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42526146 PE |
1 | // SGI's rope class implementation -*- C++ -*- |
2 | ||
8fbc5ae7 | 3 | // Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc. |
42526146 PE |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
8 | // Free Software Foundation; either version 2, or (at your option) | |
9 | // any later version. | |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
17 | // with this library; see the file COPYING. If not, write to the Free | |
18 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
19 | // USA. | |
20 | ||
21 | // As a special exception, you may use this file as part of a free software | |
22 | // library without restriction. Specifically, if other files instantiate | |
23 | // templates or use macros or inline functions from this file, or you compile | |
24 | // this file and link it with other files to produce an executable, this | |
25 | // file does not by itself cause the resulting executable to be covered by | |
26 | // the GNU General Public License. This exception does not however | |
27 | // invalidate any other reasons why the executable file might be covered by | |
28 | // the GNU General Public License. | |
29 | ||
725dc051 BK |
30 | /* |
31 | * Copyright (c) 1997 | |
32 | * Silicon Graphics Computer Systems, Inc. | |
33 | * | |
34 | * Permission to use, copy, modify, distribute and sell this software | |
35 | * and its documentation for any purpose is hereby granted without fee, | |
36 | * provided that the above copyright notice appear in all copies and | |
37 | * that both that copyright notice and this permission notice appear | |
38 | * in supporting documentation. Silicon Graphics makes no | |
39 | * representations about the suitability of this software for any | |
40 | * purpose. It is provided "as is" without express or implied warranty. | |
41 | */ | |
42 | ||
1b4a6975 PE |
43 | /** @file ropeimpl.h |
44 | * This is an internal header file, included by other library headers. | |
45 | * You should not attempt to use it directly. | |
725dc051 BK |
46 | */ |
47 | ||
54c1bf78 BK |
48 | #include <cstdio> |
49 | #include <iostream> | |
1b4a6975 | 50 | #include <bits/functexcept.h> |
725dc051 | 51 | |
f53d0ff1 PC |
52 | #include <ext/algorithm> // For copy_n and lexicographical_compare_3way |
53 | #include <ext/memory> // For uninitialized_copy_n | |
01b0d4b8 | 54 | #include <ext/numeric> // For power |
f53d0ff1 | 55 | |
e538847e | 56 | namespace __gnu_cxx |
d53d7f6e | 57 | { |
e538847e PC |
58 | using std::size_t; |
59 | using std::printf; | |
60 | using std::basic_ostream; | |
61 | using std::__throw_length_error; | |
62 | using std::__alloc; | |
63 | using std::_Destroy; | |
64 | using std::uninitialized_fill_n; | |
725dc051 BK |
65 | |
66 | // Set buf_start, buf_end, and buf_ptr appropriately, filling tmp_buf | |
67 | // if necessary. Assumes _M_path_end[leaf_index] and leaf_pos are correct. | |
68 | // Results in a valid buf_ptr if the iterator can be legitimately | |
69 | // dereferenced. | |
70 | template <class _CharT, class _Alloc> | |
71 | void _Rope_iterator_base<_CharT,_Alloc>::_S_setbuf( | |
72 | _Rope_iterator_base<_CharT,_Alloc>& __x) | |
73 | { | |
74 | const _RopeRep* __leaf = __x._M_path_end[__x._M_leaf_index]; | |
75 | size_t __leaf_pos = __x._M_leaf_pos; | |
76 | size_t __pos = __x._M_current_pos; | |
77 | ||
78 | switch(__leaf->_M_tag) { | |
79 | case _RopeRep::_S_leaf: | |
80 | __x._M_buf_start = | |
81 | ((_Rope_RopeLeaf<_CharT,_Alloc>*)__leaf)->_M_data; | |
82 | __x._M_buf_ptr = __x._M_buf_start + (__pos - __leaf_pos); | |
83 | __x._M_buf_end = __x._M_buf_start + __leaf->_M_size; | |
84 | break; | |
85 | case _RopeRep::_S_function: | |
86 | case _RopeRep::_S_substringfn: | |
87 | { | |
88 | size_t __len = _S_iterator_buf_len; | |
89 | size_t __buf_start_pos = __leaf_pos; | |
90 | size_t __leaf_end = __leaf_pos + __leaf->_M_size; | |
91 | char_producer<_CharT>* __fn = | |
92 | ((_Rope_RopeFunction<_CharT,_Alloc>*)__leaf)->_M_fn; | |
93 | ||
94 | if (__buf_start_pos + __len <= __pos) { | |
95 | __buf_start_pos = __pos - __len/4; | |
96 | if (__buf_start_pos + __len > __leaf_end) { | |
97 | __buf_start_pos = __leaf_end - __len; | |
98 | } | |
99 | } | |
100 | if (__buf_start_pos + __len > __leaf_end) { | |
101 | __len = __leaf_end - __buf_start_pos; | |
102 | } | |
103 | (*__fn)(__buf_start_pos - __leaf_pos, __len, __x._M_tmp_buf); | |
104 | __x._M_buf_ptr = __x._M_tmp_buf + (__pos - __buf_start_pos); | |
105 | __x._M_buf_start = __x._M_tmp_buf; | |
106 | __x._M_buf_end = __x._M_tmp_buf + __len; | |
107 | } | |
108 | break; | |
109 | default: | |
322821b9 | 110 | break; |
725dc051 BK |
111 | } |
112 | } | |
113 | ||
114 | // Set path and buffer inside a rope iterator. We assume that | |
115 | // pos and root are already set. | |
116 | template <class _CharT, class _Alloc> | |
117 | void _Rope_iterator_base<_CharT,_Alloc>::_S_setcache | |
118 | (_Rope_iterator_base<_CharT,_Alloc>& __x) | |
119 | { | |
120 | const _RopeRep* __path[_RopeRep::_S_max_rope_depth+1]; | |
121 | const _RopeRep* __curr_rope; | |
122 | int __curr_depth = -1; /* index into path */ | |
123 | size_t __curr_start_pos = 0; | |
124 | size_t __pos = __x._M_current_pos; | |
125 | unsigned char __dirns = 0; // Bit vector marking right turns in the path | |
126 | ||
725dc051 BK |
127 | if (__pos >= __x._M_root->_M_size) { |
128 | __x._M_buf_ptr = 0; | |
129 | return; | |
130 | } | |
131 | __curr_rope = __x._M_root; | |
132 | if (0 != __curr_rope->_M_c_string) { | |
133 | /* Treat the root as a leaf. */ | |
134 | __x._M_buf_start = __curr_rope->_M_c_string; | |
135 | __x._M_buf_end = __curr_rope->_M_c_string + __curr_rope->_M_size; | |
136 | __x._M_buf_ptr = __curr_rope->_M_c_string + __pos; | |
137 | __x._M_path_end[0] = __curr_rope; | |
138 | __x._M_leaf_index = 0; | |
139 | __x._M_leaf_pos = 0; | |
140 | return; | |
141 | } | |
142 | for(;;) { | |
143 | ++__curr_depth; | |
725dc051 BK |
144 | __path[__curr_depth] = __curr_rope; |
145 | switch(__curr_rope->_M_tag) { | |
146 | case _RopeRep::_S_leaf: | |
147 | case _RopeRep::_S_function: | |
148 | case _RopeRep::_S_substringfn: | |
149 | __x._M_leaf_pos = __curr_start_pos; | |
150 | goto done; | |
151 | case _RopeRep::_S_concat: | |
152 | { | |
153 | _Rope_RopeConcatenation<_CharT,_Alloc>* __c = | |
154 | (_Rope_RopeConcatenation<_CharT,_Alloc>*)__curr_rope; | |
155 | _RopeRep* __left = __c->_M_left; | |
156 | size_t __left_len = __left->_M_size; | |
157 | ||
158 | __dirns <<= 1; | |
159 | if (__pos >= __curr_start_pos + __left_len) { | |
160 | __dirns |= 1; | |
161 | __curr_rope = __c->_M_right; | |
162 | __curr_start_pos += __left_len; | |
163 | } else { | |
164 | __curr_rope = __left; | |
165 | } | |
166 | } | |
167 | break; | |
168 | } | |
169 | } | |
170 | done: | |
171 | // Copy last section of path into _M_path_end. | |
172 | { | |
173 | int __i = -1; | |
174 | int __j = __curr_depth + 1 - _S_path_cache_len; | |
175 | ||
176 | if (__j < 0) __j = 0; | |
177 | while (__j <= __curr_depth) { | |
178 | __x._M_path_end[++__i] = __path[__j++]; | |
179 | } | |
180 | __x._M_leaf_index = __i; | |
181 | } | |
182 | __x._M_path_directions = __dirns; | |
183 | _S_setbuf(__x); | |
184 | } | |
185 | ||
186 | // Specialized version of the above. Assumes that | |
187 | // the path cache is valid for the previous position. | |
