284 lines
11 KiB
C++
284 lines
11 KiB
C++
// _ _ __ _____
|
|
// | \ | | / _| / ____|_ _
|
|
// | \| | __ _ _ __ ___ ___ ___ | |_ | | _| |_ _| |_
|
|
// | . ` |/ _` | '_ ` _ \ / _ \/ _ \| _| | | |_ _|_ _|
|
|
// | |\ | (_| | | | | | | __/ (_) | | | |____|_| |_|
|
|
// |_| \_|\__,_|_| |_| |_|\___|\___/|_| \_____|
|
|
// https://github.com/Neargye/nameof
|
|
// vesion 0.7.1
|
|
//
|
|
// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
|
|
// SPDX-License-Identifier: MIT
|
|
// Copyright (c) 2016, 2018 - 2019 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>
|
|
#include <type_traits>
|
|
#include <limits>
|
|
#include <string_view>
|
|
|
|
#if !defined(NAMEOF_ENUM_MAX_SEARCH_DEPTH)
|
|
# define NAMEOF_ENUM_MAX_SEARCH_DEPTH 128
|
|
#endif
|
|
|
|
namespace nameof {
|
|
|
|
static_assert(NAMEOF_ENUM_MAX_SEARCH_DEPTH > 0,
|
|
"NAMEOF_ENUM_MAX_SEARCH_DEPTH must be positive and greater than zero.");
|
|
static_assert(NAMEOF_ENUM_MAX_SEARCH_DEPTH % 8 == 0,
|
|
"NAMEOF_ENUM_MAX_SEARCH_DEPTH must be a multiple of 8.");
|
|
static_assert(NAMEOF_ENUM_MAX_SEARCH_DEPTH < std::numeric_limits<int>::max(),
|
|
"NAMEOF_ENUM_MAX_SEARCH_DEPTH must be less INT_MAX.");
|
|
|
|
namespace detail {
|
|
|
|
template <typename T>
|
|
struct identity final {
|
|
using type = T;
|
|
};
|
|
|
|
[[nodiscard]] constexpr bool is_name_char(char c) noexcept {
|
|
return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
|
|
}
|
|
|
|
[[nodiscard]] constexpr bool is_bracket_char(char c) noexcept {
|
|
return c == ')' || c == '}' || c == '>' || c == '(' || c == '{' || c == '<';
|
|
}
|
|
|
|
[[nodiscard]] constexpr std::string_view pretty_name(std::string_view name, bool with_suffix) noexcept {
|
|
for (std::size_t i = name.size(), h = 0, s = 0; i > 0; --i) {
|
|
if (h == 0 && !is_name_char(name[i - 1]) && !is_bracket_char(name[i - 1])) {
|
|
++s;
|
|
continue;
|
|
}
|
|
|
|
if (name[i - 1] == ')' || name[i - 1] == '}') {
|
|
++h;
|
|
++s;
|
|
continue;
|
|
} else if (name[i - 1] == '(' || name[i - 1] == '{') {
|
|
--h;
|
|
++s;
|
|
continue;
|
|
}
|
|
|
|
if (h == 0) {
|
|
name.remove_suffix(s);
|
|
break;
|
|
} else {
|
|
++s;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
std::size_t s = 0;
|
|
for (std::size_t i = name.size(), h = 0; i > 0; --i) {
|
|
if (name[i - 1] == '>') {
|
|
++h;
|
|
++s;
|
|
continue;
|
|
} else if (name[i - 1] == '<') {
|
|
--h;
|
|
++s;
|
|
continue;
|
|
}
|
|
|
|
if (h == 0) {
|
|
break;
|
|
} else {
|
|
++s;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
for (std::size_t i = name.size() - s; i > 0; --i) {
|
|
if (!is_name_char(name[i - 1])) {
|
|
name.remove_prefix(i);
|
|
break;
|
|
}
|
|
}
|
|
name.remove_suffix(with_suffix ? 0 : s);
|
|
|
|
return name;
|
|
}
|
|
|
|
template <typename E>
|
|
[[nodiscard]] constexpr int nameof_enum_impl_() noexcept {
|
|
#if defined(__clang__)
|
|
return sizeof(__PRETTY_FUNCTION__) - sizeof("int nameof::detail::nameof_enum_impl_() [E = ") - sizeof("]") + 1;
|
|
#elif defined(__GNUC__)
|
|
return sizeof(__PRETTY_FUNCTION__) - sizeof("constexpr int nameof::detail::nameof_enum_impl_() [with E = ") - sizeof("]") + 1;
|
|
#elif defined(_MSC_VER)
|
|
return sizeof(__FUNCSIG__) - sizeof("int __cdecl nameof::detail::nameof_enum_impl_<") - sizeof(">(void) noexcept") + 1;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
template <typename E, E V>
|
|
[[nodiscard]] constexpr std::string_view nameof_enum_impl() noexcept {
