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1// -*- C++ -*-
2
f5886803 3// Copyright (C) 2005, 2006, 2009, 2011 Free Software Foundation, Inc.
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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 terms
7// of the GNU General Public License as published by the Free Software
748086b7 8// Foundation; either version 3, or (at your option) any later
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9// version.
10
11// This library is distributed in the hope that it will be useful, but
12// WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14// General Public License for more details.
15
748086b7
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16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
4569a895 19
748086b7
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20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
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24
25// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
26
27// Permission to use, copy, modify, sell, and distribute this software
28// is hereby granted without fee, provided that the above copyright
29// notice appears in all copies, and that both that copyright notice
30// and this permission notice appear in supporting documentation. None
31// of the above authors, nor IBM Haifa Research Laboratories, make any
32// representation about the suitability of this software for any
33// purpose. It is provided "as is" without express or implied
34// warranty.
35
36/**
a345e45d 37 * @file ov_tree_map_/ov_tree_map_.hpp
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38 * Contains an implementation class for ov_tree_.
39 */
40
41#include <map>
42#include <set>
a345e45d 43#include <ext/pb_ds/exception.hpp>
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44#include <ext/pb_ds/tree_policy.hpp>
45#include <ext/pb_ds/detail/eq_fn/eq_by_less.hpp>
46#include <ext/pb_ds/detail/types_traits.hpp>
4569a895 47#include <ext/pb_ds/detail/type_utils.hpp>
4569a895 48#include <ext/pb_ds/detail/tree_trace_base.hpp>
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49#ifdef _GLIBCXX_DEBUG
50#include <ext/pb_ds/detail/debug_map_base.hpp>
51#endif
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52#include <utility>
53#include <functional>
54#include <algorithm>
55#include <vector>
56#include <assert.h>
47bea7b8 57#include <debug/debug.h>
4569a895 58
5e11f978 59namespace __gnu_pbds
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60{
61 namespace detail
62 {
4569a895 63#ifdef PB_DS_DATA_TRUE_INDICATOR
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64#define PB_DS_OV_TREE_NAME ov_tree_map
65#define PB_DS_CONST_NODE_ITERATOR_NAME ov_tree_node_const_iterator_map
66#endif
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67
68#ifdef PB_DS_DATA_FALSE_INDICATOR
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69#define PB_DS_OV_TREE_NAME ov_tree_set
70#define PB_DS_CONST_NODE_ITERATOR_NAME ov_tree_node_const_iterator_set
71#endif
4569a895 72
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73#define PB_DS_CLASS_T_DEC \
74 template<typename Key, typename Mapped, typename Cmp_Fn, \
75 typename Node_And_It_Traits, typename _Alloc>
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76
77#define PB_DS_CLASS_C_DEC \
a345e45d 78 PB_DS_OV_TREE_NAME<Key, Mapped, Cmp_Fn, Node_And_It_Traits, _Alloc>
47bea7b8 79
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80#define PB_DS_OV_TREE_TRAITS_BASE \
81 types_traits<Key, Mapped, _Alloc, false>
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82
83#ifdef _GLIBCXX_DEBUG
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84#define PB_DS_DEBUG_MAP_BASE_C_DEC \
85 debug_map_base<Key, eq_by_less<Key, Cmp_Fn>, \
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86 typename _Alloc::template rebind<Key>::other::const_reference>
87#endif
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88
89#ifdef PB_DS_TREE_TRACE
47bea7b8 90#define PB_DS_TREE_TRACE_BASE_C_DEC \
a345e45d 91 tree_trace_base<typename Node_And_It_Traits::node_const_iterator, \
f5886803 92 typename Node_And_It_Traits::node_iterator, \
a345e45d 93 Cmp_Fn, false, _Alloc>
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94#endif
95
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96#ifndef PB_DS_CHECK_KEY_EXISTS
97# error Missing definition
98#endif
4569a895 99
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100 /// Ordered-vector tree associative-container.
