libstdc++-v3/include/ext/pb_assoc/detail/value_type_adapter/value_type_adapter.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc.
   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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  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
  30 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  31
  32 // Permission to use, copy, modify, sell, and distribute this software
  33 // is hereby granted without fee, provided that the above copyright
  34 // notice appears in all copies, and that both that copyright notice and
  35 // this permission notice appear in supporting documentation. None of
  36 // the above authors, nor IBM Haifa Research Laboratories, make any
  37 // representation about the suitability of this software for any
  38 // purpose. It is provided "as is" without express or implied warranty.
  39
  40 /**
  41  * @file value_type_adapter.hpp
  42  * Contains an adapter of mapping levels.
  43  */
  44
  45 #ifndef VALUE_TYPE_ADAPTER_HPP
  46 #define VALUE_TYPE_ADAPTER_HPP
  47
  48 #include <ext/pb_assoc/detail/value_type_adapter/ref_pair.hpp>
  49 #include <ext/pb_assoc/detail/assoc_cntnr_base.hpp>
  50 #include <ext/pb_assoc/detail/value_type_adapter/invalidation_guarantee_selector.hpp>
  51 #include <ext/pb_assoc/detail/type_utils.hpp>
  52 #include <utility>
  53 #include <algorithm>
  54 #include <tr1/type_traits>  // for aligned_storage/alignment_of
  55
  56 namespace pb_assoc
  57 {
  58
  59   namespace detail
  60   {
  61
  62 #define PB_ASSOC_STATIC_ASSERT(UNIQUE, E) \
  63         typedef \
  64                 pb_assoc::detail::static_assert_dummy_class< \
  65                         sizeof(pb_assoc::detail::static_assert<(bool)(E)>)> \
  66                         UNIQUE##static_assert_type
  67
  68 #define PB_ASSOC_CLASS_T_DEC \
  69         template< \
  70                 typename Key, \
  71                 typename Data, \
  72                 class DS_Tag, \
  73                 class Policy_Tl, \
  74                 class Allocator, \
  75                 int Mapping_Level>
  76
  77 #define PB_ASSOC_CLASS_C_DEC \
  78         value_type_adapter< \
  79                 Key, \
  80                 Data, \
  81                 DS_Tag, \
  82                 Policy_Tl, \
  83                 Allocator, \
  84                 Mapping_Level>
  85
  86 #define PB_ASSOC_BASE_C_DEC \
  87         cond_type< \
  88                 Mapping_Level != 1, \
  89                 value_type_adapter< \
  90                         Key, \
  91                         Data, \
  92                         DS_Tag, \
  93                         Policy_Tl, \
  94                         Allocator, \
  95                         Mapping_Level - 1>, \
  96                 typename assoc_cntnr_base< \
  97                         Key, \
  98                         Data, \
  99                         DS_Tag, \
 100                         Policy_Tl, \
 101                         Allocator>::type>::type
 102
 103     template<typename Key,
 104              typename Data,
 105              class DS_Tag,
 106              class Policy_Tl,
 107              class Allocator,
 108              int Mapping_Level>
 109     struct value_type_adapter : public PB_ASSOC_BASE_C_DEC
 110     {
 111
 112     private:
 113       typedef typename PB_ASSOC_BASE_C_DEC my_base;
 114
 115       typedef typename my_base::data_type my_base_data_type;
 116
 117       enum
 118         {
 119           same_alloc_type =
 120           is_same_type<
 121           typename my_base::allocator::template rebind<
 122           char>::other,
 123           typename my_base_data_type::allocator::template rebind<
 124           char>::other>::value
 125         };
 126
 127       PB_ASSOC_STATIC_ASSERT(wrong_level, Mapping_Level > 0);
 128
 129       PB_ASSOC_STATIC_ASSERT(must_be_same_alloc, same_alloc_type);
 130
 131 #include <ext/pb_assoc/detail/value_type_adapter/value_type_traits.hpp>
 132 #include <ext/pb_assoc/detail/value_type_adapter/it_value_type_traits.hpp>
 133
 134       typedef
 135       it_value_type_traits_<
 136         typename base_it_key_type<
 137         my_base,
 138         Mapping_Level == 1>::type,
 139         typename my_base_data_type::const_key_reference,