188 | template <class _CharT, class _Alloc> | |
189 | void _Rope_iterator_base<_CharT,_Alloc>::_S_setcache_for_incr | |
190 | (_Rope_iterator_base<_CharT,_Alloc>& __x) | |
191 | { | |
192 | int __current_index = __x._M_leaf_index; | |
193 | const _RopeRep* __current_node = __x._M_path_end[__current_index]; | |
194 | size_t __len = __current_node->_M_size; | |
195 | size_t __node_start_pos = __x._M_leaf_pos; | |
196 | unsigned char __dirns = __x._M_path_directions; | |
197 | _Rope_RopeConcatenation<_CharT,_Alloc>* __c; | |
198 | ||
725dc051 BK |
199 | if (__x._M_current_pos - __node_start_pos < __len) { |
200 | /* More stuff in this leaf, we just didn't cache it. */ | |
201 | _S_setbuf(__x); | |
202 | return; | |
203 | } | |
725dc051 BK |
204 | // node_start_pos is starting position of last_node. |
205 | while (--__current_index >= 0) { | |
206 | if (!(__dirns & 1) /* Path turned left */) | |
207 | break; | |
208 | __current_node = __x._M_path_end[__current_index]; | |
209 | __c = (_Rope_RopeConcatenation<_CharT,_Alloc>*)__current_node; | |
210 | // Otherwise we were in the right child. Thus we should pop | |
211 | // the concatenation node. | |
212 | __node_start_pos -= __c->_M_left->_M_size; | |
213 | __dirns >>= 1; | |
214 | } | |
215 | if (__current_index < 0) { | |
216 | // We underflowed the cache. Punt. | |
217 | _S_setcache(__x); | |
218 | return; | |
219 | } | |
220 | __current_node = __x._M_path_end[__current_index]; | |
221 | __c = (_Rope_RopeConcatenation<_CharT,_Alloc>*)__current_node; | |
222 | // current_node is a concatenation node. We are positioned on the first | |
223 | // character in its right child. | |
224 | // node_start_pos is starting position of current_node. | |
225 | __node_start_pos += __c->_M_left->_M_size; | |
226 | __current_node = __c->_M_right; | |
227 | __x._M_path_end[++__current_index] = __current_node; | |
228 | __dirns |= 1; | |
229 | while (_RopeRep::_S_concat == __current_node->_M_tag) { | |
230 | ++__current_index; | |
231 | if (_S_path_cache_len == __current_index) { | |
232 | int __i; | |
233 | for (__i = 0; __i < _S_path_cache_len-1; __i++) { | |
234 | __x._M_path_end[__i] = __x._M_path_end[__i+1]; | |
235 | } | |
236 | --__current_index; | |
237 | } | |
238 | __current_node = | |
239 | ((_Rope_RopeConcatenation<_CharT,_Alloc>*)__current_node)->_M_left; | |
240 | __x._M_path_end[__current_index] = __current_node; | |
241 | __dirns <<= 1; | |
242 | // node_start_pos is unchanged. | |
243 | } | |
244 | __x._M_leaf_index = __current_index; | |
245 | __x._M_leaf_pos = __node_start_pos; | |
246 | __x._M_path_directions = __dirns; | |
247 | _S_setbuf(__x); | |
248 | } | |
249 | ||
250 | template <class _CharT, class _Alloc> | |
251 | void _Rope_iterator_base<_CharT,_Alloc>::_M_incr(size_t __n) { | |
252 | _M_current_pos += __n; | |
253 | if (0 != _M_buf_ptr) { | |
254 | size_t __chars_left = _M_buf_end - _M_buf_ptr; | |
255 | if (__chars_left > __n) { | |
256 | _M_buf_ptr += __n; | |
257 | } else if (__chars_left == __n) { | |
258 | _M_buf_ptr += __n; | |
259 | _S_setcache_for_incr(*this); | |
260 | } else { | |
261 | _M_buf_ptr = 0; | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
266 | template <class _CharT, class _Alloc> | |
267 | void _Rope_iterator_base<_CharT,_Alloc>::_M_decr(size_t __n) { | |
268 | if (0 != _M_buf_ptr) { | |
269 | size_t __chars_left = _M_buf_ptr - _M_buf_start; | |
270 | if (__chars_left >= __n) { | |
271 | _M_buf_ptr -= __n; | |
272 | } else { | |
273 | _M_buf_ptr = 0; | |
274 | } | |
275 | } | |
276 | _M_current_pos -= __n; | |
277 | } | |
278 | ||
279 | template <class _CharT, class _Alloc> | |
280 | void _Rope_iterator<_CharT,_Alloc>::_M_check() { | |
8fbc5ae7 | 281 | if (_M_root_rope->_M_tree_ptr != this->_M_root) { |
725dc051 | 282 | // _Rope was modified. Get things fixed up. |
8fbc5ae7 MM |
283 | _RopeRep::_S_unref(this->_M_root); |
284 | this->_M_root = _M_root_rope->_M_tree_ptr; | |
285 | _RopeRep::_S_ref(this->_M_root); | |
286 | this->_M_buf_ptr = 0; | |
725dc051 BK |
287 | } |
288 | } | |
289 | ||
290 | template <class _CharT, class _Alloc> | |
291 | inline | |
292 | _Rope_const_iterator<_CharT, _Alloc>::_Rope_const_iterator( | |
293 | const _Rope_iterator<_CharT,_Alloc>& __x) | |
294 | : _Rope_iterator_base<_CharT,_Alloc>(__x) | |
295 | { } | |
296 | ||
297 | template <class _CharT, class _Alloc> | |
298 | inline _Rope_iterator<_CharT,_Alloc>::_Rope_iterator( | |
299 | rope<_CharT,_Alloc>& __r, size_t __pos) | |
300 | : _Rope_iterator_base<_CharT,_Alloc>(__r._M_tree_ptr, __pos), | |
301 | _M_root_rope(&__r) | |
302 | { | |
8fbc5ae7 | 303 | _RopeRep::_S_ref(this->_M_root); |
725dc051 BK |
304 | } |
305 | ||
306 | template <class _CharT, class _Alloc> | |
307 | inline size_t | |
308 | rope<_CharT,_Alloc>::_S_char_ptr_len(const _CharT* __s) | |
309 | { | |
310 | const _CharT* __p = __s; | |
311 | ||
312 | while (!_S_is0(*__p)) { ++__p; } | |
313 | return (__p - __s); | |
314 | } | |
315 | ||
316 | ||
317 | #ifndef __GC | |
318 | ||
319 | template <class _CharT, class _Alloc> | |
320 | inline void _Rope_RopeRep<_CharT,_Alloc>::_M_free_c_string() | |
321 | { | |
322 | _CharT* __cstr = _M_c_string; | |
323 | if (0 != __cstr) { | |
8fbc5ae7 | 324 | size_t __size = this->_M_size + 1; |
98aff0b5 | 325 | _Destroy(__cstr, __cstr + __size); |
725dc051 BK |
326 | _Data_deallocate(__cstr, __size); |
327 | } | |
328 | } | |
329 | ||
330 | ||
331 | template <class _CharT, class _Alloc> | |
725dc051 BK |
332 | inline void _Rope_RopeRep<_CharT,_Alloc>::_S_free_string(_CharT* __s, |
333 | size_t __n, | |
334 | allocator_type __a) | |
725dc051 BK |
335 | { |
336 | if (!_S_is_basic_char_type((_CharT*)0)) { | |
98aff0b5 | 337 | _Destroy(__s, __s + __n); |
725dc051 BK |
338 | } |
339 | // This has to be a static member, so this gets a bit messy | |
725dc051 BK |
340 | __a.deallocate( |
341 | __s, _Rope_RopeLeaf<_CharT,_Alloc>::_S_rounded_up_size(__n)); | |
725dc051 BK |
342 | } |
343 | ||
344 | ||
345 | // There are several reasons for not doing this with virtual destructors | |
346 | // and a class specific delete operator: | |
347 | // - A class specific delete operator can't easily get access to | |
348 | // allocator instances if we need them. | |
349 | // - Any virtual function would need a 4 or byte vtable pointer; | |
350 | // this only requires a one byte tag per object. | |
351 | template <class _CharT, class _Alloc> | |
352 | void _Rope_RopeRep<_CharT,_Alloc>::_M_free_tree() | |
353 | { | |
354 | switch(_M_tag) { | |
355 | case _S_leaf: | |
356 | { | |
357 | _Rope_RopeLeaf<_CharT,_Alloc>* __l | |
358 | = (_Rope_RopeLeaf<_CharT,_Alloc>*)this; | |
359 | __l->_Rope_RopeLeaf<_CharT,_Alloc>::~_Rope_RopeLeaf(); | |
360 | _L_deallocate(__l, 1); | |
361 | break; | |
362 | } | |
363 | case _S_concat: | |
364 | { | |
365 | _Rope_RopeConcatenation<_CharT,_Alloc>* __c | |
366 | = (_Rope_RopeConcatenation<_CharT,_Alloc>*)this; | |
367 | __c->_Rope_RopeConcatenation<_CharT,_Alloc>:: | |
368 | ~_Rope_RopeConcatenation(); | |
369 | _C_deallocate(__c, 1); | |
370 | break; | |
371 | } | |
372 | case _S_function: | |
373 | { | |
374 | _Rope_RopeFunction<_CharT,_Alloc>* __f | |
375 | = (_Rope_RopeFunction<_CharT,_Alloc>*)this; | |
376 | __f->_Rope_RopeFunction<_CharT,_Alloc>::~_Rope_RopeFunction(); | |
377 | _F_deallocate(__f, 1); | |
378 | break; | |
379 | } | |
