insert_join_fn_imps.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License as published by the Free Software
// Foundation; either version 3, or (at your option) any later
// version.
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file pat_trie_/insert_join_fn_imps.hpp
* Contains an implementation class for pat_trie.
*/
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
join(PB_DS_CLASS_C_DEC& other)
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
branch_bag bag;
if (!join_prep(other, bag))
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
return;
}
m_p_head->m_p_parent = rec_join(m_p_head->m_p_parent,
other.m_p_head->m_p_parent, 0, bag);
m_p_head->m_p_parent->m_p_parent = m_p_head;
m_size += other.m_size;
other.initialize();
PB_DS_ASSERT_VALID(other)
m_p_head->m_p_min = leftmost_descendant(m_p_head->m_p_parent);
m_p_head->m_p_max = rightmost_descendant(m_p_head->m_p_parent);
PB_DS_ASSERT_VALID((*this))
}
PB_DS_CLASS_T_DEC
bool
PB_DS_CLASS_C_DEC::
join_prep(PB_DS_CLASS_C_DEC& other, branch_bag& r_bag)
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
if (other.m_size == 0)
return false;
if (m_size == 0)
{
value_swap(other);
return false;
}
const bool greater =
synth_access_traits::cmp_keys(PB_DS_V2F(static_cast<leaf_const_pointer>(m_p_head->m_p_max)->value()),
PB_DS_V2F(static_cast<leaf_const_pointer>(other.m_p_head->m_p_min)->value()));
const bool lesser =
synth_access_traits::cmp_keys(PB_DS_V2F(static_cast<leaf_const_pointer>(other.m_p_head->m_p_max)->value()),
PB_DS_V2F(static_cast<leaf_const_pointer>(m_p_head->m_p_min)->value()));
if (!greater && !lesser)
__throw_join_error();
rec_join_prep(m_p_head->m_p_parent, other.m_p_head->m_p_parent, r_bag);
_GLIBCXX_DEBUG_ONLY(debug_base::join(other, false);)
return true;
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
rec_join_prep(node_const_pointer p_l, node_const_pointer p_r,
branch_bag& r_bag)
{
if (p_l->m_type == leaf_node)
{
if (p_r->m_type == leaf_node)
{
rec_join_prep(static_cast<leaf_const_pointer>(p_l),
static_cast<leaf_const_pointer>(p_r), r_bag);
return;
}
_GLIBCXX_DEBUG_ASSERT(p_r->m_type == i_node);
rec_join_prep(static_cast<leaf_const_pointer>(p_l),
static_cast<inode_const_pointer>(p_r), r_bag);
return;
}
_GLIBCXX_DEBUG_ASSERT(p_l->m_type == i_node);
if (p_r->m_type == leaf_node)
{
rec_join_prep(static_cast<inode_const_pointer>(p_l),
static_cast<leaf_const_pointer>(p_r), r_bag);
return;
}
_GLIBCXX_DEBUG_ASSERT(p_r->m_type == i_node);
rec_join_prep(static_cast<inode_const_pointer>(p_l),
static_cast<inode_const_pointer>(p_r), r_bag);
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
rec_join_prep(leaf_const_pointer /*p_l*/, leaf_const_pointer /*p_r*/,
branch_bag& r_bag)
{ r_bag.add_branch(); }
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
rec_join_prep(leaf_const_pointer /*p_l*/, inode_const_pointer /*p_r*/,
branch_bag& r_bag)
{ r_bag.add_branch(); }
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
