Files
bison/data
Joel E. Denny 2e7944cbb2 Update etc/bench.pl. Optimize push mode a little (the yyn change
deserves most of the credit).
* Makefile.am (SUBDIRS): Add etc subdirectory.
* configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
* data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
yytoken, yyval, and yyloc declarations to...
(yyparse or yypush_parse): ... here to improve performance.  For
yypush_parse invocations after the first, be sure to assign yyn its old
value again.
(yypstate_new): Don't bother initializing the yyresult field since the
initial value isn't used.
(yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
remove the #define that, in push mode, set it to yyps->NAME.
* etc/Makefile.am: New.
* etc/bench.pl: Remove and build it instead from...
* etc/bench.pl.in: ... this new file.  Use @abs_top_builddir@ to invoke
"tests/bison" from the build directory by default rather than just
invoking "bison" from $PATH.
(calc_grammar): Update push parser code: don't declare yylval globally,
don't define yyparse_wrapper, and don't #define yyparse.
(bench_grammar): Update to check all working combinations of yacc.c,
push.c, impure, pure, pull, and push.
2006-12-26 18:09:53 +00:00
..
2005-11-14 08:13:07 +00:00
2002-02-25 14:27:12 +00:00
2005-05-14 06:49:48 +00:00

-*- 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.