380 | case _S_substringfn: | |
381 | { | |
382 | _Rope_RopeSubstring<_CharT,_Alloc>* __ss = | |
383 | (_Rope_RopeSubstring<_CharT,_Alloc>*)this; | |
384 | __ss->_Rope_RopeSubstring<_CharT,_Alloc>:: | |
385 | ~_Rope_RopeSubstring(); | |
386 | _S_deallocate(__ss, 1); | |
387 | break; | |
388 | } | |
389 | } | |
390 | } | |
391 | #else | |
392 | ||
393 | template <class _CharT, class _Alloc> | |
725dc051 BK |
394 | inline void _Rope_RopeRep<_CharT,_Alloc>::_S_free_string |
395 | (const _CharT*, size_t, allocator_type) | |
725dc051 BK |
396 | {} |
397 | ||
398 | #endif | |
399 | ||
400 | ||
401 | // Concatenate a C string onto a leaf rope by copying the rope data. | |
402 | // Used for short ropes. | |
403 | template <class _CharT, class _Alloc> | |
897bb55f | 404 | typename rope<_CharT,_Alloc>::_RopeLeaf* |
725dc051 BK |
405 | rope<_CharT,_Alloc>::_S_leaf_concat_char_iter |
406 | (_RopeLeaf* __r, const _CharT* __iter, size_t __len) | |
407 | { | |
408 | size_t __old_len = __r->_M_size; | |
409 | _CharT* __new_data = (_CharT*) | |
410 | _Data_allocate(_S_rounded_up_size(__old_len + __len)); | |
411 | _RopeLeaf* __result; | |
412 | ||
413 | uninitialized_copy_n(__r->_M_data, __old_len, __new_data); | |
414 | uninitialized_copy_n(__iter, __len, __new_data + __old_len); | |
415 | _S_cond_store_eos(__new_data[__old_len + __len]); | |
322821b9 | 416 | try { |
725dc051 BK |
417 | __result = _S_new_RopeLeaf(__new_data, __old_len + __len, |
418 | __r->get_allocator()); | |
419 | } | |
322821b9 BK |
420 | catch(...) |
421 | { | |
422 | _RopeRep::__STL_FREE_STRING(__new_data, __old_len + __len, | |
423 | __r->get_allocator()); | |
424 | __throw_exception_again; | |
425 | } | |
725dc051 BK |
426 | return __result; |
427 | } | |
428 | ||
429 | #ifndef __GC | |
430 | // As above, but it's OK to clobber original if refcount is 1 | |
431 | template <class _CharT, class _Alloc> | |
897bb55f | 432 | typename rope<_CharT,_Alloc>::_RopeLeaf* |
725dc051 BK |
433 | rope<_CharT,_Alloc>::_S_destr_leaf_concat_char_iter |
434 | (_RopeLeaf* __r, const _CharT* __iter, size_t __len) | |
435 | { | |
725dc051 BK |
436 | if (__r->_M_ref_count > 1) |
437 | return _S_leaf_concat_char_iter(__r, __iter, __len); | |
438 | size_t __old_len = __r->_M_size; | |
439 | if (_S_allocated_capacity(__old_len) >= __old_len + __len) { | |
440 | // The space has been partially initialized for the standard | |
441 | // character types. But that doesn't matter for those types. | |
442 | uninitialized_copy_n(__iter, __len, __r->_M_data + __old_len); | |
443 | if (_S_is_basic_char_type((_CharT*)0)) { | |
444 | _S_cond_store_eos(__r->_M_data[__old_len + __len]); | |
725dc051 BK |
445 | } else if (__r->_M_c_string != __r->_M_data && 0 != __r->_M_c_string) { |
446 | __r->_M_free_c_string(); | |
447 | __r->_M_c_string = 0; | |
448 | } | |
449 | __r->_M_size = __old_len + __len; | |
725dc051 BK |
450 | __r->_M_ref_count = 2; |
451 | return __r; | |
452 | } else { | |
453 | _RopeLeaf* __result = _S_leaf_concat_char_iter(__r, __iter, __len); | |
725dc051 BK |
454 | return __result; |
455 | } | |
456 | } | |
457 | #endif | |
458 | ||
459 | // Assumes left and right are not 0. | |
460 | // Does not increment (nor decrement on exception) child reference counts. | |
461 | // Result has ref count 1. | |
462 | template <class _CharT, class _Alloc> | |
897bb55f | 463 | typename rope<_CharT,_Alloc>::_RopeRep* |
725dc051 BK |
464 | rope<_CharT,_Alloc>::_S_tree_concat (_RopeRep* __left, _RopeRep* __right) |
465 | { | |
322821b9 BK |
466 | _RopeConcatenation* __result = _S_new_RopeConcatenation(__left, __right, |
467 | __left->get_allocator()); | |
468 | size_t __depth = __result->_M_depth; | |
725dc051 | 469 | |
322821b9 BK |
470 | if (__depth > 20 && (__result->_M_size < 1000 || |
471 | __depth > _RopeRep::_S_max_rope_depth)) | |
472 | { | |
473 | _RopeRep* __balanced; | |
725dc051 | 474 | |
322821b9 BK |
475 | try |
476 | { | |
477 | __balanced = _S_balance(__result); | |
478 | __result->_M_unref_nonnil(); | |
725dc051 | 479 | } |
322821b9 BK |
480 | catch(...) |
481 | { | |
482 | _C_deallocate(__result,1); | |
483 | __throw_exception_again; | |
484 | } | |
485 | // In case of exception, we need to deallocate | |
486 | // otherwise dangling result node. But caller | |
487 | // still owns its children. Thus unref is | |
488 | // inappropriate. | |
489 | return __balanced; | |
490 | } | |
491 | else | |
492 | return __result; | |
725dc051 BK |
493 | } |
494 | ||
495 | template <class _CharT, class _Alloc> | |
897bb55f | 496 | typename |
725dc051 BK |
497 | rope<_CharT,_Alloc>::_RopeRep* rope<_CharT,_Alloc>::_S_concat_char_iter |
498 | (_RopeRep* __r, const _CharT*__s, size_t __slen) | |
499 | { | |
500 | _RopeRep* __result; | |
501 | if (0 == __slen) { | |
502 | _S_ref(__r); | |
503 | return __r; | |
504 | } | |
505 | if (0 == __r) | |
506 | return __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen, | |
507 | __r->get_allocator()); | |
508 | if (_RopeRep::_S_leaf == __r->_M_tag && | |
509 | __r->_M_size + __slen <= _S_copy_max) { | |
510 | __result = _S_leaf_concat_char_iter((_RopeLeaf*)__r, __s, __slen); | |
725dc051 BK |
511 | return __result; |
512 | } | |
513 | if (_RopeRep::_S_concat == __r->_M_tag | |
514 | && _RopeRep::_S_leaf == ((_RopeConcatenation*)__r)->_M_right->_M_tag) { | |
515 | _RopeLeaf* __right = | |
516 | (_RopeLeaf* )(((_RopeConcatenation* )__r)->_M_right); | |
517 | if (__right->_M_size + __slen <= _S_copy_max) { | |
518 | _RopeRep* __left = ((_RopeConcatenation*)__r)->_M_left; | |
519 | _RopeRep* __nright = | |
520 | _S_leaf_concat_char_iter((_RopeLeaf*)__right, __s, __slen); | |
521 | __left->_M_ref_nonnil(); | |
322821b9 | 522 | try { |
725dc051 BK |
523 | __result = _S_tree_concat(__left, __nright); |
524 | } | |
322821b9 BK |
525 | catch(...) |
526 | { | |
527 | _S_unref(__left); | |
528 | _S_unref(__nright); | |
529 | __throw_exception_again; | |
530 | } | |
725dc051 BK |
531 | return __result; |
532 | } | |
533 | } | |
534 | _RopeRep* __nright = | |
535 | __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen, __r->get_allocator()); | |
322821b9 | 536 | try { |
725dc051 BK |
537 | __r->_M_ref_nonnil(); |
538 | __result = _S_tree_concat(__r, __nright); | |
539 | } | |
322821b9 BK |
540 | catch(...) |
541 | { | |
542 | _S_unref(__r); | |
543 | _S_unref(__nright); | |
544 | __throw_exception_again; | |
545 | } | |
725dc051 BK |
546 | return __result; |
547 | } | |
548 | ||
549 | #ifndef __GC | |
550 | template <class _CharT, class _Alloc> | |
897bb55f | 551 | typename rope<_CharT,_Alloc>::_RopeRep* |
725dc051 BK |
552 | rope<_CharT,_Alloc>::_S_destr_concat_char_iter( |
553 | _RopeRep* __r, const _CharT* __s, size_t __slen) | |
554 | { | |
555 | _RopeRep* __result; | |
556 | if (0 == __r) | |
557 | return __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen, | |
558 | __r->get_allocator()); | |
559 | size_t __count = __r->_M_ref_count; | |
560 | size_t __orig_size = __r->_M_size; | |
725dc051 BK |
561 | if (__count > 1) return _S_concat_char_iter(__r, __s, __slen); |
562 | if (0 == __slen) { | |
563 | __r->_M_ref_count = 2; // One more than before | |
564 | return __r; | |
565 | } | |
566 | if (__orig_size + __slen <= _S_copy_max && | |
567 | _RopeRep::_S_leaf == __r->_M_tag) { | |
568 | __result = _S_destr_leaf_concat_char_iter((_RopeLeaf*)__r, __s, __slen); | |