|
|
#if defined(__clang__)
|
|
constexpr auto str = __PRETTY_FUNCTION__;
|
|
constexpr auto size = sizeof(__PRETTY_FUNCTION__) - 1;
|
|
constexpr auto prefix = sizeof("std::string_view nameof::detail::nameof_enum_impl() [E = ") + nameof_enum_impl_<E>() + sizeof("; V = ") - 2;
|
|
constexpr auto suffix = sizeof("]") - 1;
|
|
return detail::pretty_name({str + prefix, size - prefix - suffix}, false);
|
|
#elif defined(__GNUC__)
|
|
constexpr auto str = __PRETTY_FUNCTION__;
|
|
constexpr auto size = sizeof(__PRETTY_FUNCTION__) - 1;
|
|
constexpr auto prefix = sizeof("constexpr std::string_view nameof::detail::nameof_enum_impl() [with E = ") + nameof_enum_impl_<E>() + sizeof("; V = ");
|
|
constexpr auto suffix = sizeof("; std::string_view = std::basic_string_view<char>]") - 1;
|
|
return {str + prefix, size - prefix - suffix};
|
|
#elif defined(_MSC_VER)
|
|
constexpr auto str = __FUNCSIG__;
|
|
constexpr auto size = sizeof(__FUNCSIG__) - 1;
|
|
constexpr auto prefix = sizeof("class std::basic_string_view<char,struct std::char_traits<char> > __cdecl nameof::detail::nameof_enum_impl<") + nameof_enum_impl_<E>();
|
|
constexpr auto suffix = sizeof(">(void) noexcept") - 1;
|
|
return detail::pretty_name({str + prefix, size - prefix - suffix}, false);
|
|
#else
|
|
return {"nameof_enum::unsupported_compiler"};
|
|
#endif
|
|
}
|
|
|
|
template <typename E, int V>
|
|
struct nameof_enum_t final {
|
|
[[nodiscard]] constexpr std::string_view operator()(int value) const noexcept {
|
|
if constexpr (V > std::numeric_limits<std::underlying_type_t<E>>::max()) {
|
|
return {"nameof_enum::out_of_range"};
|
|
}
|
|
|
|
switch (value - V) {
|
|
case 0:
|
|
return nameof_enum_impl<E, static_cast<E>(V)>();
|
|
case 1:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 1)>();
|
|
case 2:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 2)>();
|
|
case 3:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 3)>();
|
|
case 4:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 4)>();
|
|
case 5:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 5)>();
|
|
case 6:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 6)>();
|
|
case 7:
|
|
return nameof_enum_impl<E, static_cast<E>(V + 7)>();
|
|
default:
|
|
return nameof_enum_t<E, V + 8>{}(value);
|
|
}
|
|
}
|
|
};
|
|
|
|
template <typename E>
|
|
struct nameof_enum_t<E, NAMEOF_ENUM_MAX_SEARCH_DEPTH> final {
|
|
[[nodiscard]] constexpr std::string_view operator()(int) const noexcept {
|
|
return {"nameof_enum::out_of_range"};
|
|
}
|
|
};
|
|
|
|
[[nodiscard]] constexpr std::string_view nameof_type_impl_(std::string_view name) noexcept {
|
|
#if defined(_MSC_VER)
|
|
if (name.size() > sizeof("enum") && name[0] == 'e' && name[1] == 'n' && name[2] == 'u' && name[3] == 'm' && name[4] == ' ') {
|
|
name.remove_prefix(sizeof("enum"));
|
|
}
|
|
if (name.size() > sizeof("class") && name[0] == 'c' && name[1] == 'l' && name[2] == 'a' && name[3] == 's' && name[4] == 's' && name[5] == ' ') {
|
|
name.remove_prefix(sizeof("class"));
|
|
}
|
|
if (name.size() > sizeof("struct") && name[0] == 's' && name[1] == 't' && name[2] == 'r' && name[3] == 'u' && name[4] == 'c' && name[5] == 't' && name[6] == ' ') {
|
|
name.remove_prefix(sizeof("struct"));
|
|
}
|
|
#endif
|
|
while (name.back() == ' ') {
|
|
name.remove_suffix(1);
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
template <typename T>
|
|
