ed6814f7b3
From-SVN: r77479
2329 lines
86 KiB
C++
2329 lines
86 KiB
C++
// Components for manipulating sequences of characters -*- C++ -*-
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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// Free Software Foundation, Inc.
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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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// 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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// Free Software Foundation; either version 2, or (at your option)
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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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// 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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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 21 Strings library
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//
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/** @file basic_string.h
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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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*/
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#ifndef _BASIC_STRING_H
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#define _BASIC_STRING_H 1
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#pragma GCC system_header
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#include <bits/atomicity.h>
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#include <debug/debug.h>
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namespace std
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{
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/**
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* @class basic_string basic_string.h <string>
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* @brief Managing sequences of characters and character-like objects.
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*
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* @ingroup Containers
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* @ingroup Sequences
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*
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* Meets the requirements of a <a href="tables.html#65">container</a>, a
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* <a href="tables.html#66">reversible container</a>, and a
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* <a href="tables.html#67">sequence</a>. Of the
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* <a href="tables.html#68">optional sequence requirements</a>, only
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* @c push_back, @c at, and array access are supported.
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*
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* @doctodo
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*
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*
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* @if maint
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* Documentation? What's that?
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* Nathan Myers <ncm@cantrip.org>.
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*
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* A string looks like this:
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*
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* @code
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* [_Rep]
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* _M_length
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* [basic_string<char_type>] _M_capacity
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* _M_dataplus _M_refcount
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* _M_p ----------------> unnamed array of char_type
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* @endcode
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*
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* Where the _M_p points to the first character in the string, and
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* you cast it to a pointer-to-_Rep and subtract 1 to get a
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* pointer to the header.
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*
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* This approach has the enormous advantage that a string object
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* requires only one allocation. All the ugliness is confined
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* within a single pair of inline functions, which each compile to
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* a single "add" instruction: _Rep::_M_data(), and
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* string::_M_rep(); and the allocation function which gets a
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* block of raw bytes and with room enough and constructs a _Rep
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* object at the front.
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*
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* The reason you want _M_data pointing to the character array and
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* not the _Rep is so that the debugger can see the string
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* contents. (Probably we should add a non-inline member to get
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* the _Rep for the debugger to use, so users can check the actual
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* string length.)
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*
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* Note that the _Rep object is a POD so that you can have a
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* static "empty string" _Rep object already "constructed" before
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* static constructors have run. The reference-count encoding is
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* chosen so that a 0 indicates one reference, so you never try to
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* destroy the empty-string _Rep object.
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*
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* All but the last paragraph is considered pretty conventional
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* for a C++ string implementation.
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* @endif
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*/
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// 21.3 Template class basic_string
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template<typename _CharT, typename _Traits, typename _Alloc>
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class basic_string
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{
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// Types:
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public:
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typedef _Traits traits_type;
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typedef typename _Traits::char_type value_type;
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typedef _Alloc allocator_type;
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typedef typename _Alloc::size_type size_type;
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typedef typename _Alloc::difference_type difference_type;
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typedef typename _Alloc::reference reference;
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typedef typename _Alloc::const_reference const_reference;
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typedef typename _Alloc::pointer pointer;
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typedef typename _Alloc::const_pointer const_pointer;
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typedef __gnu_cxx::__normal_iterator<pointer, basic_string> iterator;
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typedef __gnu_cxx::__normal_iterator<const_pointer, basic_string>
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const_iterator;
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typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
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typedef std::reverse_iterator<iterator> reverse_iterator;
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private:
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// _Rep: string representation
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// Invariants:
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// 1. String really contains _M_length + 1 characters: due to 21.3.4
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// must be kept null-terminated.
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// 2. _M_capacity >= _M_length
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// Allocated memory is always (_M_capacity + 1) * sizeof(_CharT).
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// 3. _M_refcount has three states:
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// -1: leaked, one reference, no ref-copies allowed, non-const.
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// 0: one reference, non-const.
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// n>0: n + 1 references, operations require a lock, const.
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// 4. All fields==0 is an empty string, given the extra storage
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// beyond-the-end for a null terminator; thus, the shared
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// empty string representation needs no constructor.
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struct _Rep_base
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{
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size_type _M_length;
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size_type _M_capacity;
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_Atomic_word _M_refcount;
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};
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struct _Rep : _Rep_base
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{
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// Types:
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typedef typename _Alloc::template rebind<char>::other _Raw_bytes_alloc;
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// (Public) Data members:
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// The maximum number of individual char_type elements of an
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// individual string is determined by _S_max_size. This is the
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// value that will be returned by max_size(). (Whereas npos
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// is the maximum number of bytes the allocator can allocate.)
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// If one was to divvy up the theoretical largest size string,
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// with a terminating character and m _CharT elements, it'd
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// look like this:
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// npos = sizeof(_Rep) + (m * sizeof(_CharT)) + sizeof(_CharT)
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// Solving for m:
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// m = ((npos - sizeof(_Rep))/sizeof(CharT)) - 1
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// In addition, this implementation quarters this amount.
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static const size_type _S_max_size;
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static const _CharT _S_terminal;
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// The following storage is init'd to 0 by the linker, resulting
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// (carefully) in an empty string with one reference.
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static size_type _S_empty_rep_storage[];
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static _Rep&
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_S_empty_rep()
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{ return *reinterpret_cast<_Rep*>(&_S_empty_rep_storage); }
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bool
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_M_is_leaked() const
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{ return this->_M_refcount < 0; }
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bool
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_M_is_shared() const
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{ return this->_M_refcount > 0; }
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void
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_M_set_leaked()
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{ this->_M_refcount = -1; }
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void
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_M_set_sharable()
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{ this->_M_refcount = 0; }
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_CharT*
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_M_refdata() throw()
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{ return reinterpret_cast<_CharT*>(this + 1); }
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_CharT*
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_M_grab(const _Alloc& __alloc1, const _Alloc& __alloc2)
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{
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return (!_M_is_leaked() && __alloc1 == __alloc2)
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? _M_refcopy() : _M_clone(__alloc1);
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}
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// Create & Destroy
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static _Rep*
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_S_create(size_type, size_type, const _Alloc&);
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void
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_M_dispose(const _Alloc& __a)
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{
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if (__builtin_expect(this != &_S_empty_rep(), false))
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if (__exchange_and_add(&this->_M_refcount, -1) <= 0)
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_M_destroy(__a);
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} // XXX MT
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void
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_M_destroy(const _Alloc&) throw();
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_CharT*
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_M_refcopy() throw()
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{
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if (__builtin_expect(this != &_S_empty_rep(), false))
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__atomic_add(&this->_M_refcount, 1);
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return _M_refdata();
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} // XXX MT
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_CharT*
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_M_clone(const _Alloc&, size_type __res = 0);
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};
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// Use empty-base optimization: http://www.cantrip.org/emptyopt.html
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struct _Alloc_hider : _Alloc
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{
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_Alloc_hider(_CharT* __dat, const _Alloc& __a)
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: _Alloc(__a), _M_p(__dat) { }
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_CharT* _M_p; // The actual data.
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};
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public:
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// Data Members (public):
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// NB: This is an unsigned type, and thus represents the maximum
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// size that the allocator can hold.
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/// @var
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/// Value returned by various member functions when they fail.
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static const size_type npos = static_cast<size_type>(-1);
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private:
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// Data Members (private):
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mutable _Alloc_hider _M_dataplus;
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_CharT*
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_M_data() const
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{ return _M_dataplus._M_p; }
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_CharT*
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_M_data(_CharT* __p)
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{ return (_M_dataplus._M_p = __p); }
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_Rep*
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_M_rep() const
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{ return &((reinterpret_cast<_Rep*> (_M_data()))[-1]); }
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// For the internal use we have functions similar to `begin'/`end'
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// but they do not call _M_leak.
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iterator
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_M_ibegin() const { return iterator(_M_data()); }
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iterator
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_M_iend() const { return iterator(_M_data() + this->size()); }
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void
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_M_leak() // for use in begin() & non-const op[]
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{
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if (!_M_rep()->_M_is_leaked())
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_M_leak_hard();
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}
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size_type
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_M_check(size_type __pos, const char* __s) const
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{
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if (__pos > this->size())
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__throw_out_of_range(__N(__s));
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return __pos;
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}
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// NB: _M_limit doesn't check for a bad __pos value.