569 | return __result; | |
570 | } | |
571 | if (_RopeRep::_S_concat == __r->_M_tag) { | |
572 | _RopeLeaf* __right = (_RopeLeaf*)(((_RopeConcatenation*)__r)->_M_right); | |
573 | if (_RopeRep::_S_leaf == __right->_M_tag | |
574 | && __right->_M_size + __slen <= _S_copy_max) { | |
575 | _RopeRep* __new_right = | |
576 | _S_destr_leaf_concat_char_iter(__right, __s, __slen); | |
322821b9 BK |
577 | if (__right == __new_right) |
578 | __new_right->_M_ref_count = 1; | |
579 | else | |
580 | __right->_M_unref_nonnil(); | |
725dc051 BK |
581 | __r->_M_ref_count = 2; // One more than before. |
582 | ((_RopeConcatenation*)__r)->_M_right = __new_right; | |
583 | __r->_M_size = __orig_size + __slen; | |
584 | if (0 != __r->_M_c_string) { | |
585 | __r->_M_free_c_string(); | |
586 | __r->_M_c_string = 0; | |
587 | } | |
588 | return __r; | |
589 | } | |
590 | } | |
591 | _RopeRep* __right = | |
592 | __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __slen, __r->get_allocator()); | |
593 | __r->_M_ref_nonnil(); | |
322821b9 | 594 | try { |
725dc051 BK |
595 | __result = _S_tree_concat(__r, __right); |
596 | } | |
322821b9 BK |
597 | catch(...) |
598 | { | |
599 | _S_unref(__r); | |
600 | _S_unref(__right); | |
601 | __throw_exception_again; | |
602 | } | |
725dc051 BK |
603 | return __result; |
604 | } | |
605 | #endif /* !__GC */ | |
606 | ||
607 | template <class _CharT, class _Alloc> | |
897bb55f | 608 | typename rope<_CharT,_Alloc>::_RopeRep* |
725dc051 BK |
609 | rope<_CharT,_Alloc>::_S_concat(_RopeRep* __left, _RopeRep* __right) |
610 | { | |
611 | if (0 == __left) { | |
612 | _S_ref(__right); | |
613 | return __right; | |
614 | } | |
615 | if (0 == __right) { | |
616 | __left->_M_ref_nonnil(); | |
617 | return __left; | |
618 | } | |
619 | if (_RopeRep::_S_leaf == __right->_M_tag) { | |
620 | if (_RopeRep::_S_leaf == __left->_M_tag) { | |
621 | if (__right->_M_size + __left->_M_size <= _S_copy_max) { | |
622 | return _S_leaf_concat_char_iter((_RopeLeaf*)__left, | |
623 | ((_RopeLeaf*)__right)->_M_data, | |
624 | __right->_M_size); | |
625 | } | |
626 | } else if (_RopeRep::_S_concat == __left->_M_tag | |
627 | && _RopeRep::_S_leaf == | |
628 | ((_RopeConcatenation*)__left)->_M_right->_M_tag) { | |
629 | _RopeLeaf* __leftright = | |
630 | (_RopeLeaf*)(((_RopeConcatenation*)__left)->_M_right); | |
631 | if (__leftright->_M_size + __right->_M_size <= _S_copy_max) { | |
632 | _RopeRep* __leftleft = ((_RopeConcatenation*)__left)->_M_left; | |
633 | _RopeRep* __rest = _S_leaf_concat_char_iter(__leftright, | |
634 | ((_RopeLeaf*)__right)->_M_data, | |
635 | __right->_M_size); | |
636 | __leftleft->_M_ref_nonnil(); | |
322821b9 | 637 | try { |
725dc051 BK |
638 | return(_S_tree_concat(__leftleft, __rest)); |
639 | } | |
322821b9 BK |
640 | catch(...) |
641 | { | |
642 | _S_unref(__leftleft); | |
643 | _S_unref(__rest); | |
644 | __throw_exception_again; | |
645 | } | |
725dc051 BK |
646 | } |
647 | } | |
648 | } | |
649 | __left->_M_ref_nonnil(); | |
650 | __right->_M_ref_nonnil(); | |
322821b9 | 651 | try { |
725dc051 BK |
652 | return(_S_tree_concat(__left, __right)); |
653 | } | |
322821b9 BK |
654 | catch(...) |
655 | { | |
656 | _S_unref(__left); | |
657 | _S_unref(__right); | |
658 | __throw_exception_again; | |
659 | } | |
725dc051 BK |
660 | } |
661 | ||
662 | template <class _CharT, class _Alloc> | |
897bb55f | 663 | typename rope<_CharT,_Alloc>::_RopeRep* |
725dc051 BK |
664 | rope<_CharT,_Alloc>::_S_substring(_RopeRep* __base, |
665 | size_t __start, size_t __endp1) | |
666 | { | |
667 | if (0 == __base) return 0; | |
668 | size_t __len = __base->_M_size; | |
669 | size_t __adj_endp1; | |
670 | const size_t __lazy_threshold = 128; | |
671 | ||
672 | if (__endp1 >= __len) { | |
673 | if (0 == __start) { | |
674 | __base->_M_ref_nonnil(); | |
675 | return __base; | |
676 | } else { | |
677 | __adj_endp1 = __len; | |
678 | } | |
679 | } else { | |
680 | __adj_endp1 = __endp1; | |
681 | } | |
682 | switch(__base->_M_tag) { | |
683 | case _RopeRep::_S_concat: | |
684 | { | |
685 | _RopeConcatenation* __c = (_RopeConcatenation*)__base; | |
686 | _RopeRep* __left = __c->_M_left; | |
687 | _RopeRep* __right = __c->_M_right; | |
688 | size_t __left_len = __left->_M_size; | |
689 | _RopeRep* __result; | |
690 | ||
691 | if (__adj_endp1 <= __left_len) { | |
692 | return _S_substring(__left, __start, __endp1); | |
693 | } else if (__start >= __left_len) { | |
694 | return _S_substring(__right, __start - __left_len, | |
695 | __adj_endp1 - __left_len); | |
696 | } | |
697 | _Self_destruct_ptr __left_result( | |
698 | _S_substring(__left, __start, __left_len)); | |
699 | _Self_destruct_ptr __right_result( | |
700 | _S_substring(__right, 0, __endp1 - __left_len)); | |
701 | __result = _S_concat(__left_result, __right_result); | |
725dc051 BK |
702 | return __result; |
703 | } | |
704 | case _RopeRep::_S_leaf: | |
705 | { | |
706 | _RopeLeaf* __l = (_RopeLeaf*)__base; | |
707 | _RopeLeaf* __result; | |
708 | size_t __result_len; | |
709 | if (__start >= __adj_endp1) return 0; | |
710 | __result_len = __adj_endp1 - __start; | |
711 | if (__result_len > __lazy_threshold) goto lazy; | |
712 | # ifdef __GC | |
713 | const _CharT* __section = __l->_M_data + __start; | |
714 | __result = _S_new_RopeLeaf(__section, __result_len, | |
715 | __base->get_allocator()); | |
716 | __result->_M_c_string = 0; // Not eos terminated. | |
717 | # else | |
718 | // We should sometimes create substring node instead. | |
719 | __result = __STL_ROPE_FROM_UNOWNED_CHAR_PTR( | |
720 | __l->_M_data + __start, __result_len, | |
721 | __base->get_allocator()); | |
722 | # endif | |
723 | return __result; | |
724 | } | |
725 | case _RopeRep::_S_substringfn: | |
726 | // Avoid introducing multiple layers of substring nodes. | |
727 | { | |
728 | _RopeSubstring* __old = (_RopeSubstring*)__base; | |
729 | size_t __result_len; | |
730 | if (__start >= __adj_endp1) return 0; | |
731 | __result_len = __adj_endp1 - __start; | |
732 | if (__result_len > __lazy_threshold) { | |
733 | _RopeSubstring* __result = | |
734 | _S_new_RopeSubstring(__old->_M_base, | |
735 | __start + __old->_M_start, | |
736 | __adj_endp1 - __start, | |
737 | __base->get_allocator()); | |
738 | return __result; | |
739 | ||
740 | } // *** else fall through: *** | |
741 | } | |
742 | case _RopeRep::_S_function: | |
743 | { | |
744 | _RopeFunction* __f = (_RopeFunction*)__base; | |
745 | _CharT* __section; | |
746 | size_t __result_len; | |
747 | if (__start >= __adj_endp1) return 0; | |
748 | __result_len = __adj_endp1 - __start; | |
749 | ||
750 | if (__result_len > __lazy_threshold) goto lazy; | |
751 | __section = (_CharT*) | |
752 | _Data_allocate(_S_rounded_up_size(__result_len)); | |
322821b9 | 753 | try { |
725dc051 BK |
754 | (*(__f->_M_fn))(__start, __result_len, __section); |
755 | } | |
322821b9 BK |
756 | catch(...) |
757 | { | |
758 | _RopeRep::__STL_FREE_STRING( | |
759 | __section, __result_len, __base->get_allocator()); | |
760 | __throw_exception_again; | |
761 | } | |
725dc051 BK |
762 | _S_cond_store_eos(__section[__result_len]); |
763 | return _S_new_RopeLeaf(__section, __result_len, | |
764 | __base->get_allocator()); | |
765 | } | |
766 | } | |
725dc051 BK |
767 | lazy: |
768 | { | |
769 | // Create substring node. | |
770 | return _S_new_RopeSubstring(__base, __start, __adj_endp1 - __start, | |
