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Implemented equal_range for unique associative containers using lower_bound_range. This might be a bit slower when comparison function is very lightweight, but shines when it's heavy as it just needs to perform a single additional comparison and a possible successor iteration.

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Ion Gaztañaga
2014-01-20 12:13:53 +01:00
parent 3c6f96a96a
commit f162078264
9 changed files with 182 additions and 53 deletions
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19
include/boost/intrusive/splaytree_algorithms.hpp
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@@ -353,6 +353,25 @@ class splaytree_algorithms
(const const_node_ptr & header, const KeyType &key, KeyNodePtrCompare comp)
{ return bstree_algo::equal_range(header, key, comp); }
//! @copydoc ::boost::intrusive::bstree_algorithms::lower_bound_range(const const_node_ptr&,const KeyType&,KeyNodePtrCompare)
//! Additional notes: the first node of the range is splayed.
template<class KeyType, class KeyNodePtrCompare>
static std::pair<node_ptr, node_ptr> lower_bound_range
(const node_ptr & header, const KeyType &key, KeyNodePtrCompare comp)
{
splay_down(detail::uncast(header), key, comp);
std::pair<node_ptr, node_ptr> ret = bstree_algo::lower_bound_range(header, key, comp);
//splay_up(ret.first, detail::uncast(header));
return ret;
}
//! @copydoc ::boost::intrusive::bstree_algorithms::lower_bound_range(const const_node_ptr&,const KeyType&,KeyNodePtrCompare)
//! Additional note: no splaying is performed
template<class KeyType, class KeyNodePtrCompare>
static std::pair<node_ptr, node_ptr> lower_bound_range
(const const_node_ptr & header, const KeyType &key, KeyNodePtrCompare comp)
{ return bstree_algo::lower_bound_range(header, key, comp); }
//! @copydoc ::boost::intrusive::bstree_algorithms::bounded_range(const const_node_ptr&,const KeyType&,const KeyType&,KeyNodePtrCompare,bool,bool)
//! Additional notes: the first node of the range is splayed.
template<class KeyType, class KeyNodePtrCompare>