// -*- C++ -*-
-// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+// Copyright (C) 2005-2022 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 2, or (at your option) any later
+// Foundation; either version 3, or (at your option) any later
// version.
// This library is distributed in the hope that it will be useful, but
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
-// You should have received a copy of the GNU General Public License
-// along with this library; see the file COPYING. If not, write to
-// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
-// MA 02111-1307, USA.
-
-// As a special exception, you may use this file as part of a free
-// software library without restriction. Specifically, if other files
-// instantiate templates or use macros or inline functions from this
-// file, or you compile this file and link it with other files to
-// produce an executable, this file does not by itself cause the
-// resulting executable to be covered by the GNU General Public
-// License. This exception does not however invalidate any other
-// reasons why the executable file might be covered by the GNU General
-// Public License.
+// 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.
// warranty.
/**
- * @file types_traits.hpp
+ * @file detail/types_traits.hpp
* Contains a traits class of types used by containers.
*/
#ifndef PB_DS_TYPES_TRAITS_HPP
#define PB_DS_TYPES_TRAITS_HPP
-#include <ext/pb_ds/detail/basic_types.hpp>
-#include <ext/pb_ds/detail/type_utils.hpp>
+#include <algorithm>
#include <utility>
+#include <ext/pb_ds/tag_and_trait.hpp>
+#include <ext/pb_ds/detail/type_utils.hpp>
+#include <memory>
-namespace pb_ds
+namespace __gnu_pbds
{
namespace detail
{
-
- template<typename Key, typename Mapped, class Allocator, bool Store_Extra>
- struct vt_base_selector
- {
- typedef value_type_base< Key, Mapped, Allocator, Store_Extra> type;
+ /**
+ * @addtogroup traits Traits
+ * @{
+ */
+
+ /// Primary template.
+ template<typename Key, typename Mapped>
+ struct no_throw_copies
+ {
+ static const bool __simple = is_simple<Key>::value
+ && is_simple<Mapped>::value;
+ typedef integral_constant<int, __simple> indicator;
+ };
+
+ /// Specialization.
+ template<typename Key>
+ struct no_throw_copies<Key, null_type>
+ {
+ typedef integral_constant<int, is_simple<Key>::value> indicator;
+ };
+
+
+ /// Stored value.
+ template<typename _Tv>
+ struct stored_value
+ {
+ typedef _Tv value_type;
+ value_type m_value;
+ };
+
+ /// Stored hash.
+ template<typename _Th>
+ struct stored_hash
+ {
+ typedef _Th hash_type;
+ hash_type m_hash;
+ };
+
+ /// Primary template for representation of stored data.
+ /// Two types of data can be stored: value and hash.
+ template<typename _Tv, typename _Th, bool Store_Hash>
+ struct stored_data
+ : public stored_value<_Tv>, public stored_hash<_Th>
+ { };
+
+ /// Specialization for representation of stored data of just value type.
+ template<typename _Tv, typename _Th>
+ struct stored_data<_Tv, _Th, false>
+ : public stored_value<_Tv>
+ { };
+
+ /// Choose value_type to be a key/value pair or just a key.
+ template<typename Key, typename Mapped>
+ struct select_value_type
+ {
+ typedef std::pair<const Key, Mapped> type;
+ };
+
+ /// Specialization for sets where the key is the value_type.
+ template<typename Key>
+ struct select_value_type<Key, null_type>
+ {
+ typedef Key type;
+ };
+
+ /// Base class for conditionally defining a static data member.
+ template<typename Key, typename Mapped, typename _Alloc, bool Store_Hash>
+ struct maybe_null_type
+ { };
+
+ /// Specialization that defines a static data member of type null_type.
+ template<typename Key,typename _Alloc, bool Store_Hash>
+ struct maybe_null_type<Key, null_type, _Alloc, Store_Hash>
+ {
+ static null_type s_null_type;
+ };
+
+ template<typename Key,typename _Alloc, bool Store_Hash>
+ null_type
+ maybe_null_type<Key, null_type, _Alloc, Store_Hash>::s_null_type;
+
+ /// Consistent API for accessing allocator-related types.
