1 /* Keeping a unique copy of strings. 2 3 Copyright (C) 2002, 2003 Free Software Foundation, Inc. 4 5 This file is part of Bison, the GNU Compiler Compiler. 6 7 Bison is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 Bison is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with Bison; see the file COPYING. If not, write to 19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22 #ifndef UNIQSTR_H_ 23 # define UNIQSTR_H_ 24 25 /*-----------------------------------------. 26 | Pointers to unique copies of C strings. | 27 `-----------------------------------------*/ 28 29 typedef char const *uniqstr; 30 31 /* Return the uniqstr for STR. */ 32 uniqstr uniqstr_new (char const *str); 33 34 /* Two uniqstr values have the same value iff they are the same. */ 35 #define UNIQSTR_EQ(USTR1, USTR2) ((USTR1) == (USTR2)) 36 37 /*--------------------------------------. 38 | Initializing, destroying, debugging. | 39 `--------------------------------------*/ 40 41 /* Create the string table. */ 42 void uniqstrs_new (void); 43 44 /* Die if STR is not a uniqstr. */ 45 void uniqstr_assert (char const *str); 46 47 /* Free all the memory allocated for symbols. */ 48 void uniqstrs_free (void); 49 50 /* Report them all. */ 51 void uniqstrs_print (void); 52 53 #endif /* ! defined UNIQSTR_H_ */ 54