 140         typename cond_type<
 141         is_same_type<
 142         typename my_base_data_type::data_type,
 143         null_data_type>::value,
 144         null_data_type,
 145         typename my_base_data_type::data_reference>::type,
 146         typename my_base_data_type::reference,
 147         typename my_base::allocator>
 148       it_value_type_traits_t;
 149
 150 #include <ext/pb_assoc/detail/value_type_adapter/iterator.hpp>
 151
 152       typedef
 153       value_type_traits_<
 154         typename my_base::key_type,
 155         typename my_base_data_type::key_type,
 156         typename my_base_data_type::data_type,
 157         typename my_base::allocator>
 158       value_type_traits_t;
 159
 160       enum
 161         {
 162           has_data =
 163           !is_same_type<
 164           typename my_base_data_type::data_type,
 165           null_data_type>::value
 166         };
 167
 168     public:
 169
 170       typedef typename Allocator::size_type size_type;
 171
 172       typedef typename Allocator::difference_type difference_type;
 173
 174       typedef typename my_base::allocator allocator;
 175
 176       typedef typename it_value_type_traits_t::key_type it_key_type;
 177
 178       typedef
 179       std::pair<
 180         typename my_base::key_type,
 181         typename my_base_data_type::key_type>
 182       key_type;
 183
 184       typedef
 185       typename allocator::template rebind<
 186         key_type>::other::reference
 187       key_reference;
 188
 189       typedef
 190       typename allocator::template rebind<
 191         key_type>::other::const_reference
 192       const_key_reference;
 193
 194       typedef
 195       typename allocator::template rebind<
 196         key_type>::other::pointer
 197       key_pointer;
 198
 199       typedef
 200       typename allocator::template rebind<
 201         key_type>::other::const_pointer
 202       const_key_pointer;
 203
 204       typedef typename my_base_data_type::data_type data_type;
 205
 206       typedef
 207       typename allocator::template rebind<
 208         data_type>::other::reference
 209       data_reference;
 210
 211       typedef
 212       typename allocator::template rebind<
 213         data_type>::other::const_reference
 214       const_data_reference;
 215
 216       typedef
 217       typename allocator::template rebind<
 218         data_type>::other::pointer
 219       data_pointer;
 220
 221       typedef
 222       typename allocator::template rebind<
 223         data_type>::other::const_pointer
 224       const_data_pointer;
 225
 226       typedef typename value_type_traits_t::value_type value_type;
 227
 228       typedef typename value_type_traits_t::reference reference;
 229
 230       typedef typename value_type_traits_t::const_reference const_reference;
 231
 232       typedef typename value_type_traits_t::pointer pointer;
 233
 234       typedef typename value_type_traits_t::const_pointer const_pointer;
 235
 236       typedef
 237       it_<
 238         typename my_base::const_find_iterator,
 239         typename my_base_data_type::const_find_iterator,
 240         has_data,
 241         true>
 242       const_find_iterator;
 243
 244       typedef
 245       it_<
 246         typename my_base::find_iterator,
 247         typename my_base_data_type::find_iterator,
 248         has_data,
 249         false>
 250       find_iterator;
 251
 252       typedef
 253       it_<
 254         typename my_base::const_iterator,
 255         typename my_base_data_type::const_iterator,
 256         has_data,
 257         true>
 258       const_iterator;
 259
 260       typedef
 261       it_<
 262         typename my_base::iterator,
 263         typename my_base_data_type::iterator,
 264         has_data,
 265         false>
 266       iterator;
 267
 268       enum
 269         {
 270           mapping_level = mapping_level_imp<
 271           typename my_base::given_data_type>::value -1
 272         };
 273
 274       // Tmp Ami rebind
 275
 276       typedef compound_ds_tag ds_category;
 277
 278       typedef
 279       typename cond_type<
 280         mapping_level == 1,
 281         typename cond_type<
 282         has_data,
 283         data_enabled_ms_tag,
