| // <source_location> -*- C++ -*- |
| |
| // Copyright (C) 2020-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file include/source_location |
| * This is a Standard C++ Library header. |
| */ |
| |
| #ifndef _GLIBCXX_SRCLOC |
| #define _GLIBCXX_SRCLOC 1 |
| |
| #if __cplusplus > 201703L && __has_builtin(__builtin_source_location) |
| #include <bits/c++config.h> |
| |
| namespace std |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| #define __cpp_lib_source_location 201907L |
| |
| /// A class that describes a location in source code. |
| struct source_location |
| { |
| private: |
| using uint_least32_t = __UINT_LEAST32_TYPE__; |
| |
| public: |
| |
| // [support.srcloc.cons], creation |
| static consteval source_location |
| current(const void* __p = __builtin_source_location()) noexcept |
| { |
| source_location __ret; |
| __ret._M_impl = static_cast <const __impl*>(__p); |
| return __ret; |
| } |
| |
| constexpr source_location() noexcept { } |
| |
| // [support.srcloc.obs], observers |
| constexpr uint_least32_t |
| line() const noexcept |
| { return _M_impl ? _M_impl->_M_line : 0u; } |
| |
| constexpr uint_least32_t |
| column() const noexcept |
| { return _M_impl ? _M_impl->_M_column : 0u; } |
| |
| constexpr const char* |
| file_name() const noexcept |
| { return _M_impl ? _M_impl->_M_file_name : ""; } |
| |
| constexpr const char* |
| function_name() const noexcept |
| { return _M_impl ? _M_impl->_M_function_name : ""; } |
| |
| private: |
| struct __impl |
| { |
| const char* _M_file_name; |
| const char* _M_function_name; |
| unsigned _M_line; |
| unsigned _M_column; |
| }; |
| |
| const __impl* _M_impl = nullptr; |
| }; |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace std |
| #endif // C++20 && __builtin_source_location |
| #endif // _GLIBCXX_SRCLOC |