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cstl_rb_tree.c
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/*
* The implementation of rb tree.
* Copyright (C) 2008,2009,2010 Wangbo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author e-mail: [email protected]
*/
/** include section **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <cstl/cstl_alloc.h>
#include <cstl/cstl_types.h>
#include <cstl/cstl_iterator.h>
#include <cstl/cstl_rb_tree_iterator.h>
#include <cstl/cstl_rb_tree_private.h>
#include <cstl/cstring.h>
/** local constant declaration and local macro section **/
#define _RB_TREE_NODE_SIZE(typesize)\
((typesize) + sizeof(rbnode_t) - 1)
/* macros for type informations */
#define _GET_RB_TREE_TYPE_SIZE(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._pt_type->_t_typesize)
#define _GET_RB_TREE_TYPE_NAME(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._sz_typename)
#define _GET_RB_TREE_TYPE_BASENAME(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._pt_type->_sz_typename)
#define _GET_RB_TREE_TYPE_INIT_FUNCTION(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._pt_type->_t_typeinit)
#define _GET_RB_TREE_TYPE_COPY_FUNCTION(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._pt_type->_t_typecopy)
#define _GET_RB_TREE_TYPE_LESS_FUNCTION(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._pt_type->_t_typeless)
#define _GET_RB_TREE_TYPE_DESTROY_FUNCTION(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._pt_type->_t_typedestroy)
#define _GET_RB_TREE_TYPE_STYLE(pt_rb_tree)\
((pt_rb_tree)->_t_typeinfo._t_style)
/** local data type declaration and local struct, union, enum section **/
/** local function prototype section **/
#ifndef NDEBUG
/*
* Assert support function.
*/
static bool_t _rb_tree_iterator_belong_to_rb_tree(
const rb_tree_t* cpt_rb_tree, rb_tree_iterator_t t_iter);
static bool_t _rb_tree_same_rb_tree_iterator_type(
const rb_tree_t* cpt_rb_tree, rb_tree_iterator_t t_iter);
static bool_t _find_iterator(
const rbnode_t* cpt_root, const rbnode_t* cpt_pos);
#endif /* NDEBUG */
static bool_t _rb_tree_same_type(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond);
/*
* Destroy the subtree with postorder traverse.
*/
static rbnode_t* _destroy_rb_tree(rb_tree_t* pt_rb_tree, rbnode_t* pt_root);
/*
* Travel subtree for find the value in preorder.
*/
static rbnode_t* _find_value(
const rb_tree_t* cpt_rb_tree, const rbnode_t* cpt_root, const void* cpv_value);
/*
* Insert the value into subtree.
*/
static rbnode_t* _insert_rbnode(rb_tree_t* pt_rb_tree, const void* cpv_value);
/*
* Rebalance the subtree.
*/
static void _rebalance_rb_tree(rb_tree_t* pt_rb_tree, rbnode_t* pt_pos);
/*
* Rebalance the subtree after deletion.
*/
static void _fixup_deletion(
rb_tree_t* pt_rb_tree, rbnode_t* pt_pos, rbnode_t* pt_parent);
/*
* Get minimum and maximum rbnode pointer.
*/
static rbnode_t* _get_min_rbnode(const rbnode_t* cpt_root);
static rbnode_t* _get_max_rbnode(const rbnode_t* cpt_root);
/*
* Get rb node color.
*/
static color_t _get_color(const rbnode_t* cpt_root);
/*
* Left rotate and right rotate.
