string

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// Components for manipulating sequences of characters -*- C++ -*-
 
// Copyright (C) 1997-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
 
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
 
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.
 
/** @file include/string
 *  This is a Standard C++ Library header.
 */
 
//
// ISO C++ 14882: 21  Strings library
//
 
#ifndef _GLIBCXX_STRING
#define _GLIBCXX_STRING 1
 
#ifdef _GLIBCXX_SYSHDR
#pragma GCC system_header
#endif
 
#include <bits/requires_hosted.h> // containers
 
#include <bits/c++config.h>
#define __glibcxx_exc_in_string 1
#include <bits/stringfwd.h>
#include <bits/char_traits.h>
#include <bits/allocator.h>
#include <bits/cpp_type_traits.h>
#include <bits/localefwd.h>    // For operators >>, <<, and getline.
#include <bits/ostream_insert.h>
#include <bits/stl_iterator_base_funcs.h>
#include <bits/stl_iterator.h>
#include <bits/stl_function.h> // For less
#include <ext/numeric_traits.h>
#include <bits/stdexcept_throw.h>
#include <bits/stl_algobase.h>
#include <bits/range_access.h>
#include <bits/basic_string.h>
#include <bits/basic_string.tcc>
#if (_GLIBCXX_HOSTED && __cpp_exceptions && __cplusplus > 202302L \
     && __cpp_constexpr_exceptions >= 202411L)
#include <bits/stdexcept_except.h>
#undef __glibcxx_exc_in_string
#include <bits/stdexcept_throw.h>
#else
#undef __glibcxx_exc_in_string
#endif
 
#define __glibcxx_want_algorithm_default_value_type
#define __glibcxx_want_allocator_traits_is_always_equal
#define __glibcxx_want_constexpr_char_traits
#define __glibcxx_want_constexpr_string
#define __glibcxx_want_containers_ranges
#define __glibcxx_want_erase_if
#define __glibcxx_want_nonmember_container_access
#define __glibcxx_want_string_resize_and_overwrite
#define __glibcxx_want_string_subview
#define __glibcxx_want_string_udls
#define __glibcxx_want_to_string
#include <bits/version.h>
 
#if __cplusplus >= 201703L && _GLIBCXX_USE_CXX11_ABI
#include <bits/memory_resource.h>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
  namespace pmr {
    template<typename _CharT, typename _Traits = char_traits<_CharT>>
      using basic_string = std::basic_string<_CharT, _Traits,
                                             polymorphic_allocator<_CharT>>;
    using string    = basic_string<char>;
#ifdef _GLIBCXX_USE_CHAR8_T
    using u8string  = basic_string<char8_t>;
#endif
    using u16string = basic_string<char16_t>;
    using u32string = basic_string<char32_t>;
    using wstring   = basic_string<wchar_t>;
  } // namespace pmr
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++17
 
#ifdef __cpp_lib_erase_if // C++ >= 20 && HOSTED
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
 
  template<typename _CharT, typename _Traits, typename _Alloc,
           typename _Predicate>
    constexpr typename basic_string<_CharT, _Traits, _Alloc>::size_type
    erase_if(basic_string<_CharT, _Traits, _Alloc>& __cont, _Predicate __pred)
    {
      using namespace __gnu_cxx;
      const auto __osz = __cont.size();
      const auto __end = __cont.end();
      auto __removed = std::__remove_if(__cont.begin(), __end,
                                        std::move(__pred));
      __cont.erase(__removed, __end);
      return __osz - __cont.size();
    }
 
  template<typename _CharT, typename _Traits, typename _Alloc,
           typename _Up _GLIBCXX26_DEF_VAL_T(_CharT)>
    constexpr typename basic_string<_CharT, _Traits, _Alloc>::size_type
    erase(basic_string<_CharT, _Traits, _Alloc>& __cont, const _Up& __value)
    { return std::erase_if(__cont, __gnu_cxx::__ops::__equal_to(__value)); }
 
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // __cpp_lib_erase_if
 
#endif /* _GLIBCXX_STRING */