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