--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2007, 2009, 2010, 2011
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file cc_hash_table_map_/cc_ht_map_.hpp
+ * Contains an implementation class for cc_ht_map_.
+ */
+
+#include <utility>
+#include <iterator>
+#include <ext/pb_ds/detail/cond_dealtor.hpp>
+#include <ext/pb_ds/tag_and_trait.hpp>
+#include <ext/pb_ds/detail/hash_fn/ranged_hash_fn.hpp>
+#include <ext/pb_ds/detail/types_traits.hpp>
+#include <ext/pb_ds/exception.hpp>
+#include <ext/pb_ds/detail/eq_fn/hash_eq_fn.hpp>
+#ifdef _GLIBCXX_DEBUG
+#include <ext/pb_ds/detail/debug_map_base.hpp>
+#endif
+#ifdef PB_DS_HT_MAP_TRACE_
+#include <iostream>
+#endif
+#include <debug/debug.h>
+
+namespace __gnu_pbds
+{
+ namespace detail
+ {
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+#define PB_DS_CC_HASH_NAME cc_ht_map
+#endif
+
+#ifdef PB_DS_DATA_FALSE_INDICATOR
+#define PB_DS_CC_HASH_NAME cc_ht_set
+#endif
+
+#define PB_DS_CLASS_T_DEC \
+ template<typename Key, typename Mapped, typename Hash_Fn, \
+ typename Eq_Fn, typename _Alloc, bool Store_Hash, \
+ typename Comb_Hash_Fn, typename Resize_Policy>
+
+#define PB_DS_CLASS_C_DEC \
+ PB_DS_CC_HASH_NAME<Key, Mapped, Hash_Fn, Eq_Fn, _Alloc, \
+ Store_Hash, Comb_Hash_Fn, Resize_Policy>
+
+#define PB_DS_HASH_EQ_FN_C_DEC \
+ hash_eq_fn<Key, Eq_Fn, _Alloc, Store_Hash>
+
+#define PB_DS_RANGED_HASH_FN_C_DEC \
+ ranged_hash_fn<Key, Hash_Fn, _Alloc, Comb_Hash_Fn, Store_Hash>
+
+#define PB_DS_CC_HASH_TRAITS_BASE \
+ types_traits<Key, Mapped, _Alloc, Store_Hash>
+
+#ifdef _GLIBCXX_DEBUG
+#define PB_DS_DEBUG_MAP_BASE_C_DEC \
+ debug_map_base<Key, Eq_Fn, \
+ typename _Alloc::template rebind<Key>::other::const_reference>
+#endif
+
+
+ /**
+ * A collision-chaining hash-based container.
+ *
+ *
+ * @ingroup hash-detail
+ *
+ * @tparam Key Key type.
+ *
+ * @tparam Mapped Map type.
+ *
+ * @tparam Hash_Fn Hashing functor.
+ * Default is __gnu_cxx::hash.
+ *
+ * @tparam Eq_Fn Equal functor.
+ * Default std::equal_to<Key>
+ *
+ * @tparam _Alloc Allocator type.
+ *
+ * @tparam Store_Hash If key type stores extra metadata.
+ * Defaults to false.
+ *
+ * @tparam Comb_Hash_Fn Combining hash functor.
+ * If Hash_Fn is not null_type, then this
+ * is the ranged-hash functor; otherwise,
+ * this is the range-hashing functor.
+ * XXX(See Design::Hash-Based Containers::Hash Policies.)
+ * Default direct_mask_range_hashing.
+ *
+ * @tparam Resize_Policy Resizes hash.
+ * Defaults to hash_standard_resize_policy,
+ * using hash_exponential_size_policy and
+ * hash_load_check_resize_trigger.
+ *
+ *
+ * Bases are: detail::hash_eq_fn, Resize_Policy, detail::ranged_hash_fn,
+ * detail::types_traits. (Optional: detail::debug_map_base.)