rec_join_prep(inode_const_pointer /*p_l*/, leaf_const_pointer /*p_r*/,
branch_bag& r_bag)
{ r_bag.add_branch(); }
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
rec_join_prep(inode_const_pointer p_l, inode_const_pointer p_r,
branch_bag& r_bag)
{
if (p_l->get_e_ind() == p_r->get_e_ind() &&
synth_access_traits::equal_prefixes(p_l->pref_b_it(), p_l->pref_e_it(),
p_r->pref_b_it(), p_r->pref_e_it()))
{
for (typename inode::const_iterator it = p_r->begin();
it != p_r->end(); ++ it)
{
node_const_pointer p_l_join_child = p_l->get_join_child(*it, this);
if (p_l_join_child != 0)
rec_join_prep(p_l_join_child, * it, r_bag);
}
return;
}
if (p_r->get_e_ind() < p_l->get_e_ind() &&
p_r->should_be_mine(p_l->pref_b_it(), p_l->pref_e_it(), 0, this))
{
node_const_pointer p_r_join_child = p_r->get_join_child(p_l, this);
if (p_r_join_child != 0)
rec_join_prep(p_r_join_child, p_l, r_bag);
return;
}
if (p_r->get_e_ind() < p_l->get_e_ind() &&
p_r->should_be_mine(p_l->pref_b_it(), p_l->pref_e_it(), 0, this))
{
node_const_pointer p_r_join_child = p_r->get_join_child(p_l, this);
if (p_r_join_child != 0)
rec_join_prep(p_r_join_child, p_l, r_bag);
return;
}
r_bag.add_branch();
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
rec_join(node_pointer p_l, node_pointer p_r, size_type checked_ind,
branch_bag& r_bag)
{
_GLIBCXX_DEBUG_ASSERT(p_r != 0);
if (p_l == 0)
{
apply_update(p_r, (node_update*)this);
return (p_r);
}
if (p_l->m_type == leaf_node)
{
if (p_r->m_type == leaf_node)
{
node_pointer p_ret = rec_join(static_cast<leaf_pointer>(p_l),
static_cast<leaf_pointer>(p_r), r_bag);
apply_update(p_ret, (node_update*)this);
return p_ret;
}
_GLIBCXX_DEBUG_ASSERT(p_r->m_type == i_node);
node_pointer p_ret = rec_join(static_cast<leaf_pointer>(p_l),
static_cast<inode_pointer>(p_r),
checked_ind, r_bag);
apply_update(p_ret, (node_update*)this);
return p_ret;
}
_GLIBCXX_DEBUG_ASSERT(p_l->m_type == i_node);
if (p_r->m_type == leaf_node)
{
node_pointer p_ret = rec_join(static_cast<inode_pointer>(p_l),
static_cast<leaf_pointer>(p_r),
checked_ind, r_bag);
apply_update(p_ret, (node_update*)this);
return p_ret;
}
_GLIBCXX_DEBUG_ASSERT(p_r->m_type == i_node);
node_pointer p_ret = rec_join(static_cast<inode_pointer>(p_l),
static_cast<inode_pointer>(p_r),
r_bag);
apply_update(p_ret, (node_update*)this);
return p_ret;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
rec_join(leaf_pointer p_l, leaf_pointer p_r, branch_bag& r_bag)
{
_GLIBCXX_DEBUG_ASSERT(p_r != 0);
if (p_l == 0)
return (p_r);
node_pointer p_ret = insert_branch(p_l, p_r, r_bag);
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_ret) == 2);
return p_ret;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
rec_join(leaf_pointer p_l, inode_pointer p_r, size_type checked_ind,
branch_bag& r_bag)
{
#ifdef _GLIBCXX_DEBUG
const size_type lhs_leafs = PB_DS_RECURSIVE_COUNT_LEAFS(p_l);
const size_type rhs_leafs = PB_DS_RECURSIVE_COUNT_LEAFS(p_r);
#endif
_GLIBCXX_DEBUG_ASSERT(p_r != 0);