101 template<typename Key, typename Mapped, typename Cmp_Fn,
102 typename Node_And_It_Traits, typename _Alloc>
103 class PB_DS_OV_TREE_NAME :
47bea7b8 104#ifdef _GLIBCXX_DEBUG
551fe1a2 105 protected PB_DS_DEBUG_MAP_BASE_C_DEC,
a345e45d 106#endif
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107#ifdef PB_DS_TREE_TRACE
108 public PB_DS_TREE_TRACE_BASE_C_DEC,
a345e45d 109#endif
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110 public Cmp_Fn,
111 public Node_And_It_Traits::node_update,
a345e45d 112 public PB_DS_OV_TREE_TRAITS_BASE
4569a895 113 {
4569a895 114 private:
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115 typedef PB_DS_OV_TREE_TRAITS_BASE traits_base;
116 typedef Node_And_It_Traits traits_type;
4569a895 117
1b24692f 118 typedef typename remove_const<typename traits_base::value_type>::type non_const_value_type;
4569a895 119
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120 typedef typename _Alloc::template rebind<non_const_value_type>::other value_allocator;
121 typedef typename value_allocator::pointer value_vector;
4569a895 122
47bea7b8 123#ifdef _GLIBCXX_DEBUG
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124 typedef PB_DS_DEBUG_MAP_BASE_C_DEC debug_base;
125#endif
126
127#ifdef PB_DS_TREE_TRACE
128 typedef PB_DS_TREE_TRACE_BASE_C_DEC trace_base;
129#endif
4569a895 130
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131 typedef typename traits_base::pointer mapped_pointer_;
132 typedef typename traits_base::const_pointer mapped_const_pointer_;
4569a895 133
a345e45d 134 typedef typename traits_type::metadata_type metadata_type;
4569a895 135
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136 typedef typename _Alloc::template rebind<metadata_type>::other metadata_allocator;
137 typedef typename metadata_allocator::pointer metadata_pointer;
138 typedef typename metadata_allocator::const_reference metadata_const_reference;
139 typedef typename metadata_allocator::reference metadata_reference;
4569a895 140
a345e45d 141 typedef typename traits_type::null_node_update_pointer
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142 null_node_update_pointer;
143
144 public:
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145 typedef ov_tree_tag container_category;
146 typedef _Alloc allocator_type;
147 typedef typename _Alloc::size_type size_type;
148 typedef typename _Alloc::difference_type difference_type;
149 typedef Cmp_Fn cmp_fn;
150
151 typedef typename traits_base::key_type key_type;
152 typedef typename traits_base::key_pointer key_pointer;
153 typedef typename traits_base::key_const_pointer key_const_pointer;
154 typedef typename traits_base::key_reference key_reference;
155 typedef typename traits_base::key_const_reference key_const_reference;
156 typedef typename traits_base::mapped_type mapped_type;
157 typedef typename traits_base::mapped_pointer mapped_pointer;
158 typedef typename traits_base::mapped_const_pointer mapped_const_pointer;
159 typedef typename traits_base::mapped_reference mapped_reference;
160 typedef typename traits_base::mapped_const_reference mapped_const_reference;
161 typedef typename traits_base::value_type value_type;
162 typedef typename traits_base::pointer pointer;
163 typedef typename traits_base::const_pointer const_pointer;
164 typedef typename traits_base::reference reference;
165 typedef typename traits_base::const_reference const_reference;
166
167 typedef const_pointer point_const_iterator;
4569a895 168#ifdef PB_DS_DATA_TRUE_INDICATOR
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169 typedef pointer point_iterator;
170#else
171 typedef point_const_iterator point_iterator;
172#endif
4569a895 173
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174 typedef point_iterator iterator;
175 typedef point_const_iterator const_iterator;
176
177 /// Conditional destructor.