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size_type
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_M_limit(size_type __pos, size_type __off) const
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{
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const bool __testoff = __off < this->size() - __pos;
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return __testoff ? __off : this->size() - __pos;
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}
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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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template<class _Iterator>
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static void
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_S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
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{
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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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}
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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(__p, __k1.base(), __k2.base()); }
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static void
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_S_copy_chars(_CharT* __p, const_iterator __k1, const_iterator __k2)
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{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
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static void
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_S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
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{ traits_type::copy(__p, __k1, __k2 - __k1); }
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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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{ traits_type::copy(__p, __k1, __k2 - __k1); }
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void
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_M_mutate(size_type __pos, size_type __len1, size_type __len2);
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void
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_M_leak_hard();
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static _Rep&
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_S_empty_rep()
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{ return _Rep::_S_empty_rep(); }
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public:
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// Construct/copy/destroy:
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// NB: We overload ctors in some cases instead of using default
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// arguments, per 17.4.4.4 para. 2 item 2.
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/**
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* @brief Default constructor creates an empty string.
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*/
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inline
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basic_string();
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/**
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* @brief Construct an empty string using allocator a.
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*/
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explicit
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basic_string(const _Alloc& __a);
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// NB: per LWG issue 42, semantics different from IS:
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/**
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* @brief Construct string with copy of value of @a str.
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* @param str Source string.
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*/
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basic_string(const basic_string& __str);
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/**
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* @brief Construct string as copy of a substring.
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* @param str Source string.
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* @param pos Index of first character to copy from.
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* @param n Number of characters to copy (default remainder).
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*/
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basic_string(const basic_string& __str, size_type __pos,
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size_type __n = npos);
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/**
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* @brief Construct string as copy of a substring.
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* @param str Source string.
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* @param pos Index of first character to copy from.
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* @param n Number of characters to copy.
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* @param a Allocator to use.
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*/
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basic_string(const basic_string& __str, size_type __pos,
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size_type __n, const _Alloc& __a);
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/**
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* @brief Construct string initialized by a character array.
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* @param s Source character array.
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* @param n Number of characters to copy.
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* @param a Allocator to use (default is default allocator).
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*
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* NB: s must have at least n characters, '\0' has no special
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* meaning.
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*/
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basic_string(const _CharT* __s, size_type __n,
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const _Alloc& __a = _Alloc());
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/**
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* @brief Construct string as copy of a C string.
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* @param s Source C string.
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* @param a Allocator to use (default is default allocator).
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*/
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basic_string(const _CharT* __s, const _Alloc& __a = _Alloc());
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/**
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* @brief Construct string as multiple characters.
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* @param n Number of characters.
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* @param c Character to use.
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* @param a Allocator to use (default is default allocator).
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*/
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basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc());
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/**
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* @brief Construct string as copy of a range.
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* @param beg Start of range.
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* @param end End of range.
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* @param a Allocator to use (default is default allocator).
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*/
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template<class _InputIterator>
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basic_string(_InputIterator __beg, _InputIterator __end,
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const _Alloc& __a = _Alloc());
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/**
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* @brief Destroy the string instance.
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*/
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~basic_string()
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{ _M_rep()->_M_dispose(this->get_allocator()); }
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/**
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* @brief Assign the value of @a str to this string.
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* @param str Source string.
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*/
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basic_string&
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operator=(const basic_string& __str) { return this->assign(__str); }
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/**
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* @brief Copy contents of @a s into this string.
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* @param s Source null-terminated string.
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*/
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basic_string&
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operator=(const _CharT* __s) { return this->assign(__s); }
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/**
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* @brief Set value to string of length 1.
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* @param c Source character.
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*
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* Assigning to a character makes this string length 1 and
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* (*this)[0] == @a c.
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*/
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basic_string&
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operator=(_CharT __c) { return this->assign(1, __c); }
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// Iterators:
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/**
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* Returns a read/write iterator that points to the first character in
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* the %string. Unshares the string.
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*/
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iterator
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begin()
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{
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_M_leak();
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return iterator(_M_data());
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}
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/**
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* Returns a read-only (constant) iterator that points to the first
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* character in the %string.
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*/
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const_iterator
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begin() const
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{ return const_iterator(_M_data()); }
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/**
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* Returns a read/write iterator that points one past the last
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* character in the %string. Unshares the string.
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*/
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iterator
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end()
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{
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_M_leak();
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return iterator(_M_data() + this->size());
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}
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/**
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* Returns a read-only (constant) iterator that points one past the
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* last character in the %string.
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*/
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const_iterator
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end() const
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{ return const_iterator(_M_data() + this->size()); }
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/**
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* Returns a read/write reverse iterator that points to the last
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* character in the %string. Iteration is done in reverse element
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* order. Unshares the string.
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*/
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reverse_iterator
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rbegin()
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{ return reverse_iterator(this->end()); }
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/**
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* Returns a read-only (constant) reverse iterator that points
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* to the last character in the %string. Iteration is done in
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* reverse element order.
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*/
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const_reverse_iterator
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rbegin() const
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{ return const_reverse_iterator(this->end()); }
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/**
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* Returns a read/write reverse iterator that points to one before the
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* first character in the %string. Iteration is done in reverse
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* element order. Unshares the string.
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*/
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reverse_iterator
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rend()
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{ return reverse_iterator(this->begin()); }
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/**
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* Returns a read-only (constant) reverse iterator that points
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* to one before the first character in the %string. Iteration
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* is done in reverse element order.
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*/
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const_reverse_iterator
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rend() const
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{ return const_reverse_iterator(this->begin()); }
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public:
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// Capacity:
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/// Returns the number of characters in the string, not including any
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/// null-termination.
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size_type
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size() const { return _M_rep()->_M_length; }
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|
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/// Returns the number of characters in the string, not including any
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/// null-termination.
|
|
size_type
|
|
length() const { return _M_rep()->_M_length; }
|
|
|
|
/// Returns the size() of the largest possible %string.
|
|
size_type
|
|
max_size() const { return _Rep::_S_max_size; }
|
|
|
|
/**
|
|
* @brief Resizes the %string to the specified number of characters.
|
|
* @param n Number of characters the %string should contain.
|
|
* @param c Character to fill any new elements.
|
|
*
|
|
* This function will %resize the %string to the specified
|
|
* number of characters. If the number is smaller than the
|
|
* %string's current size the %string is truncated, otherwise
|
|
* the %string is extended and new elements are set to @a c.
|
|
*/
|
|
void
|
|
resize(size_type __n, _CharT __c);
|
|
|
|
/**
|
|
* @brief Resizes the %string to the specified number of characters.
|
|
* @param n Number of characters the %string should contain.
|
|
*
|
|
* This function will resize the %string to the specified length. If
|
|
* the new size is smaller than the %string's current size the %string
|
|
* is truncated, otherwise the %string is extended and new characters
|
|
* are default-constructed. For basic types such as char, this means
|
|
* setting them to 0.
|
|
*/
|
|
void
|
|
resize(size_type __n) { this->resize(__n, _CharT()); }
|
|
|
|
/**
|
|
* Returns the total number of characters that the %string can hold
|
|
* before needing to allocate more memory.
|
|
*/
|
|
size_type
|
|
capacity() const { return _M_rep()->_M_capacity; }
|
|
|
|
/**
|
|
* @brief Attempt to preallocate enough memory for specified number of
|
|
* characters.
|
|
* @param n Number of characters required.
|
|
* @throw std::length_error If @a n exceeds @c max_size().
|
|
*
|
|
* This function attempts to reserve enough memory for the
|
|
* %string to hold the specified number of characters. If the
|
|
* number requested is more than max_size(), length_error is
|
|
* thrown.
|
|
*
|
|
* The advantage of this function is that if optimal code is a
|
|
* necessity and the user can determine the string length that will be
|
|
* required, the user can reserve the memory in %advance, and thus
|
|
* prevent a possible reallocation of memory and copying of %string
|
|
* data.
|
|
*/
|
|
void
|
|
reserve(size_type __res_arg = 0);
|
|
|
|
/**
|
|
* Erases the string, making it empty.
|
|
*/
|
|
void
|
|
clear() { _M_mutate(0, this->size(), 0); }
|
|
|
|
/**
|
|
* Returns true if the %string is empty. Equivalent to *this == "".
|
|
*/
|
|
bool
|
|
empty() const { return this->size() == 0; }
|
|
|
|
// Element access:
|
|
/**
|
|
* @brief Subscript access to the data contained in the %string.
|
|
* @param n The index of the character to access.
|
|
* @return Read-only (constant) reference to the character.
|
|
*
|
|
* This operator allows for easy, array-style, data access.
|
|
* Note that data access with this operator is unchecked and
|
|
* out_of_range lookups are not defined. (For checked lookups
|
|
* see at().)
|
|
*/
|
|
const_reference
|
|
operator[] (size_type __pos) const
|
|
{
|
|
_GLIBCXX_DEBUG_ASSERT(__pos <= size());
|
|
return _M_data()[__pos];
|
|
}
|
|
|
|
/**
|
|
* @brief Subscript access to the data contained in the %string.
|
|
* @param n The index of the character to access.
|
|
* @return Read/write reference to the character.
|
|
*
|
|
* This operator allows for easy, array-style, data access.