771 | __base->get_allocator()); | |
772 | } | |
773 | } | |
774 | ||
775 | template<class _CharT> | |
776 | class _Rope_flatten_char_consumer : public _Rope_char_consumer<_CharT> { | |
777 | private: | |
778 | _CharT* _M_buf_ptr; | |
779 | public: | |
780 | ||
781 | _Rope_flatten_char_consumer(_CharT* __buffer) { | |
782 | _M_buf_ptr = __buffer; | |
783 | }; | |
784 | ~_Rope_flatten_char_consumer() {} | |
785 | bool operator() (const _CharT* __leaf, size_t __n) { | |
786 | uninitialized_copy_n(__leaf, __n, _M_buf_ptr); | |
787 | _M_buf_ptr += __n; | |
788 | return true; | |
789 | } | |
790 | }; | |
791 | ||
792 | template<class _CharT> | |
793 | class _Rope_find_char_char_consumer : public _Rope_char_consumer<_CharT> { | |
794 | private: | |
795 | _CharT _M_pattern; | |
796 | public: | |
797 | size_t _M_count; // Number of nonmatching characters | |
798 | _Rope_find_char_char_consumer(_CharT __p) | |
799 | : _M_pattern(__p), _M_count(0) {} | |
800 | ~_Rope_find_char_char_consumer() {} | |
801 | bool operator() (const _CharT* __leaf, size_t __n) { | |
802 | size_t __i; | |
803 | for (__i = 0; __i < __n; __i++) { | |
804 | if (__leaf[__i] == _M_pattern) { | |
805 | _M_count += __i; return false; | |
806 | } | |
807 | } | |
808 | _M_count += __n; return true; | |
809 | } | |
810 | }; | |
811 | ||
725dc051 BK |
812 | template<class _CharT, class _Traits> |
813 | // Here _CharT is both the stream and rope character type. | |
725dc051 BK |
814 | class _Rope_insert_char_consumer : public _Rope_char_consumer<_CharT> { |
815 | private: | |
725dc051 | 816 | typedef basic_ostream<_CharT,_Traits> _Insert_ostream; |
725dc051 BK |
817 | _Insert_ostream& _M_o; |
818 | public: | |
819 | _Rope_insert_char_consumer(_Insert_ostream& __writer) | |
820 | : _M_o(__writer) {}; | |
821 | ~_Rope_insert_char_consumer() { }; | |
822 | // Caller is presumed to own the ostream | |
823 | bool operator() (const _CharT* __leaf, size_t __n); | |
824 | // Returns true to continue traversal. | |
825 | }; | |
826 | ||
d53d7f6e PE |
827 | template<class _CharT, class _Traits> |
828 | bool _Rope_insert_char_consumer<_CharT, _Traits>::operator() | |
829 | (const _CharT* __leaf, size_t __n) | |
830 | { | |
831 | size_t __i; | |
832 | // We assume that formatting is set up correctly for each element. | |
833 | for (__i = 0; __i < __n; __i++) _M_o.put(__leaf[__i]); | |
834 | return true; | |
835 | } | |
725dc051 BK |
836 | |
837 | template <class _CharT, class _Alloc> | |
838 | bool rope<_CharT, _Alloc>::_S_apply_to_pieces( | |
839 | _Rope_char_consumer<_CharT>& __c, | |
840 | const _RopeRep* __r, | |
841 | size_t __begin, size_t __end) | |
842 | { | |
843 | if (0 == __r) return true; | |
844 | switch(__r->_M_tag) { | |
845 | case _RopeRep::_S_concat: | |
846 | { | |
847 | _RopeConcatenation* __conc = (_RopeConcatenation*)__r; | |
848 | _RopeRep* __left = __conc->_M_left; | |
849 | size_t __left_len = __left->_M_size; | |
850 | if (__begin < __left_len) { | |
e538847e | 851 | size_t __left_end = std::min(__left_len, __end); |
725dc051 BK |
852 | if (!_S_apply_to_pieces(__c, __left, __begin, __left_end)) |
853 | return false; | |
854 | } | |
855 | if (__end > __left_len) { | |
856 | _RopeRep* __right = __conc->_M_right; | |
e538847e | 857 | size_t __right_start = std::max(__left_len, __begin); |
725dc051 BK |
858 | if (!_S_apply_to_pieces(__c, __right, |
859 | __right_start - __left_len, | |
860 | __end - __left_len)) { | |
861 | return false; | |
862 | } | |
863 | } | |
864 | } | |
865 | return true; | |
866 | case _RopeRep::_S_leaf: | |
867 | { | |
868 | _RopeLeaf* __l = (_RopeLeaf*)__r; | |
869 | return __c(__l->_M_data + __begin, __end - __begin); | |
870 | } | |
871 | case _RopeRep::_S_function: | |
872 | case _RopeRep::_S_substringfn: | |
873 | { | |
874 | _RopeFunction* __f = (_RopeFunction*)__r; | |
875 | size_t __len = __end - __begin; | |
876 | bool __result; | |
877 | _CharT* __buffer = | |
9d6a24bd | 878 | (_CharT*)__alloc::allocate(__len * sizeof(_CharT)); |
322821b9 | 879 | try { |
725dc051 BK |
880 | (*(__f->_M_fn))(__begin, __len, __buffer); |
881 | __result = __c(__buffer, __len); | |
9d6a24bd | 882 | __alloc::deallocate(__buffer, __len * sizeof(_CharT)); |
725dc051 | 883 | } |
322821b9 BK |
884 | catch(...) |
885 | { | |
9d6a24bd | 886 | __alloc::deallocate(__buffer, __len * sizeof(_CharT)); |
322821b9 BK |
887 | __throw_exception_again; |
888 | } | |
725dc051 BK |
889 | return __result; |
890 | } | |
891 | default: | |
322821b9 | 892 | return false; |
725dc051 BK |
893 | } |
894 | } | |
895 | ||
725dc051 BK |
896 | template<class _CharT, class _Traits> |
897 | inline void _Rope_fill(basic_ostream<_CharT, _Traits>& __o, size_t __n) | |
725dc051 BK |
898 | { |
899 | char __f = __o.fill(); | |
900 | size_t __i; | |
901 | ||
902 | for (__i = 0; __i < __n; __i++) __o.put(__f); | |
903 | } | |
904 | ||
905 | ||
906 | template <class _CharT> inline bool _Rope_is_simple(_CharT*) { return false; } | |
907 | inline bool _Rope_is_simple(char*) { return true; } | |
908 | inline bool _Rope_is_simple(wchar_t*) { return true; } | |
909 | ||
d53d7f6e PE |
910 | template<class _CharT, class _Traits, class _Alloc> |
911 | basic_ostream<_CharT, _Traits>& operator<< (basic_ostream<_CharT, _Traits>& __o, | |
912 | const rope<_CharT, _Alloc>& __r) | |
725dc051 BK |
913 | { |
914 | size_t __w = __o.width(); | |
e538847e | 915 | bool __left = bool(__o.flags() & std::ios::left); |
725dc051 BK |
916 | size_t __pad_len; |
917 | size_t __rope_len = __r.size(); | |
725dc051 | 918 | _Rope_insert_char_consumer<_CharT, _Traits> __c(__o); |
725dc051 BK |
919 | bool __is_simple = _Rope_is_simple((_CharT*)0); |
920 | ||
921 | if (__rope_len < __w) { | |
922 | __pad_len = __w - __rope_len; | |
923 | } else { | |
924 | __pad_len = 0; | |
925 | } | |
926 | if (!__is_simple) __o.width(__w/__rope_len); | |
322821b9 | 927 | try { |
725dc051 BK |
928 | if (__is_simple && !__left && __pad_len > 0) { |
929 | _Rope_fill(__o, __pad_len); | |
930 | } | |
931 | __r.apply_to_pieces(0, __r.size(), __c); | |
932 | if (__is_simple && __left && __pad_len > 0) { | |
933 | _Rope_fill(__o, __pad_len); | |
934 | } | |
935 | if (!__is_simple) | |
936 | __o.width(__w); | |
937 | } | |
322821b9 BK |
938 | catch(...) |
939 | { | |
940 | if (!__is_simple) | |
941 | __o.width(__w); | |
942 | __throw_exception_again; | |
943 | } | |
725dc051 BK |
944 | return __o; |
945 | } | |
946 | ||
947 | template <class _CharT, class _Alloc> | |
948 | _CharT* | |
949 | rope<_CharT,_Alloc>::_S_flatten(_RopeRep* __r, | |
950 | size_t __start, size_t __len, | |
951 | _CharT* __buffer) | |
952 | { | |
953 | _Rope_flatten_char_consumer<_CharT> __c(__buffer); | |
954 | _S_apply_to_pieces(__c, __r, __start, __start + __len); | |
955 | return(__buffer + __len); | |
956 | } | |
957 | ||
958 | template <class _CharT, class _Alloc> | |
959 | size_t | |
960 | rope<_CharT,_Alloc>::find(_CharT __pattern, size_t __start) const | |
961 | { | |
962 | _Rope_find_char_char_consumer<_CharT> __c(__pattern); | |
8fbc5ae7 | 963 | _S_apply_to_pieces(__c, this->_M_tree_ptr, __start, size()); |
725dc051 BK |
964 | size_type __result_pos = __start + __c._M_count; |
965 | # ifndef __STL_OLD_ROPE_SEMANTICS | |
966 | if (__result_pos == size()) __result_pos = npos; | |
967 | # endif | |
968 | return __result_pos; | |
969 | } | |