178 template<typename Size_Type>
179 class cond_dtor
180 {
181 public:
182 cond_dtor(value_vector a_vec, iterator& r_last_it,
183 Size_Type total_size)
184 : m_a_vec(a_vec), m_r_last_it(r_last_it), m_max_size(total_size),
185 m_no_action(false)
186 { }
187
188 ~cond_dtor()
189 {
190 if (m_no_action)
191 return;
192 iterator it = m_a_vec;
193 while (it != m_r_last_it)
194 {
195 it->~value_type();
196 ++it;
197 }
198
199 if (m_max_size > 0)
200 value_allocator().deallocate(m_a_vec, m_max_size);
201 }
4569a895 202
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203 inline void
204 set_no_action()
205 { m_no_action = true; }
206
207 protected:
208 value_vector m_a_vec;
209 iterator& m_r_last_it;
210 const Size_Type m_max_size;
211 bool m_no_action;
212 };
213
214 typedef typename traits_type::node_update node_update;
215 typedef typename traits_type::node_iterator node_iterator;
216 typedef typename traits_type::node_const_iterator node_const_iterator;
4569a895 217
4569a895 218
a345e45d 219 PB_DS_OV_TREE_NAME();
4569a895 220
a345e45d 221 PB_DS_OV_TREE_NAME(const Cmp_Fn&);
4569a895 222
a345e45d 223 PB_DS_OV_TREE_NAME(const Cmp_Fn&, const node_update&);
4569a895 224
a345e45d 225 PB_DS_OV_TREE_NAME(const PB_DS_CLASS_C_DEC&);
4569a895 226
a345e45d 227 ~PB_DS_OV_TREE_NAME();
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228
229 void
1b24692f 230 swap(PB_DS_CLASS_C_DEC&);
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231
232 template<typename It>
233 void
1b24692f 234 copy_from_range(It, It);
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235
236 inline size_type
237 max_size() const;
238
239 inline bool
240 empty() const;
241
242 inline size_type
243 size() const;
244
a345e45d 245 Cmp_Fn&
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246 get_cmp_fn();
247
a345e45d 248 const Cmp_Fn&
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249 get_cmp_fn() const;
250
251 inline mapped_reference
a345e45d 252 operator[](key_const_reference r_key)
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253 {
254#ifdef PB_DS_DATA_TRUE_INDICATOR
f5886803 255 PB_DS_ASSERT_VALID((*this))
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256 point_iterator it = lower_bound(r_key);
257 if (it != end() && !Cmp_Fn::operator()(r_key, PB_DS_V2F(*it)))
4569a895 258 {
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259 PB_DS_CHECK_KEY_EXISTS(r_key)
260 PB_DS_ASSERT_VALID((*this))
47bea7b8 261 return it->second;
4569a895 262 }
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263 return insert_new_val(it, std::make_pair(r_key, mapped_type()))->second;
264#else
4569a895 265 insert(r_key);
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266 return traits_base::s_null_type;
267#endif
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268 }
269
270 inline std::pair<point_iterator, bool>
271 insert(const_reference r_value)
272 {
f5886803 273 PB_DS_ASSERT_VALID((*this))
a345e45d 274 key_const_reference r_key = PB_DS_V2F(r_value);
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275 point_iterator it = lower_bound(r_key);
276
47bea7b8 277 if (it != end()&& !Cmp_Fn::operator()(r_key, PB_DS_V2F(*it)))
4569a895 278 {
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279 PB_DS_ASSERT_VALID((*this))
280 PB_DS_CHECK_KEY_EXISTS(r_key)
47bea7b8 281 return std::make_pair(it, false);
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282 }
283
47bea7b8 284 return std::make_pair(insert_new_val(it, r_value), true);
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285 }
286
287 inline point_iterator
a345e45d 288 lower_bound(key_const_reference r_key)
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289 {
290 pointer it = m_a_values;
4569a895 291 pointer e_it = m_a_values + m_size;
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292 while (it != e_it)
293 {
294 pointer mid_it = it + ((e_it - it) >> 1);
a345e45d 295 if (cmp_fn::operator()(PB_DS_V2F(*mid_it), r_key))
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296 it = ++mid_it;
297 else
298 e_it = mid_it;
299 }
47bea7b8 300 return it;
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301 }
302
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303 inline point_const_iterator
304 lower_bound(key_const_reference r_key) const