+ */
+ template<typename Key,
+ typename Mapped,
+ typename Hash_Fn,
+ typename Eq_Fn,
+ typename _Alloc,
+ bool Store_Hash,
+ typename Comb_Hash_Fn,
+ typename Resize_Policy >
+ class PB_DS_CC_HASH_NAME:
+#ifdef _GLIBCXX_DEBUG
+ protected PB_DS_DEBUG_MAP_BASE_C_DEC,
+#endif
+ public PB_DS_HASH_EQ_FN_C_DEC,
+ public Resize_Policy,
+ public PB_DS_RANGED_HASH_FN_C_DEC,
+ public PB_DS_CC_HASH_TRAITS_BASE
+ {
+ private:
+ typedef PB_DS_CC_HASH_TRAITS_BASE traits_base;
+ typedef typename traits_base::comp_hash comp_hash;
+ typedef typename traits_base::value_type value_type_;
+ typedef typename traits_base::pointer pointer_;
+ typedef typename traits_base::const_pointer const_pointer_;
+ typedef typename traits_base::reference reference_;
+ typedef typename traits_base::const_reference const_reference_;
+
+ struct entry : public traits_base::stored_data_type
+ {
+ typename _Alloc::template rebind<entry>::other::pointer m_p_next;
+ };
+
+ typedef cond_dealtor<entry, _Alloc> cond_dealtor_t;
+
+ typedef typename _Alloc::template rebind<entry>::other entry_allocator;
+ typedef typename entry_allocator::pointer entry_pointer;
+ typedef typename entry_allocator::const_pointer const_entry_pointer;
+ typedef typename entry_allocator::reference entry_reference;
+ typedef typename entry_allocator::const_reference const_entry_reference;
+
+ typedef typename _Alloc::template rebind<entry_pointer>::other entry_pointer_allocator;
+ typedef typename entry_pointer_allocator::pointer entry_pointer_array;
+
+ typedef PB_DS_RANGED_HASH_FN_C_DEC ranged_hash_fn_base;
+ typedef PB_DS_HASH_EQ_FN_C_DEC hash_eq_fn_base;
+ typedef Resize_Policy resize_base;
+
+#ifdef _GLIBCXX_DEBUG
+ typedef PB_DS_DEBUG_MAP_BASE_C_DEC debug_base;
+#endif
+
+#define PB_DS_GEN_POS std::pair<entry_pointer, typename _Alloc::size_type>
+
+#include <ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp>
+#include <ext/pb_ds/detail/unordered_iterator/point_iterator.hpp>
+#include <ext/pb_ds/detail/unordered_iterator/const_iterator.hpp>
+#include <ext/pb_ds/detail/unordered_iterator/iterator.hpp>
+
+#undef PB_DS_GEN_POS
+
+ public:
+ typedef _Alloc allocator_type;
+ typedef typename _Alloc::size_type size_type;
+ typedef typename _Alloc::difference_type difference_type;
+ typedef Hash_Fn hash_fn;
+ typedef Eq_Fn eq_fn;
+ typedef Comb_Hash_Fn comb_hash_fn;
+ typedef Resize_Policy resize_policy;
+
+ /// Value stores hash, true or false.
+ enum
+ {
+ store_hash = Store_Hash
+ };
+
+ typedef typename traits_base::key_type key_type;
+ typedef typename traits_base::key_pointer key_pointer;
+ typedef typename traits_base::key_const_pointer key_const_pointer;
+ typedef typename traits_base::key_reference key_reference;
+ typedef typename traits_base::key_const_reference key_const_reference;
+ typedef typename traits_base::mapped_type mapped_type;
+ typedef typename traits_base::mapped_pointer mapped_pointer;
+ typedef typename traits_base::mapped_const_pointer mapped_const_pointer;
+ typedef typename traits_base::mapped_reference mapped_reference;
+ typedef typename traits_base::mapped_const_reference mapped_const_reference;
+ typedef typename traits_base::value_type value_type;
+ typedef typename traits_base::pointer pointer;
+ typedef typename traits_base::const_pointer const_pointer;
+ typedef typename traits_base::reference reference;
+ typedef typename traits_base::const_reference const_reference;
+
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ typedef point_iterator_ point_iterator;
+#endif
+
+#ifdef PB_DS_DATA_FALSE_INDICATOR
+ typedef point_const_iterator_ point_iterator;
+#endif
+
+ typedef point_const_iterator_ point_const_iterator;
+
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ typedef iterator_ iterator;
+#endif
+
+#ifdef PB_DS_DATA_FALSE_INDICATOR
+ typedef const_iterator_ iterator;
+#endif
+
+ typedef const_iterator_ const_iterator;
+
+ PB_DS_CC_HASH_NAME();
+
+ PB_DS_CC_HASH_NAME(const Hash_Fn&);
+
+ PB_DS_CC_HASH_NAME(const Hash_Fn&, const Eq_Fn&);
+
+ PB_DS_CC_HASH_NAME(const Hash_Fn&, const Eq_Fn&, const Comb_Hash_Fn&);
+
+ PB_DS_CC_HASH_NAME(const Hash_Fn&, const Eq_Fn&, const Comb_Hash_Fn&,
+ const Resize_Policy&);
+
+ PB_DS_CC_HASH_NAME(const PB_DS_CLASS_C_DEC&);
+
+ virtual
+ ~PB_DS_CC_HASH_NAME();
+
+ void
+ swap(PB_DS_CLASS_C_DEC&);
+
+ template<typename It>
+ void
+ copy_from_range(It, It);
+
+ void
+ initialize();
+
+ inline size_type
+ size() const;
+
+ inline size_type
+ max_size() const;
+
+ /// True if size() == 0.