970 | ||
971 | template <class _CharT, class _Alloc> | |
972 | _CharT* | |
973 | rope<_CharT,_Alloc>::_S_flatten(_RopeRep* __r, _CharT* __buffer) | |
974 | { | |
975 | if (0 == __r) return __buffer; | |
976 | switch(__r->_M_tag) { | |
977 | case _RopeRep::_S_concat: | |
978 | { | |
979 | _RopeConcatenation* __c = (_RopeConcatenation*)__r; | |
980 | _RopeRep* __left = __c->_M_left; | |
981 | _RopeRep* __right = __c->_M_right; | |
982 | _CharT* __rest = _S_flatten(__left, __buffer); | |
983 | return _S_flatten(__right, __rest); | |
984 | } | |
985 | case _RopeRep::_S_leaf: | |
986 | { | |
987 | _RopeLeaf* __l = (_RopeLeaf*)__r; | |
f53d0ff1 | 988 | return copy_n(__l->_M_data, __l->_M_size, __buffer).second; |
725dc051 BK |
989 | } |
990 | case _RopeRep::_S_function: | |
991 | case _RopeRep::_S_substringfn: | |
c5504edb | 992 | // We don't yet do anything with substring nodes. |
725dc051 BK |
993 | // This needs to be fixed before ropefiles will work well. |
994 | { | |
995 | _RopeFunction* __f = (_RopeFunction*)__r; | |
996 | (*(__f->_M_fn))(0, __f->_M_size, __buffer); | |
997 | return __buffer + __f->_M_size; | |
998 | } | |
999 | default: | |
725dc051 BK |
1000 | return 0; |
1001 | } | |
1002 | } | |
1003 | ||
1004 | ||
1005 | // This needs work for _CharT != char | |
1006 | template <class _CharT, class _Alloc> | |
1007 | void | |
1008 | rope<_CharT,_Alloc>::_S_dump(_RopeRep* __r, int __indent) | |
1009 | { | |
1010 | for (int __i = 0; __i < __indent; __i++) putchar(' '); | |
1011 | if (0 == __r) { | |
1012 | printf("NULL\n"); return; | |
1013 | } | |
1014 | if (_RopeRep::_S_concat == __r->_M_tag) { | |
1015 | _RopeConcatenation* __c = (_RopeConcatenation*)__r; | |
1016 | _RopeRep* __left = __c->_M_left; | |
1017 | _RopeRep* __right = __c->_M_right; | |
1018 | ||
1019 | # ifdef __GC | |
1020 | printf("Concatenation %p (depth = %d, len = %ld, %s balanced)\n", | |
1021 | __r, __r->_M_depth, __r->_M_size, __r->_M_is_balanced? "" : "not"); | |
1022 | # else | |
1023 | printf("Concatenation %p (rc = %ld, depth = %d, " | |
1024 | "len = %ld, %s balanced)\n", | |
1025 | __r, __r->_M_ref_count, __r->_M_depth, __r->_M_size, | |
1026 | __r->_M_is_balanced? "" : "not"); | |
1027 | # endif | |
1028 | _S_dump(__left, __indent + 2); | |
1029 | _S_dump(__right, __indent + 2); | |
1030 | return; | |
1031 | } else { | |
1032 | char* __kind; | |
1033 | ||
1034 | switch (__r->_M_tag) { | |
1035 | case _RopeRep::_S_leaf: | |
1036 | __kind = "Leaf"; | |
1037 | break; | |
1038 | case _RopeRep::_S_function: | |
1039 | __kind = "Function"; | |
1040 | break; | |
1041 | case _RopeRep::_S_substringfn: | |
1042 | __kind = "Function representing substring"; | |
1043 | break; | |
1044 | default: | |
1045 | __kind = "(corrupted kind field!)"; | |
1046 | } | |
1047 | # ifdef __GC | |
1048 | printf("%s %p (depth = %d, len = %ld) ", | |
1049 | __kind, __r, __r->_M_depth, __r->_M_size); | |
1050 | # else | |
1051 | printf("%s %p (rc = %ld, depth = %d, len = %ld) ", | |
1052 | __kind, __r, __r->_M_ref_count, __r->_M_depth, __r->_M_size); | |
1053 | # endif | |
1054 | if (_S_is_one_byte_char_type((_CharT*)0)) { | |
1055 | const int __max_len = 40; | |
1056 | _Self_destruct_ptr __prefix(_S_substring(__r, 0, __max_len)); | |
1057 | _CharT __buffer[__max_len + 1]; | |
1058 | bool __too_big = __r->_M_size > __prefix->_M_size; | |
1059 | ||
1060 | _S_flatten(__prefix, __buffer); | |
1061 | __buffer[__prefix->_M_size] = _S_eos((_CharT*)0); | |
1062 | printf("%s%s\n", | |
1063 | (char*)__buffer, __too_big? "...\n" : "\n"); | |
1064 | } else { | |
1065 | printf("\n"); | |
1066 | } | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | template <class _CharT, class _Alloc> | |
1071 | const unsigned long | |
1072 | rope<_CharT,_Alloc>::_S_min_len[ | |
1073 | _Rope_RopeRep<_CharT,_Alloc>::_S_max_rope_depth + 1] = { | |
1074 | /* 0 */1, /* 1 */2, /* 2 */3, /* 3 */5, /* 4 */8, /* 5 */13, /* 6 */21, | |
1075 | /* 7 */34, /* 8 */55, /* 9 */89, /* 10 */144, /* 11 */233, /* 12 */377, | |
1076 | /* 13 */610, /* 14 */987, /* 15 */1597, /* 16 */2584, /* 17 */4181, | |
1077 | /* 18 */6765, /* 19 */10946, /* 20 */17711, /* 21 */28657, /* 22 */46368, | |
1078 | /* 23 */75025, /* 24 */121393, /* 25 */196418, /* 26 */317811, | |
1079 | /* 27 */514229, /* 28 */832040, /* 29 */1346269, /* 30 */2178309, | |
1080 | /* 31 */3524578, /* 32 */5702887, /* 33 */9227465, /* 34 */14930352, | |
1081 | /* 35 */24157817, /* 36 */39088169, /* 37 */63245986, /* 38 */102334155, | |
1082 | /* 39 */165580141, /* 40 */267914296, /* 41 */433494437, | |
1083 | /* 42 */701408733, /* 43 */1134903170, /* 44 */1836311903, | |
1084 | /* 45 */2971215073u }; | |
1085 | // These are Fibonacci numbers < 2**32. | |
1086 | ||
1087 | template <class _CharT, class _Alloc> | |
897bb55f | 1088 | typename rope<_CharT,_Alloc>::_RopeRep* |
725dc051 BK |
1089 | rope<_CharT,_Alloc>::_S_balance(_RopeRep* __r) |
1090 | { | |
1091 | _RopeRep* __forest[_RopeRep::_S_max_rope_depth + 1]; | |
1092 | _RopeRep* __result = 0; | |
1093 | int __i; | |
1094 | // Invariant: | |
1095 | // The concatenation of forest in descending order is equal to __r. | |
1096 | // __forest[__i]._M_size >= _S_min_len[__i] | |
1097 | // __forest[__i]._M_depth = __i | |
1098 | // References from forest are included in refcount. | |
1099 | ||
1100 | for (__i = 0; __i <= _RopeRep::_S_max_rope_depth; ++__i) | |
1101 | __forest[__i] = 0; | |
322821b9 | 1102 | try { |
725dc051 BK |
1103 | _S_add_to_forest(__r, __forest); |
1104 | for (__i = 0; __i <= _RopeRep::_S_max_rope_depth; ++__i) | |
1105 | if (0 != __forest[__i]) { | |
1106 | # ifndef __GC | |
1107 | _Self_destruct_ptr __old(__result); | |
1108 | # endif | |
1109 | __result = _S_concat(__forest[__i], __result); | |
1110 | __forest[__i]->_M_unref_nonnil(); | |
322821b9 | 1111 | # if !defined(__GC) && defined(__EXCEPTIONS) |
725dc051 BK |
1112 | __forest[__i] = 0; |
1113 | # endif | |
1114 | } | |
1115 | } | |
322821b9 BK |
1116 | catch(...) |
1117 | { | |
1118 | for(__i = 0; __i <= _RopeRep::_S_max_rope_depth; __i++) | |
1119 | _S_unref(__forest[__i]); | |
1120 | __throw_exception_again; | |
1121 | } | |
1122 | ||
1123 | if (__result->_M_depth > _RopeRep::_S_max_rope_depth) | |
988ad90d | 1124 | __throw_length_error("rope::_S_balance"); |
725dc051 BK |
1125 | return(__result); |
1126 | } | |
1127 | ||
1128 | ||
1129 | template <class _CharT, class _Alloc> | |
1130 | void | |
1131 | rope<_CharT,_Alloc>::_S_add_to_forest(_RopeRep* __r, _RopeRep** __forest) | |
1132 | { | |
1133 | if (__r->_M_is_balanced) { | |
1134 | _S_add_leaf_to_forest(__r, __forest); | |
1135 | return; | |
1136 | } | |
322821b9 | 1137 | |
725dc051 BK |
1138 | { |
1139 | _RopeConcatenation* __c = (_RopeConcatenation*)__r; | |
1140 | ||
1141 | _S_add_to_forest(__c->_M_left, __forest); | |
1142 | _S_add_to_forest(__c->_M_right, __forest); | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | ||
1147 | template <class _CharT, class _Alloc> | |
1148 | void | |
1149 | rope<_CharT,_Alloc>::_S_add_leaf_to_forest(_RopeRep* __r, _RopeRep** __forest) | |
1150 | { | |
1151 | _RopeRep* __insertee; // included in refcount | |
1152 | _RopeRep* __too_tiny = 0; // included in refcount | |
1153 | int __i; // forest[0..__i-1] is empty | |
1154 | size_t __s = __r->_M_size; | |
1155 | ||
1156 | for (__i = 0; __s >= _S_min_len[__i+1]/* not this bucket */; ++__i) { | |