*/
static rbnode_t* _widdershins_rotate(rbnode_t* pt_root);
static rbnode_t* _deasil_rotate(rbnode_t* pt_root);
/* initiallize the element */
static void _rb_tree_init_elem_auxiliary(rb_tree_t* pt_rb_tree, rbnode_t* pt_node);
/* element compare function auxiliary */
static void _rb_tree_elem_compare_auxiliary(const rb_tree_t* cpt_rb_tree,
const void* cpv_first, const void* cpv_second, void* pv_output);
/** exported global variable definition section **/
/** local global variable definition section **/
/** exported function implementation section **/
/* rb tree iterator function */
rb_tree_iterator_t _create_rb_tree_iterator(void)
{
rb_tree_iterator_t t_newiterator;
_GET_RB_TREE_COREPOS(t_newiterator) = NULL;
_GET_RB_TREE_POINTER(t_newiterator) = NULL;
_GET_CONTAINER(t_newiterator) = NULL;
return t_newiterator;
}
bool_t _rb_tree_iterator_equal(
rb_tree_iterator_t t_iterfirst, rb_tree_iterator_t t_itersecond)
{
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_iterfirst), t_iterfirst));
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_itersecond), t_itersecond));
if(_GET_RB_TREE_COREPOS(t_iterfirst) == _GET_RB_TREE_COREPOS(t_itersecond))
{
return true;
}
else
{
return false;
}
}
void _rb_tree_iterator_get_value(rb_tree_iterator_t t_iter, void* pv_value)
{
assert(pv_value != NULL);
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_iter), t_iter));
assert(!_rb_tree_iterator_equal(t_iter, _rb_tree_end(_GET_RB_TREE(t_iter))));
/* char* */
if(strncmp(_GET_RB_TREE_TYPE_BASENAME(_GET_RB_TREE(t_iter)),
_C_STRING_TYPE, _TYPE_NAME_SIZE) == 0)
{
*(char**)pv_value = (char*)string_c_str(
(string_t*)((rbnode_t*)_GET_RB_TREE_COREPOS(t_iter))->_pc_data);
}
else
{
bool_t t_result = _GET_RB_TREE_TYPE_SIZE(_GET_RB_TREE(t_iter));
_GET_RB_TREE_TYPE_COPY_FUNCTION(_GET_RB_TREE(t_iter))(
pv_value, ((rbnode_t*)_GET_RB_TREE_COREPOS(t_iter))->_pc_data, &t_result);
assert(t_result);
}
}
const void* _rb_tree_iterator_get_pointer(rb_tree_iterator_t t_iter)
{
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_iter), t_iter));
assert(!_rb_tree_iterator_equal(t_iter, _rb_tree_end(_GET_RB_TREE(t_iter))));
/* char* */
if(strncmp(_GET_RB_TREE_TYPE_BASENAME(_GET_RB_TREE(t_iter)),
_C_STRING_TYPE, _TYPE_NAME_SIZE) == 0)
{
return (char*)string_c_str(
(string_t*)((rbnode_t*)_GET_RB_TREE_COREPOS(t_iter))->_pc_data);
}
else
{
return ((rbnode_t*)_GET_RB_TREE_COREPOS(t_iter))->_pc_data;
}
}
rb_tree_iterator_t _rb_tree_iterator_next(rb_tree_iterator_t t_iter)
{
rbnode_t* pt_next = NULL; /* next pos */
rbnode_t* pt_cur = (rbnode_t*)_GET_RB_TREE_COREPOS(t_iter);
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_iter), t_iter));
assert(!_rb_tree_iterator_equal(t_iter, _rb_tree_end(_GET_RB_TREE(t_iter))));
if(pt_cur->_pt_right != NULL)
{
pt_next = pt_cur->_pt_right;
while(pt_next->_pt_left != NULL)
{
pt_next = pt_next->_pt_left;
}
_GET_RB_TREE_COREPOS(t_iter) = (char*)pt_next;
}
else
{
pt_next = pt_cur->_pt_parent;
while(pt_cur == pt_next->_pt_right)
{
pt_cur = pt_next;
pt_next = pt_next->_pt_parent;
}
/*
* this is special condition, when the next pos is root's parent.
* when the rb tree has only one node, this condition is came.
*/