+ inline bool
+ empty() const;
+
+ /// Return current hash_fn.
+ Hash_Fn&
+ get_hash_fn();
+
+ /// Return current const hash_fn.
+ const Hash_Fn&
+ get_hash_fn() const;
+
+ /// Return current eq_fn.
+ Eq_Fn&
+ get_eq_fn();
+
+ /// Return current const eq_fn.
+ const Eq_Fn&
+ get_eq_fn() const;
+
+ /// Return current comb_hash_fn.
+ Comb_Hash_Fn&
+ get_comb_hash_fn();
+
+ /// Return current const comb_hash_fn.
+ const Comb_Hash_Fn&
+ get_comb_hash_fn() const;
+
+ /// Return current resize_policy.
+ Resize_Policy&
+ get_resize_policy();
+
+ /// Return current const resize_policy.
+ const Resize_Policy&
+ get_resize_policy() const;
+
+ inline std::pair<point_iterator, bool>
+ insert(const_reference r_val)
+ { return insert_imp(r_val, traits_base::m_store_extra_indicator); }
+
+ inline mapped_reference
+ operator[](key_const_reference r_key)
+ {
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ return (subscript_imp(r_key, traits_base::m_store_extra_indicator));
+#else
+ insert(r_key);
+ return traits_base::s_null_type;
+#endif
+ }
+
+ inline point_iterator
+ find(key_const_reference);
+
+ inline point_const_iterator
+ find(key_const_reference) const;
+
+ inline point_iterator
+ find_end();
+
+ inline point_const_iterator
+ find_end() const;
+
+ inline bool
+ erase(key_const_reference);
+
+ template<typename Pred>
+ inline size_type
+ erase_if(Pred);
+
+ void
+ clear();
+
+ inline iterator
+ begin();
+
+ inline const_iterator
+ begin() const;
+
+ inline iterator
+ end();
+
+ inline const_iterator
+ end() const;
+
+#ifdef _GLIBCXX_DEBUG
+ void
+ assert_valid(const char*, int) const;
+#endif
+
+#ifdef PB_DS_HT_MAP_TRACE_
+ void
+ trace() const;
+#endif
+
+ private:
+ void
+ deallocate_all();
+
+ inline bool
+ do_resize_if_needed();
+
+ inline void
+ do_resize_if_needed_no_throw();
+
+ void
+ resize_imp(size_type);
+
+ void
+ do_resize(size_type);
+
+ void
+ resize_imp_no_exceptions(size_type, entry_pointer_array, size_type);
+
+ inline entry_pointer
+ resize_imp_no_exceptions_reassign_pointer(entry_pointer,
+ entry_pointer_array,
+ false_type);
+
+ inline entry_pointer
+ resize_imp_no_exceptions_reassign_pointer(entry_pointer,
+ entry_pointer_array,
+ true_type);
+
+ void
+ deallocate_links_in_list(entry_pointer);
+
+ inline entry_pointer
+ get_entry(const_reference, false_type);
+
+ inline entry_pointer
+ get_entry(const_reference, true_type);
+
+ inline void
+ rels_entry(entry_pointer);
+
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ inline mapped_reference
+ subscript_imp(key_const_reference r_key, false_type)
+ {
+ _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
+ const size_type pos = ranged_hash_fn_base::operator()(r_key);
+ entry_pointer p_e = m_entries[pos];
+ resize_base::notify_insert_search_start();
+
+ while (p_e != 0
+ && !hash_eq_fn_base::operator()(p_e->m_value.first, r_key))
+ {
+ resize_base::notify_insert_search_collision();
+ p_e = p_e->m_p_next;
+ }
+
+ resize_base::notify_insert_search_end();
+ if (p_e != 0)
+ {
+ PB_DS_CHECK_KEY_EXISTS(r_key)
+ return (p_e->m_value.second);
+ }
+
+ PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
+ return insert_new_imp(value_type(r_key, mapped_type()), pos)->second;
+ }
+
+ inline mapped_reference
+ subscript_imp(key_const_reference r_key, true_type)
+ {
