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push skeleton doesn't have to list them again for pull mode's yyparse. For push mode, remove yypush_parse's local equivalents of these variables to eliminate unnecessary copying between the two sets at run-time. This patch also fixes at least a bug related to multiple %initial-action invocations in push mode. * data/push.c (b4_declare_parser_variables): Rename to... (b4_declare_scanner_communication_variables): ... this for clarity and update both uses. (b4_declare_yyparse_variables): Remove and move its contents to the one spot where it was invoked. (b4_declare_parser_state_variables): New macro containing the parser state variables required by push mode. (struct yypstate): Replace all fields but yynew with b4_declare_parser_state_variables. (yystate, yyn, yyresult, yyerrstatus, yytoken, yyss, yyssp, yyvs, yyvsp, yyls, yylsp, yystacksize, yyval, yyloc): For push mode, #define each NAME in this list to yyps->NAME so it can be used in yypush_parse. (yyparse or yypush_parse): For yyparse in pull mode, replace local parser state variable declarations with b4_declare_parser_state_variables. Don't initialize parser state variables when calling yypush_parse since yypstate_new already does that. Invoke the user's initial action only upon the first yypush_parse invocation. Remove all code that copies between the local parser state variables and the yypstate.
This directory contains the Bison parser generator. See the file INSTALL for generic compilation and installation instructions. See the file doc/FAQ for frequently asked questions. Bison requires GNU m4 1.4.3 or later. See: ftp://ftp.gnu.org/gnu/m4/m4-1.4.3.tar.gz Bison can work with pre-1.4.3 distributions of GNU m4 if they are sufficiently patched, but if you encounter a bug with an older distribution and report a bug we will probably suggest that you upgrade to 1.4.3 as the first step in trying to fix it. Please send bug reports to <bug-bison@gnu.org>. Please include the version number from `bison --version', and a complete, self-contained test case in each bug report. If you have questions about using Bison and the documentation does not answer them, please send mail to <help-bison@gnu.org>. ----- Copyright (C) 1992, 1998, 1999, 2003, 2004, 2005 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 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. 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 autoconf; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.