01:33:42 +05:00

64 lines
3 KiB
C++

// _ _ __ _____
// | \ | | / _| / ____|_ _
// | \| | __ _ _ __ ___ ___ ___ | |_ | | _| |_ _| |_
// | . ` |/ _` | '_ ` _ \ / _ \/ _ \| _| | | |_ _|_ _|
// | |\ | (_| | | | | | | __/ (_) | | | |____|_| |_|
// |_| \_|\__,_|_| |_| |_|\___|\___/|_| \_____|
// https://github.com/Neargye/nameof
// vesion 0.2.4
//
// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
// Copyright (c) 2016, 2018 Daniil Goncharov <neargye@gmail.com>.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma once
#include <cstddef>
namespace nameof {
namespace detail {
inline constexpr bool IsLexeme(const char s) noexcept {
return (s == '.' || s == '>' || s == ':' || s == '&' || s == '*' ||
s == '+' || s == '~' || s == '-' || s == '!');
}
} // namespace detail
inline constexpr const char* Nameof(const char* name, const ::std::size_t length) noexcept {
return length == 0 ? name : detail::IsLexeme(name[length - 1])
? &name[length]
: Nameof(name, length - 1);
}
} // namespace nameof
#if defined(__GNUC__) || defined(__clang__)
// Used to obtain the string name of a variable, type, member, function, macros.
# define NAMEOF(name) ::nameof::Nameof(#name, sizeof(#name) / sizeof(char) - 1 + (0 * sizeof(void(*)(__typeof__(name)))))
// Used to obtain the string full name of a variable, type, member, function, macros.
# define NAMEOF_FULL(name) ::nameof::Nameof(#name, (0 * sizeof(void(*)(__typeof__(name)))))
#elif defined(_MSC_VER)
// Used to obtain the string name of a variable, type, member, function, macros.
# define NAMEOF(name) ::nameof::Nameof(#name, sizeof(#name) / sizeof(char) - 1 + (0 * sizeof(typeid(name))))
// Used to obtain the string full name of a variable, type, member, function, macros.
# define NAMEOF_FULL(name) ::nameof::Nameof(#name, (0 * sizeof(typeid(name))))
#endif