+ /**
+ * @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;