+ template<typename _Alloc, typename T>
+ struct rebind_traits
+#if __cplusplus >= 201103L
+ : std::allocator_traits<_Alloc>::template rebind_traits<T>
+ {
+ using reference = T&;
+ using const_reference = const T&;
+ };
+#else
+ : _Alloc::template rebind<T>::other
+ {
+ typedef typename _Alloc::template rebind<T>::other allocator_type;
+ };
+#endif
+
+
+ /// Traits for abstract types.
+ template<typename Key, typename Mapped, typename _Alloc, bool Store_Hash>
+ struct types_traits
+ : public maybe_null_type<Key, Mapped, _Alloc, Store_Hash>
+ {
+ public:
+ typedef typename _Alloc::size_type size_type;
+ typedef typename select_value_type<Key, Mapped>::type value_type;
+ typedef Key key_type;
+ typedef Mapped mapped_type;
+
+ private:
+ typedef rebind_traits<_Alloc, value_type> __rebind_va;
+ typedef rebind_traits<_Alloc, key_type> __rebind_ka;
+ typedef rebind_traits<_Alloc, mapped_type> __rebind_ma;
+
+ typedef no_throw_copies<Key, Mapped> __nothrowcopy;
+
+ public:
+ typedef typename __rebind_ma::pointer mapped_pointer;
+ typedef typename __rebind_ma::const_pointer mapped_const_pointer;
+ typedef typename __rebind_ma::reference mapped_reference;
+ typedef typename __rebind_ma::const_reference mapped_const_reference;
+
+ typedef typename __rebind_va::pointer pointer;
+ typedef typename __rebind_va::const_pointer const_pointer;
+ typedef typename __rebind_va::reference reference;
+ typedef typename __rebind_va::const_reference const_reference;
+
+ typedef stored_data<value_type, size_type, Store_Hash> stored_data_type;
+
+ typedef typename __rebind_ka::pointer key_pointer;
+ typedef typename __rebind_ka::const_pointer key_const_pointer;
+ typedef typename __rebind_ka::reference key_reference;
+ typedef typename __rebind_ka::const_reference key_const_reference;
+ typedef std::pair<size_type, size_type> comp_hash;
+ typedef integral_constant<int, Store_Hash> store_extra;
+ typedef typename __nothrowcopy::indicator no_throw_indicator;
+
+ store_extra m_store_extra_indicator;
+ no_throw_indicator m_no_throw_copies_indicator;
};
-
- template<typename Key, typename Mapped, class Allocator, bool Store_Extra>
- struct types_traits
- : public vt_base_selector<Key, Mapped, Allocator, Store_Extra>::type
- {
-
- typedef typename Allocator::template rebind< Key>::other key_allocator;
-
- typedef typename key_allocator::value_type key_type;
-
- typedef typename key_allocator::pointer key_pointer;
-
- typedef typename key_allocator::const_pointer const_key_pointer;
-
- typedef typename key_allocator::reference key_reference;
-
- typedef typename key_allocator::const_reference const_key_reference;
-
- typedef typename Allocator::size_type size_type;
-
- typedef false_type store_extra_false_type;
-
- typedef true_type store_extra_true_type;
-
- integral_constant<int,Store_Extra> m_store_extra_indicator;
-
- typedef false_type no_throw_copies_false_type;
-
- typedef true_type no_throw_copies_true_type;
-
- typename no_throw_copies<Key, Mapped>::indicator
- m_no_throw_copies_indicator;
-
- // Extra value (used when the extra value is stored with each value).
- typedef typename comp_hash_< size_type>::comp_hash comp_hash;
- };
-
+ ///@}
} // namespace detail
-} // namespace pb_ds
+} // namespace __gnu_pbds
-#endif // #ifndef PB_DS_TYPES_TRAITS_HPP
+#endif
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