|
|
* Note that data access with this operator is unchecked and
|
|
* out_of_range lookups are not defined. (For checked lookups
|
|
* see at().) Unshares the string.
|
|
*/
|
|
reference
|
|
operator[](size_type __pos)
|
|
{
|
|
_GLIBCXX_DEBUG_ASSERT(__pos < size());
|
|
_M_leak();
|
|
return _M_data()[__pos];
|
|
}
|
|
|
|
/**
|
|
* @brief Provides access to the data contained in the %string.
|
|
* @param n The index of the character to access.
|
|
* @return Read-only (const) reference to the character.
|
|
* @throw std::out_of_range If @a n is an invalid index.
|
|
*
|
|
* This function provides for safer data access. The parameter is
|
|
* first checked that it is in the range of the string. The function
|
|
* throws out_of_range if the check fails.
|
|
*/
|
|
const_reference
|
|
at(size_type __n) const
|
|
{
|
|
if (__n >= this->size())
|
|
__throw_out_of_range(__N("basic_string::at"));
|
|
return _M_data()[__n];
|
|
}
|
|
|
|
/**
|
|
* @brief Provides access to the data contained in the %string.
|
|
* @param n The index of the character to access.
|
|
* @return Read/write reference to the character.
|
|
* @throw std::out_of_range If @a n is an invalid index.
|
|
*
|
|
* This function provides for safer data access. The parameter is
|
|
* first checked that it is in the range of the string. The function
|
|
* throws out_of_range if the check fails. Success results in
|
|
* unsharing the string.
|
|
*/
|
|
reference
|
|
at(size_type __n)
|
|
{
|
|
if (__n >= size())
|
|
__throw_out_of_range(__N("basic_string::at"));
|
|
_M_leak();
|
|
return _M_data()[__n];
|
|
}
|
|
|
|
// Modifiers:
|
|
/**
|
|
* @brief Append a string to this string.
|
|
* @param str The string to append.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
operator+=(const basic_string& __str) { return this->append(__str); }
|
|
|
|
/**
|
|
* @brief Append a C string.
|
|
* @param s The C string to append.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
operator+=(const _CharT* __s) { return this->append(__s); }
|
|
|
|
/**
|
|
* @brief Append a character.
|
|
* @param s The character to append.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
operator+=(_CharT __c) { return this->append(size_type(1), __c); }
|
|
|
|
/**
|
|
* @brief Append a string to this string.
|
|
* @param str The string to append.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
append(const basic_string& __str);
|
|
|
|
/**
|
|
* @brief Append a substring.
|
|
* @param str The string to append.
|
|
* @param pos Index of the first character of str to append.
|
|
* @param n The number of characters to append.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range if @a pos is not a valid index.
|
|
*
|
|
* This function appends @a n characters from @a str starting at @a pos
|
|
* to this string. If @a n is is larger than the number of available
|
|
* characters in @a str, the remainder of @a str is appended.
|
|
*/
|
|
basic_string&
|
|
append(const basic_string& __str, size_type __pos, size_type __n);
|
|
|
|
/**
|
|
* @brief Append a C substring.
|
|
* @param s The C string to append.
|
|
* @param n The number of characters to append.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
append(const _CharT* __s, size_type __n);
|
|
|
|
/**
|
|
* @brief Append a C string.
|
|
* @param s The C string to append.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
append(const _CharT* __s)
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->append(__s, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Append multiple characters.
|
|
* @param n The number of characters to append.
|
|
* @param c The character to use.
|
|
* @return Reference to this string.
|
|
*
|
|
* Appends n copies of c to this string.
|
|
*/
|
|
basic_string&
|
|
append(size_type __n, _CharT __c)
|
|
{ return _M_replace_aux(this->size(), size_type(0), __n, __c); }
|
|
|
|
/**
|
|
* @brief Append a range of characters.
|
|
* @param first Iterator referencing the first character to append.
|
|
* @param last Iterator marking the end of the range.
|
|
* @return Reference to this string.
|
|
*
|
|
* Appends characters in the range [first,last) to this string.
|
|
*/
|
|
template<class _InputIterator>
|
|
basic_string&
|
|
append(_InputIterator __first, _InputIterator __last)
|
|
{ return this->replace(_M_iend(), _M_iend(), __first, __last); }
|
|
|
|
/**
|
|
* @brief Append a single character.
|
|
* @param c Character to append.
|
|
*/
|
|
void
|
|
push_back(_CharT __c)
|
|
{ _M_replace_aux(this->size(), size_type(0), size_type(1), __c); }
|
|
|
|
/**
|
|
* @brief Set value to contents of another string.
|
|
* @param str Source string to use.
|
|
* @return Reference to this string.
|
|
*/
|
|
basic_string&
|
|
assign(const basic_string& __str);
|
|
|
|
/**
|
|
* @brief Set value to a substring of a string.
|
|
* @param str The string to use.
|
|
* @param pos Index of the first character of str.
|
|
* @param n Number of characters to use.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range if @a pos is not a valid index.
|
|
*
|
|
* This function sets this string to the substring of @a str consisting
|
|
* of @a n characters at @a pos. If @a n is is larger than the number
|
|
* of available characters in @a str, the remainder of @a str is used.
|
|
*/
|
|
basic_string&
|
|
assign(const basic_string& __str, size_type __pos, size_type __n)
|
|
{ return this->assign(__str._M_data()
|
|
+ __str._M_check(__pos, "basic_string::assign"),
|
|
__str._M_limit(__pos, __n)); }
|
|
|
|
/**
|
|
* @brief Set value to a C substring.
|
|
* @param s The C string to use.
|
|
* @param n Number of characters to use.
|
|
* @return Reference to this string.
|
|
*
|
|
* This function sets the value of this string to the first @a n
|
|
* characters of @a s. If @a n is is larger than the number of
|
|
* available characters in @a s, the remainder of @a s is used.
|
|
*/
|
|
basic_string&
|
|
assign(const _CharT* __s, size_type __n);
|
|
|
|
/**
|
|
* @brief Set value to contents of a C string.
|
|
* @param s The C string to use.
|
|
* @return Reference to this string.
|
|
*
|
|
* This function sets the value of this string to the value of @a s.
|
|
* The data is copied, so there is no dependence on @a s once the
|
|
* function returns.
|
|
*/
|
|
basic_string&
|
|
assign(const _CharT* __s)
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->assign(__s, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Set value to multiple characters.
|
|
* @param n Length of the resulting string.
|
|
* @param c The character to use.
|
|
* @return Reference to this string.
|
|
*
|
|
* This function sets the value of this string to @a n copies of
|
|
* character @a c.
|
|
*/
|
|
basic_string&
|
|
assign(size_type __n, _CharT __c)
|
|
{ return _M_replace_aux(size_type(0), this->size(), __n, __c); }
|
|
|
|
/**
|
|
* @brief Set value to a range of characters.
|
|
* @param first Iterator referencing the first character to append.
|
|
* @param last Iterator marking the end of the range.
|
|
* @return Reference to this string.
|
|
*
|
|
* Sets value of string to characters in the range [first,last).
|
|
*/
|
|
template<class _InputIterator>
|
|
basic_string&
|
|
assign(_InputIterator __first, _InputIterator __last)
|
|
{ return this->replace(_M_ibegin(), _M_iend(), __first, __last); }
|
|
|
|
/**
|
|
* @brief Insert multiple characters.
|
|
* @param p Iterator referencing location in string to insert at.
|
|
* @param n Number of characters to insert
|
|
* @param c The character to insert.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Inserts @a n copies of character @a c starting at the position
|
|
* referenced by iterator @a p. If adding characters causes the length
|
|
* to exceed max_size(), length_error is thrown. The value of the
|
|
* string doesn't change if an error is thrown.
|
|
*/
|
|
void
|
|
insert(iterator __p, size_type __n, _CharT __c)
|
|
{ this->replace(__p, __p, __n, __c); }
|
|
|
|
/**
|
|
* @brief Insert a range of characters.
|
|
* @param p Iterator referencing location in string to insert at.
|
|
* @param beg Start of range.
|
|
* @param end End of range.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Inserts characters in range [beg,end). If adding characters causes
|
|
* the length to exceed max_size(), length_error is thrown. The value
|
|
* of the string doesn't change if an error is thrown.
|
|
*/
|
|
template<class _InputIterator>
|
|
void insert(iterator __p, _InputIterator __beg, _InputIterator __end)
|
|
{ this->replace(__p, __p, __beg, __end); }
|
|
|
|
/**
|
|
* @brief Insert value of a string.
|
|
* @param pos1 Iterator referencing location in string to insert at.
|
|
* @param str The string to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Inserts value of @a str starting at @a pos1. If adding characters
|
|
* causes the length to exceed max_size(), length_error is thrown. The
|
|
* value of the string doesn't change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
insert(size_type __pos1, const basic_string& __str)
|
|
{ return this->insert(__pos1, __str, size_type(0), __str.size()); }
|
|
|
|
/**
|
|
* @brief Insert a substring.
