// Versatile string utility -*- C++ -*-
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// Versatile string utility -*- C++ -*-
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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//
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// <http://www.gnu.org/licenses/>.
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/** @file ext/vstring_util.h
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/** @file ext/vstring_util.h
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* This file is a GNU extension to the Standard C++ Library.
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* This file is a GNU extension to the Standard C++ Library.
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* This is an internal header file, included by other library headers.
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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* You should not attempt to use it directly.
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*/
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*/
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#ifndef _VSTRING_UTIL_H
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#ifndef _VSTRING_UTIL_H
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#define _VSTRING_UTIL_H 1
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#define _VSTRING_UTIL_H 1
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#pragma GCC system_header
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#pragma GCC system_header
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#include <ext/vstring_fwd.h>
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#include <ext/vstring_fwd.h>
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#include <debug/debug.h>
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#include <debug/debug.h>
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#include <bits/stl_function.h> // For less
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#include <bits/stl_function.h> // For less
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#include <bits/functexcept.h>
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#include <bits/functexcept.h>
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#include <bits/localefwd.h>
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#include <bits/localefwd.h>
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#include <bits/ostream_insert.h>
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#include <bits/ostream_insert.h>
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#include <bits/stl_iterator.h>
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#include <bits/stl_iterator.h>
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#include <ext/numeric_traits.h>
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#include <ext/numeric_traits.h>
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#include <bits/move.h>
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#include <bits/move.h>
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_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
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_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
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template<typename _CharT, typename _Traits, typename _Alloc>
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template<typename _CharT, typename _Traits, typename _Alloc>
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struct __vstring_utility
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struct __vstring_utility
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{
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{
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typedef typename _Alloc::template rebind<_CharT>::other _CharT_alloc_type;
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typedef typename _Alloc::template rebind<_CharT>::other _CharT_alloc_type;
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typedef _Traits traits_type;
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typedef _Traits traits_type;
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typedef typename _Traits::char_type value_type;
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typedef typename _Traits::char_type value_type;
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typedef typename _CharT_alloc_type::size_type size_type;
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typedef typename _CharT_alloc_type::size_type size_type;
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typedef typename _CharT_alloc_type::difference_type difference_type;
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typedef typename _CharT_alloc_type::difference_type difference_type;
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typedef typename _CharT_alloc_type::pointer pointer;
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typedef typename _CharT_alloc_type::pointer pointer;
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typedef typename _CharT_alloc_type::const_pointer const_pointer;
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typedef typename _CharT_alloc_type::const_pointer const_pointer;
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// For __sso_string.
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// For __sso_string.
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typedef __gnu_cxx::
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typedef __gnu_cxx::
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__normal_iterator<pointer, __gnu_cxx::
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__normal_iterator<pointer, __gnu_cxx::
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__versa_string<_CharT, _Traits, _Alloc,
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__versa_string<_CharT, _Traits, _Alloc,
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__sso_string_base> >
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__sso_string_base> >
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__sso_iterator;
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__sso_iterator;
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typedef __gnu_cxx::
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typedef __gnu_cxx::
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__normal_iterator<const_pointer, __gnu_cxx::
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__normal_iterator<const_pointer, __gnu_cxx::
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__versa_string<_CharT, _Traits, _Alloc,
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__versa_string<_CharT, _Traits, _Alloc,
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__sso_string_base> >
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__sso_string_base> >
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__const_sso_iterator;
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__const_sso_iterator;
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// For __rc_string.
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// For __rc_string.
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typedef __gnu_cxx::
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typedef __gnu_cxx::
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__normal_iterator<pointer, __gnu_cxx::
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__normal_iterator<pointer, __gnu_cxx::
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__versa_string<_CharT, _Traits, _Alloc,
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__versa_string<_CharT, _Traits, _Alloc,
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__rc_string_base> >
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__rc_string_base> >
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__rc_iterator;
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__rc_iterator;
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typedef __gnu_cxx::
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typedef __gnu_cxx::
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__normal_iterator<const_pointer, __gnu_cxx::
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__normal_iterator<const_pointer, __gnu_cxx::
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__versa_string<_CharT, _Traits, _Alloc,
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__versa_string<_CharT, _Traits, _Alloc,
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__rc_string_base> >
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__rc_string_base> >
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__const_rc_iterator;
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__const_rc_iterator;
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// NB: When the allocator is empty, deriving from it saves space
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// NB: When the allocator is empty, deriving from it saves space
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// (http://www.cantrip.org/emptyopt.html).
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// (http://www.cantrip.org/emptyopt.html).
