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The C and C++ Include Header Files

/usr/include/c++/13/string


$ cat -n /usr/include/c++/13/string

     1	// Components for manipulating sequences of characters -*- C++ -*-
     2	
     3	// Copyright (C) 1997-2023 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 include/string
    26	 *  This is a Standard C++ Library header.
    27	 */
    28	
    29	//
    30	// ISO C++ 14882: 21  Strings library
    31	//
    32	
    33	#ifndef _GLIBCXX_STRING
    34	#define _GLIBCXX_STRING	1
    35	
    36	#pragma GCC system_header
    37	
    38	#include <bits/requires_hosted.h> // containers
    39	
    40	#include <bits/c++config.h>
    41	#include <bits/stringfwd.h>
    42	#include <bits/char_traits.h>
    43	#include <bits/allocator.h>
    44	#include <bits/cpp_type_traits.h>
    45	#include <bits/localefwd.h>    // For operators >>, <<, and getline.
    46	#include <bits/ostream_insert.h>
    47	#include <bits/stl_iterator_base_funcs.h>
    48	#include <bits/stl_iterator.h>
    49	#include <bits/stl_function.h> // For less
    50	#include <ext/numeric_traits.h>
    51	#include <bits/stl_algobase.h>
    52	#include <bits/refwrap.h>
    53	#include <bits/range_access.h>
    54	#include <bits/basic_string.h>
    55	#include <bits/basic_string.tcc>
    56	
    57	#if __cplusplus >= 201703L && _GLIBCXX_USE_CXX11_ABI
    58	#include <bits/memory_resource.h>
    59	namespace std _GLIBCXX_VISIBILITY(default)
    60	{
    61	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    62	  namespace pmr {
    63	    template<typename _CharT, typename _Traits = char_traits<_CharT>>
    64	      using basic_string = std::basic_string<_CharT, _Traits,
    65						     polymorphic_allocator<_CharT>>;
    66	    using string    = basic_string<char>;
    67	#ifdef _GLIBCXX_USE_CHAR8_T
    68	    using u8string  = basic_string<char8_t>;
    69	#endif
    70	    using u16string = basic_string<char16_t>;
    71	    using u32string = basic_string<char32_t>;
    72	    using wstring   = basic_string<wchar_t>;
    73	  } // namespace pmr
    74	_GLIBCXX_END_NAMESPACE_VERSION
    75	} // namespace std
    76	#endif // C++17
    77	
    78	#if __cplusplus > 201703L
    79	namespace std _GLIBCXX_VISIBILITY(default)
    80	{
    81	_GLIBCXX_BEGIN_NAMESPACE_VERSION
    82	
    83	#define __cpp_lib_erase_if 202002L
    84	
    85	  template<typename _CharT, typename _Traits, typename _Alloc,
    86		   typename _Predicate>
    87	    _GLIBCXX20_CONSTEXPR
    88	    inline typename basic_string<_CharT, _Traits, _Alloc>::size_type
    89	    erase_if(basic_string<_CharT, _Traits, _Alloc>& __cont, _Predicate __pred)
    90	    {
    91	      using namespace __gnu_cxx;
    92	      const auto __osz = __cont.size();
    93	      const auto __end = __cont.end();
    94	      auto __removed = std::__remove_if(__cont.begin(), __end,
    95						__ops::__pred_iter(std::ref(__pred)));
    96	      __cont.erase(__removed, __end);
    97	      return __osz - __cont.size();
    98	    }
    99	
   100	  template<typename _CharT, typename _Traits, typename _Alloc, typename _Up>
   101	    _GLIBCXX20_CONSTEXPR
   102	    inline typename basic_string<_CharT, _Traits, _Alloc>::size_type
   103	    erase(basic_string<_CharT, _Traits, _Alloc>& __cont, const _Up& __value)
   104	    {
   105	      using namespace __gnu_cxx;
   106	      const auto __osz = __cont.size();
   107	      const auto __end = __cont.end();
   108	      auto __removed = std::__remove_if(__cont.begin(), __end,
   109						__ops::__iter_equals_val(__value));
   110	      __cont.erase(__removed, __end);
   111	      return __osz - __cont.size();
   112	    }
   113	_GLIBCXX_END_NAMESPACE_VERSION
   114	} // namespace std
   115	#endif // C++20
   116	
   117	#endif /* _GLIBCXX_STRING */