|
|
* @param pos1 Iterator referencing location in string to insert at.
|
|
* @param str The string to insert.
|
|
* @param pos2 Start of characters in str to insert.
|
|
* @param n Number of characters to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
* @throw std::out_of_range If @a pos1 > size() or
|
|
* @a pos2 > @a str.size().
|
|
*
|
|
* Starting at @a pos1, insert @a n character of @a str beginning with
|
|
* @a pos2. If adding characters causes the length to exceed
|
|
* max_size(), length_error is thrown. If @a pos1 is beyond the end of
|
|
* this string or @a pos2 is beyond the end of @a str, out_of_range is
|
|
* thrown. The value of the string doesn't change if an error is
|
|
* thrown.
|
|
*/
|
|
basic_string&
|
|
insert(size_type __pos1, const basic_string& __str,
|
|
size_type __pos2, size_type __n)
|
|
{ return this->insert(__pos1, __str._M_data()
|
|
+ __str._M_check(__pos2, "basic_string::insert"),
|
|
__str._M_limit(__pos2, __n)); }
|
|
|
|
/**
|
|
* @brief Insert a C substring.
|
|
* @param pos Iterator referencing location in string to insert at.
|
|
* @param s The C string to insert.
|
|
* @param n The number of characters to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
* @throw std::out_of_range If @a pos is beyond the end of this
|
|
* string.
|
|
*
|
|
* Inserts the first @a n characters of @a s starting at @a pos. If
|
|
* adding characters causes the length to exceed max_size(),
|
|
* length_error is thrown. If @a pos is beyond end(), out_of_range is
|
|
* thrown. The value of the string doesn't change if an error is
|
|
* thrown.
|
|
*/
|
|
basic_string&
|
|
insert(size_type __pos, const _CharT* __s, size_type __n);
|
|
|
|
/**
|
|
* @brief Insert a C string.
|
|
* @param pos Iterator referencing location in string to insert at.
|
|
* @param s The C string to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
* @throw std::out_of_range If @a pos is beyond the end of this
|
|
* string.
|
|
*
|
|
* Inserts the first @a n characters of @a s starting at @a pos. If
|
|
* adding characters causes the length to exceed max_size(),
|
|
* length_error is thrown. If @a pos is beyond end(), out_of_range is
|
|
* thrown. The value of the string doesn't change if an error is
|
|
* thrown.
|
|
*/
|
|
basic_string&
|
|
insert(size_type __pos, const _CharT* __s)
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->insert(__pos, __s, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Insert multiple characters.
|
|
* @param pos Index in string to insert at.
|
|
* @param n Number of characters to insert
|
|
* @param c The character to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
* @throw std::out_of_range If @a pos is beyond the end of this
|
|
* string.
|
|
*
|
|
* Inserts @a n copies of character @a c starting at index @a pos. If
|
|
* adding characters causes the length to exceed max_size(),
|
|
* length_error is thrown. If @a pos > length(), out_of_range is
|
|
* thrown. The value of the string doesn't change if an error is
|
|
* thrown.
|
|
*/
|
|
basic_string&
|
|
insert(size_type __pos, size_type __n, _CharT __c)
|
|
{ return _M_replace_aux(_M_check(__pos, "basic_string::insert"),
|
|
size_type(0), __n, __c); }
|
|
|
|
/**
|
|
* @brief Insert one character.
|
|
* @param p Iterator referencing position in string to insert at.
|
|
* @param c The character to insert.
|
|
* @return Iterator referencing newly inserted char.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Inserts character @a c at position referenced by @a p. If adding
|
|
* character causes the length to exceed max_size(), length_error is
|
|
* thrown. If @a p is beyond end of string, out_of_range is thrown.
|
|
* The value of the string doesn't change if an error is thrown.
|
|
*/
|
|
iterator
|
|
insert(iterator __p, _CharT __c)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend());
|
|
const size_type __pos = __p - _M_ibegin();
|
|
_M_replace_aux(__pos, size_type(0), size_type(1), __c);
|
|
_M_rep()->_M_set_leaked();
|
|
return this->_M_ibegin() + __pos;
|
|
}
|
|
|
|
/**
|
|
* @brief Remove characters.
|
|
* @param pos Index of first character to remove (default 0).
|
|
* @param n Number of characters to remove (default remainder).
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range If @a pos is beyond the end of this
|
|
* string.
|
|
*
|
|
* Removes @a n characters from this string starting at @a pos. The
|
|
* length of the string is reduced by @a n. If there are < @a n
|
|
* characters to remove, the remainder of the string is truncated. If
|
|
* @a p is beyond end of string, out_of_range is thrown. The value of
|
|
* the string doesn't change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
erase(size_type __pos = 0, size_type __n = npos)
|
|
{ return _M_replace_safe(_M_check(__pos, "basic_string::erase"),
|
|
_M_limit(__pos, __n), NULL, size_type(0)); }
|
|
|
|
/**
|
|
* @brief Remove one character.
|
|
* @param position Iterator referencing the character to remove.
|
|
* @return iterator referencing same location after removal.
|
|
*
|
|
* Removes the character at @a position from this string. The value
|
|
* of the string doesn't change if an error is thrown.
|
|
*/
|
|
iterator
|
|
erase(iterator __position)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(__position >= _M_ibegin()
|
|
&& __position < _M_iend());
|
|
const size_type __pos = __position - _M_ibegin();
|
|
_M_replace_safe(__pos, size_type(1), NULL, size_type(0));
|
|
_M_rep()->_M_set_leaked();
|
|
return _M_ibegin() + __pos;
|
|
}
|
|
|
|
/**
|
|
* @brief Remove a range of characters.
|
|
* @param first Iterator referencing the first character to remove.
|
|
* @param last Iterator referencing the end of the range.
|
|
* @return Iterator referencing location of first after removal.
|
|
*
|
|
* Removes the characters in the range [first,last) from this string.
|
|
* The value of the string doesn't change if an error is thrown.
|
|
*/
|
|
iterator
|
|
erase(iterator __first, iterator __last)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(__first >= _M_ibegin() && __first <= __last
|
|
&& __last <= _M_iend());
|
|
const size_type __pos = __first - _M_ibegin();
|
|
_M_replace_safe(__pos, __last - __first, NULL, size_type(0));
|
|
_M_rep()->_M_set_leaked();
|
|
return _M_ibegin() + __pos;
|
|
}
|
|
|
|
/**
|
|
* @brief Replace characters with value from another string.
|
|
* @param pos Index of first character to replace.
|
|
* @param n Number of characters to be replaced.
|
|
* @param str String to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range If @a pos is beyond the end of this
|
|
* string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [pos,pos+n) from this string.
|
|
* In place, the value of @a str is inserted. If @a pos is beyond end
|
|
* of string, out_of_range is thrown. If the length of the result
|
|
* exceeds max_size(), length_error is thrown. The value of the string
|
|
* doesn't change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(size_type __pos, size_type __n, const basic_string& __str)
|
|
{ return this->replace(__pos, __n, __str._M_data(), __str.size()); }
|
|
|
|
/**
|
|
* @brief Replace characters with value from another string.
|
|
* @param pos1 Index of first character to replace.
|
|
* @param n1 Number of characters to be replaced.
|
|
* @param str String to insert.
|
|
* @param pos2 Index of first character of str to use.
|
|
* @param n2 Number of characters from str to use.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range If @a pos1 > size() or @a pos2 >
|
|
* str.size().
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [pos1,pos1 + n) from this
|
|
* string. In place, the value of @a str is inserted. If @a pos is
|
|
* beyond end of string, out_of_range is thrown. If the length of the
|
|
* result exceeds max_size(), length_error is thrown. The value of the
|
|
* string doesn't change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(size_type __pos1, size_type __n1, const basic_string& __str,
|
|
size_type __pos2, size_type __n2)
|
|
{ return this->replace(__pos1, __n1, __str._M_data()
|
|
+ __str._M_check(__pos2, "basic_string::replace"),
|
|
__str._M_limit(__pos2, __n2)); }
|
|
|
|
/**
|
|
* @brief Replace characters with value of a C substring.
|
|
* @param pos Index of first character to replace.
|
|
* @param n1 Number of characters to be replaced.
|
|
* @param str C string to insert.
|
|
* @param n2 Number of characters from str to use.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range If @a pos1 > size().