1b24692f 305 { return const_cast<PB_DS_CLASS_C_DEC& >(*this).lower_bound(r_key); }
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306
307 inline point_iterator
a345e45d 308 upper_bound(key_const_reference r_key)
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309 {
310 iterator pot_it = lower_bound(r_key);
a345e45d 311 if (pot_it != end() && !Cmp_Fn::operator()(r_key, PB_DS_V2F(*pot_it)))
4569a895 312 {
f5886803 313 PB_DS_CHECK_KEY_EXISTS(r_key)
3441f106 314 return ++pot_it;
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315 }
316
f5886803 317 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
47bea7b8 318 return pot_it;
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319 }
320
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321 inline point_const_iterator
322 upper_bound(key_const_reference r_key) const
3441f106 323 { return const_cast<PB_DS_CLASS_C_DEC&>(*this).upper_bound(r_key); }
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324
325 inline point_iterator
a345e45d 326 find(key_const_reference r_key)
4569a895 327 {
f5886803 328 PB_DS_ASSERT_VALID((*this))
47bea7b8 329 iterator pot_it = lower_bound(r_key);
3441f106 330 if (pot_it != end() && !Cmp_Fn::operator()(r_key, PB_DS_V2F(*pot_it)))
4569a895 331 {
f5886803 332 PB_DS_CHECK_KEY_EXISTS(r_key)
3441f106 333 return pot_it;
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334 }
335
f5886803 336 PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
47bea7b8 337 return end();
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338 }
339
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340 inline point_const_iterator
341 find(key_const_reference r_key) const
342 { return (const_cast<PB_DS_CLASS_C_DEC&>(*this).find(r_key)); }
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343
344 bool
a345e45d 345 erase(key_const_reference);
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346
347 template<typename Pred>
348 inline size_type
1b24692f 349 erase_if(Pred);
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350
351 inline iterator
352 erase(iterator it)
47bea7b8 353 { return erase_imp<iterator>(it); }
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354
355 void
356 clear();
357
358 void
1b24692f 359 join(PB_DS_CLASS_C_DEC&);
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360
361 void
a345e45d 362 split(key_const_reference, PB_DS_CLASS_C_DEC&);
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363
364 inline iterator
365 begin()
47bea7b8 366 { return m_a_values; }
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367
368 inline const_iterator
369 begin() const
47bea7b8 370 { return m_a_values; }
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371
372 inline iterator
373 end()
47bea7b8 374 { return m_end_it; }
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375
376 inline const_iterator
377 end() const
47bea7b8 378 { return m_end_it; }
4569a895 379
a345e45d 380 inline node_const_iterator
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381 node_begin() const;
382
a345e45d 383 inline node_const_iterator
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384 node_end() const;
385
386 inline node_iterator
387 node_begin();
388
389 inline node_iterator
390 node_end();
391
392 private:
393
394 inline void
a345e45d 395 update(node_iterator, null_node_update_pointer);
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396
397 template<typename Node_Update>
398 void
1b24692f 399 update(node_iterator, Node_Update*);
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400
401 void
402 reallocate_metadata(null_node_update_pointer, size_type);
403
404 template<typename Node_Update_>
405 void
1b24692f 406 reallocate_metadata(Node_Update_*, size_type);
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407
408 template<typename It>
409 void
1b24692f 410 copy_from_ordered_range(It, It);
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411
412 void
1b24692f 413 value_swap(PB_DS_CLASS_C_DEC&);
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414
415 template<typename It>
416 void
1b24692f 417 copy_from_ordered_range(It, It, It, It);
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418
419 template<typename Ptr>
420 inline static Ptr
421 mid_pointer(Ptr p_begin, Ptr p_end)
422 {