if(pt_cur->_pt_right != pt_next)
{
_GET_RB_TREE_COREPOS(t_iter) = (char*)pt_next;
}
else /* here is special condition */
{
_GET_RB_TREE_COREPOS(t_iter) = (char*)pt_cur;
}
}
return t_iter;
}
rb_tree_iterator_t _rb_tree_iterator_prev(rb_tree_iterator_t t_iter)
{
rbnode_t* pt_prev = NULL;
rbnode_t* pt_cur = (rbnode_t*)_GET_RB_TREE_COREPOS(t_iter);
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_iter), t_iter));
assert(!_rb_tree_iterator_equal(t_iter, _rb_tree_begin(_GET_RB_TREE(t_iter))));
/* previous end */
if(_rb_tree_iterator_equal(t_iter, _rb_tree_end(_GET_RB_TREE(t_iter))))
{
_GET_RB_TREE_COREPOS(t_iter) = (char*)_GET_RB_TREE(t_iter)->_t_rbroot._pt_right;
}
else
{
if(pt_cur->_pt_left != NULL)
{
pt_prev = pt_cur->_pt_left;
while(pt_prev->_pt_right != NULL)
{
pt_prev = pt_prev->_pt_right;
}
_GET_RB_TREE_COREPOS(t_iter) = (char*)pt_prev;
}
else
{
pt_prev = pt_cur->_pt_parent;
while(pt_cur == pt_prev->_pt_left)
{
pt_cur = pt_prev;
pt_prev = pt_prev->_pt_parent;
}
/*
* there is no same special condition as next, because the begin
* iterator is the valid iterator
*/
_GET_RB_TREE_COREPOS(t_iter) = (char*)pt_prev;
}
}
return t_iter;
}
int _rb_tree_iterator_distance(
rb_tree_iterator_t t_iterfirst, rb_tree_iterator_t t_itersecond)
{
rb_tree_iterator_t t_iterator;
int n_distance = 0;
if(_rb_tree_iterator_before(t_iterfirst, t_itersecond))
{
for(t_iterator = t_iterfirst;
!_rb_tree_iterator_equal(t_iterator, t_itersecond);
t_iterator = _rb_tree_iterator_next(t_iterator))
{
n_distance++;
}
return n_distance;
}
else if(_rb_tree_iterator_before(t_itersecond, t_iterfirst))
{
for(t_iterator = t_itersecond;
!_rb_tree_iterator_equal(t_iterator, t_iterfirst);
t_iterator = _rb_tree_iterator_next(t_iterator))
{
n_distance++;
}
return -n_distance;
}
else
{
return 0;
}
}
bool_t _rb_tree_iterator_before(
rb_tree_iterator_t t_iterfirst, rb_tree_iterator_t t_itersecond)
{
rb_tree_iterator_t t_iterator;
rb_tree_t* pt_rb_tree = NULL;
assert(_GET_RB_TREE(t_iterfirst) == _GET_RB_TREE(t_itersecond));
assert(_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_iterfirst), t_iterfirst) &&
_rb_tree_iterator_belong_to_rb_tree(_GET_RB_TREE(t_itersecond), t_itersecond));
assert(_GET_RB_TREE(t_iterfirst) != NULL &&
_GET_RB_TREE(t_itersecond) != NULL);
assert(_GET_RB_TREE_COREPOS(t_iterfirst) != NULL &&
_GET_RB_TREE_COREPOS(t_itersecond) != NULL);
/* first iterator equal to second iterator */
if(_GET_RB_TREE_COREPOS(t_iterfirst) == _GET_RB_TREE_COREPOS(t_itersecond))
{
return false;
}
/* else travel subtree for search second iterator */
pt_rb_tree = _GET_RB_TREE(t_iterfirst);
for(t_iterator = t_iterfirst;
!_rb_tree_iterator_equal(t_iterator, _rb_tree_end(pt_rb_tree));
t_iterator = _rb_tree_iterator_next(t_iterator))
{
if(_rb_tree_iterator_equal(t_iterator, t_itersecond))
{
return true;
}
}
if(_rb_tree_iterator_equal(t_itersecond, _rb_tree_end(pt_rb_tree)))
{
return true;
}
else
{
return false;
}
}
/* rb tree private function */
rb_tree_t* _create_rb_tree(const char* s_typename)
{
rb_tree_t* pt_newrbtree = NULL;
if((pt_newrbtree = (rb_tree_t*)malloc(sizeof(rb_tree_t))) == NULL)
{
return NULL;
}
if(!_create_rb_tree_auxiliary(pt_newrbtree, s_typename))
{
