1// <source_location> -*- C++ -*-
3// Copyright (C) 2020-2024 Free Software Foundation, Inc.
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
25/** @file include/source_location
26 * This is a Standard C++ Library header.
29#ifndef _GLIBCXX_SRCLOC
30#define _GLIBCXX_SRCLOC 1
32#define __glibcxx_want_source_location
33#include <bits/version.h>
35#if __cpp_lib_source_location // C++ >= 20 && builtin_source_location
36#include <bits/c++config.h>
40_GLIBCXX_BEGIN_NAMESPACE_VERSION
42 /// A class that describes a location in source code.
43 struct source_location
46 using uint_least32_t = __UINT_LEAST32_TYPE__;
49 const char* _M_file_name;
50 const char* _M_function_name;
54 using __builtin_ret_type = decltype(__builtin_source_location());
58 // [support.srcloc.cons], creation
59 static consteval source_location
60 current(__builtin_ret_type __p = __builtin_source_location()) noexcept
62 source_location __ret;
63 __ret._M_impl = static_cast <const __impl*>(__p);
67 constexpr source_location() noexcept { }
69 // [support.srcloc.obs], observers
70 constexpr uint_least32_t
72 { return _M_impl ? _M_impl->_M_line : 0u; }
74 constexpr uint_least32_t
75 column() const noexcept
76 { return _M_impl ? _M_impl->_M_column : 0u; }
79 file_name() const noexcept
80 { return _M_impl ? _M_impl->_M_file_name : ""; }
83 function_name() const noexcept
84 { return _M_impl ? _M_impl->_M_function_name : ""; }
87 const __impl* _M_impl = nullptr;
90_GLIBCXX_END_NAMESPACE_VERSION
92#endif // __cpp_lib_source_location
93#endif // _GLIBCXX_SRCLOC