 284         basic_ms_tag>::type,
 285         compound_data_enabled_ms_tag>::type
 286       ms_category;
 287
 288       typedef
 289       typename cond_type<
 290         Mapping_Level == 1,
 291         DS_Tag,
 292         compound_ds_tag>::type
 293       effective_base_ds_tag;
 294
 295       typedef ds_traits< my_base_data_type> base_data_ds_traits;
 296
 297       enum
 298         {
 299           erase_can_throw =
 300           base_data_ds_traits::erase_can_throw
 301         };
 302
 303       enum
 304         {
 305           order_preserving =
 306           order_preserving_imp<
 307           my_base,
 308           effective_base_ds_tag>::value&&
 309           base_data_ds_traits::order_preserving
 310         };
 311
 312       enum
 313         {
 314           erase_iterators =
 315           base_data_ds_traits::erase_iterators
 316         };
 317
 318       typedef
 319       typename ig_sel<
 320         typename invalidation_guarantee_imp<
 321         my_base,
 322         effective_base_ds_tag>::type,
 323         typename ds_traits<
 324         my_base_data_type>::invalidation_guarantee>::type
 325       invalidation_guarantee;
 326
 327       enum
 328         {
 329           reverse_iteration =
 330           reverse_iteration_imp<
 331           my_base,
 332           effective_base_ds_tag>::value&&
 333           base_data_ds_traits::reverse_iteration
 334         };
 335
 336       enum
 337         {
 338           split_join = false
 339         };
 340
 341     protected:
 342       typedef typename my_base_data_type::data_pointer erase_imp_ret_t;
 343
 344     private:
 345       inline const_key_reference
 346       extract_key_imp(const_reference r_val, int_to_type<true>)
 347       {
 348         return (r_val.first);
 349       }
 350
 351       inline const_key_reference
 352       extract_key_imp(const_reference r_val, int_to_type<false>)
 353       {
 354         return (r_val);
 355       }
 356
 357       inline it_key_type
 358       extract_key_imp(typename iterator::const_reference r_val, int_to_type<true>)
 359       {
 360         return (r_val.first);
 361       }
 362
 363       inline it_key_type
 364       extract_key_imp(typename iterator::const_reference r_val, int_to_type<false>)
 365       {
 366         return (r_val);
 367       }
 368
 369     public:
 370
 371       inline size_type
 372       size() const
 373       {
 374         return (std::distance(begin(), end()));
 375       }
 376
 377       inline size_type
 378       max_size() const
 379       {
 380         return (my_base::max_size());
 381       }
 382
 383       inline bool
 384       empty() const
 385       {
 386         return (size() == 0);
 387       }
 388
 389       inline static const_key_reference
 390       extract_key(const_reference r_val)
 391       {
 392         return (extract_key_imp(
 393                                 r_val,
 394                                 int_to_type<has_data>()));
 395       }
 396
 397       inline it_key_type
 398       extract_key(typename iterator::const_reference r_val)
 399       {
 400         return (extract_key_imp(
 401                                 r_val,
 402                                 int_to_type<has_data>()));
 403       }
 404
 405       inline std::pair<
 406         find_iterator,
 407         bool>
 408       insert(const_reference r_val)
 409       {
 410         typedef std::pair< typename my_base::find_iterator, bool> base_ins_ret;
 411
 412         // Tmp Ami
 413       }
 414
 415       inline data_reference
 416       operator[](const_key_reference r_key)
 417       {
 418         return (subscript_imp(r_key));
 419       }
 420
 421       inline const_find_iterator
 422       find(const_key_reference r_key) const
 423       {
 424         typename my_base::const_find_iterator it = my_base::find(r_key.first);
 425
 426         if (it == my_base::end())
 427           return (end());
 428
 429         typename my_base_data_type::const_find_iterator sec_it =
 430           it->second.find(r_key.second);
 431
 432         if (sec_it == it->second.end())
 433           return (end());
 434
 435         return (const_find_iterator(it, sec_it));
 436       }
 437
 438       inline find_iterator
 439       find(const_key_reference r_key)