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [pos,pos + n1) from this string.
|
|
* In place, the first @a n2 characters of @a str are inserted, or all
|
|
* of @a str if @a n2 is too large. If @a pos is beyond end of string,
|
|
* out_of_range is thrown. If the length of result exceeds max_size(),
|
|
* length_error is thrown. The value of the string doesn't change if
|
|
* an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(size_type __pos, size_type __n1, const _CharT* __s,
|
|
size_type __n2);
|
|
|
|
/**
|
|
* @brief Replace characters with value of a C string.
|
|
* @param pos Index of first character to replace.
|
|
* @param n1 Number of characters to be replaced.
|
|
* @param str C string to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range If @a pos > size().
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [pos,pos + n1) from this string.
|
|
* In place, the first @a n characters of @a str are inserted. If @a
|
|
* pos is beyond end of string, out_of_range is thrown. If the length
|
|
* of result exceeds max_size(), length_error is thrown. The value of
|
|
* the string doesn't change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(size_type __pos, size_type __n1, const _CharT* __s)
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->replace(__pos, __n1, __s, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Replace characters with multiple characters.
|
|
* @param pos Index of first character to replace.
|
|
* @param n1 Number of characters to be replaced.
|
|
* @param n2 Number of characters to insert.
|
|
* @param c Character to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::out_of_range If @a pos > size().
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [pos,pos + n1) from this string.
|
|
* In place, @a n2 copies of @a c are inserted. If @a pos is beyond
|
|
* end of string, out_of_range is thrown. If the length of result
|
|
* exceeds max_size(), length_error is thrown. The value of the string
|
|
* doesn't change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c)
|
|
{ return _M_replace_aux(_M_check(__pos, "basic_string::replace"),
|
|
_M_limit(__pos, __n1), __n2, __c); }
|
|
|
|
/**
|
|
* @brief Replace range of characters with string.
|
|
* @param i1 Iterator referencing start of range to replace.
|
|
* @param i2 Iterator referencing end of range to replace.
|
|
* @param str String value to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [i1,i2). In place, the value of
|
|
* @a str is inserted. If the length of result exceeds max_size(),
|
|
* length_error is thrown. The value of the string doesn't change if
|
|
* an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2, const basic_string& __str)
|
|
{ return this->replace(__i1, __i2, __str._M_data(), __str.size()); }
|
|
|
|
/**
|
|
* @brief Replace range of characters with C substring.
|
|
* @param i1 Iterator referencing start of range to replace.
|
|
* @param i2 Iterator referencing end of range to replace.
|
|
* @param s C string value to insert.
|
|
* @param n Number of characters from s to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [i1,i2). In place, the first @a
|
|
* n characters of @a s are inserted. If the length of result exceeds
|
|
* max_size(), length_error is thrown. The value of the string doesn't
|
|
* change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2, const _CharT* __s, size_type __n)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
return this->replace(__i1 - _M_ibegin(), __i2 - __i1, __s, __n);
|
|
}
|
|
|
|
/**
|
|
* @brief Replace range of characters with C string.
|
|
* @param i1 Iterator referencing start of range to replace.
|
|
* @param i2 Iterator referencing end of range to replace.
|
|
* @param s C string value to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [i1,i2). In place, the
|
|
* characters of @a s are inserted. If the length of result exceeds
|
|
* max_size(), length_error is thrown. The value of the string doesn't
|
|
* change if an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2, const _CharT* __s)
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->replace(__i1, __i2, __s, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Replace range of characters with multiple characters
|
|
* @param i1 Iterator referencing start of range to replace.
|
|
* @param i2 Iterator referencing end of range to replace.
|
|
* @param n Number of characters to insert.
|
|
* @param c Character to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [i1,i2). In place, @a n copies
|
|
* of @a c are inserted. If the length of result exceeds max_size(),
|
|
* length_error is thrown. The value of the string doesn't change if
|
|
* an error is thrown.
|
|
*/
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2, size_type __n, _CharT __c)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __c);
|
|
}
|
|
|
|
/**
|
|
* @brief Replace range of characters with range.
|
|
* @param i1 Iterator referencing start of range to replace.
|
|
* @param i2 Iterator referencing end of range to replace.
|
|
* @param k1 Iterator referencing start of range to insert.
|
|
* @param k2 Iterator referencing end of range to insert.
|
|
* @return Reference to this string.
|
|
* @throw std::length_error If new length exceeds @c max_size().
|
|
*
|
|
* Removes the characters in the range [i1,i2). In place, characters
|
|
* in the range [k1,k2) are inserted. If the length of result exceeds
|
|
* max_size(), length_error is thrown. The value of the string doesn't
|
|
* change if an error is thrown.
|
|
*/
|
|
template<class _InputIterator>
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2,
|
|
_InputIterator __k1, _InputIterator __k2)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
__glibcxx_requires_valid_range(__k1, __k2);
|
|
typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
|
|
return _M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral());
|
|
}
|
|
|
|
// Specializations for the common case of pointer and iterator:
|
|
// useful to avoid the overhead of temporary buffering in _M_replace.
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2, _CharT* __k1, _CharT* __k2)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
__glibcxx_requires_valid_range(__k1, __k2);
|
|
return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
|
|
__k1, __k2 - __k1);
|
|
}
|
|
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2,
|
|
const _CharT* __k1, const _CharT* __k2)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
__glibcxx_requires_valid_range(__k1, __k2);
|
|
return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
|
|
__k1, __k2 - __k1);
|
|
}
|
|
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2, iterator __k1, iterator __k2)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
__glibcxx_requires_valid_range(__k1, __k2);
|
|
return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
|
|
__k1.base(), __k2 - __k1);
|
|
}
|
|
|
|
basic_string&
|
|
replace(iterator __i1, iterator __i2,
|
|
const_iterator __k1, const_iterator __k2)
|
|
{
|
|
_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
|
|
&& __i2 <= _M_iend());
|
|
__glibcxx_requires_valid_range(__k1, __k2);
|
|
return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
|
|
__k1.base(), __k2 - __k1);
|
|
}
|
|
|
|
private:
|
|
template<class _Integer>
|
|
basic_string&
|
|
_M_replace_dispatch(iterator __i1, iterator __i2, _Integer __n,
|
|
_Integer __val, __true_type)
|
|
{ return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __val); }
|
|
|
|
template<class _InputIterator>
|
|
basic_string&
|
|
_M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
|
|
_InputIterator __k2, __false_type);
|
|
|
|
basic_string&
|
|
_M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
|
|
_CharT __c)
|
|
{
|
|
if (this->max_size() - (this->size() - __n1) < __n2)
|
|
__throw_length_error(__N("basic_string::_M_replace_aux"));
|
|
_M_mutate(__pos1, __n1, __n2);
|
|
if (__n2)
|
|
traits_type::assign(_M_data() + __pos1, __n2, __c);
|
|
return *this;
|
|
}
|
|
|
|
basic_string&
|
|
_M_replace_safe(size_type __pos1, size_type __n1, const _CharT* __s,
|
|
size_type __n2)
|
|
{
|
|
_M_mutate(__pos1, __n1, __n2);
|
|
if (__n2)
|
|
traits_type::copy(_M_data() + __pos1, __s, __n2);
|
|
return *this;
|
|
}
|
|
|
|
// _S_construct_aux is used to implement the 21.3.1 para 15 which
|
|
// requires special behaviour if _InIter is an integral type
|
|
template<class _InIterator>
|
|
static _CharT*
|
|
_S_construct_aux(_InIterator __beg, _InIterator __end,
|
|
const _Alloc& __a, __false_type)
|
|
{
|
|
typedef typename iterator_traits<_InIterator>::iterator_category _Tag;
|
|
return _S_construct(__beg, __end, __a, _Tag());
|
|
}
|
|
|
|
template<class _InIterator>
|
|
static _CharT*
|
|
_S_construct_aux(_InIterator __beg, _InIterator __end,
|
|
const _Alloc& __a, __true_type)
|
|
{ return _S_construct(static_cast<size_type>(__beg),
|
|
static_cast<value_type>(__end), __a); }
|
|
|
|
template<class _InIterator>
|
|
static _CharT*
|
|
_S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a)
|
|
{
|
|
typedef typename _Is_integer<_InIterator>::_Integral _Integral;
|
|
return _S_construct_aux(__beg, __end, __a, _Integral());
|
|
}
|
|
|
|
// For Input Iterators, used in istreambuf_iterators, etc.
|
|
template<class _InIterator>
|
|
static _CharT*
|
|
_S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a,
|
|
input_iterator_tag);
|
|
|
|
// For forward_iterators up to random_access_iterators, used for
|
|
// string::iterator, _CharT*, etc.
|
|
template<class _FwdIterator>
|
|
static _CharT*
|
|
_S_construct(_FwdIterator __beg, _FwdIterator __end, const _Alloc& __a,
|
|
forward_iterator_tag);
|
|
|
|
static _CharT*
|
|
_S_construct(size_type __req, _CharT __c, const _Alloc& __a);
|
|
|
|
public:
|
|
|
|
/**
|
|
* @brief Copy substring into C string.
|
|
* @param s C string to copy value into.