1157 | if (0 != __forest[__i]) { | |
1158 | # ifndef __GC | |
1159 | _Self_destruct_ptr __old(__too_tiny); | |
1160 | # endif | |
1161 | __too_tiny = _S_concat_and_set_balanced(__forest[__i], __too_tiny); | |
1162 | __forest[__i]->_M_unref_nonnil(); | |
1163 | __forest[__i] = 0; | |
1164 | } | |
1165 | } | |
1166 | { | |
1167 | # ifndef __GC | |
1168 | _Self_destruct_ptr __old(__too_tiny); | |
1169 | # endif | |
1170 | __insertee = _S_concat_and_set_balanced(__too_tiny, __r); | |
1171 | } | |
1172 | // Too_tiny dead, and no longer included in refcount. | |
1173 | // Insertee is live and included. | |
725dc051 BK |
1174 | for (;; ++__i) { |
1175 | if (0 != __forest[__i]) { | |
1176 | # ifndef __GC | |
1177 | _Self_destruct_ptr __old(__insertee); | |
1178 | # endif | |
1179 | __insertee = _S_concat_and_set_balanced(__forest[__i], __insertee); | |
1180 | __forest[__i]->_M_unref_nonnil(); | |
1181 | __forest[__i] = 0; | |
725dc051 | 1182 | } |
725dc051 BK |
1183 | if (__i == _RopeRep::_S_max_rope_depth || |
1184 | __insertee->_M_size < _S_min_len[__i+1]) { | |
1185 | __forest[__i] = __insertee; | |
1186 | // refcount is OK since __insertee is now dead. | |
1187 | return; | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | template <class _CharT, class _Alloc> | |
1193 | _CharT | |
1194 | rope<_CharT,_Alloc>::_S_fetch(_RopeRep* __r, size_type __i) | |
1195 | { | |
1196 | __GC_CONST _CharT* __cstr = __r->_M_c_string; | |
1197 | ||
725dc051 BK |
1198 | if (0 != __cstr) return __cstr[__i]; |
1199 | for(;;) { | |
1200 | switch(__r->_M_tag) { | |
1201 | case _RopeRep::_S_concat: | |
1202 | { | |
1203 | _RopeConcatenation* __c = (_RopeConcatenation*)__r; | |
1204 | _RopeRep* __left = __c->_M_left; | |
1205 | size_t __left_len = __left->_M_size; | |
1206 | ||
1207 | if (__i >= __left_len) { | |
1208 | __i -= __left_len; | |
1209 | __r = __c->_M_right; | |
1210 | } else { | |
1211 | __r = __left; | |
1212 | } | |
1213 | } | |
1214 | break; | |
1215 | case _RopeRep::_S_leaf: | |
1216 | { | |
1217 | _RopeLeaf* __l = (_RopeLeaf*)__r; | |
1218 | return __l->_M_data[__i]; | |
1219 | } | |
1220 | case _RopeRep::_S_function: | |
1221 | case _RopeRep::_S_substringfn: | |
1222 | { | |
1223 | _RopeFunction* __f = (_RopeFunction*)__r; | |
1224 | _CharT __result; | |
1225 | ||
1226 | (*(__f->_M_fn))(__i, 1, &__result); | |
1227 | return __result; | |
1228 | } | |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | # ifndef __GC | |
1234 | // Return a uniquely referenced character slot for the given | |
1235 | // position, or 0 if that's not possible. | |
1236 | template <class _CharT, class _Alloc> | |
1237 | _CharT* | |
1238 | rope<_CharT,_Alloc>::_S_fetch_ptr(_RopeRep* __r, size_type __i) | |
1239 | { | |
1240 | _RopeRep* __clrstack[_RopeRep::_S_max_rope_depth]; | |
1241 | size_t __csptr = 0; | |
1242 | ||
1243 | for(;;) { | |
1244 | if (__r->_M_ref_count > 1) return 0; | |
1245 | switch(__r->_M_tag) { | |
1246 | case _RopeRep::_S_concat: | |
1247 | { | |
1248 | _RopeConcatenation* __c = (_RopeConcatenation*)__r; | |
1249 | _RopeRep* __left = __c->_M_left; | |
1250 | size_t __left_len = __left->_M_size; | |
1251 | ||
1252 | if (__c->_M_c_string != 0) __clrstack[__csptr++] = __c; | |
1253 | if (__i >= __left_len) { | |
1254 | __i -= __left_len; | |
1255 | __r = __c->_M_right; | |
1256 | } else { | |
1257 | __r = __left; | |
1258 | } | |
1259 | } | |
1260 | break; | |
1261 | case _RopeRep::_S_leaf: | |
1262 | { | |
1263 | _RopeLeaf* __l = (_RopeLeaf*)__r; | |
1264 | if (__l->_M_c_string != __l->_M_data && __l->_M_c_string != 0) | |
1265 | __clrstack[__csptr++] = __l; | |
1266 | while (__csptr > 0) { | |
1267 | -- __csptr; | |
1268 | _RopeRep* __d = __clrstack[__csptr]; | |
1269 | __d->_M_free_c_string(); | |
1270 | __d->_M_c_string = 0; | |
1271 | } | |
1272 | return __l->_M_data + __i; | |
1273 | } | |
1274 | case _RopeRep::_S_function: | |
1275 | case _RopeRep::_S_substringfn: | |
1276 | return 0; | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | # endif /* __GC */ | |
1281 | ||
1282 | // The following could be implemented trivially using | |
1283 | // lexicographical_compare_3way. | |
1284 | // We do a little more work to avoid dealing with rope iterators for | |
1285 | // flat strings. | |
1286 | template <class _CharT, class _Alloc> | |
1287 | int | |
1288 | rope<_CharT,_Alloc>::_S_compare (const _RopeRep* __left, | |
1289 | const _RopeRep* __right) | |
1290 | { | |
1291 | size_t __left_len; | |
1292 | size_t __right_len; | |
1293 | ||
1294 | if (0 == __right) return 0 != __left; | |
1295 | if (0 == __left) return -1; | |
1296 | __left_len = __left->_M_size; | |
1297 | __right_len = __right->_M_size; | |
1298 | if (_RopeRep::_S_leaf == __left->_M_tag) { | |
1299 | _RopeLeaf* __l = (_RopeLeaf*) __left; | |
1300 | if (_RopeRep::_S_leaf == __right->_M_tag) { | |
1301 | _RopeLeaf* __r = (_RopeLeaf*) __right; | |
1302 | return lexicographical_compare_3way( | |
1303 | __l->_M_data, __l->_M_data + __left_len, | |
1304 | __r->_M_data, __r->_M_data + __right_len); | |
1305 | } else { | |
1306 | const_iterator __rstart(__right, 0); | |
1307 | const_iterator __rend(__right, __right_len); | |
1308 | return lexicographical_compare_3way( | |
1309 | __l->_M_data, __l->_M_data + __left_len, | |
1310 | __rstart, __rend); | |
1311 | } | |
1312 | } else { | |
1313 | const_iterator __lstart(__left, 0); | |
1314 | const_iterator __lend(__left, __left_len); | |
1315 | if (_RopeRep::_S_leaf == __right->_M_tag) { | |
1316 | _RopeLeaf* __r = (_RopeLeaf*) __right; | |
1317 | return lexicographical_compare_3way( | |
1318 | __lstart, __lend, | |
1319 | __r->_M_data, __r->_M_data + __right_len); | |
1320 | } else { | |
1321 | const_iterator __rstart(__right, 0); | |
1322 | const_iterator __rend(__right, __right_len); | |
1323 | return lexicographical_compare_3way( | |
1324 | __lstart, __lend, | |
1325 | __rstart, __rend); | |
1326 | } | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | // Assignment to reference proxies. | |
1331 | template <class _CharT, class _Alloc> | |
1332 | _Rope_char_ref_proxy<_CharT, _Alloc>& | |
1333 | _Rope_char_ref_proxy<_CharT, _Alloc>::operator= (_CharT __c) { | |
1334 | _RopeRep* __old = _M_root->_M_tree_ptr; | |
1335 | # ifndef __GC | |
1336 | // First check for the case in which everything is uniquely | |
1337 | // referenced. In that case we can do this destructively. | |
1338 | _CharT* __ptr = _My_rope::_S_fetch_ptr(__old, _M_pos); | |
1339 | if (0 != __ptr) { | |
1340 | *__ptr = __c; | |
1341 | return *this; | |
1342 | } | |
1343 | # endif | |
1344 | _Self_destruct_ptr __left( | |
1345 | _My_rope::_S_substring(__old, 0, _M_pos)); | |
1346 | _Self_destruct_ptr __right( | |
1347 | _My_rope::_S_substring(__old, _M_pos+1, __old->_M_size)); | |
1348 | _Self_destruct_ptr __result_left( | |
1349 | _My_rope::_S_destr_concat_char_iter(__left, &__c, 1)); | |
1350 | ||
725dc051 BK |
1351 | _RopeRep* __result = |
1352 | _My_rope::_S_concat(__result_left, __right); | |
1353 | # ifndef __GC | |
725dc051 BK |
1354 | _RopeRep::_S_unref(__old); |
1355 | # endif | |
1356 | _M_root->_M_tree_ptr = __result; | |
1357 | return *this; | |
1358 | } | |
1359 | ||
1360 | template <class _CharT, class _Alloc> | |
1361 | inline _Rope_char_ref_proxy<_CharT, _Alloc>::operator _CharT () const | |
1362 | { | |
1363 | if (_M_current_valid) { | |
