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1 | /* Keeping a unique copy of strings. | |
2 | Copyright (C) 2002 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of Bison, the GNU Compiler Compiler. | |
5 | ||
6 | Bison is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | Bison is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with Bison; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef UNIQSTR_H_ | |
22 | # define UNIQSTR_H_ | |
23 | ||
24 | /*-----------------------------------------. | |
25 | | Pointers to unique copies of C strings. | | |
26 | `-----------------------------------------*/ | |
27 | ||
28 | typedef char const *uniqstr; | |
29 | ||
30 | /* Return the uniqstr for S. */ | |
31 | uniqstr uniqstr_new (char const *s); | |
32 | ||
33 | /* Two uniqstr have the same value iff they are the same. */ | |
34 | #define UNIQSTR_EQ(S1, S2) ((S1) == (S2)) | |
35 | ||
36 | /*--------------------------------------. | |
37 | | Initializing, destroying, debugging. | | |
38 | `--------------------------------------*/ | |
39 | ||
40 | /* Create the string table. */ | |
41 | void uniqstrs_new (void); | |
42 | ||
43 | /* Die if S is not a uniqstr. */ | |
44 | void uniqstr_assert (const char *s); | |
45 | ||
46 | /* Free all the memory allocated for symbols. */ | |
47 | void uniqstrs_free (void); | |
48 | ||
49 | /* Report them all. */ | |
50 | void uniqstrs_print (void); | |
51 | ||
52 | #endif /* ! defined UNIQSTR_H_ */ |