src/derives.h

   1 /* Match rules with nonterminals for bison,
   2    Copyright (C) 1984, 1989, 2000 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 DERIVES_H_
  22 # define DERIVES_H_
  23
  24 extern short **derives;
  25
  26 /* set_derives finds, for each variable (nonterminal), which rules can
  27    derive it.  It sets up the value of derives so that derives[i -
  28    ntokens] points to a vector of rule numbers, terminated with -1.
  29    */
  30
  31 void set_derives PARAMS((void));
  32 void free_derives PARAMS((void));
  33
  34 #endif /* !DERIVES_H_ */