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Implemented "insert_or_assign" for map-like containers.

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Ion Gaztañaga
2016-08-18 20:29:04 +02:00
parent fb1be6fa75
commit 2d6f781a2f
11 changed files with 589 additions and 208 deletions
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include/boost/container/flat_map.hpp
+94 -2
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@@ -56,11 +56,11 @@ namespace container {
namespace container_detail{
template<class D, class S>
static D &force(const S &s)
BOOST_CONTAINER_FORCEINLINE static D &force(const S &s)
{ return *const_cast<D*>((reinterpret_cast<const D*>(&s))); }
template<class D, class S>
static D force_copy(S s)
BOOST_CONTAINER_FORCEINLINE static D force_copy(S s)
{
D *vp = reinterpret_cast<D *>(&s);
return D(*vp);
@@ -604,6 +604,98 @@ class flat_map
BOOST_MOVE_CONVERSION_AWARE_CATCH( operator[] , key_type, mapped_type&, this->priv_subscript)
#endif
//! Effects: If a key equivalent to k already exists in the container, assigns forward<M>(obj)
//! to the mapped_type corresponding to the key k. If the key does not exist, inserts the new value
//! as if by insert, constructing it from value_type(k, forward<M>(obj)).
//!
//! No iterators or references are invalidated. If the insertion is successful, pointers and references
//! to the element obtained while it is held in the node handle are invalidated, and pointers and
//! references obtained to that element before it was extracted become valid.
//!
//! Returns: The bool component is true if the insertion took place and false if the assignment
//! took place. The iterator component is pointing at the element that was inserted or updated.
//!
//! Complexity: Logarithmic in the size of the container.
template <class M>
BOOST_CONTAINER_FORCEINLINE std::pair<iterator, bool> insert_or_assign(const key_type& k, BOOST_FWD_REF(M) obj)
{
return container_detail::force_copy< std::pair<iterator, bool> >
(this->m_flat_tree.insert_or_assign
( container_detail::force_copy<impl_const_iterator>(const_iterator())
, k, ::boost::forward<M>(obj))
);
}
//! Effects: If a key equivalent to k already exists in the container, assigns forward<M>(obj)
//! to the mapped_type corresponding to the key k. If the key does not exist, inserts the new value
//! as if by insert, constructing it from value_type(k, move(obj)).
//!
//! No iterators or references are invalidated. If the insertion is successful, pointers and references
//! to the element obtained while it is held in the node handle are invalidated, and pointers and
//! references obtained to that element before it was extracted become valid.
//!
//! Returns: The bool component is true if the insertion took place and false if the assignment
//! took place. The iterator component is pointing at the element that was inserted or updated.
//!
//! Complexity: Logarithmic in the size of the container.
template <class M>
BOOST_CONTAINER_FORCEINLINE std::pair<iterator, bool> insert_or_assign(BOOST_RV_REF(key_type) k, BOOST_FWD_REF(M) obj)
{
return container_detail::force_copy< std::pair<iterator, bool> >
(this->m_flat_tree.insert_or_assign
( container_detail::force_copy<impl_const_iterator>(const_iterator())
, ::boost::move(k), ::boost::forward<M>(obj))
);
}
//! Effects: If a key equivalent to k already exists in the container, assigns forward<M>(obj)
//! to the mapped_type corresponding to the key k. If the key does not exist, inserts the new value
//! as if by insert, constructing it from value_type(k, forward<M>(obj)) and the new element
//! to the container as close as possible to the position just before hint.
//!
//! No iterators or references are invalidated. If the insertion is successful, pointers and references
//! to the element obtained while it is held in the node handle are invalidated, and pointers and
//! references obtained to that element before it was extracted become valid.
//!
//! Returns: The bool component is true if the insertion took place and false if the assignment
//! took place. The iterator component is pointing at the element that was inserted or updated.
//!
//! Complexity: Logarithmic in the size of the container in general, but amortized constant if
//! the new element is inserted just before hint.
template <class M>
BOOST_CONTAINER_FORCEINLINE iterator insert_or_assign(const_iterator hint, const key_type& k, BOOST_FWD_REF(M) obj)
{
return container_detail::force_copy< std::pair<iterator, bool> >
(this->m_flat_tree.insert_or_assign
( container_detail::force_copy<impl_const_iterator>(hint)
, k, ::boost::forward<M>(obj))
);
}
//! Effects: If a key equivalent to k already exists in the container, assigns forward<M>(obj)
//! to the mapped_type corresponding to the key k. If the key does not exist, inserts the new value
//! as if by insert, constructing it from value_type(k, move(obj)) and the new element
//! to the container as close as possible to the position just before hint.
//!
//! No iterators or references are invalidated. If the insertion is successful, pointers and references
//! to the element obtained while it is held in the node handle are invalidated, and pointers and
//! references obtained to that element before it was extracted become valid.
//!
//! Returns: The bool component is true if the insertion took place and false if the assignment
//! took place. The iterator component is pointing at the element that was inserted or updated.
//!
//! Complexity: Logarithmic in the size of the container in general, but amortized constant if
//! the new element is inserted just before hint.
template <class M>
BOOST_CONTAINER_FORCEINLINE iterator insert_or_assign(const_iterator hint, BOOST_RV_REF(key_type) k, BOOST_FWD_REF(M) obj)
{
return container_detail::force_copy< std::pair<iterator, bool> >
(this->m_flat_tree.insert_or_assign
( container_detail::force_copy<impl_const_iterator>(hint)
, ::boost::move(k), ::boost::forward<M>(obj))
);
}
//! @copydoc ::boost::container::flat_set::nth(size_type)
iterator nth(size_type n) BOOST_NOEXCEPT_OR_NOTHROW
{ return container_detail::force_copy<iterator>(m_flat_tree.nth(n)); }