node_pointer p_ret = rec_join(p_r, p_l, checked_ind, r_bag);
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_ret) == lhs_leafs + rhs_leafs);
return p_ret;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
rec_join(inode_pointer p_l, leaf_pointer p_r, size_type checked_ind, branch_bag& r_bag)
{
_GLIBCXX_DEBUG_ASSERT(p_l != 0);
_GLIBCXX_DEBUG_ASSERT(p_r != 0);
#ifdef _GLIBCXX_DEBUG
const size_type lhs_leafs = PB_DS_RECURSIVE_COUNT_LEAFS(p_l);
const size_type rhs_leafs = PB_DS_RECURSIVE_COUNT_LEAFS(p_r);
#endif
if (!p_l->should_be_mine(pref_begin(p_r), pref_end(p_r), checked_ind, this))
{
node_pointer p_ret = insert_branch(p_l, p_r, r_bag);
PB_DS_ASSERT_NODE_VALID(p_ret)
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_ret) ==
lhs_leafs + rhs_leafs);
return p_ret;
}
node_pointer p_pot_child = p_l->add_child(p_r, pref_begin(p_r),
pref_end(p_r), this);
if (p_pot_child != p_r)
{
node_pointer p_new_child = rec_join(p_pot_child, p_r, p_l->get_e_ind(),
r_bag);
p_l->replace_child(p_new_child, pref_begin(p_new_child),
pref_end(p_new_child), this);
}
PB_DS_ASSERT_NODE_VALID(p_l)
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_l) == lhs_leafs + rhs_leafs);
return p_l;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
rec_join(inode_pointer p_l, inode_pointer p_r,
branch_bag& r_bag)
{
_GLIBCXX_DEBUG_ASSERT(p_l != 0);
_GLIBCXX_DEBUG_ASSERT(p_r != 0);
#ifdef _GLIBCXX_DEBUG
const size_type lhs_leafs = PB_DS_RECURSIVE_COUNT_LEAFS(p_l);
const size_type rhs_leafs = PB_DS_RECURSIVE_COUNT_LEAFS(p_r);
#endif
if (p_l->get_e_ind() == p_r->get_e_ind() &&
synth_access_traits::equal_prefixes(p_l->pref_b_it(), p_l->pref_e_it(),
p_r->pref_b_it(), p_r->pref_e_it()))
{
for (typename inode::iterator it = p_r->begin();
it != p_r->end(); ++ it)
{
node_pointer p_new_child = rec_join(p_l->get_join_child(*it, this),
* it, 0, r_bag);
p_l->replace_child(p_new_child, pref_begin(p_new_child),
pref_end(p_new_child), this);
}
p_r->~inode();
s_inode_allocator.deallocate(p_r, 1);
PB_DS_ASSERT_NODE_VALID(p_l)
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_l) == lhs_leafs + rhs_leafs);
return p_l;
}
if (p_l->get_e_ind() < p_r->get_e_ind() &&
p_l->should_be_mine(p_r->pref_b_it(), p_r->pref_e_it(), 0, this))
{
node_pointer p_new_child = rec_join(p_l->get_join_child(p_r, this),
p_r, 0, r_bag);
p_l->replace_child(p_new_child, pref_begin(p_new_child),
pref_end(p_new_child), this);
PB_DS_ASSERT_NODE_VALID(p_l)
return p_l;
}
if (p_r->get_e_ind() < p_l->get_e_ind() &&
p_r->should_be_mine(p_l->pref_b_it(), p_l->pref_e_it(), 0, this))
{
node_pointer p_new_child = rec_join(p_r->get_join_child(p_l, this), p_l,
0, r_bag);
p_r->replace_child(p_new_child, pref_begin(p_new_child),
pref_end(p_new_child), this);
PB_DS_ASSERT_NODE_VALID(p_r)
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_r) == lhs_leafs + rhs_leafs);
return p_r;
}
node_pointer p_ret = insert_branch(p_l, p_r, r_bag);
PB_DS_ASSERT_NODE_VALID(p_ret)
