src/uniqstr.h

   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_ */