 440       {
 441         typename my_base::find_iterator it = my_base::find(r_key.first);
 442
 443         if (it == my_base::end())
 444           return (end());
 445
 446         typename my_base_data_type::find_iterator sec_it =
 447           it->second.find(r_key.second);
 448
 449         if (sec_it == it->second.end())
 450           return (end());
 451
 452         return (find_iterator(it, my_base::end(), sec_it));
 453       }
 454
 455       inline const_data_reference
 456       operator[](const_key_reference r_key) const
 457       {
 458         return (my_base::operator[](r_key.first).operator[](r_key.second));
 459       }
 460
 461       inline size_type
 462       erase(const_key_reference r_key)
 463       {
 464         typename my_base::find_iterator it =
 465           my_base::find(r_key.first);
 466
 467         if (it == my_base::end())
 468           return (0);
 469
 470         if (it->second.find(r_key.second) == it->second.end())
 471           return (0);
 472
 473         it->second.erase(r_key.second);
 474
 475         return (1);
 476       }
 477
 478 #include <ext/pb_assoc/detail/value_type_adapter/erase_if_pred.hpp>
 479
 480       template<class Pred>
 481       inline size_type
 482       erase_if(Pred prd)
 483       {
 484         typename my_base::iterator it = my_base::begin();
 485
 486         typename my_base::iterator end_it = my_base::end();
 487
 488         size_type ersd = 0;
 489
 490         // Tmp Ami check erase can throw
 491
 492         while (it != end_it)
 493           {
 494             if (it->second.empty() == false)
 495               {
 496                 erase_if_pred<Pred> p(prd, it);
 497
 498                 ersd += it->second.erase_if(p);
 499               }
 500
 501             ++it;
 502           }
 503
 504         return (ersd);
 505       }
 506
 507       void
 508       clear()
 509       {
 510         typename my_base::iterator it = my_base::begin();
 511
 512         typename my_base::iterator end_it = my_base::end();
 513
 514         while (it != end_it)
 515           it->second.clear();
 516       }
 517
 518       inline const_iterator
 519       begin() const
 520       {
 521         typename my_base::const_iterator it = my_base::begin();
 522
 523         while (it != my_base::end()&&  it->second.size() == 0)
 524           ++it;
 525
 526         if (it == my_base::end())
 527           return (end());
 528
 529         return (const_iterator(it, my_base::end(), it->second.begin()));
 530       }
 531
 532       inline iterator
 533       begin()
 534       {
 535         typename my_base::iterator it = my_base::begin();
 536
 537         while (it != my_base::end()&&  it->second.size() == 0)
 538           ++it;
 539
 540         if (it == my_base::end())
 541           return (end());
 542
 543         return (iterator(it, my_base::end(), it->second.begin()));
 544       }
 545
 546       inline const_iterator
 547       end() const
 548       {
 549         return (const_iterator(my_base::end(), my_base::end()));
 550       }
 551
 552       inline iterator
 553       end()
 554       {
 555         return (iterator(my_base::end(), my_base::end()));
 556       }
 557
 558     protected:
 559
 560       virtual
 561       ~value_type_adapter()
 562       { }
 563
 564 #define PB_ASSOC_CLASS_NAME value_type_adapter
 565
 566 #define PB_ASSOC_DIRECT_BASE_C_DEC PB_ASSOC_BASE_C_DEC
 567
 568 #define PB_ASSOC_DIRECT_BASE_CAST_C_DEC \
 569         typename PB_ASSOC_DIRECT_BASE_C_DEC
 570
 571 #include <ext/pb_assoc/detail/constructors_destructor_fn_imps.hpp>
 572
 573 #undef PB_ASSOC_CLASS_NAME
 574
 575 #undef PB_ASSOC_DIRECT_BASE_C_DEC
 576
 577 #undef PB_ASSOC_DIRECT_BASE_CAST_C_DEC
 578
 579       data_reference
 580       subscript_imp(const_key_reference r_key)
 581       {
 582         return (my_base::subscript_imp(r_key.first)[r_key.second]);
 583       }
 584
 585     private:
 586       value_type_adapter&
 587       operator=(const value_type_adapter& r_other);
 588     };
 589
 590 #undef PB_ASSOC_CLASS_T_DEC
 591
 592 #undef PB_ASSOC_CLASS_C_DEC
 593
 594 #undef PB_ASSOC_BASE_C_DEC
 595
 596   } // namespace detail
 597
 598 } // namespace pb_assoc
 599
 600 #endif // #ifndef VALUE_TYPE_ADAPTER_HPP
 601