The C and C++ Include Header Files

/usr/include/c++/11/experimental/source_location


$ cat -n /usr/include/c++/11/experimental/source_location

     1	// <experimental/source_location> -*- C++ -*-
     2	
     3	// Copyright (C) 2015-2021 Free Software Foundation, Inc.
     4	//
     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)
     9	// any later version.
    10	
    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.
    15	
    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.
    19	
    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/>.
    24	
    25	/** @file experimental/source_location
    26	 *  This is a TS C++ Library header.
    27	 *  @ingroup libfund-ts
    28	 */
    29	
    30	#ifndef _GLIBCXX_EXPERIMENTAL_SRCLOC
    31	#define _GLIBCXX_EXPERIMENTAL_SRCLOC 1
    32	
    33	#if __cplusplus >= 201402L
    34	#include <cstdint>
    35	
    36	namespace std {
    37	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    38	
    39	namespace experimental {
    40	inline namespace fundamentals_v2 {
    41	#define __cpp_lib_experimental_source_location 201505
    42	
    43	  struct source_location
    44	  {
    45	#ifndef _GLIBCXX_USE_C99_STDINT_TR1
    46	  private:
    47	    using uint_least32_t = unsigned;
    48	  public:
    49	#endif
    50	
    51	    // 14.1.2, source_location creation
    52	    static constexpr source_location
    53	    current(const char* __file = __builtin_FILE(),
    54		    const char* __func = __builtin_FUNCTION(),
    55		    int __line = __builtin_LINE(),
    56		    int __col = 0) noexcept
    57	    {
    58	      source_location __loc;
    59	      __loc._M_file = __file;
    60	      __loc._M_func = __func;
    61	      __loc._M_line = __line;
    62	      __loc._M_col = __col;
    63	      return __loc;
    64	    }
    65	
    66	    constexpr source_location() noexcept
    67	    : _M_file("unknown"), _M_func(_M_file), _M_line(0), _M_col(0)
    68	    { }
    69	
    70	    // 14.1.3, source_location field access
    71	    constexpr uint_least32_t line() const noexcept { return _M_line; }
    72	    constexpr uint_least32_t column() const noexcept { return _M_col; }
    73	    constexpr const char* file_name() const noexcept { return _M_file; }
    74	    constexpr const char* function_name() const noexcept { return _M_func; }
    75	
    76	  private:
    77	    const char* _M_file;
    78	    const char* _M_func;
    79	    uint_least32_t _M_line;
    80	    uint_least32_t _M_col;
    81	  };
    82	} // namespace fundamentals_v2
    83	} // namespace experimental
    84	
    85	_GLIBCXX_END_NAMESPACE_VERSION
    86	} // namespace std
    87	
    88	#endif // C++14
    89	#endif // _GLIBCXX_EXPERIMENTAL_SRCLOC