PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
clear()
{
for (size_type i = 0; i < m_size; ++i)
erase_at(m_a_entries, i, s_no_throw_copies_ind);
try
{
const size_type actual_size = resize_policy::get_new_size_for_arbitrary(0);
entry_pointer a_entries = s_entry_allocator.allocate(actual_size);
resize_policy::notify_arbitrary(actual_size);
s_entry_allocator.deallocate(m_a_entries, m_actual_size);
m_actual_size = actual_size;
m_a_entries = a_entries;
}
catch(...)
{ }
m_size = 0;
_GLIBCXX_DEBUG_ONLY(assert_valid();)
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
erase_at(entry_pointer a_entries, size_type i, false_type)
{
a_entries[i]->~value_type();
s_value_allocator.deallocate(a_entries[i], 1);
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
erase_at(entry_pointer, size_type, true_type)
{ }
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
pop()
{
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ASSERT(!empty());
erase_at(m_a_entries, 0, s_no_throw_copies_ind);
std::pop_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
resize_for_erase_if_needed();
_GLIBCXX_DEBUG_ASSERT(m_size > 0);
--m_size;
_GLIBCXX_DEBUG_ONLY(assert_valid();)
}
PB_DS_CLASS_T_DEC
template<typename Pred>
typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
erase_if(Pred pred)
{
_GLIBCXX_DEBUG_ONLY(assert_valid();)
typedef
typename entry_pred<
value_type,
Pred,
simple_value,
Allocator>::type
pred_t;
const size_type left = partition(pred_t(pred));
_GLIBCXX_DEBUG_ASSERT(m_size >= left);
const size_type ersd = m_size - left;
for (size_type i = left; i < m_size; ++i)
erase_at(m_a_entries, i, s_no_throw_copies_ind);
try
{
const size_type actual_size =
resize_policy::get_new_size_for_arbitrary(left);
entry_pointer a_entries = s_entry_allocator.allocate(actual_size);
std::copy(m_a_entries, m_a_entries + left, a_entries);
s_entry_allocator.deallocate(m_a_entries, m_actual_size);
m_actual_size = actual_size;
resize_policy::notify_arbitrary(m_actual_size);
}
catch(...)
{ };
m_size = left;
std::make_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
_GLIBCXX_DEBUG_ONLY(assert_valid();)
return ersd;
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
erase(point_iterator it)
{
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ASSERT(!empty());
const size_type fix_pos = it.m_p_e - m_a_entries;
std::swap(*it.m_p_e, m_a_entries[m_size - 1]);
erase_at(m_a_entries, m_size - 1, s_no_throw_copies_ind);
resize_for_erase_if_needed();
_GLIBCXX_DEBUG_ASSERT(m_size > 0);
--m_size;
_GLIBCXX_DEBUG_ASSERT(fix_pos <= m_size);
if (fix_pos != m_size)
fix(m_a_entries + fix_pos);
_GLIBCXX_DEBUG_ONLY(assert_valid();)
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
resize_for_erase_if_needed()
{
if (!resize_policy::resize_needed_for_shrink(m_size))
return;
try
{
const size_type new_actual_size =
resize_policy::get_new_size_for_shrink();
entry_pointer a_new_entries = s_entry_allocator.allocate(new_actual_size);
resize_policy::notify_shrink_resize();
_GLIBCXX_DEBUG_ASSERT(m_size > 0);
std::copy(m_a_entries, m_a_entries + m_size - 1, 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;
}
catch(...)
{ }
}
PB_DS_CLASS_T_DEC
template<typename Pred>
typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
partition(Pred pred)
{
size_type left = 0;
size_type right = m_size - 1;
while (right + 1 != left)
{
_GLIBCXX_DEBUG_ASSERT(left <= m_size);
if (!pred(m_a_entries[left]))
++left;
else if (pred(m_a_entries[right]))
--right;
else
{
_GLIBCXX_DEBUG_ASSERT(left < right);
std::swap(m_a_entries[left], m_a_entries[right]);
++left;
--right;
}
}
return left;
}