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i_I|+ ? // SGI's rope class implementation -*- C++ -*-
// Copyright (C) 2001-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// .
/*
* Copyright (c) 1997
* Silicon Graphics Computer Systems, Inc.
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Silicon Graphics makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*/
/** @file ropeimpl.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{ext/rope}
*/
#include
#include
#include
#include // For copy_n and lexicographical_compare_3way
#include // For uninitialized_copy_n
#include // For power
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
using std::size_t;
using std::printf;
using std::basic_ostream;
using std::__throw_length_error;
using std::_Destroy;
using std::__uninitialized_fill_n_a;
// Set buf_start, buf_end, and buf_ptr appropriately, filling tmp_buf
// if necessary. Assumes _M_path_end[leaf_index] and leaf_pos are correct.
// Results in a valid buf_ptr if the iterator can be legitimately
// dereferenced.
template
void
_Rope_iterator_base<_CharT, _Alloc>::
_S_setbuf(_Rope_iterator_base<_CharT, _Alloc>& __x)
{
const _RopeRep* __leaf = __x._M_path_end[__x._M_leaf_index];
size_t __leaf_pos = __x._M_leaf_pos;
size_t __pos = __x._M_current_pos;
switch(__leaf->_M_tag)
{
case __detail::_S_leaf:
__x._M_buf_start = ((_Rope_RopeLeaf<_CharT, _Alloc>*)__leaf)->_M_data;
__x._M_buf_ptr = __x._M_buf_start + (__pos - __leaf_pos);
__x._M_buf_end = __x._M_buf_start + __leaf->_M_size;
break;
case __detail::_S_function:
case __detail::_S_substringfn:
{
size_t __len = _S_iterator_buf_len;
size_t __buf_start_pos = __leaf_pos;
size_t __leaf_end = __leaf_pos + __leaf->_M_size;
char_producer<_CharT>* __fn = ((_Rope_RopeFunction<_CharT,
_Alloc>*)__leaf)->_M_fn;
if (__buf_start_pos + __len <= __pos)
{
__buf_start_pos = __pos - __len / 4;
if (__buf_start_pos + __len > __leaf_end)
__buf_start_pos = __leaf_end - __len;
}
if (__buf_start_pos + __len > __leaf_end)
__le