insert_fn_imps.hpp [plain text]
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::point_iterator
PB_DS_CLASS_C_DEC::
push(const_reference r_val)
{
_GLIBCXX_DEBUG_ONLY(assert_valid(true);)
node_pointer p_nd = base_type::get_new_node_for_insert(r_val);
insert_node(p_nd);
m_p_max = NULL;
_GLIBCXX_DEBUG_ONLY(assert_valid(true);)
return point_iterator(p_nd);
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
insert_node(node_pointer p_nd)
{
if (base_type::m_p_root == NULL)
{
p_nd->m_p_next_sibling = p_nd->m_p_prev_or_parent =
p_nd->m_p_l_child = NULL;
p_nd->m_metadata = 0;
base_type::m_p_root = p_nd;
return;
}
if (base_type::m_p_root->m_metadata > 0)
{
p_nd->m_p_prev_or_parent = p_nd->m_p_l_child = NULL;
p_nd->m_p_next_sibling = base_type::m_p_root;
base_type::m_p_root->m_p_prev_or_parent = p_nd;
base_type::m_p_root = p_nd;
p_nd->m_metadata = 0;
return;
}
if (Cmp_Fn::operator()(base_type::m_p_root->m_value, p_nd->m_value))
{
p_nd->m_p_next_sibling = base_type::m_p_root->m_p_next_sibling;
p_nd->m_p_prev_or_parent = NULL;
p_nd->m_metadata = 1;
p_nd->m_p_l_child = base_type::m_p_root;
base_type::m_p_root->m_p_prev_or_parent = p_nd;
base_type::m_p_root->m_p_next_sibling = NULL;
base_type::m_p_root = p_nd;
}
else
{
p_nd->m_p_next_sibling = NULL;
p_nd->m_p_l_child = NULL;
p_nd->m_p_prev_or_parent = base_type::m_p_root;
p_nd->m_metadata = 0;
_GLIBCXX_DEBUG_ASSERT(base_type::m_p_root->m_p_l_child == 0);
base_type::m_p_root->m_p_l_child = p_nd;
base_type::m_p_root->m_metadata = 1;
}
base_type::m_p_root = fix(base_type::m_p_root);
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
fix(node_pointer p_nd) const
{
while (p_nd->m_p_next_sibling != NULL&&
p_nd->m_metadata == p_nd->m_p_next_sibling->m_metadata)
{
node_pointer p_next = p_nd->m_p_next_sibling;
if (Cmp_Fn::operator()(p_nd->m_value, p_next->m_value))
{
p_next->m_p_prev_or_parent =
p_nd->m_p_prev_or_parent;
if (p_nd->m_p_prev_or_parent != NULL)
p_nd->m_p_prev_or_parent->m_p_next_sibling = p_next;
base_type::make_child_of(p_nd, p_next);
++p_next->m_metadata;
p_nd = p_next;
}
else
{
p_nd->m_p_next_sibling = p_next->m_p_next_sibling;
if (p_nd->m_p_next_sibling != NULL)
p_next->m_p_next_sibling = NULL;
base_type::make_child_of(p_next, p_nd);
++p_nd->m_metadata;
}
}
if (p_nd->m_p_next_sibling != NULL)
p_nd->m_p_next_sibling->m_p_prev_or_parent = p_nd;
return p_nd;
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
modify(point_iterator it, const_reference r_new_val)
{
_GLIBCXX_DEBUG_ONLY(assert_valid(true);)
node_pointer p_nd = it.m_p_nd;
_GLIBCXX_DEBUG_ASSERT(p_nd != NULL);
_GLIBCXX_DEBUG_ONLY(base_type::assert_node_consistent(p_nd, false);)
const bool bubble_up = Cmp_Fn::operator()(p_nd->m_value, r_new_val);
p_nd->m_value = r_new_val;
if (bubble_up)
{
node_pointer p_parent = base_type::parent(p_nd);
while (p_parent != NULL&&
Cmp_Fn::operator()(p_parent->m_value, p_nd->m_value))
{
base_type::swap_with_parent(p_nd, p_parent);
p_parent = base_type::parent(p_nd);
}
if (p_nd->m_p_prev_or_parent == NULL)
base_type::m_p_root = p_nd;
m_p_max = NULL;
_GLIBCXX_DEBUG_ONLY(assert_valid(true);)
return;
}
base_type::bubble_to_top(p_nd);
remove_parentless_node(p_nd);
insert_node(p_nd);
m_p_max = NULL;
_GLIBCXX_DEBUG_ONLY(assert_valid(true);)
}