2 * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief a pointer hashset (WARNING: deprecated, use hashset_new.*
24 * @author Hubert Schmid
28 #ifndef FIRM_ADT_ESET_H
29 #define FIRM_ADT_ESET_H
36 * "eset" is a set of addresses. The addresses are used for element
37 * compare and hash calculation.
38 * The value "NULL" can not be stored, as it is used as internal sentinel.
40 typedef struct eset eset;
42 /** Creates a new empty set. */
43 FIRM_API eset *eset_create(void);
46 * Creates a copy of the given set. Does NOT work if NULL is contained in source. */
47 FIRM_API eset *eset_copy(eset *source);
50 FIRM_API void eset_destroy(eset *s);
52 /** Returns the number of elements in the set. */
53 FIRM_API size_t eset_count(eset *s);
55 /** Inserts an address into the set. */
56 FIRM_API void eset_insert(eset *s, void *p);
58 /** Checks, whether an address is element of a set. */
59 FIRM_API int eset_contains(eset *s, void *p);
62 * Starts the iteration over a set and returns the first element or NULL
63 * if the set is empty.
65 * @note: It is NOT possible to add new elements while iterating through a set.
67 FIRM_API void *eset_first(eset *s);
70 * Continues iteration through a set and returns the next element or NULL if the
71 * iteration is finished.
73 * @note: It is NOT possible to add new elements while iterating through a set.
75 FIRM_API void *eset_next(eset *s);
77 /** Inserts all elements of source into target (union). Does NOT work if NULL is contained in source. */
78 FIRM_API void eset_insert_all(eset *target, eset *source);
80 #define eset_foreach(eset, type, iter) \
81 for ((iter) = (type)eset_first((eset)); (iter) != NULL; (iter) = (type)eset_next((eset)))