+ _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
+ comp_hash pos_hash_pair = ranged_hash_fn_base::operator()(r_key);
+ entry_pointer p_e = m_entries[pos_hash_pair.first];
+ resize_base::notify_insert_search_start();
+ while (p_e != 0 &&
+ !hash_eq_fn_base::operator()(p_e->m_value.first, p_e->m_hash,
+ r_key, pos_hash_pair.second))
+ {
+ resize_base::notify_insert_search_collision();
+ p_e = p_e->m_p_next;
+ }
+
+ resize_base::notify_insert_search_end();
+ if (p_e != 0)
+ {
+ PB_DS_CHECK_KEY_EXISTS(r_key)
+ return p_e->m_value.second;
+ }
+
+ PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
+ return insert_new_imp(value_type(r_key, mapped_type()),
+ pos_hash_pair)->second;
+ }
+#endif
+
+ inline std::pair<point_iterator, bool>
+ insert_imp(const_reference, false_type);
+
+ inline std::pair<point_iterator, bool>
+ insert_imp(const_reference, true_type);
+
+ inline pointer
+ insert_new_imp(const_reference r_val, size_type pos)
+ {
+ if (do_resize_if_needed())
+ pos = ranged_hash_fn_base::operator()(PB_DS_V2F(r_val));
+
+ // Following lines might throw an exception.
+ entry_pointer p_e = get_entry(r_val,
+ traits_base::m_no_throw_copies_indicator);
+
+ // At this point no exceptions can be thrown.
+ p_e->m_p_next = m_entries[pos];
+ m_entries[pos] = p_e;
+ resize_base::notify_inserted(++m_num_used_e);
+
+ _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_val));)
+ _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
+ return &p_e->m_value;
+ }
+
+ inline pointer
+ insert_new_imp(const_reference r_val, comp_hash& r_pos_hash_pair)
+ {
+ // Following lines might throw an exception.
+ if (do_resize_if_needed())
+ r_pos_hash_pair = ranged_hash_fn_base::operator()(PB_DS_V2F(r_val));
+
+ entry_pointer p_e = get_entry(r_val,
+ traits_base::m_no_throw_copies_indicator);
+
+ // At this point no exceptions can be thrown.
+ p_e->m_hash = r_pos_hash_pair.second;
+ p_e->m_p_next = m_entries[r_pos_hash_pair.first];
+ m_entries[r_pos_hash_pair.first] = p_e;
+ resize_base::notify_inserted(++m_num_used_e);
+ _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_val));)
+ _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
+ return &p_e->m_value;
+ }
+
+ inline pointer
+ find_key_pointer(key_const_reference r_key, false_type)
+ {
+ entry_pointer p_e = m_entries[ranged_hash_fn_base::operator()(r_key)];
+ resize_base::notify_find_search_start();
+ while (p_e != 0 &&
+ !hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), r_key))
+ {
+ resize_base::notify_find_search_collision();
+ p_e = p_e->m_p_next;
+ }
+
+ resize_base::notify_find_search_end();
+
+#ifdef _GLIBCXX_DEBUG
+ if (p_e == 0)
+ PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
+ else
+ PB_DS_CHECK_KEY_EXISTS(r_key)
+#endif
+ return &p_e->m_value;
+ }
+
+ inline pointer
+ find_key_pointer(key_const_reference r_key, true_type)
+ {
+ comp_hash pos_hash_pair = ranged_hash_fn_base::operator()(r_key);
+ entry_pointer p_e = m_entries[pos_hash_pair.first];
+ resize_base::notify_find_search_start();
+ while (p_e != 0 &&
+ !hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value),
+ p_e->m_hash,
+ r_key, pos_hash_pair.second))
+ {
+ resize_base::notify_find_search_collision();
+ p_e = p_e->m_p_next;
+ }
+
+ resize_base::notify_find_search_end();
+
+#ifdef _GLIBCXX_DEBUG
