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YYSTYPE if your grammar contains at least one <type> tag. Your YYSTYPE need not be a macro; it can be a typedef. * doc/bison.texinfo (Value Type, Multiple Types, Location Type): (Union Decl, Decl Summary): Document this. * data/glr.c (YYSTYPE): Implement this. * data/glr.cc (YYSTYPE): Likewise. * data/lalr1.cc (YYSTYPE): Likewise. * data/yacc.c (YYSTYPE): Likewise. * src/output.c (prepare): Output tag_seen_flag. * src/parse-gram.y (declaration, grammar_declaration): Use 'union_seen' rather than 'typed' to determine whether %union has been seen, since grammars can now be typed without %union. (symbol_declaration, type.opt, symbol_def): Keep track of whether a tag has been seen. * src/reader.c (union_seen, tag_seen): New vars. (typed): remove. * src/reader.h (union_seen, tag_seen, typed): Likewise. * src/scan-code.l (untyped_var_seen): New variable. (handle_action_dollar): Adjust to above changes. (handle_action_dollar, handle_action_at): Improve overflow checking for outlandish numbers. * tests/input.at (AT_CHECK_UNUSED_VALUES): Redo test to avoid new diagnostics generated by above changes. * tests/regression.at (YYSTYPE typedef): Add test to check for type tags without %union.
-*- outline -*- This directory contains Bison skeletons: the general shapes of the different parser kinds, that are specialized for specific grammars by the bison program. Currently, there are only three supported skeletons: - yacc.c It used to be named bison.simple: it corresponds to C Yacc compatible LALR(1) parsers. - lalr1.cc Produces a C++ parser class. It is still very experimental, and not yet supported. Please, subscribe to bison-patches@gnu.org. - glr.c A Generalized LR C parser based on Bison's LALR(1) tables. These skeletons are the only ones supported by the Bison team. Because the interface between skeletons and the bison program is not finished, *we are not bound to it*. In particular, Bison is not mature enough for us to consider that ``foreign skeletons'' are supported. ----- Copyright (C) 2002 Free Software Foundation, Inc. This file is part of GNU Bison. GNU Bison 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. GNU Bison 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.