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template<typename _Alloc1>
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template<typename _Alloc1>
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struct _Alloc_hider
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struct _Alloc_hider
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: public _Alloc1
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: public _Alloc1
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{
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{
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_Alloc_hider(_CharT* __ptr)
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_Alloc_hider(_CharT* __ptr)
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: _Alloc1(), _M_p(__ptr) { }
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: _Alloc1(), _M_p(__ptr) { }
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_Alloc_hider(const _Alloc1& __a, _CharT* __ptr)
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_Alloc_hider(const _Alloc1& __a, _CharT* __ptr)
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: _Alloc1(__a), _M_p(__ptr) { }
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: _Alloc1(__a), _M_p(__ptr) { }
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_CharT* _M_p; // The actual data.
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_CharT* _M_p; // The actual data.
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};
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};
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// When __n = 1 way faster than the general multichar
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// When __n = 1 way faster than the general multichar
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// traits_type::copy/move/assign.
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// traits_type::copy/move/assign.
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static void
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static void
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_S_copy(_CharT* __d, const _CharT* __s, size_type __n)
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_S_copy(_CharT* __d, const _CharT* __s, size_type __n)
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{
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{
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if (__n == 1)
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if (__n == 1)
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traits_type::assign(*__d, *__s);
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traits_type::assign(*__d, *__s);
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else
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else
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traits_type::copy(__d, __s, __n);
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traits_type::copy(__d, __s, __n);
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}
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}
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static void
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static void
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_S_move(_CharT* __d, const _CharT* __s, size_type __n)
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_S_move(_CharT* __d, const _CharT* __s, size_type __n)
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{
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{
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if (__n == 1)
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if (__n == 1)
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traits_type::assign(*__d, *__s);
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traits_type::assign(*__d, *__s);
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else
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else
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traits_type::move(__d, __s, __n);
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traits_type::move(__d, __s, __n);
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}
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}
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static void
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static void
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_S_assign(_CharT* __d, size_type __n, _CharT __c)
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_S_assign(_CharT* __d, size_type __n, _CharT __c)
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{
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{
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if (__n == 1)
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if (__n == 1)
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traits_type::assign(*__d, __c);
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traits_type::assign(*__d, __c);
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else
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else
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traits_type::assign(__d, __n, __c);
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traits_type::assign(__d, __n, __c);
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}
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}
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// _S_copy_chars is a separate template to permit specialization
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// _S_copy_chars is a separate template to permit specialization
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// to optimize for the common case of pointers as iterators.
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// to optimize for the common case of pointers as iterators.
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template<typename _Iterator>
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template<typename _Iterator>
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static void
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static void
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_S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
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_S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
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{
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{
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for (; __k1 != __k2; ++__k1, ++__p)
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for (; __k1 != __k2; ++__k1, ++__p)
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traits_type::assign(*__p, *__k1); // These types are off.
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traits_type::assign(*__p, *__k1); // These types are off.
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}
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}
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static void
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static void
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_S_copy_chars(_CharT* __p, __sso_iterator __k1, __sso_iterator __k2)
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_S_copy_chars(_CharT* __p, __sso_iterator __k1, __sso_iterator __k2)
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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static void
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static void
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_S_copy_chars(_CharT* __p, __const_sso_iterator __k1,
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_S_copy_chars(_CharT* __p, __const_sso_iterator __k1,
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__const_sso_iterator __k2)
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__const_sso_iterator __k2)
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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static void
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static void
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_S_copy_chars(_CharT* __p, __rc_iterator __k1, __rc_iterator __k2)
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_S_copy_chars(_CharT* __p, __rc_iterator __k1, __rc_iterator __k2)
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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static void
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static void
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_S_copy_chars(_CharT* __p, __const_rc_iterator __k1,
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_S_copy_chars(_CharT* __p, __const_rc_iterator __k1,
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__const_rc_iterator __k2)
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__const_rc_iterator __k2)
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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static void
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static void
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_S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
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_S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
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{ _S_copy(__p, __k1, __k2 - __k1); }
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{ _S_copy(__p, __k1, __k2 - __k1); }
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static void
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static void
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_S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
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_S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
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{ _S_copy(__p, __k1, __k2 - __k1); }
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{ _S_copy(__p, __k1, __k2 - __k1); }
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static int
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static int
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_S_compare(size_type __n1, size_type __n2)
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_S_compare(size_type __n1, size_type __n2)
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{
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{
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const difference_type __d = difference_type(__n1 - __n2);
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const difference_type __d = difference_type(__n1 - __n2);
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if (__d > __numeric_traits_integer<int>::__max)
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if (__d > __numeric_traits_integer<int>::__max)
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return __numeric_traits_integer<int>::__max;
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return __numeric_traits_integer<int>::__max;
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else if (__d < __numeric_traits_integer<int>::__min)
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else if (__d < __numeric_traits_integer<int>::__min)
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return __numeric_traits_integer<int>::__min;
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return __numeric_traits_integer<int>::__min;
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else
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else
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return int(__d);
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return int(__d);
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}
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}
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};
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};
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_GLIBCXX_END_NAMESPACE
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_GLIBCXX_END_NAMESPACE
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#endif /* _VSTRING_UTIL_H */
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#endif /* _VSTRING_UTIL_H */
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