src/conflicts.h

   1 /* Find and resolve or report lookahead conflicts for bison,
   2
   3    Copyright (C) 2000-2002, 2004, 2007, 2009-2015, 2018-2021 Free
   4    Software Foundation, Inc.
   5
   6    This file is part of Bison, the GNU Compiler Compiler.
   7
   8    This program is free software: you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation, either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  20
  21 #ifndef CONFLICTS_H_
  22 # define CONFLICTS_H_
  23 # include "state.h"
  24
  25 void conflicts_solve (void);
  26
  27 /**
  28  * Update state numbers recorded in internal arrays such that:
  29  *   - \c nstates_old is the old number of states.
  30  *   - Where \c i is the old state number, <tt>old_to_new[i]</tt> is either:
  31  *     - \c nstates_old if state \c i is removed because it is unreachable.
  32  *     - The new state number.
  33  *   - The highest new state number is the number of remaining states - 1.
  34  *   - The numerical order of the remaining states has not changed.
  35  */
  36 void conflicts_update_state_numbers (state_number old_to_new[],
  37                                      state_number nstates_old);
  38
  39 void conflicts_print (void);
  40 int conflicts_total_count (void);
  41 void conflicts_output (FILE *out);
  42 void conflicts_free (void);
  43
  44 bool has_conflicts (const state *s);
  45
  46 /* Were there conflicts? */
  47 extern int expected_sr_conflicts;
  48 extern int expected_rr_conflicts;
  49
  50 #endif /* !CONFLICTS_H_ */