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-rw-r--r--include/unordered_set121
1 files changed, 121 insertions, 0 deletions
diff --git a/include/unordered_set b/include/unordered_set
index 9b8560da494af..b4e61da89eec2 100644
--- a/include/unordered_set
+++ b/include/unordered_set
@@ -127,6 +127,15 @@ public:
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
+ template<class H2, class P2>
+ void merge(unordered_set<Key, H2, P2, Allocator>& source); // C++17
+ template<class H2, class P2>
+ void merge(unordered_set<Key, H2, P2, Allocator>&& source); // C++17
+ template<class H2, class P2>
+ void merge(unordered_multiset<Key, H2, P2, Allocator>& source); // C++17
+ template<class H2, class P2>
+ void merge(unordered_multiset<Key, H2, P2, Allocator>&& source); // C++17
+
void swap(unordered_set&)
noexcept(allocator_traits<Allocator>::is_always_equal::value &&
noexcept(swap(declval<hasher&>(), declval<hasher&>())) &&
@@ -282,6 +291,15 @@ public:
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
+ template<class H2, class P2>
+ void merge(unordered_multiset<Key, H2, P2, Allocator>& source); // C++17
+ template<class H2, class P2>
+ void merge(unordered_multiset<Key, H2, P2, Allocator>&& source); // C++17
+ template<class H2, class P2>
+ void merge(unordered_set<Key, H2, P2, Allocator>& source); // C++17
+ template<class H2, class P2>
+ void merge(unordered_set<Key, H2, P2, Allocator>&& source); // C++17
+
void swap(unordered_multiset&)
noexcept(allocator_traits<Allocator>::is_always_equal::value &&
noexcept(swap(declval<hasher&>(), declval<hasher&>())) &&
@@ -321,6 +339,13 @@ template <class Value, class Hash, class Pred, class Alloc>
unordered_multiset<Value, Hash, Pred, Alloc>& y)
noexcept(noexcept(x.swap(y)));
+template <class K, class T, class H, class P, class A, class Predicate>
+ void erase_if(unordered_set<K, T, H, P, A>& c, Predicate pred); // C++20
+
+template <class K, class T, class H, class P, class A, class Predicate>
+ void erase_if(unordered_multiset<K, T, H, P, A>& c, Predicate pred); // C++20
+
+
template <class Value, class Hash, class Pred, class Alloc>
bool
operator==(const unordered_multiset<Value, Hash, Pred, Alloc>& x,
@@ -338,6 +363,7 @@ template <class Value, class Hash, class Pred, class Alloc>
#include <__hash_table>
#include <__node_handle>
#include <functional>
+#include <version>
#include <__debug>
@@ -347,6 +373,9 @@ template <class Value, class Hash, class Pred, class Alloc>
_LIBCPP_BEGIN_NAMESPACE_STD
+template <class _Value, class _Hash, class _Pred, class _Alloc>
+class unordered_multiset;
+
template <class _Value, class _Hash = hash<_Value>, class _Pred = equal_to<_Value>,
class _Alloc = allocator<_Value> >
class _LIBCPP_TEMPLATE_VIS unordered_set
@@ -362,6 +391,7 @@ public:
typedef const value_type& const_reference;
static_assert((is_same<value_type, typename allocator_type::value_type>::value),
"Invalid allocator::value_type");
+ static_assert(sizeof(__diagnose_unordered_container_requirements<_Value, _Hash, _Pred>(0)), "");
private:
typedef __hash_table<value_type, hasher, key_equal, allocator_type> __table;
@@ -384,6 +414,11 @@ public:
typedef __insert_return_type<iterator, node_type> insert_return_type;
#endif
+ template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
+ friend class _LIBCPP_TEMPLATE_VIS unordered_set;
+ template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
+ friend class _LIBCPP_TEMPLATE_VIS unordered_multiset;
+
_LIBCPP_INLINE_VISIBILITY
unordered_set()
_NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
@@ -589,6 +624,39 @@ public:
{
return __table_.template __node_handle_extract<node_type>(__it);
}
+
+ template<class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_set<key_type, _H2, _P2, allocator_type>& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ __table_.__node_handle_merge_unique(__source.__table_);
+ }
+ template<class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_set<key_type, _H2, _P2, allocator_type>&& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ __table_.__node_handle_merge_unique(__source.__table_);
+ }
+ template<class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ __table_.__node_handle_merge_unique(__source.__table_);
+ }
+ template<class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>&& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ __table_.__node_handle_merge_unique(__source.__table_);
+ }
#endif
_LIBCPP_INLINE_VISIBILITY
@@ -873,6 +941,13 @@ swap(unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
__x.swap(__y);
}
+#if _LIBCPP_STD_VER > 17
+template <class _Value, class _Hash, class _Pred, class _Alloc, class _Predicate>
+inline _LIBCPP_INLINE_VISIBILITY
+void erase_if(unordered_set<_Value, _Hash, _Pred, _Alloc>& __c, _Predicate __pred)
+{ __libcpp_erase_if_container(__c, __pred); }
+#endif
+
template <class _Value, class _Hash, class _Pred, class _Alloc>
bool
operator==(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
@@ -916,6 +991,7 @@ public:
typedef const value_type& const_reference;
static_assert((is_same<value_type, typename allocator_type::value_type>::value),
"Invalid allocator::value_type");
+ static_assert(sizeof(__diagnose_unordered_container_requirements<_Value, _Hash, _Pred>(0)), "");
private:
typedef __hash_table<value_type, hasher, key_equal, allocator_type> __table;
@@ -937,6 +1013,11 @@ public:
typedef __set_node_handle<typename __table::__node, allocator_type> node_type;
#endif
+ template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
+ friend class _LIBCPP_TEMPLATE_VIS unordered_set;
+ template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
+ friend class _LIBCPP_TEMPLATE_VIS unordered_multiset;
+
_LIBCPP_INLINE_VISIBILITY
unordered_multiset()
_NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
@@ -1101,6 +1182,39 @@ public:
{
return __table_.template __node_handle_extract<node_type>(__key);
}
+
+ template <class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ return __table_.__node_handle_merge_multi(__source.__table_);
+ }
+ template <class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>&& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ return __table_.__node_handle_merge_multi(__source.__table_);
+ }
+ template <class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_set<key_type, _H2, _P2, allocator_type>& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ return __table_.__node_handle_merge_multi(__source.__table_);
+ }
+ template <class _H2, class _P2>
+ _LIBCPP_INLINE_VISIBILITY
+ void merge(unordered_set<key_type, _H2, _P2, allocator_type>&& __source)
+ {
+ _LIBCPP_ASSERT(__source.get_allocator() == get_allocator(),
+ "merging container with incompatible allocator");
+ return __table_.__node_handle_merge_multi(__source.__table_);
+ }
#endif
_LIBCPP_INLINE_VISIBILITY
@@ -1397,6 +1511,13 @@ swap(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
__x.swap(__y);
}
+#if _LIBCPP_STD_VER > 17
+template <class _Value, class _Hash, class _Pred, class _Alloc, class _Predicate>
+inline _LIBCPP_INLINE_VISIBILITY
+void erase_if(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __c, _Predicate __pred)
+{ __libcpp_erase_if_container(__c, __pred); }
+#endif
+
template <class _Value, class _Hash, class _Pred, class _Alloc>
bool
operator==(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,