+ if (p_e == 0)
+ PB_DS_CHECK_KEY_DOES_NOT_EXIST(r_key)
+ else
+ PB_DS_CHECK_KEY_EXISTS(r_key)
+#endif
+ return &p_e->m_value;
+ }
+
+ inline bool
+ erase_in_pos_imp(key_const_reference, size_type);
+
+ inline bool
+ erase_in_pos_imp(key_const_reference, const comp_hash&);
+
+ inline void
+ erase_entry_pointer(entry_pointer&);
+
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ void
+ inc_it_state(pointer& r_p_value,
+ std::pair<entry_pointer, size_type>& r_pos) const
+ {
+ inc_it_state((mapped_const_pointer& )r_p_value, r_pos);
+ }
+#endif
+
+ void
+ inc_it_state(const_pointer& r_p_value,
+ std::pair<entry_pointer, size_type>& r_pos) const
+ {
+ _GLIBCXX_DEBUG_ASSERT(r_p_value != 0);
+ r_pos.first = r_pos.first->m_p_next;
+ if (r_pos.first != 0)
+ {
+ r_p_value = &r_pos.first->m_value;
+ return;
+ }
+
+ for (++r_pos.second; r_pos.second < m_num_e; ++r_pos.second)
+ if (m_entries[r_pos.second] != 0)
+ {
+ r_pos.first = m_entries[r_pos.second];
+ r_p_value = &r_pos.first->m_value;
+ return;
+ }
+ r_p_value = 0;
+ }
+
+ void
+ get_start_it_state(pointer& r_p_value,
+ std::pair<entry_pointer, size_type>& r_pos) const
+ {
+ for (r_pos.second = 0; r_pos.second < m_num_e; ++r_pos.second)
+ if (m_entries[r_pos.second] != 0)
+ {
+ r_pos.first = m_entries[r_pos.second];
+ r_p_value = &r_pos.first->m_value;
+ return;
+ }
+ r_p_value = 0;
+ }
+
+#ifdef _GLIBCXX_DEBUG
+ void
+ assert_entry_pointer_array_valid(const entry_pointer_array,
+ const char*, int) const;
+
+ void
+ assert_entry_pointer_valid(const entry_pointer, true_type,
+ const char*, int) const;
+
+ void
+ assert_entry_pointer_valid(const entry_pointer, false_type,
+ const char*, int) const;
+#endif
+
+#ifdef PB_DS_HT_MAP_TRACE_
+ void
+ trace_list(const_entry_pointer) const;
+#endif
+
+ private:
+#ifdef PB_DS_DATA_TRUE_INDICATOR
+ friend class iterator_;
+#endif
+
+ friend class const_iterator_;
+
+ static entry_allocator s_entry_allocator;
+ static entry_pointer_allocator s_entry_pointer_allocator;
+ static iterator s_end_it;
+ static const_iterator s_const_end_it;
+ static point_iterator s_find_end_it;
+ static point_const_iterator s_const_find_end_it;
+
+ size_type m_num_e;
+ size_type m_num_used_e;
+ entry_pointer_array m_entries;
+
+ enum
+ {
+ store_hash_ok = !Store_Hash
+ || !is_same<Hash_Fn, __gnu_pbds::null_type>::value
+ };
+
+ PB_DS_STATIC_ASSERT(sth, store_hash_ok);
+ };
+
+#include <ext/pb_ds/detail/cc_hash_table_map_/constructor_destructor_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/entry_list_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/find_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/debug_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/policy_access_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/erase_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/iterators_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/insert_fn_imps.hpp>
+#include <ext/pb_ds/detail/cc_hash_table_map_/trace_fn_imps.hpp>
+
+#undef PB_DS_CLASS_T_DEC
+#undef PB_DS_CLASS_C_DEC
+#undef PB_DS_HASH_EQ_FN_C_DEC
+#undef PB_DS_RANGED_HASH_FN_C_DEC
+#undef PB_DS_CC_HASH_TRAITS_BASE
+#undef PB_DS_DEBUG_MAP_BASE_C_DEC
+#undef PB_DS_CC_HASH_NAME
+ } // namespace detail
+} // namespace __gnu_pbds
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