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README
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kmyacc version 4.1.4 (2006/02/15)
=================================
kmyacc is an LALR(1) parser generator, hopefully compatible with
AT&T yacc.
Features:
- Generates smaller table than Yacc/Berkeley yacc/Bison.
- Supports multi-language (currenly C and Java).
INSTALL
=======
(1) You must have ANSI C compiler.
(2) Read Makefile and change macro BIN and PARLIB appropriately.
(3) Type
make
make install
HOW TO USE
==========
Command
kmyacc foo.y
generates parser code "y.tab.c", same as original yacc.
Command
kmyacc Foo.jy
creates parser code "Foo.java", its class name is "Foo".
Synopsys:
kmyacc [ -dvltani ] [ -b X ] [ -p XX ] [ -m MODEL ] [ -L LANG ] grammar
Options:
-d Makes definition file named y.tab.h, which contains definitions of
token values and the type of semantic stack. (C language only)
-v Generates file y.output which contains human-readable parser
tables and diagnostics.
-l Does not insert #line control directives in y.tab.c.
-t Generates debugging code. Compiling with -DYYDEBUG option gives
the same effect.
-a Makes semantic actions individual functions rather than blocks in
one switch statement. This option is useful if your compiler
can not compile big functions/methods.
-b X
Uses X rather than y as the prefix of generated filenames.
X.tab.c for C, X.java for Java.
-p XX
Uses XX rather than yy as the prefix of global identifiers in
the parser. You can avoid collision of external symbols when
you use more than one parser in the same program by specifing
this option. (C language only)
-m MODEL
Uses file MODEL as prototype of parser code. When defaulted, file
/usr/local/lib/kmyacc.LANG.parser is taken, where LANG is a host
language name deduced from source file extension(.y/.jy), or one
specified by -L switch explicitly.
-L LANG
Specifies LANG as host programming language. c,java,javascript,perl
are available.
-n
Allows referencing semantic values by name.
-i
Inhibits referencing semantic values by $$, $1, $2 form.
Environment
KMYACCPAR Prototype file name. Same as -m option.
Differences between kmyacc and AT&T yacc
========================================
- Options -b, -p, -a, -m, -L added
- Bison's %expect, %pure_parser statement added
- Treat // as comment
- Following obsolete features deleted
o literal tokens surrounded by "
o \left, \right etc.
o %<, %>, %binary, %2, %0, %=
- YYBACKUP macro not supported
COPYRIGHT
=========
Copyright (C) 1987,1989,1992,1993,2005,2006 MORI Koichiro.
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 of the License, or
(at your option) any later version.
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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
CONTACT
=======
Bug reports, suggestions, patches are welcome.
Please send email to:
MORI Koichiro <kmori@acm.org>