47bea7b8 423 _GLIBCXX_DEBUG_ASSERT(p_end >= p_begin);
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424 return (p_begin + (p_end - p_begin) / 2);
425 }
426
427 inline iterator
428 insert_new_val(iterator it, const_reference r_value)
429 {
4569a895 430#ifdef PB_DS_REGRESSION
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431 typename _Alloc::group_adjustor adjust(m_size);
432#endif
4569a895 433
f5886803 434 PB_DS_CHECK_KEY_DOES_NOT_EXIST(PB_DS_V2F(r_value))
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435
436 value_vector a_values = s_value_alloc.allocate(m_size + 1);
437
438 iterator source_it = begin();
439 iterator source_end_it = end();
440 iterator target_it = a_values;
441 iterator ret_it;
442
443 cond_dtor<size_type> cd(a_values, target_it, m_size + 1);
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444 while (source_it != it)
445 {
a345e45d 446 new (const_cast<void*>(static_cast<const void*>(target_it)))
4569a895 447 value_type(*source_it++);
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448 ++target_it;
449 }
450
a345e45d 451 new (const_cast<void*>(static_cast<const void*>(ret_it = target_it)))
4569a895 452 value_type(r_value);
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453 ++target_it;
454
455 while (source_it != source_end_it)
456 {
a345e45d 457 new (const_cast<void*>(static_cast<const void*>(target_it)))
4569a895 458 value_type(*source_it++);
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459 ++target_it;
460 }
461
a345e45d 462 reallocate_metadata((node_update*)this, m_size + 1);
4569a895 463 cd.set_no_action();
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464 if (m_size != 0)
465 {
466 cond_dtor<size_type> cd1(m_a_values, m_end_it, m_size);
467 }
468
469 ++m_size;
4569a895 470 m_a_values = a_values;
4569a895 471 m_end_it = m_a_values + m_size;
551fe1a2 472 _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_value)));
4569a895 473 update(node_begin(), (node_update* )this);
f5886803 474 PB_DS_ASSERT_VALID((*this))
47bea7b8 475 return ret_it;
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476 }
477
47bea7b8 478#ifdef _GLIBCXX_DEBUG
4569a895 479 void
a345e45d 480 assert_valid(const char*, int) const;
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481
482 void
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483 assert_iterators(const char*, int) const;
484#endif
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485
486 template<typename It>
487 It
a345e45d 488 erase_imp(It);
4569a895 489
a345e45d 490 inline node_const_iterator
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491 PB_DS_node_begin_imp() const;
492
a345e45d 493 inline node_const_iterator
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494 PB_DS_node_end_imp() const;
495
496 inline node_iterator
497 PB_DS_node_begin_imp();
498
499 inline node_iterator
500 PB_DS_node_end_imp();
501
502 private:
a345e45d 503 static value_allocator s_value_alloc;
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504 static metadata_allocator s_metadata_alloc;
505
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506 value_vector m_a_values;
507 metadata_pointer m_a_metadata;
508 iterator m_end_it;
509 size_type m_size;
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510 };
511
512#include <ext/pb_ds/detail/ov_tree_map_/constructors_destructor_fn_imps.hpp>
513#include <ext/pb_ds/detail/ov_tree_map_/iterators_fn_imps.hpp>
514#include <ext/pb_ds/detail/ov_tree_map_/debug_fn_imps.hpp>
515#include <ext/pb_ds/detail/ov_tree_map_/erase_fn_imps.hpp>
516#include <ext/pb_ds/detail/ov_tree_map_/insert_fn_imps.hpp>
517#include <ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp>
518#include <ext/pb_ds/detail/ov_tree_map_/split_join_fn_imps.hpp>
519#include <ext/pb_ds/detail/bin_search_tree_/policy_access_fn_imps.hpp>
520
521#undef PB_DS_CLASS_C_DEC
4569a895 522#undef PB_DS_CLASS_T_DEC
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523#undef PB_DS_OV_TREE_NAME
524#undef PB_DS_OV_TREE_TRAITS_BASE
551fe1a2 525#undef PB_DS_DEBUG_MAP_BASE_C_DEC
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526#ifdef PB_DS_TREE_TRACE
527#undef PB_DS_TREE_TRACE_BASE_C_DEC
a345e45d 528#endif
4569a895 529#undef PB_DS_CONST_NODE_ITERATOR_NAME
4569a895 530 } // namespace detail
5e11f978 531} // namespace __gnu_pbds