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