free(pt_newrbtree);
return NULL;
}
return pt_newrbtree;
}
bool_t _create_rb_tree_auxiliary(rb_tree_t* pt_rb_tree, const char* s_typename)
{
/* get type information */
_type_get_type(&pt_rb_tree->_t_typeinfo, s_typename);
if(pt_rb_tree->_t_typeinfo._t_style == _TYPE_INVALID)
{
return false;
}
pt_rb_tree->_t_rbroot._pt_parent = NULL;
pt_rb_tree->_t_rbroot._pt_left = NULL;
pt_rb_tree->_t_rbroot._pt_right = NULL;
pt_rb_tree->_t_rbroot._t_color = red;
pt_rb_tree->_t_nodecount = 0;
pt_rb_tree->_t_compare = NULL;
return true;
}
void _rb_tree_init(rb_tree_t* pt_rb_tree, binary_function_t t_compare)
{
assert(pt_rb_tree != NULL &&
pt_rb_tree->_t_nodecount == 0 &&
pt_rb_tree->_t_rbroot._pt_parent == NULL &&
pt_rb_tree->_t_rbroot._pt_left == NULL &&
pt_rb_tree->_t_rbroot._pt_right == NULL &&
pt_rb_tree->_t_rbroot._t_color == red &&
pt_rb_tree->_t_compare == NULL);
pt_rb_tree->_t_rbroot._pt_left = &pt_rb_tree->_t_rbroot;
pt_rb_tree->_t_rbroot._pt_right = &pt_rb_tree->_t_rbroot;
allocate_init(&pt_rb_tree->_t_allocater);
if(t_compare != NULL)
{
pt_rb_tree->_t_compare = t_compare;
}
else
{
pt_rb_tree->_t_compare = _GET_RB_TREE_TYPE_LESS_FUNCTION(pt_rb_tree);
}
}
void _rb_tree_destroy_auxiliary(rb_tree_t* pt_rb_tree)
{
assert(pt_rb_tree != NULL);
/* destroy all elements */
pt_rb_tree->_t_rbroot._pt_parent =
_destroy_rb_tree(pt_rb_tree, pt_rb_tree->_t_rbroot._pt_parent);
assert(pt_rb_tree->_t_rbroot._pt_parent == NULL);
pt_rb_tree->_t_rbroot._pt_left = &pt_rb_tree->_t_rbroot;
pt_rb_tree->_t_rbroot._pt_right = &pt_rb_tree->_t_rbroot;
pt_rb_tree->_t_nodecount = 0;
/* destroy allocator */
allocate_destroy(&pt_rb_tree->_t_allocater);
pt_rb_tree->_t_compare = NULL;
}
void _rb_tree_destroy(rb_tree_t* pt_rb_tree)
{
_rb_tree_destroy_auxiliary(pt_rb_tree);
free(pt_rb_tree);
}
void _rb_tree_init_copy(
rb_tree_t* pt_rb_tree_dest, const rb_tree_t* cpt_rb_tree_src)
{
assert(pt_rb_tree_dest != NULL && cpt_rb_tree_src != NULL);
assert(pt_rb_tree_dest->_t_typeinfo._pt_type == cpt_rb_tree_src->_t_typeinfo._pt_type);
/* init the rb tree with the src rb tree */
_rb_tree_init(pt_rb_tree_dest, cpt_rb_tree_src->_t_compare);
/* insert all elements of src into dest */
if(!_rb_tree_empty(cpt_rb_tree_src))
{
_rb_tree_insert_equal_range(pt_rb_tree_dest,
_rb_tree_begin(cpt_rb_tree_src), _rb_tree_end(cpt_rb_tree_src));
}
}
void _rb_tree_init_copy_range(
rb_tree_t* pt_rb_tree_dest, rb_tree_iterator_t t_begin, rb_tree_iterator_t t_end)
{
assert(pt_rb_tree_dest != NULL);
assert(pt_rb_tree_dest->_t_typeinfo._pt_type ==
_GET_RB_TREE(t_begin)->_t_typeinfo._pt_type);
assert(_rb_tree_iterator_equal(t_begin, t_end) ||
_rb_tree_iterator_before(t_begin, t_end));
/* init the rb tree with the src rb tree */
_rb_tree_init(pt_rb_tree_dest,
_GET_RB_TREE_TYPE_LESS_FUNCTION(_GET_RB_TREE(t_begin)));
/* insert all elements of src into dest */
if(!_rb_tree_empty(_GET_RB_TREE(t_begin)))
{
_rb_tree_insert_equal_range(pt_rb_tree_dest, t_begin, t_end);
}
}
void _rb_tree_init_copy_range_ex(
rb_tree_t* pt_rb_tree_dest, rb_tree_iterator_t t_begin, rb_tree_iterator_t t_end,
binary_function_t t_compare)
{
assert(pt_rb_tree_dest != NULL);
assert(pt_rb_tree_dest->_t_typeinfo._pt_type ==
