If conflict resolution makes states unreachable, remove those states,

[bison.git] / src / conflicts.h

diff --git a/src/conflicts.h b/src/conflicts.h
index 2d814d74d814dd8c33533d04497a2a19a8166965..055905eb78a8acd0020af50ffb56f4aae33edd18 100644 (file)
--- a/src/conflicts.h
+++ b/src/conflicts.h
@@ -1,5 +1,5 @@
-/* Find and resolve or report look-ahead conflicts for bison,
-   Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+/* Find and resolve or report lookahead conflicts for bison,
+   Copyright (C) 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -15,19 +15,33 @@
 
    You should have received a copy of the GNU General Public License
    along with Bison; see the file COPYING.  If not, write to the Free
-   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-   02111-1307, USA.  */
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.  */
 
 #ifndef CONFLICTS_H_
 # define CONFLICTS_H_
 # include "state.h"
 
-void conflicts_solve PARAMS ((void));
-void conflicts_print PARAMS ((void));
-int conflicts_total_count PARAMS ((void));
-void conflicts_output PARAMS ((FILE *out));
-void conflicts_free PARAMS ((void));
+void conflicts_solve (void);
+
+/**
+ * Update state numbers recorded in internal arrays such that:
+ *   - \c nstates_old is the old number of states.
+ *   - Where \c i is the old state number, <tt>old_to_new[i]</tt> is either:
+ *     - \c nstates_old if state \c i is removed because it is unreachable.
+ *     - The new state number.
+ *   - The highest new state number is the number of remaining states - 1.
+ *   - The numerical order of the remaining states has not changed.
+ */
+void conflicts_update_state_numbers (state_number old_to_new[],
+                                     state_number nstates_old);
+
+void conflicts_print (void);
+int conflicts_total_count (void);
+void conflicts_output (FILE *out);
+void conflicts_free (void);
 
 /* Were there conflicts? */
-extern int expected_conflicts;
+extern int expected_sr_conflicts;
+extern int expected_rr_conflicts;
 #endif /* !CONFLICTS_H_ */