_GLIBCXX_DEBUG_ASSERT(PB_DS_RECURSIVE_COUNT_LEAFS(p_ret) == lhs_leafs + rhs_leafs);
return p_ret;
}
PB_DS_CLASS_T_DEC
inline std::pair<typename PB_DS_CLASS_C_DEC::iterator, bool>
PB_DS_CLASS_C_DEC::
insert(const_reference r_val)
{
node_pointer p_lf = find_imp(PB_DS_V2F(r_val));
if (p_lf != 0 && p_lf->m_type == leaf_node &&
synth_access_traits::equal_keys(PB_DS_V2F(static_cast<leaf_pointer>(p_lf)->value()), PB_DS_V2F(r_val)))
{
PB_DS_CHECK_KEY_EXISTS(PB_DS_V2F(r_val))
PB_DS_ASSERT_VALID((*this))
return std::make_pair(iterator(p_lf), false);
}
PB_DS_CHECK_KEY_DOES_NOT_EXIST(PB_DS_V2F(r_val))
leaf_pointer p_new_lf = s_leaf_allocator.allocate(1);
cond_dealtor cond(p_new_lf);
new (p_new_lf) leaf(r_val);
apply_update(p_new_lf, (node_update*)this);
cond.set_call_destructor();
branch_bag bag;
bag.add_branch();
m_p_head->m_p_parent = rec_join(m_p_head->m_p_parent, p_new_lf, 0, bag);
m_p_head->m_p_parent->m_p_parent = m_p_head;
cond.set_no_action_dtor();
++m_size;
update_min_max_for_inserted_leaf(p_new_lf);
_GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_val));)
PB_DS_ASSERT_VALID((*this))
return std::make_pair(point_iterator(p_new_lf), true);
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
keys_diff_ind(typename access_traits::const_iterator b_l,
typename access_traits::const_iterator e_l,
typename access_traits::const_iterator b_r,
typename access_traits::const_iterator e_r)
{
size_type diff_pos = 0;
while (b_l != e_l)
{
if (b_r == e_r)
return (diff_pos);
if (access_traits::e_pos(*b_l) != access_traits::e_pos(*b_r))
return (diff_pos);
++b_l;
++b_r;
++diff_pos;
}
_GLIBCXX_DEBUG_ASSERT(b_r != e_r);
return diff_pos;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::inode_pointer
PB_DS_CLASS_C_DEC::
insert_branch(node_pointer p_l, node_pointer p_r, branch_bag& r_bag)
{
typename synth_access_traits::const_iterator left_b_it = pref_begin(p_l);
typename synth_access_traits::const_iterator left_e_it = pref_end(p_l);
typename synth_access_traits::const_iterator right_b_it = pref_begin(p_r);
typename synth_access_traits::const_iterator right_e_it = pref_end(p_r);
const size_type diff_ind = keys_diff_ind(left_b_it, left_e_it,
right_b_it, right_e_it);
inode_pointer p_new_nd = r_bag.get_branch();
new (p_new_nd) inode(diff_ind, left_b_it);
p_new_nd->add_child(p_l, left_b_it, left_e_it, this);
p_new_nd->add_child(p_r, right_b_it, right_e_it, this);
p_l->m_p_parent = p_new_nd;
p_r->m_p_parent = p_new_nd;
PB_DS_ASSERT_NODE_VALID(p_new_nd)
return (p_new_nd);
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
update_min_max_for_inserted_leaf(leaf_pointer p_new_lf)
{
if (m_p_head->m_p_min == m_p_head ||
synth_access_traits::cmp_keys(PB_DS_V2F(p_new_lf->value()),
PB_DS_V2F(static_cast<leaf_const_pointer>(m_p_head->m_p_min)->value())))
m_p_head->m_p_min = p_new_lf;
if (m_p_head->m_p_max == m_p_head ||
synth_access_traits::cmp_keys(PB_DS_V2F(static_cast<leaf_const_pointer>(m_p_head->m_p_max)->value()), PB_DS_V2F(p_new_lf->value())))
m_p_head->m_p_max = p_new_lf;
}