_GET_RB_TREE(t_begin)->_t_typeinfo._pt_type);
assert(_rb_tree_iterator_equal(t_begin, t_end) ||
_rb_tree_iterator_before(t_begin, t_end));
/* init the rb tree with the src rb tree */
_rb_tree_init(pt_rb_tree_dest, t_compare);
/* insert all elements of src into dest */
if(!_rb_tree_empty(_GET_RB_TREE(t_begin)))
{
_rb_tree_insert_equal_range(pt_rb_tree_dest, t_begin, t_end);
}
}
void _rb_tree_assign(rb_tree_t* pt_rb_tree_dest, const rb_tree_t* cpt_rb_tree_src)
{
assert(_rb_tree_same_type(pt_rb_tree_dest, cpt_rb_tree_src));
/* clear dest rb tree */
_rb_tree_clear(pt_rb_tree_dest);
/* insert all elements of src into dest */
if(!_rb_tree_empty(cpt_rb_tree_src))
{
_rb_tree_insert_equal_range(pt_rb_tree_dest,
_rb_tree_begin(cpt_rb_tree_src), _rb_tree_end(cpt_rb_tree_src));
}
}
bool_t _rb_tree_empty(const rb_tree_t* cpt_rb_tree)
{
assert(cpt_rb_tree != NULL);
if(cpt_rb_tree->_t_nodecount == 0)
{
return true;
}
else
{
return false;
}
}
size_t _rb_tree_size(const rb_tree_t* cpt_rb_tree)
{
assert(cpt_rb_tree != NULL);
return cpt_rb_tree->_t_nodecount;
}
size_t _rb_tree_max_size(const rb_tree_t* cpt_rb_tree)
{
assert(cpt_rb_tree != NULL);
return (size_t)(-1) / _GET_RB_TREE_TYPE_SIZE(cpt_rb_tree);
}
rb_tree_iterator_t _rb_tree_begin(const rb_tree_t* cpt_rb_tree)
{
rb_tree_iterator_t t_newiterator = _create_rb_tree_iterator();
assert(cpt_rb_tree != NULL);
_GET_RB_TREE_POINTER(t_newiterator) = (void*)cpt_rb_tree;
_GET_RB_TREE_COREPOS(t_newiterator) = (char*)cpt_rb_tree->_t_rbroot._pt_left;
return t_newiterator;
}
rb_tree_iterator_t _rb_tree_end(const rb_tree_t* cpt_rb_tree)
{
rb_tree_iterator_t t_newiterator = _create_rb_tree_iterator();
assert(cpt_rb_tree != NULL);
_GET_RB_TREE_POINTER(t_newiterator) = (void*)cpt_rb_tree;
_GET_RB_TREE_COREPOS(t_newiterator) = (char*)&cpt_rb_tree->_t_rbroot;
return t_newiterator;
}
rb_tree_iterator_t _rb_tree_rend(const rb_tree_t* cpt_rb_tree)
{
rb_tree_iterator_t t_newiterator = _create_rb_tree_iterator();
assert(cpt_rb_tree != NULL);
_GET_RB_TREE_POINTER(t_newiterator) = (void*)cpt_rb_tree;
_GET_RB_TREE_COREPOS(t_newiterator) = (char*)&cpt_rb_tree->_t_rbroot;
return t_newiterator;
}
rb_tree_iterator_t _rb_tree_rbegin(const rb_tree_t* cpt_rb_tree)
{
rb_tree_iterator_t t_newiterator = _create_rb_tree_iterator();
assert(cpt_rb_tree != NULL);
_GET_RB_TREE_POINTER(t_newiterator) = (void*)cpt_rb_tree;
_GET_RB_TREE_COREPOS(t_newiterator) = (char*)cpt_rb_tree->_t_rbroot._pt_right;
return t_newiterator;
}
binary_function_t _rb_tree_key_comp(const rb_tree_t* cpt_rb_tree)
{
assert(cpt_rb_tree != NULL);
return cpt_rb_tree->_t_compare;
}
rb_tree_iterator_t _rb_tree_find(
const rb_tree_t* cpt_rb_tree, const void* cpv_value)
{
rb_tree_iterator_t t_iterator;
assert(cpt_rb_tree != NULL && cpv_value != NULL);
_GET_RB_TREE_POINTER(t_iterator) = (void*)cpt_rb_tree;
_GET_RB_TREE_COREPOS(t_iterator) = (char*)_find_value(
cpt_rb_tree, cpt_rb_tree->_t_rbroot._pt_parent, cpv_value);
if(_GET_RB_TREE_COREPOS(t_iterator) == NULL)
{
_GET_RB_TREE_COREPOS(t_iterator) = (char*)&cpt_rb_tree->_t_rbroot;
}
return t_iterator;
}
void _rb_tree_clear(rb_tree_t* pt_rb_tree)
{
assert(pt_rb_tree != NULL);
pt_rb_tree->_t_rbroot._pt_parent = _destroy_rb_tree(