|
|
* @param n Number of characters to copy.
|
|
* @param pos Index of first character to copy.
|
|
* @return Number of characters actually copied
|
|
* @throw std::out_of_range If pos > size().
|
|
*
|
|
* Copies up to @a n characters starting at @a pos into the C string @a
|
|
* s. If @a pos is greater than size(), out_of_range is thrown.
|
|
*/
|
|
size_type
|
|
copy(_CharT* __s, size_type __n, size_type __pos = 0) const;
|
|
|
|
/**
|
|
* @brief Swap contents with another string.
|
|
* @param s String to swap with.
|
|
*
|
|
* Exchanges the contents of this string with that of @a s in constant
|
|
* time.
|
|
*/
|
|
void
|
|
swap(basic_string& __s);
|
|
|
|
// String operations:
|
|
/**
|
|
* @brief Return const pointer to null-terminated contents.
|
|
*
|
|
* This is a handle to internal data. Do not modify or dire things may
|
|
* happen.
|
|
*/
|
|
const _CharT*
|
|
c_str() const { return _M_data(); }
|
|
|
|
/**
|
|
* @brief Return const pointer to contents.
|
|
*
|
|
* This is a handle to internal data. Do not modify or dire things may
|
|
* happen.
|
|
*/
|
|
const _CharT*
|
|
data() const { return _M_data(); }
|
|
|
|
/**
|
|
* @brief Return copy of allocator used to construct this string.
|
|
*/
|
|
allocator_type
|
|
get_allocator() const { return _M_dataplus; }
|
|
|
|
/**
|
|
* @brief Find position of a C substring.
|
|
* @param s C string to locate.
|
|
* @param pos Index of character to search from.
|
|
* @param n Number of characters from @a s to search for.
|
|
* @return Index of start of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for the first @a n characters
|
|
* in @a s within this string. If found, returns the index where it
|
|
* begins. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find(const _CharT* __s, size_type __pos, size_type __n) const;
|
|
|
|
/**
|
|
* @brief Find position of a string.
|
|
* @param str String to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of start of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for value of @a str within
|
|
* this string. If found, returns the index where it begins. If not
|
|
* found, returns npos.
|
|
*/
|
|
size_type
|
|
find(const basic_string& __str, size_type __pos = 0) const
|
|
{ return this->find(__str.data(), __pos, __str.size()); }
|
|
|
|
/**
|
|
* @brief Find position of a C string.
|
|
* @param s C string to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of start of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for the value of @a s within
|
|
* this string. If found, returns the index where it begins. If not
|
|
* found, returns npos.
|
|
*/
|
|
size_type
|
|
find(const _CharT* __s, size_type __pos = 0) const
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->find(__s, __pos, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Find position of a character.
|
|
* @param c Character to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for @a c within this string.
|
|
* If found, returns the index where it was found. If not found,
|
|
* returns npos.
|
|
*/
|
|
size_type
|
|
find(_CharT __c, size_type __pos = 0) const;
|
|
|
|
/**
|
|
* @brief Find last position of a string.
|
|
* @param str String to locate.
|
|
* @param pos Index of character to search back from (default end).
|
|
* @return Index of start of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for value of @a str within
|
|
* this string. If found, returns the index where it begins. If not
|
|
* found, returns npos.
|
|
*/
|
|
size_type
|
|
rfind(const basic_string& __str, size_type __pos = npos) const
|
|
{ return this->rfind(__str.data(), __pos, __str.size()); }
|
|
|
|
/**
|
|
* @brief Find last position of a C substring.
|
|
* @param s C string to locate.
|
|
* @param pos Index of character to search back from.
|
|
* @param n Number of characters from s to search for.
|
|
* @return Index of start of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for the first @a n
|
|
* characters in @a s within this string. If found, returns the index
|
|
* where it begins. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
rfind(const _CharT* __s, size_type __pos, size_type __n) const;
|
|
|
|
/**
|
|
* @brief Find last position of a C string.
|
|
* @param s C string to locate.
|
|
* @param pos Index of character to start search at (default 0).
|
|
* @return Index of start of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for the value of @a s within
|
|
* this string. If found, returns the index where it begins. If not
|
|
* found, returns npos.
|
|
*/
|
|
size_type
|
|
rfind(const _CharT* __s, size_type __pos = npos) const
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->rfind(__s, __pos, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Find last position of a character.
|
|
* @param c Character to locate.
|
|
* @param pos Index of character to search back from (default 0).
|
|
* @return Index of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for @a c within this string.
|
|
* If found, returns the index where it was found. If not found,
|
|
* returns npos.
|
|
*/
|
|
size_type
|
|
rfind(_CharT __c, size_type __pos = npos) const;
|
|
|
|
/**
|
|
* @brief Find position of a character of string.
|
|
* @param str String containing characters to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for one of the characters of
|
|
* @a str within this string. If found, returns the index where it was
|
|
* found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_of(const basic_string& __str, size_type __pos = 0) const
|
|
{ return this->find_first_of(__str.data(), __pos, __str.size()); }
|
|
|
|
/**
|
|
* @brief Find position of a character of C substring.
|
|
* @param s String containing characters to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @param n Number of characters from s to search for.
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for one of the first @a n
|
|
* characters of @a s within this string. If found, returns the index
|
|
* where it was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_of(const _CharT* __s, size_type __pos, size_type __n) const;
|
|
|
|
/**
|
|
* @brief Find position of a character of C string.
|
|
* @param s String containing characters to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for one of the characters of
|
|
* @a s within this string. If found, returns the index where it was
|
|
* found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_of(const _CharT* __s, size_type __pos = 0) const
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->find_first_of(__s, __pos, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Find position of a character.
|
|
* @param c Character to locate.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for the character @a c within
|
|
* this string. If found, returns the index where it was found. If
|
|
* not found, returns npos.
|
|
*
|
|
* Note: equivalent to find(c, pos).
|
|
*/
|
|
size_type
|
|
find_first_of(_CharT __c, size_type __pos = 0) const
|
|
{ return this->find(__c, __pos); }
|
|
|
|
/**
|
|
* @brief Find last position of a character of string.
|
|
* @param str String containing characters to locate.
|
|
* @param pos Index of character to search back from (default end).
|
|
* @return Index of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for one of the characters of
|
|
* @a str within this string. If found, returns the index where it was
|
|
* found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_last_of(const basic_string& __str, size_type __pos = npos) const
|
|
{ return this->find_last_of(__str.data(), __pos, __str.size()); }
|
|
|
|
/**
|
|
* @brief Find last position of a character of C substring.
|
|
* @param s C string containing characters to locate.
|
|
* @param pos Index of character to search back from (default end).
|
|
* @param n Number of characters from s to search for.
|
|
* @return Index of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for one of the first @a n
|
|
* characters of @a s within this string. If found, returns the index
|
|
* where it was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_last_of(const _CharT* __s, size_type __pos, size_type __n) const;
|
|
|
|
/**
|
|
* @brief Find last position of a character of C string.
|
|
* @param s C string containing characters to locate.
|
|
* @param pos Index of character to search back from (default end).
|
|
* @return Index of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for one of the characters of
|
|
* @a s within this string. If found, returns the index where it was
|
|
* found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_last_of(const _CharT* __s, size_type __pos = npos) const
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->find_last_of(__s, __pos, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Find last position of a character.
|
|
* @param c Character to locate.
|
|
* @param pos Index of character to search back from (default 0).
|
|
* @return Index of last occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for @a c within this string.
|
|
* If found, returns the index where it was found. If not found,
|
|
* returns npos.
|
|
*
|
|
* Note: equivalent to rfind(c, pos).
|
|
*/
|
|
size_type
|
|
find_last_of(_CharT __c, size_type __pos = npos) const
|
|
{ return this->rfind(__c, __pos); }
|
|
|
|
/**
|
|
* @brief Find position of a character not in string.
|
|
* @param str String containing characters to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for a character not contained
|
|
* in @a str within this string. If found, returns the index where it
|
|
* was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_not_of(const basic_string& __str, size_type __pos = 0) const
|
|
{ return this->find_first_not_of(__str.data(), __pos, __str.size()); }
|
|
|
|
/**
|
|
* @brief Find position of a character not in C substring.
|
|
* @param s C string containing characters to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @param n Number of characters from s to consider.
