2 * Dictionary Abstract Data Type
3 * Copyright (C) 1997 Kaz Kylheku <kaz@ashi.footprints.net>
5 * Free Software License:
7 * All rights are reserved by the author, with the following exceptions:
8 * Permission is granted to freely reproduce and distribute this software,
9 * possibly in exchange for a fee, provided that this copyright notice appears
10 * intact. Permission is also granted to adapt this software to produce
11 * derivative works, as long as the modified versions carry this copyright
12 * notice and additional notices stating that the work has been modified.
13 * This source code may be translated into executable form and incorporated
14 * into proprietary software; there is no requirement for such software to
15 * contain a copyright notice related to this source.
17 * $Id: dict.h,v 1.3 2005/09/25 12:04:25 hasso Exp $
27 * Blurb for inclusion into C++ translation units
34 typedef unsigned long dictcount_t;
35 #define DICTCOUNT_T_MAX ULONG_MAX
38 * The dictionary is implemented as a red-black tree
41 typedef enum { dnode_red, dnode_black } dnode_color_t;
43 typedef struct dnode_t {
44 struct dnode_t *dict_left;
45 struct dnode_t *dict_right;
46 struct dnode_t *dict_parent;
47 dnode_color_t dict_color;
52 typedef int (*dict_comp_t)(const void *, const void *);
53 typedef dnode_t *(*dnode_alloc_t)(void *);
54 typedef void (*dnode_free_t)(dnode_t *, void *);
56 typedef struct dict_t {
58 dictcount_t dict_nodecount;
59 dictcount_t dict_maxcount;
60 dict_comp_t dict_compare;
61 dnode_alloc_t dict_allocnode;
62 dnode_free_t dict_freenode;
67 typedef void (*dnode_process_t)(dict_t *, dnode_t *, void *);
69 typedef struct dict_load_t {
74 extern dict_t *dict_create(dictcount_t, dict_comp_t);
75 extern void dict_set_allocator(dict_t *, dnode_alloc_t, dnode_free_t, void *);
76 extern void dict_destroy(dict_t *);
77 extern void dict_free_nodes(dict_t *);
78 extern void dict_free(dict_t *);
79 extern dict_t *dict_init(dict_t *, dictcount_t, dict_comp_t);
80 extern void dict_init_like(dict_t *, const dict_t *);
81 extern int dict_verify(dict_t *);
82 extern int dict_similar(const dict_t *, const dict_t *);
83 extern dnode_t *dict_lookup(dict_t *, const void *);
84 extern dnode_t *dict_lower_bound(dict_t *, const void *);
85 extern dnode_t *dict_upper_bound(dict_t *, const void *);
86 extern void dict_insert(dict_t *, dnode_t *, const void *);
87 extern dnode_t *dict_delete(dict_t *, dnode_t *);
88 extern int dict_alloc_insert(dict_t *, const void *, void *);
89 extern void dict_delete_free(dict_t *, dnode_t *);
90 extern dnode_t *dict_first(dict_t *);
91 extern dnode_t *dict_last(dict_t *);
92 extern dnode_t *dict_next(dict_t *, dnode_t *);
93 extern dnode_t *dict_prev(dict_t *, dnode_t *);
94 extern dictcount_t dict_count(dict_t *);
95 extern int dict_isempty(dict_t *);
96 extern int dict_isfull(dict_t *);
97 extern int dict_contains(dict_t *, dnode_t *);
98 extern void dict_allow_dupes(dict_t *);
99 extern int dnode_is_in_a_dict(dnode_t *);
100 extern dnode_t *dnode_create(void *);
101 extern dnode_t *dnode_init(dnode_t *, void *);
102 extern void dnode_destroy(dnode_t *);
103 extern void *dnode_get(dnode_t *);
104 extern const void *dnode_getkey(dnode_t *);
105 extern void dnode_put(dnode_t *, void *);
106 extern void dict_process(dict_t *, void *, dnode_process_t);
107 extern void dict_load_begin(dict_load_t *, dict_t *);
108 extern void dict_load_next(dict_load_t *, dnode_t *, const void *);
109 extern void dict_load_end(dict_load_t *);
110 extern void dict_merge(dict_t *, dict_t *);
112 #define dict_isfull(D) ((D)->dict_nodecount == (D)->dict_maxcount)
113 #define dict_count(D) ((D)->dict_nodecount)
114 #define dict_isempty(D) ((D)->dict_nodecount == 0)
115 #define dnode_get(N) ((N)->dict_data)
116 #define dnode_getkey(N) ((N)->dict_key)
117 #define dnode_put(N, X) ((N)->dict_data = (X))