pt_rb_tree, pt_rb_tree->_t_rbroot._pt_parent);
assert(pt_rb_tree->_t_rbroot._pt_parent == NULL);
pt_rb_tree->_t_rbroot._pt_left = &pt_rb_tree->_t_rbroot;
pt_rb_tree->_t_rbroot._pt_right = &pt_rb_tree->_t_rbroot;
pt_rb_tree->_t_nodecount = 0;
}
bool_t _rb_tree_equal(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond)
{
rb_tree_iterator_t t_first;
rb_tree_iterator_t t_second;
bool_t t_less = false;
bool_t t_greater = false;
assert(cpt_rb_treefirst != NULL && cpt_rb_treesecond != NULL);
/* test type */
if(!_rb_tree_same_type(cpt_rb_treefirst, cpt_rb_treesecond))
{
return false;
}
/* test rb tree size */
if(_rb_tree_size(cpt_rb_treefirst) != _rb_tree_size(cpt_rb_treesecond))
{
return false;
}
/* test each element */
for(t_first = _rb_tree_begin(cpt_rb_treefirst),
t_second = _rb_tree_begin(cpt_rb_treesecond);
!_rb_tree_iterator_equal(t_first, _rb_tree_end(cpt_rb_treefirst)) &&
!_rb_tree_iterator_equal(t_second, _rb_tree_end(cpt_rb_treesecond));
t_first = _rb_tree_iterator_next(t_first),
t_second = _rb_tree_iterator_next(t_second))
{
t_less = t_greater = _GET_RB_TREE_TYPE_SIZE(cpt_rb_treefirst);
_GET_RB_TREE_TYPE_LESS_FUNCTION(cpt_rb_treefirst)(
((rbnode_t*)_GET_RB_TREE_COREPOS(t_first))->_pc_data,
((rbnode_t*)_GET_RB_TREE_COREPOS(t_second))->_pc_data, &t_less);
_GET_RB_TREE_TYPE_LESS_FUNCTION(cpt_rb_treefirst)(
((rbnode_t*)_GET_RB_TREE_COREPOS(t_second))->_pc_data,
((rbnode_t*)_GET_RB_TREE_COREPOS(t_first))->_pc_data, &t_greater);
if(t_less || t_greater)
{
return false;
}
}
assert(_rb_tree_iterator_equal(t_first, _rb_tree_end(cpt_rb_treefirst)) &&
_rb_tree_iterator_equal(t_second, _rb_tree_end(cpt_rb_treesecond)));
return true;
}
bool_t _rb_tree_not_equal(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond)
{
return!_rb_tree_equal(cpt_rb_treefirst, cpt_rb_treesecond);
}
bool_t _rb_tree_less(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond)
{
rb_tree_iterator_t t_first;
rb_tree_iterator_t t_second;
bool_t t_result = false;
assert(_rb_tree_same_type(cpt_rb_treefirst, cpt_rb_treesecond));
/* test each element */
for(t_first = _rb_tree_begin(cpt_rb_treefirst),
t_second = _rb_tree_begin(cpt_rb_treesecond);
!_rb_tree_iterator_equal(t_first, _rb_tree_end(cpt_rb_treefirst)) &&
!_rb_tree_iterator_equal(t_second, _rb_tree_end(cpt_rb_treesecond));
t_first = _rb_tree_iterator_next(t_first),
t_second = _rb_tree_iterator_next(t_second))
{
t_result = _GET_RB_TREE_TYPE_SIZE(cpt_rb_treefirst);
_GET_RB_TREE_TYPE_LESS_FUNCTION(cpt_rb_treefirst)(
((rbnode_t*)_GET_RB_TREE_COREPOS(t_first))->_pc_data,
((rbnode_t*)_GET_RB_TREE_COREPOS(t_second))->_pc_data, &t_result);
if(t_result)
{
return true;
}
t_result = _GET_RB_TREE_TYPE_SIZE(cpt_rb_treefirst);
_GET_RB_TREE_TYPE_LESS_FUNCTION(cpt_rb_treefirst)(
((rbnode_t*)_GET_RB_TREE_COREPOS(t_second))->_pc_data,
((rbnode_t*)_GET_RB_TREE_COREPOS(t_first))->_pc_data, &t_result);
if(t_result)
{
return false;
}
}
if(_rb_tree_size(cpt_rb_treefirst) < _rb_tree_size(cpt_rb_treesecond))
{
return true;
}
else
{
return false;
}
}
bool_t _rb_tree_less_equal(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond)
{
return (_rb_tree_less(cpt_rb_treefirst, cpt_rb_treesecond) ||