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for a character not contained
|
|
* in the first @a n characters of @a s within this string. If found,
|
|
* returns the index where it was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_not_of(const _CharT* __s, size_type __pos,
|
|
size_type __n) const;
|
|
|
|
/**
|
|
* @brief Find position of a character not in C string.
|
|
* @param s C string containing characters to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for a character not contained
|
|
* in @a s within this string. If found, returns the index where it
|
|
* was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_not_of(const _CharT* __s, size_type __pos = 0) const
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->find_first_not_of(__s, __pos, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Find position of a different character.
|
|
* @param c Character to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches forward for a character other than @a c
|
|
* within this string. If found, returns the index where it was found.
|
|
* If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_first_not_of(_CharT __c, size_type __pos = 0) const;
|
|
|
|
/**
|
|
* @brief Find last position of a character not in string.
|
|
* @param str String containing characters to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for a character not
|
|
* contained in @a str within this string. If found, returns the index
|
|
* where it was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_last_not_of(const basic_string& __str, size_type __pos = npos) const
|
|
{ return this->find_last_not_of(__str.data(), __pos, __str.size()); }
|
|
|
|
/**
|
|
* @brief Find last position of a character not in C substring.
|
|
* @param s C string containing characters to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @param n Number of characters from s to consider.
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for a character not
|
|
* contained in the first @a n characters of @a s within this string.
|
|
* If found, returns the index where it was found. If not found,
|
|
* returns npos.
|
|
*/
|
|
size_type
|
|
find_last_not_of(const _CharT* __s, size_type __pos,
|
|
size_type __n) const;
|
|
/**
|
|
* @brief Find position of a character not in C string.
|
|
* @param s C string containing characters to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for a character not
|
|
* contained in @a s within this string. If found, returns the index
|
|
* where it was found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_last_not_of(const _CharT* __s, size_type __pos = npos) const
|
|
{
|
|
__glibcxx_requires_string(__s);
|
|
return this->find_last_not_of(__s, __pos, traits_type::length(__s));
|
|
}
|
|
|
|
/**
|
|
* @brief Find last position of a different character.
|
|
* @param c Character to avoid.
|
|
* @param pos Index of character to search from (default 0).
|
|
* @return Index of first occurrence.
|
|
*
|
|
* Starting from @a pos, searches backward for a character other than
|
|
* @a c within this string. If found, returns the index where it was
|
|
* found. If not found, returns npos.
|
|
*/
|
|
size_type
|
|
find_last_not_of(_CharT __c, size_type __pos = npos) const;
|
|
|
|
/**
|
|
* @brief Get a substring.
|
|
* @param pos Index of first character (default 0).
|
|
* @param n Number of characters in substring (default remainder).
|
|
* @return The new string.
|
|
* @throw std::out_of_range If pos > size().
|
|
*
|
|
* Construct and return a new string using the @a n characters starting
|
|
* at @a pos. If the string is too short, use the remainder of the
|
|
* characters. If @a pos is beyond the end of the string, out_of_range
|
|
* is thrown.
|
|
*/
|
|
basic_string
|
|
substr(size_type __pos = 0, size_type __n = npos) const
|
|
{ return basic_string(*this,
|
|
_M_check(__pos, "basic_string::substr"), __n); }
|
|
|
|
/**
|
|
* @brief Compare to a string.
|
|
* @param str String to compare against.
|
|
* @return Integer < 0, 0, or > 0.
|
|
*
|
|
* Returns an integer < 0 if this string is ordered before @a str, 0 if
|
|
* their values are equivalent, or > 0 if this string is ordered after
|
|
* @a str. If the lengths of @a str and this string are different, the
|
|
* shorter one is ordered first. If they are the same, returns the
|
|
* result of traits::compare(data(),str.data(),size());
|
|
*/
|
|
int
|
|
compare(const basic_string& __str) const
|
|
{
|
|
const size_type __size = this->size();
|
|
const size_type __osize = __str.size();
|
|
const size_type __len = std::min(__size, __osize);
|
|
|
|
int __r = traits_type::compare(_M_data(), __str.data(), __len);
|
|
if (!__r)
|
|
__r = __size - __osize;
|
|
return __r;
|
|
}
|
|
|
|
/**
|
|
* @brief Compare substring to a string.
|
|
* @param pos Index of first character of substring.
|
|
* @param n Number of characters in substring.
|
|
* @param str String to compare against.
|
|
* @return Integer < 0, 0, or > 0.
|
|
*
|
|
* Form the substring of this string from the @a n characters starting
|
|
* at @a pos. Returns an integer < 0 if the substring is ordered
|
|
* before @a str, 0 if their values are equivalent, or > 0 if the
|
|
* substring is ordered after @a str. If the lengths @a of str and the
|
|
* substring are different, the shorter one is ordered first. If they
|
|
* are the same, returns the result of
|
|
* traits::compare(substring.data(),str.data(),size());
|
|
*/
|
|
int
|
|
compare(size_type __pos, size_type __n, const basic_string& __str) const;
|
|
|
|
/**
|
|
* @brief Compare substring to a substring.
|
|
* @param pos1 Index of first character of substring.
|
|
* @param n1 Number of characters in substring.
|
|
* @param str String to compare against.
|
|
* @param pos2 Index of first character of substring of str.
|
|
* @param n2 Number of characters in substring of str.
|
|
* @return Integer < 0, 0, or > 0.
|
|
*
|
|
* Form the substring of this string from the @a n1 characters starting
|
|
* at @a pos1. Form the substring of @a str from the @a n2 characters
|
|
* starting at @a pos2. Returns an integer < 0 if this substring is
|
|
* ordered before the substring of @a str, 0 if their values are
|
|
* equivalent, or > 0 if this substring is ordered after the substring
|
|
* of @a str. If the lengths of the substring of @a str and this
|
|
* substring are different, the shorter one is ordered first. If they
|
|
* are the same, returns the result of
|
|
* traits::compare(substring.data(),str.substr(pos2,n2).data(),size());
|
|
*/
|
|
int
|
|
compare(size_type __pos1, size_type __n1, const basic_string& __str,
|
|
size_type __pos2, size_type __n2) const;
|
|
|
|
/**
|
|
* @brief Compare to a C string.
|
|
* @param s C string to compare against.
|
|
* @return Integer < 0, 0, or > 0.
|
|
*
|
|
* Returns an integer < 0 if this string is ordered before @a s, 0 if
|
|
* their values are equivalent, or > 0 if this string is ordered after
|
|
* @a s. If the lengths of @a s and this string are different, the
|
|
* shorter one is ordered first. If they are the same, returns the
|
|
* result of traits::compare(data(),s,size());
|
|
*/
|
|
int
|
|
compare(const _CharT* __s) const;
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 5 String::compare specification questionable
|
|
/**
|
|
* @brief Compare substring to a C string.
|
|
* @param pos Index of first character of substring.
|
|
* @param n1 Number of characters in substring.
|
|
* @param s C string to compare against.
|
|
* @return Integer < 0, 0, or > 0.
|
|
*
|
|
* Form the substring of this string from the @a n1 characters starting
|
|
* at @a pos. Returns an integer < 0 if the substring is ordered
|
|
* before @a s, 0 if their values are equivalent, or > 0 if the
|
|
* substring is ordered after @a s. If the lengths of @a s and the
|
|
* substring are different, the shorter one is ordered first. If they
|
|
* are the same, returns the result of
|
|
* traits::compare(substring.data(),s,size());
|
|
*/
|
|
int
|
|
compare(size_type __pos, size_type __n1, const _CharT* __s) const;
|
|
|
|
/**
|
|
* @brief Compare substring against a character array.
|
|
* @param pos1 Index of first character of substring.
|
|
* @param n1 Number of characters in substring.
|
|
* @param s character array to compare against.
|
|
* @param n2 Number of characters of s.
|
|
* @return Integer < 0, 0, or > 0.
|
|
*
|
|
* Form the substring of this string from the @a n1 characters starting
|
|
* at @a pos1. Form a string from the first @a n2 characters of @a s.
|
|
* Returns an integer < 0 if this substring is ordered before the string
|
|
* from @a s, 0 if their values are equivalent, or > 0 if this substring
|
|
* is ordered after the string from @a s. If the lengths of this
|
|
* substring and @a n2 are different, the shorter one is ordered first.
|
|
* If they are the same, returns the result of
|
|
* traits::compare(substring.data(),s,size());
|
|
*
|
|
* NB: s must have at least n2 characters, '\0' has no special
|
|
* meaning.
|
|
*/
|
|
int
|
|
compare(size_type __pos, size_type __n1, const _CharT* __s,
|
|
size_type __n2) const;
|
|
};
|
|
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline basic_string<_CharT, _Traits, _Alloc>::
|
|
basic_string()
|
|
: _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc()) { }
|
|
|
|
// operator+
|
|
/**
|
|
* @brief Concatenate two strings.
|
|
* @param lhs First string.
|
|
* @param rhs Last string.
|
|
* @return New string with value of @a lhs followed by @a rhs.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>
|
|
operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{
|
|
basic_string<_CharT, _Traits, _Alloc> __str(__lhs);
|
|
__str.append(__rhs);
|
|
return __str;
|
|
}
|
|
|
|
/**
|
|
* @brief Concatenate C string and string.
|
|
* @param lhs First string.
