c4f2d992 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: set.h,v 1.1 1997/07/21 13:47:44 mdw Exp $ |
4 | * |
5 | * Management of sets (for the use of the class expression handler) |
6 | * |
7 | * (c) 1997 EBI |
8 | */ |
9 | |
10 | /*----- Licencing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of `become' |
13 | * |
14 | * `Become' is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * `Become' is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with `become'; if not, write to the Free Software |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: set.h,v $ |
32 | * Revision 1.1 1997/07/21 13:47:44 mdw |
33 | * Initial revision |
34 | * |
35 | */ |
36 | |
37 | #ifndef SET_H |
38 | #define SET_H |
39 | |
40 | #ifdef __cplusplus |
41 | extern "C" { |
42 | #endif |
43 | |
44 | /*----- Required headers --------------------------------------------------*/ |
45 | |
46 | #ifndef SYM_H |
47 | # include "sym.h" |
48 | #endif |
49 | |
50 | /*----- Functions provided ------------------------------------------------*/ |
51 | |
52 | /* --- @set_subtract@ --- * |
53 | * |
54 | * Arguments: @sym_table *a@ = pointer to table @A@ |
55 | * @sym_table *b@ = pointer to table @B@ |
56 | * |
57 | * Returns: A symbol table containing all the elements in @A@ which don't |
58 | * appear in @B@. |
59 | * |
60 | * Use: Subtracts a symbol table from another symbol table. Assumes |
61 | * that there's no data following the actual @sym_base@ block |
62 | * for each item in the table. |
63 | */ |
64 | |
65 | extern sym_table *set_subtract(sym_table */*a*/, sym_table */*b*/); |
66 | |
67 | /* --- @set_intersect@ --- * |
68 | * |
69 | * Arguments: @sym_table *a@ = pointer to table @A@ |
70 | * @sym_table *b@ = pointer to table @B@ |
71 | * |
72 | * Returns: A symbol table containing all the elements in @A@ which also |
73 | * appear in @B@. |
74 | * |
75 | * Use: Constructs the intersection of two symbol tables. Assumes |
76 | * that there's no data following the actual @sym_base@ block |
77 | * for each item in the table. |
78 | */ |
79 | |
80 | sym_table *set_intersect(sym_table */*a*/, sym_table */*b*/); |
81 | |
82 | /* --- @set_union@ --- * |
83 | * |
84 | * Arguments: @sym_table *a@ = pointer to table @A@ |
85 | * @sym_table *b@ = pointer to table @B@ |
86 | * |
87 | * Returns: A symbol table containing all the elements in @A@ and those |
88 | * in @B@. |
89 | * |
90 | * Use: Constructs the union of two symbol tables. Assumes that |
91 | * there's no data following the actual @sym_base@ block for |
92 | * each item in the table. |
93 | */ |
94 | |
95 | sym_table *set_union(sym_table */*a*/, sym_table */*b*/); |
96 | |
97 | /* --- @set_copy@ --- * |
98 | * |
99 | * Arguments: @sym_table *a@ = pointer to table |
100 | * |
101 | * Returns: A copy of the symbol table. |
102 | * |
103 | * Use: Copies a symbol table. Same assumptions again... |
104 | */ |
105 | |
106 | sym_table *set_copy(sym_table */*a*/); |
107 | |
108 | /*----- That's all, folks -------------------------------------------------*/ |
109 | |
110 | #ifdef __cplusplus |
111 | } |
112 | #endif |
113 | |
114 | #endif |