[[nodiscard]] constexpr std::string_view nameof_type_impl() noexcept {
|
|
#if defined(__clang__)
|
|
constexpr auto str = __PRETTY_FUNCTION__;
|
|
constexpr auto size = sizeof(__PRETTY_FUNCTION__) - 1;
|
|
constexpr auto prefix = sizeof("std::string_view nameof::detail::nameof_type_impl() [T = nameof::detail::identity<") - 1;
|
|
constexpr auto suffix = sizeof(">]") - 1;
|
|
return nameof_type_impl_({str + prefix, size - prefix - suffix});
|
|
#elif defined(__GNUC__)
|
|
constexpr auto str = __PRETTY_FUNCTION__;
|
|
constexpr auto size = sizeof(__PRETTY_FUNCTION__) - 1;
|
|
constexpr auto prefix = sizeof("constexpr std::string_view nameof::detail::nameof_type_impl() [with T = nameof::detail::identity<") - 1;
|
|
constexpr auto suffix = sizeof(">; std::string_view = std::basic_string_view<char>]") - 1;
|
|
return nameof_type_impl_({str + prefix, size - prefix - suffix});
|
|
#elif defined(_MSC_VER)
|
|
constexpr auto str = __FUNCSIG__;
|
|
constexpr auto size = sizeof(__FUNCSIG__) - 1;
|
|
constexpr auto prefix = sizeof("class std::basic_string_view<char,struct std::char_traits<char> > __cdecl nameof::detail::nameof_type_impl<struct nameof::detail::identity<") - 1;
|
|
constexpr auto suffix = sizeof(">>(void) noexcept") - 1;
|
|
return nameof_type_impl_({str + prefix, size - prefix - suffix});
|
|
#else
|
|
return {"nameof_type::unsupported_compiler"};
|
|
#endif
|
|
}
|
|
|
|
template <typename T, typename = std::enable_if_t<!std::is_reference_v<T>>>
|
|
[[nodiscard]] constexpr std::string_view nameof_impl(std::string_view name, bool with_suffix) noexcept {
|
|
return detail::pretty_name(name, with_suffix);
|
|
}
|
|
|
|
[[nodiscard]] constexpr std::string_view nameof_raw_impl(std::string_view name) noexcept {
|
|
return name;
|
|
}
|
|
|
|
} // namespace detail
|
|
|
|
template <typename T, typename = std::enable_if_t<std::is_enum_v<std::decay_t<T>>>>
|
|
[[nodiscard]] constexpr std::string_view nameof_enum(T value) noexcept {
|
|
constexpr bool s = std::is_signed_v<std::underlying_type_t<std::decay_t<T>>>;
|
|
constexpr int min = s ? -MAGIC_ENUM_MAX_SEARCH_DEPTH : 0;
|
|
return detail::nameof_enum_t<std::decay_t<T>, min>{}(static_cast<int>(value));
|
|
}
|
|
|
|
template <typename T>
|
|
[[nodiscard]] constexpr std::string_view nameof_type() noexcept {
|
|
return detail::nameof_type_impl<detail::identity<T>>();
|
|
}
|
|
|
|
} // namespace nameof
|
|
|
|
// NAMEOF used to obtain the simple (unqualified) string name of variable, function, enum, macro.
|
|
#define NAMEOF(...) ::nameof::detail::nameof_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__, false)
|
|
|
|
// NAMEOF_FULL used to obtain the full string name of variable, function, enum, macro.
|
|
#define NAMEOF_FULL(...) ::nameof::detail::nameof_impl<decltype(__VA_ARGS__)>(#__VA_ARGS__, true)
|
|
|
|
// NAMEOF_ENUM used to obtain the simple (unqualified) string name of enum variable.
|
|
#define NAMEOF_ENUM(...) ::nameof::nameof_enum<decltype(__VA_ARGS__)>(__VA_ARGS__)
|
|
|
|
// NAMEOF_TYPE used to obtain the string name of variable type.
|
|
#define NAMEOF_TYPE(...) ::nameof::nameof_type<decltype(__VA_ARGS__)>()
|
|
|
|
// NAMEOF_TYPE_T used to obtain the string name of type.
|
|
#define NAMEOF_TYPE_T(...) ::nameof::nameof_type<__VA_ARGS__>()
|
|
|
|
// NAMEOF_RAW used to obtain the raw string name of variable, function, enum, macro.
|
|
#define NAMEOF_RAW(...) ::nameof::detail::nameof_raw_impl(#__VA_ARGS__)
|