|
|
* @param rhs Last string.
|
|
* @return New string with value of @a lhs followed by @a rhs.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT,_Traits,_Alloc>
|
|
operator+(const _CharT* __lhs,
|
|
const basic_string<_CharT,_Traits,_Alloc>& __rhs);
|
|
|
|
/**
|
|
* @brief Concatenate character and string.
|
|
* @param lhs First string.
|
|
* @param rhs Last string.
|
|
* @return New string with @a lhs followed by @a rhs.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT,_Traits,_Alloc>
|
|
operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs);
|
|
|
|
/**
|
|
* @brief Concatenate string and C string.
|
|
* @param lhs First string.
|
|
* @param rhs Last string.
|
|
* @return New string with @a lhs followed by @a rhs.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline basic_string<_CharT, _Traits, _Alloc>
|
|
operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{
|
|
basic_string<_CharT, _Traits, _Alloc> __str(__lhs);
|
|
__str.append(__rhs);
|
|
return __str;
|
|
}
|
|
|
|
/**
|
|
* @brief Concatenate string and character.
|
|
* @param lhs First string.
|
|
* @param rhs Last string.
|
|
* @return New string with @a lhs followed by @a rhs.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline basic_string<_CharT, _Traits, _Alloc>
|
|
operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
|
|
{
|
|
typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
|
|
typedef typename __string_type::size_type __size_type;
|
|
__string_type __str(__lhs);
|
|
__str.append(__size_type(1), __rhs);
|
|
return __str;
|
|
}
|
|
|
|
// operator ==
|
|
/**
|
|
* @brief Test equivalence of two strings.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
* @return True if @a lhs.compare(@a rhs) == 0. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __lhs.compare(__rhs) == 0; }
|
|
|
|
/**
|
|
* @brief Test equivalence of C string and string.
|
|
* @param lhs C string.
|
|
* @param rhs String.
|
|
* @return True if @a rhs.compare(@a lhs) == 0. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator==(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) == 0; }
|
|
|
|
/**
|
|
* @brief Test equivalence of string and C string.
|
|
* @param lhs String.
|
|
* @param rhs C string.
|
|
* @return True if @a lhs.compare(@a rhs) == 0. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator==(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{ return __lhs.compare(__rhs) == 0; }
|
|
|
|
// operator !=
|
|
/**
|
|
* @brief Test difference of two strings.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
* @return True if @a lhs.compare(@a rhs) != 0. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) != 0; }
|
|
|
|
/**
|
|
* @brief Test difference of C string and string.
|
|
* @param lhs C string.
|
|
* @param rhs String.
|
|
* @return True if @a rhs.compare(@a lhs) != 0. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator!=(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) != 0; }
|
|
|
|
/**
|
|
* @brief Test difference of string and C string.
|
|
* @param lhs String.
|
|
* @param rhs C string.
|
|
* @return True if @a lhs.compare(@a rhs) != 0. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{ return __lhs.compare(__rhs) != 0; }
|
|
|
|
// operator <
|
|
/**
|
|
* @brief Test if string precedes string.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
* @return True if @a lhs precedes @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __lhs.compare(__rhs) < 0; }
|
|
|
|
/**
|
|
* @brief Test if string precedes C string.
|
|
* @param lhs String.
|
|
* @param rhs C string.
|
|
* @return True if @a lhs precedes @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator<(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{ return __lhs.compare(__rhs) < 0; }
|
|
|
|
/**
|
|
* @brief Test if C string precedes string.
|
|
* @param lhs C string.
|
|
* @param rhs String.
|
|
* @return True if @a lhs precedes @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator<(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) > 0; }
|
|
|
|
// operator >
|
|
/**
|
|
* @brief Test if string follows string.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
* @return True if @a lhs follows @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __lhs.compare(__rhs) > 0; }
|
|
|
|
/**
|
|
* @brief Test if string follows C string.
|
|
* @param lhs String.
|
|
* @param rhs C string.
|
|
* @return True if @a lhs follows @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{ return __lhs.compare(__rhs) > 0; }
|
|
|
|
/**
|
|
* @brief Test if C string follows string.
|
|
* @param lhs C string.
|
|
* @param rhs String.
|
|
* @return True if @a lhs follows @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator>(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) < 0; }
|
|
|
|
// operator <=
|
|
/**
|
|
* @brief Test if string doesn't follow string.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
* @return True if @a lhs doesn't follow @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __lhs.compare(__rhs) <= 0; }
|
|
|
|
/**
|
|
* @brief Test if string doesn't follow C string.
|
|
* @param lhs String.
|
|
* @param rhs C string.
|
|
* @return True if @a lhs doesn't follow @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{ return __lhs.compare(__rhs) <= 0; }
|
|
|
|
/**
|
|
* @brief Test if C string doesn't follow string.
|
|
* @param lhs C string.
|
|
* @param rhs String.
|
|
* @return True if @a lhs doesn't follow @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator<=(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) >= 0; }
|
|
|
|
// operator >=
|
|
/**
|
|
* @brief Test if string doesn't precede string.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
* @return True if @a lhs doesn't precede @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __lhs.compare(__rhs) >= 0; }
|
|
|
|
/**
|
|
* @brief Test if string doesn't precede C string.
|
|
* @param lhs String.
|
|
* @param rhs C string.
|
|
* @return True if @a lhs doesn't precede @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator>=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
const _CharT* __rhs)
|
|
{ return __lhs.compare(__rhs) >= 0; }
|
|
|
|
/**
|
|
* @brief Test if C string doesn't precede string.
|
|
* @param lhs C string.
|
|
* @param rhs String.
|
|
* @return True if @a lhs doesn't precede @a rhs. False otherwise.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline bool
|
|
operator>=(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ return __rhs.compare(__lhs) <= 0; }
|
|
|
|
/**
|
|
* @brief Swap contents of two strings.
|
|
* @param lhs First string.
|
|
* @param rhs Second string.
|
|
*
|
|
* Exchanges the contents of @a lhs and @a rhs in constant time.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline void
|
|
swap(basic_string<_CharT, _Traits, _Alloc>& __lhs,
|
|
basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{ __lhs.swap(__rhs); }
|
|
|
|
/**
|
|
* @brief Read stream into a string.
|
|
* @param is Input stream.
|
|
* @param str Buffer to store into.
|
|
* @return Reference to the input stream.
|
|
*
|
|
* Stores characters from @a is into @a str until whitespace is found, the
|
|
* end of the stream is encountered, or str.max_size() is reached. If
|
|
* is.width() is non-zero, that is the limit on the number of characters
|
|
* stored into @a str. Any previous contents of @a str are erased.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_istream<_CharT, _Traits>&
|
|
operator>>(basic_istream<_CharT, _Traits>& __is,
|
|
basic_string<_CharT, _Traits, _Alloc>& __str);
|
|
|
|
/**
|
|
* @brief Write string to a stream.
|
|
* @param os Output stream.
|
|
* @param str String to write out.
|
|
* @return Reference to the output stream.
|
|
*
|
|
* Output characters of @a str into os following the same rules as for
|
|
* writing a C string.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_ostream<_CharT, _Traits>&
|
|
operator<<(basic_ostream<_CharT, _Traits>& __os,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __str);
|
|
|
|
/**
|
|
* @brief Read a line from stream into a string.
|
|
* @param is Input stream.
|
|
* @param str Buffer to store into.
|
|
* @param delim Character marking end of line.
|
|
* @return Reference to the input stream.
|
|
*
|
|
* Stores characters from @a is into @a str until @a delim is found, the
|
|
* end of the stream is encountered, or str.max_size() is reached. If
|
|
* is.width() is non-zero, that is the limit on the number of characters
|
|
* stored into @a str. Any previous contents of @a str are erased. If @a
|
|
* delim was encountered, it is extracted but not stored into @a str.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_istream<_CharT,_Traits>&
|
|
getline(basic_istream<_CharT, _Traits>& __is,
|
|
basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim);
|
|
|
|
/**
|
|
* @brief Read a line from stream into a string.
|
|
* @param is Input stream.
|
|
* @param str Buffer to store into.
|
|
* @return Reference to the input stream.
|
|
*
|
|
* Stores characters from is into @a str until '\n' is found, the end of
|
|
* the stream is encountered, or str.max_size() is reached. If is.width()
|
|
* is non-zero, that is the limit on the number of characters stored into
|
|
* @a str. Any previous contents of @a str are erased. If end of line was
|
|
* encountered, it is extracted but not stored into @a str.
|
|
*/
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
inline basic_istream<_CharT,_Traits>&
|
|
getline(basic_istream<_CharT, _Traits>& __is,
|
|
basic_string<_CharT, _Traits, _Alloc>& __str);
|
|
} // namespace std
|
|
|
|
#endif /* _BASIC_STRING_H */
|