grammar: introduce %empty

[bison.git] / src / reader.h

diff --git a/src/reader.h b/src/reader.h
index 0e0b4e8be20a9077f0f065a70ac3c05c41b78384..ba6ffe6edca76c8a91d2a4a81c5ee9e03cbd034e 100644 (file)
--- a/src/reader.h
+++ b/src/reader.h
@@ -1,30 +1,29 @@
 /* Input parser for Bison
 
-   Copyright (C) 2000, 2001, 2002, 2003, 2005, 2006, 2007 Free Software
+   Copyright (C) 2000-2003, 2005-2007, 2009-2013 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
-   Bison is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   Bison is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef READER_H_
 # define READER_H_
 
 # include "location.h"
 # include "symlist.h"
+# include "named-ref.h"
 
 # include "parse-gram.h"
 
@@ -44,14 +43,19 @@ char const *token_name (int type);
 
 /* From reader.c. */
 void grammar_start_symbol_set (symbol *sym, location loc);
-void grammar_current_rule_begin (symbol *lhs, location loc);
+void grammar_current_rule_begin (symbol *lhs, location loc,
+                                 named_ref *lhs_named_ref);
 void grammar_current_rule_end (location loc);
 void grammar_midrule_action (void);
+/* Apply %empty to the current rule.  */
+void grammar_current_rule_empty_set (location loc);
 void grammar_current_rule_prec_set (symbol *precsym, location loc);
 void grammar_current_rule_dprec_set (int dprec, location loc);
 void grammar_current_rule_merge_set (uniqstr name, location loc);
-void grammar_current_rule_symbol_append (symbol *sym, location loc);
-void grammar_current_rule_action_append (const char *action, location loc);
+void grammar_current_rule_symbol_append (symbol *sym, location loc,
+                                         named_ref *nref);
+void grammar_current_rule_action_append (const char *action, location loc,
+                                         named_ref *nref, bool);
 void reader (void);
 void free_merger_functions (void);