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/* Copyright (c) 2008 Derrick Coetzee
* http://en.literateprograms.org/Red-black_tree_(C)?oldid=7982
* Small changes by Ryah Dahl
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
* OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
* THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _RBTREE_H_
#define _RBTREE_H_
enum rbtree_node_color { RED, BLACK };
typedef int (*rbtree_compare_func)(void* left_key, void* right_key);
typedef struct rbtree_node_t {
struct rbtree_node_t* left; /* private */
struct rbtree_node_t* right; /* private */
struct rbtree_node_t* parent; /* private */
enum rbtree_node_color color; /* private */
void* key; /* public */
void* value; /* public */
} *rbtree_node;
typedef struct rbtree_t {
rbtree_node root; /* private */
rbtree_compare_func compare; /* private */
} *rbtree;
void rbtree_init(rbtree t, rbtree_compare_func);
void* rbtree_lookup(rbtree t, void* key);
void rbtree_insert(rbtree t, rbtree_node);
/* you must free the returned node */
rbtree_node rbtree_delete(rbtree t, void* key);
#endif
Version data entries
14 entries across 14 versions & 2 rubygems