_rb_tree_equal(cpt_rb_treefirst, cpt_rb_treesecond)) ? true : false;
}
bool_t _rb_tree_greater(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond)
{
return _rb_tree_less(cpt_rb_treesecond, cpt_rb_treefirst);
}
bool_t _rb_tree_greater_equal(
const rb_tree_t* cpt_rb_treefirst, const rb_tree_t* cpt_rb_treesecond)
{
return (_rb_tree_greater(cpt_rb_treefirst, cpt_rb_treesecond) ||
_rb_tree_equal(cpt_rb_treefirst, cpt_rb_treesecond)) ? true : false;
}
void _rb_tree_swap(rb_tree_t* pt_rb_treefirst, rb_tree_t* pt_rb_treesecond)
{
rb_tree_t t_rb_treetmp;
assert(pt_rb_treefirst != NULL && pt_rb_treesecond != NULL);
t_rb_treetmp = *pt_rb_treefirst;
*pt_rb_treefirst = *pt_rb_treesecond;
*pt_rb_treesecond = t_rb_treetmp;
if(_rb_tree_empty(pt_rb_treefirst))
{
pt_rb_treefirst->_t_rbroot._pt_left = &pt_rb_treefirst->_t_rbroot;
pt_rb_treefirst->_t_rbroot._pt_right = &pt_rb_treefirst->_t_rbroot;
}
else
{
pt_rb_treefirst->_t_rbroot._pt_parent->_pt_parent =
&pt_rb_treefirst->_t_rbroot;
}
if(_rb_tree_empty(pt_rb_treesecond))
{
pt_rb_treesecond->_t_rbroot._pt_left = &pt_rb_treesecond->_t_rbroot;
pt_rb_treesecond->_t_rbroot._pt_right = &pt_rb_treesecond->_t_rbroot;
}
else
{
pt_rb_treesecond->_t_rbroot._pt_parent->_pt_parent =
&pt_rb_treesecond->_t_rbroot;
}
}
size_t _rb_tree_count(const rb_tree_t* cpt_rb_tree, const void* cpv_value)
{
range_t t_range;
assert(cpt_rb_tree != NULL && cpv_value != NULL);
t_range = _rb_tree_equal_range(cpt_rb_tree, cpv_value);
return abs(_rb_tree_iterator_distance(t_range.it_begin, t_range.it_end));
}
rb_tree_iterator_t _rb_tree_lower_bound(
const rb_tree_t* cpt_rb_tree, const void* cpv_value)
{
rbnode_t* pt_cur = NULL;
rbnode_t* pt_prev = NULL;
rb_tree_iterator_t t_iterator;
bool_t t_less = false;
bool_t t_greater = false;
assert(cpt_rb_tree != NULL && cpv_value != NULL);
t_iterator = _create_rb_tree_iterator();
_GET_RB_TREE_POINTER(t_iterator) = (void*)cpt_rb_tree;
if(!_rb_tree_empty(cpt_rb_tree))
{
pt_prev = cpt_rb_tree->_t_rbroot._pt_parent;
t_less = t_greater = _GET_RB_TREE_TYPE_SIZE(cpt_rb_tree);
_rb_tree_elem_compare_auxiliary(cpt_rb_tree, cpv_value, pt_prev->_pc_data, &t_less);
_rb_tree_elem_compare_auxiliary(cpt_rb_tree, pt_prev->_pc_data, cpv_value, &t_greater);
if(t_less || !t_greater)
{
pt_cur = pt_prev->_pt_left;
}
else
{
pt_cur = pt_prev->_pt_right;
}
while(pt_cur != NULL)
{
pt_prev = pt_cur;
t_less = t_greater = _GET_RB_TREE_TYPE_SIZE(cpt_rb_tree);
_rb_tree_elem_compare_auxiliary(cpt_rb_tree, cpv_value, pt_prev->_pc_data, &t_less);
_rb_tree_elem_compare_auxiliary(cpt_rb_tree, pt_prev->_pc_data, cpv_value, &t_greater);
if(t_less || !t_greater)
{
pt_cur = pt_prev->_pt_left;
}
else
{
pt_cur = pt_prev->_pt_right;
}
}
if(t_less || !t_greater)
{
assert(pt_prev->_pt_left == NULL);
_GET_RB_TREE_COREPOS(t_iterator) = (char*)pt_prev;
assert(_rb_tree_iterator_belong_to_rb_tree(cpt_rb_tree, t_iterator));
}
else
{
assert(pt_prev->_pt_right == NULL);
_GET_RB_TREE_COREPOS(t_iterator) = (char*)pt_prev;
t_iterator = _rb_tree_iterator_next(t_iterator);
}
}
else
{
t_iterator = _rb_tree_end(cpt_rb_tree);
}
return t_iterator;
}
rb_tree_iterator_t _rb_tree_upper_bound(
const rb_tree_t* cpt_rb_tree, const void* cpv_value)
