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();)
insert_value(r_val, s_no_throw_copies_ind);
std::push_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
_GLIBCXX_DEBUG_ONLY(assert_valid();)
return point_iterator(m_a_entries);
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
insert_value(value_type val, true_type)
{
resize_for_insert_if_needed();
m_a_entries[m_size++] = val;
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
insert_value(const_reference r_val, false_type)
{
resize_for_insert_if_needed();
pointer p_new = s_value_allocator.allocate(1);
cond_dealtor_t cond(p_new);
new (p_new) value_type(r_val);
cond.set_no_action();
m_a_entries[m_size++] = p_new;
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
insert_entry(entry e)
{
resize_for_insert_if_needed();
m_a_entries[m_size++] = e;
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
resize_for_insert_if_needed()
{
if (!resize_policy::resize_needed_for_grow(m_size))
{
_GLIBCXX_DEBUG_ASSERT(m_size < m_actual_size);
return;
}
const size_type new_actual_size =
resize_policy::get_new_size_for_grow();
entry_pointer a_new_entries = s_entry_allocator.allocate(new_actual_size);
resize_policy::notify_grow_resize();
std::copy(m_a_entries, m_a_entries + m_size, a_new_entries);
s_entry_allocator.deallocate(m_a_entries, m_actual_size);
m_actual_size = new_actual_size;
m_a_entries = a_new_entries;
}
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();)
swap_value_imp(it.m_p_e, r_new_val, s_no_throw_copies_ind);
fix(it.m_p_e);
_GLIBCXX_DEBUG_ONLY(assert_valid();)
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
fix(entry_pointer p_e)
{
size_type i = p_e - m_a_entries;
if (i > 0&& entry_cmp::operator()(m_a_entries[parent(i)], m_a_entries[i]))
{
size_type parent_i = parent(i);
while (i > 0&& entry_cmp::operator()(m_a_entries[parent_i], m_a_entries[i]))
{
std::swap(m_a_entries[i], m_a_entries[parent_i]);
i = parent_i;
parent_i = parent(i);
}
_GLIBCXX_DEBUG_ONLY(assert_valid();)
return;
}
while (i < m_size)
{
const size_type left_child_i = left_child(i);
const size_type right_child_i = right_child(i);
_GLIBCXX_DEBUG_ASSERT(right_child_i > left_child_i);
const bool smaller_than_left_child =
left_child_i < m_size&&
entry_cmp::operator()(m_a_entries[i], m_a_entries[left_child_i]);
const bool smaller_than_right_child =
right_child_i < m_size&&
entry_cmp::operator()(m_a_entries[i], m_a_entries[right_child_i]);
const bool swap_with_r_child = smaller_than_right_child&& (!smaller_than_left_child ||
entry_cmp::operator()(m_a_entries[left_child_i], m_a_entries[right_child_i]));
const bool swap_with_l_child = !swap_with_r_child&& smaller_than_left_child;
if (swap_with_l_child)
{
std::swap(m_a_entries[i], m_a_entries[left_child_i]);
i = left_child_i;
}
else if (swap_with_r_child)
{
std::swap(m_a_entries[i], m_a_entries[right_child_i]);
i = right_child_i;
}
else
i = m_size;
}
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
swap_value_imp(entry_pointer p_e, value_type new_val, true_type)
{
* p_e = new_val;
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
swap_value_imp(entry_pointer p_e, const_reference r_new_val, false_type)
{
value_type tmp(r_new_val);
(*p_e)->swap(tmp);
}