1364 | return _M_current; | |
1365 | } else { | |
1366 | return _My_rope::_S_fetch(_M_root->_M_tree_ptr, _M_pos); | |
1367 | } | |
1368 | } | |
1369 | template <class _CharT, class _Alloc> | |
1370 | _Rope_char_ptr_proxy<_CharT, _Alloc> | |
1371 | _Rope_char_ref_proxy<_CharT, _Alloc>::operator& () const { | |
1372 | return _Rope_char_ptr_proxy<_CharT, _Alloc>(*this); | |
1373 | } | |
1374 | ||
1375 | template <class _CharT, class _Alloc> | |
1376 | rope<_CharT, _Alloc>::rope(size_t __n, _CharT __c, | |
1377 | const allocator_type& __a) | |
1378 | : _Base(__a) | |
1379 | { | |
1380 | rope<_CharT,_Alloc> __result; | |
1381 | const size_t __exponentiate_threshold = 32; | |
1382 | size_t __exponent; | |
1383 | size_t __rest; | |
1384 | _CharT* __rest_buffer; | |
1385 | _RopeRep* __remainder; | |
1386 | rope<_CharT,_Alloc> __remainder_rope; | |
1387 | ||
1388 | if (0 == __n) | |
1389 | return; | |
1390 | ||
1391 | __exponent = __n / __exponentiate_threshold; | |
1392 | __rest = __n % __exponentiate_threshold; | |
1393 | if (0 == __rest) { | |
1394 | __remainder = 0; | |
1395 | } else { | |
1396 | __rest_buffer = _Data_allocate(_S_rounded_up_size(__rest)); | |
1397 | uninitialized_fill_n(__rest_buffer, __rest, __c); | |
1398 | _S_cond_store_eos(__rest_buffer[__rest]); | |
322821b9 | 1399 | try { |
725dc051 BK |
1400 | __remainder = _S_new_RopeLeaf(__rest_buffer, __rest, __a); |
1401 | } | |
322821b9 BK |
1402 | catch(...) |
1403 | { | |
1404 | _RopeRep::__STL_FREE_STRING(__rest_buffer, __rest, __a); | |
1405 | __throw_exception_again; | |
1406 | } | |
725dc051 BK |
1407 | } |
1408 | __remainder_rope._M_tree_ptr = __remainder; | |
1409 | if (__exponent != 0) { | |
1410 | _CharT* __base_buffer = | |
1411 | _Data_allocate(_S_rounded_up_size(__exponentiate_threshold)); | |
1412 | _RopeLeaf* __base_leaf; | |
1413 | rope __base_rope; | |
1414 | uninitialized_fill_n(__base_buffer, __exponentiate_threshold, __c); | |
1415 | _S_cond_store_eos(__base_buffer[__exponentiate_threshold]); | |
322821b9 | 1416 | try { |
725dc051 BK |
1417 | __base_leaf = _S_new_RopeLeaf(__base_buffer, |
1418 | __exponentiate_threshold, __a); | |
1419 | } | |
322821b9 BK |
1420 | catch(...) |
1421 | { | |
1422 | _RopeRep::__STL_FREE_STRING(__base_buffer, | |
1423 | __exponentiate_threshold, __a); | |
1424 | __throw_exception_again; | |
1425 | } | |
725dc051 BK |
1426 | __base_rope._M_tree_ptr = __base_leaf; |
1427 | if (1 == __exponent) { | |
1428 | __result = __base_rope; | |
725dc051 BK |
1429 | } else { |
1430 | __result = power(__base_rope, __exponent, | |
1431 | _Rope_Concat_fn<_CharT,_Alloc>()); | |
1432 | } | |
1433 | if (0 != __remainder) { | |
1434 | __result += __remainder_rope; | |
1435 | } | |
1436 | } else { | |
1437 | __result = __remainder_rope; | |
1438 | } | |
8fbc5ae7 MM |
1439 | this->_M_tree_ptr = __result._M_tree_ptr; |
1440 | this->_M_tree_ptr->_M_ref_nonnil(); | |
725dc051 BK |
1441 | } |
1442 | ||
1443 | template<class _CharT, class _Alloc> | |
1444 | _CharT rope<_CharT,_Alloc>::_S_empty_c_str[1]; | |
1445 | ||
1446 | template<class _CharT, class _Alloc> | |
1447 | const _CharT* rope<_CharT,_Alloc>::c_str() const { | |
8fbc5ae7 | 1448 | if (0 == this->_M_tree_ptr) { |
725dc051 BK |
1449 | _S_empty_c_str[0] = _S_eos((_CharT*)0); // Possibly redundant, |
1450 | // but probably fast. | |
1451 | return _S_empty_c_str; | |
1452 | } | |
1976f0d9 LR |
1453 | __gthread_mutex_lock (&this->_M_tree_ptr->_M_c_string_lock); |
1454 | __GC_CONST _CharT* __result = this->_M_tree_ptr->_M_c_string; | |
1455 | if (0 == __result) | |
1456 | { | |
1457 | size_t __s = size(); | |
1458 | __result = _Data_allocate(__s + 1); | |
1459 | _S_flatten(this->_M_tree_ptr, __result); | |
1460 | __result[__s] = _S_eos((_CharT*)0); | |
1461 | this->_M_tree_ptr->_M_c_string = __result; | |
725dc051 | 1462 | } |
1976f0d9 | 1463 | __gthread_mutex_unlock (&this->_M_tree_ptr->_M_c_string_lock); |
725dc051 BK |
1464 | return(__result); |
1465 | } | |
1466 | ||
1467 | template<class _CharT, class _Alloc> | |
1468 | const _CharT* rope<_CharT,_Alloc>::replace_with_c_str() { | |
8fbc5ae7 | 1469 | if (0 == this->_M_tree_ptr) { |
725dc051 BK |
1470 | _S_empty_c_str[0] = _S_eos((_CharT*)0); |
1471 | return _S_empty_c_str; | |
1472 | } | |
8fbc5ae7 MM |
1473 | __GC_CONST _CharT* __old_c_string = this->_M_tree_ptr->_M_c_string; |
1474 | if (_RopeRep::_S_leaf == this->_M_tree_ptr->_M_tag | |
1475 | && 0 != __old_c_string) { | |
725dc051 BK |
1476 | return(__old_c_string); |
1477 | } | |
1478 | size_t __s = size(); | |
1479 | _CharT* __result = _Data_allocate(_S_rounded_up_size(__s)); | |
8fbc5ae7 | 1480 | _S_flatten(this->_M_tree_ptr, __result); |
725dc051 | 1481 | __result[__s] = _S_eos((_CharT*)0); |
8fbc5ae7 MM |
1482 | this->_M_tree_ptr->_M_unref_nonnil(); |
1483 | this->_M_tree_ptr = _S_new_RopeLeaf(__result, __s, get_allocator()); | |
725dc051 BK |
1484 | return(__result); |
1485 | } | |
1486 | ||
1487 | // Algorithm specializations. More should be added. | |
1488 | ||
1489 | template<class _Rope_iterator> // was templated on CharT and Alloc | |
1490 | void // VC++ workaround | |
1491 | _Rope_rotate(_Rope_iterator __first, | |
1492 | _Rope_iterator __middle, | |
1493 | _Rope_iterator __last) | |
1494 | { | |
1495 | typedef typename _Rope_iterator::value_type _CharT; | |
1496 | typedef typename _Rope_iterator::_allocator_type _Alloc; | |
1497 | ||
725dc051 BK |
1498 | rope<_CharT,_Alloc>& __r(__first.container()); |
1499 | rope<_CharT,_Alloc> __prefix = __r.substr(0, __first.index()); | |
1500 | rope<_CharT,_Alloc> __suffix = | |
1501 | __r.substr(__last.index(), __r.size() - __last.index()); | |
1502 | rope<_CharT,_Alloc> __part1 = | |
1503 | __r.substr(__middle.index(), __last.index() - __middle.index()); | |
1504 | rope<_CharT,_Alloc> __part2 = | |
1505 | __r.substr(__first.index(), __middle.index() - __first.index()); | |
1506 | __r = __prefix; | |
1507 | __r += __part1; | |
1508 | __r += __part2; | |
1509 | __r += __suffix; | |
1510 | } | |
1511 | ||
1512 | #if !defined(__GNUC__) | |
1513 | // Appears to confuse g++ | |
1514 | inline void rotate(_Rope_iterator<char,__STL_DEFAULT_ALLOCATOR(char)> __first, | |
1515 | _Rope_iterator<char,__STL_DEFAULT_ALLOCATOR(char)> __middle, | |
1516 | _Rope_iterator<char,__STL_DEFAULT_ALLOCATOR(char)> __last) { | |
1517 | _Rope_rotate(__first, __middle, __last); | |
1518 | } | |
1519 | #endif | |
1520 | ||
1521 | # if 0 | |
1522 | // Probably not useful for several reasons: | |
1523 | // - for SGIs 7.1 compiler and probably some others, | |
1524 | // this forces lots of rope<wchar_t, ...> instantiations, creating a | |
1525 | // code bloat and compile time problem. (Fixed in 7.2.) | |
1526 | // - wchar_t is 4 bytes wide on most UNIX platforms, making it unattractive | |
1527 | // for unicode strings. Unsigned short may be a better character | |
1528 | // type. | |
1529 | inline void rotate( | |
1530 | _Rope_iterator<wchar_t,__STL_DEFAULT_ALLOCATOR(char)> __first, | |
1531 | _Rope_iterator<wchar_t,__STL_DEFAULT_ALLOCATOR(char)> __middle, | |
1532 | _Rope_iterator<wchar_t,__STL_DEFAULT_ALLOCATOR(char)> __last) { | |
1533 | _Rope_rotate(__first, __middle, __last); | |
1534 | } | |
1535 | # endif | |
1536 | ||
e538847e | 1537 | } // namespace __gnu_cxx |
725dc051 BK |
1538 | |
1539 | // Local Variables: | |
1540 | // mode:C++ | |
1541 | // End: |