{
rbnode_t* pt_cur = NULL;
rbnode_t* pt_prev = NULL;
rb_tree_iterator_t t_iterator;
bool_t t_result = false;
assert(cpt_rb_tree != NULL && cpv_value != NULL);
t_iterator = _create_rb_tree_iterator();
_GET_RB_TREE_POINTER(t_iterator) = (void*)cpt_rb_tree;
if(!_rb_tree_empty(cpt_rb_tree))
{
pt_prev = cpt_rb_tree->_t_rbroot._pt_parent;
t_result = _GET_RB_TREE_TYPE_SIZE(cpt_rb_tree);
_rb_tree_elem_compare_auxiliary(cpt_rb_tree, cpv_value, pt_prev->_pc_data, &t_result);
if(t_result)
{
pt_cur = pt_prev->_pt_left;
}
else
{
pt_cur = pt_prev->_pt_right;
}
while(pt_cur != NULL)
{
pt_prev = pt_cur;
t_result = _GET_RB_TREE_TYPE_SIZE(cpt_rb_tree);
_rb_tree_elem_compare_auxiliary(cpt_rb_tree, cpv_value, pt_prev->_pc_data, &t_result);
if(t_result)
{
pt_cur = pt_prev->_pt_left;
}
else
{
pt_cur = pt_prev->_pt_right;
}
}
if(t_result)
{
assert(pt_prev->_pt_left == NULL);
_GET_RB_TREE_COREPOS(t_iterator) = (char*)pt_prev;
assert(_rb_tree_iterator_belong_to_rb_tree(cpt_rb_tree, t_iterator));
}
else
{
assert(pt_prev->_pt_right == NULL);
_GET_RB_TREE_COREPOS(t_iterator) = (char*)pt_prev;
t_iterator = _rb_tree_iterator_next(t_iterator);
}
}
else
{
t_iterator = _rb_tree_end(cpt_rb_tree);
}
return t_iterator;
}
range_t _rb_tree_equal_range(const rb_tree_t* cpt_rb_tree, const void* cpv_value)
{
range_t t_range;
assert(cpt_rb_tree != NULL && cpv_value != NULL);
t_range.it_begin = _rb_tree_lower_bound(cpt_rb_tree, cpv_value);
t_range.it_end = _rb_tree_upper_bound(cpt_rb_tree, cpv_value);
return t_range;
}
rb_tree_iterator_t _rb_tree_insert_equal(rb_tree_t* pt_rb_tree, const void* cpv_value)
{
rb_tree_iterator_t t_iterator = _create_rb_tree_iterator();
assert(pt_rb_tree != NULL && cpv_value != NULL);
_GET_RB_TREE_POINTER(t_iterator) = pt_rb_tree;
_GET_RB_TREE_COREPOS(t_iterator) = (char*)_insert_rbnode(pt_rb_tree, cpv_value);
pt_rb_tree->_t_rbroot._pt_left = _get_min_rbnode(pt_rb_tree->_t_rbroot._pt_parent);
pt_rb_tree->_t_rbroot._pt_right = _get_max_rbnode(pt_rb_tree->_t_rbroot._pt_parent);
pt_rb_tree->_t_nodecount++;
return t_iterator;
}
rb_tree_iterator_t _rb_tree_insert_unique(rb_tree_t* pt_rb_tree, const void* cpv_value)
{
assert(pt_rb_tree != NULL && cpv_value != NULL);
/* if the rb tree is empty */
if(_rb_tree_empty(pt_rb_tree))
{
return _rb_tree_insert_equal(pt_rb_tree, cpv_value);
}
else
{
/* find value in rb tree */
rb_tree_iterator_t t_iter = _rb_tree_find(pt_rb_tree, cpv_value);
/* if the value is exist */
if(!_rb_tree_iterator_equal(t_iter, _rb_tree_end(pt_rb_tree)))
{
return _rb_tree_end(pt_rb_tree);
}
else
{
/* insert value into rb tree */
return _rb_tree_insert_equal(pt_rb_tree, cpv_value);
}
}
}
void _rb_tree_insert_equal_range(
rb_tree_t* pt_rb_tree, rb_tree_iterator_t t_begin, rb_tree_iterator_t t_end)
{
rb_tree_iterator_t t_iterator;
assert(_rb_tree_same_rb_tree_iterator_type(pt_rb_tree, t_begin));
assert(_rb_tree_iterator_equal(t_begin, t_end) ||
_rb_tree_iterator_before(t_begin, t_end));
for(t_iterator = t_begin;
!_rb_tree_iterator_equal(t_iterator, t_end);
t_iterator = _rb_tree_iterator_next(t_iterator))
{
_rb_tree_insert_equal(pt_rb_tree,
((rbnode_t*)_GET_RB_TREE_COREPOS(t_iterator))->_pc_data);
}
}