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lib: core implementation of header_holder in bstbase3

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Matei David
2014-05-16 10:59:29 -04:00
parent 80b509ee2d
commit 54e9befe5f
1 changed files with 27 additions and 21 deletions
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48
include/boost/intrusive/bstree.hpp
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@@ -61,18 +61,38 @@ struct bstbase3
typedef typename get_algo<AlgoType, node_traits>::type node_algorithms; typedef typename get_algo<AlgoType, node_traits>::type node_algorithms;
typedef typename node_traits::node_ptr node_ptr; typedef typename node_traits::node_ptr node_ptr;
typedef typename node_traits::const_node_ptr const_node_ptr; typedef typename node_traits::const_node_ptr const_node_ptr;
typedef tree_iterator<value_traits, false> iterator;
typedef tree_iterator<value_traits, true> const_iterator;
typedef boost::intrusive::detail::reverse_iterator<iterator> reverse_iterator;
typedef boost::intrusive::detail::reverse_iterator<const_iterator> const_reverse_iterator;
typedef BOOST_INTRUSIVE_IMPDEF(typename value_traits::pointer) pointer;
typedef BOOST_INTRUSIVE_IMPDEF(typename value_traits::const_pointer) const_pointer;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<pointer>::element_type) value_type;
typedef BOOST_INTRUSIVE_IMPDEF(value_type) key_type;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<pointer>::reference) reference;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<const_pointer>::reference) const_reference;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<const_pointer>::difference_type) difference_type;
typedef Header_Holder header_holder_type;
static const bool safemode_or_autounlink = is_safe_autounlink<value_traits::link_mode>::value;
static const bool stateful_value_traits = detail::is_stateful_value_traits<value_traits>::value;
static const bool has_container_from_iterator =
boost::is_same< header_holder_type, detail::default_header_holder< node_traits > >::value;
struct holder_t : public ValueTraits struct holder_t : public ValueTraits
{ {
explicit holder_t(const ValueTraits &vtraits) explicit holder_t(const ValueTraits &vtraits)
: ValueTraits(vtraits) : ValueTraits(vtraits)
{} {}
node_type root; header_holder_type root;
} holder; } holder;
static bstbase3 &get_tree_base_from_root(node_type &root) static bstbase3 &get_tree_base_from_end_iterator(const const_iterator &end_iterator)
{ {
holder_t *holder = get_parent_from_member<holder_t, node_type>(&root, &holder_t::root); BOOST_STATIC_ASSERT(has_container_from_iterator);
node_ptr p = end_iterator.pointed_node();
header_holder_type* h = header_holder_type::get_holder(p);
holder_t *holder = get_parent_from_member<holder_t, header_holder_type>(h, &holder_t::root);
bstbase3 *base = get_parent_from_member<bstbase3, holder_t> (holder, &bstbase3::holder); bstbase3 *base = get_parent_from_member<bstbase3, holder_t> (holder, &bstbase3::holder);
return *base; return *base;
} }
@@ -84,10 +104,10 @@ struct bstbase3
} }
node_ptr header_ptr() node_ptr header_ptr()
{ return pointer_traits<node_ptr>::pointer_to(this->holder.root); } { return holder.root.get_node(); }
const_node_ptr header_ptr() const const_node_ptr header_ptr() const
{ return pointer_traits<const_node_ptr>::pointer_to(this->holder.root); } { return holder.root.get_node(); }
const value_traits &get_value_traits() const const value_traits &get_value_traits() const
{ return this->holder; } { return this->holder; }
@@ -101,20 +121,6 @@ struct bstbase3
const_value_traits_ptr value_traits_ptr() const const_value_traits_ptr value_traits_ptr() const
{ return pointer_traits<const_value_traits_ptr>::pointer_to(this->get_value_traits()); } { return pointer_traits<const_value_traits_ptr>::pointer_to(this->get_value_traits()); }
typedef tree_iterator<value_traits, false> iterator;
typedef tree_iterator<value_traits, true> const_iterator;
typedef boost::intrusive::detail::reverse_iterator<iterator> reverse_iterator;
typedef boost::intrusive::detail::reverse_iterator<const_iterator> const_reverse_iterator;
typedef BOOST_INTRUSIVE_IMPDEF(typename value_traits::pointer) pointer;
typedef BOOST_INTRUSIVE_IMPDEF(typename value_traits::const_pointer) const_pointer;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<pointer>::element_type) value_type;
typedef BOOST_INTRUSIVE_IMPDEF(value_type) key_type;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<pointer>::reference) reference;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<const_pointer>::reference) const_reference;
typedef BOOST_INTRUSIVE_IMPDEF(typename pointer_traits<const_pointer>::difference_type) difference_type;
static const bool safemode_or_autounlink = is_safe_autounlink<value_traits::link_mode>::value;
static const bool stateful_value_traits = detail::is_stateful_value_traits<value_traits>::value;
iterator begin() iterator begin()
{ return iterator(node_algorithms::begin_node(this->header_ptr()), this->value_traits_ptr()); } { return iterator(node_algorithms::begin_node(this->header_ptr()), this->value_traits_ptr()); }
@@ -776,7 +782,7 @@ class bstree_impl
static bstree_impl &container_from_end_iterator(iterator end_iterator) static bstree_impl &container_from_end_iterator(iterator end_iterator)
{ {
return static_cast<bstree_impl&> return static_cast<bstree_impl&>
(data_type::get_tree_base_from_root(*boost::intrusive::detail::to_raw_pointer(end_iterator.pointed_node()))); (data_type::get_tree_base_from_end_iterator(end_iterator));
} }
//! <b>Precondition</b>: end_iterator must be a valid end const_iterator //! <b>Precondition</b>: end_iterator must be a valid end const_iterator
@@ -790,7 +796,7 @@ class bstree_impl
static const bstree_impl &container_from_end_iterator(const_iterator end_iterator) static const bstree_impl &container_from_end_iterator(const_iterator end_iterator)
{ {
return static_cast<bstree_impl&> return static_cast<bstree_impl&>
(data_type::get_tree_base_from_root(*boost::intrusive::detail::to_raw_pointer(end_iterator.pointed_node()))); (data_type::get_tree_base_from_end_iterator(end_iterator));
} }
//! <b>Precondition</b>: it must be a valid iterator //! <b>Precondition</b>: it must be a valid iterator