mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-30 12:04:07 +00:00
169 lines
4.8 KiB
Groff
169 lines
4.8 KiB
Groff
.\" Copyright (c) 1989, 1990 The Regents of the University of California.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to Berkeley by
|
|
.\" Robert Paul Corbett.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)yacc.1 5.8 (Berkeley) 5/24/93
|
|
.\" $FreeBSD$
|
|
.\" $OpenBSD: yacc.1,v 1.14 2001/05/01 17:58:05 aaron Exp $
|
|
.\"
|
|
.Dd May 24, 1993
|
|
.Dt YACC 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm yacc
|
|
.Nd an LALR(1) parser generator
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl dlrtv
|
|
.Op Fl b Ar file_prefix
|
|
.Op Fl o Ar output_filename
|
|
.Op Fl p Ar symbol_prefix
|
|
.Ar filename
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility reads the grammar specification in the file
|
|
.Ar filename
|
|
and generates an LR(1) parser for it.
|
|
The parsers consist of a set of LALR(1) parsing tables and a driver routine
|
|
written in the C programming language.
|
|
The
|
|
.Nm
|
|
utility normally writes the parse tables and the driver routine to the file
|
|
.Pa y.tab.c .
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width indent
|
|
.It Fl b Ar file_prefix
|
|
Change the prefix prepended to the output file names to
|
|
the string denoted by
|
|
.Ar file_prefix .
|
|
The default prefix is the character
|
|
.Pa y .
|
|
.It Fl d
|
|
Cause the header file
|
|
.Pa y.tab.h
|
|
to be written.
|
|
.It Fl l
|
|
If the
|
|
.Fl l
|
|
option is not specified,
|
|
.Nm
|
|
will insert #line directives in the generated code.
|
|
The #line directives let the C compiler relate errors in the
|
|
generated code to the user's original code.
|
|
If the
|
|
.Fl l
|
|
option is specified,
|
|
.Nm
|
|
will not insert the #line directives.
|
|
Any #line directives specified by the user will be retained.
|
|
.It Fl o Ar output_filename
|
|
Cause
|
|
.Nm
|
|
to write the generated code to
|
|
.Ar output_filename
|
|
instead of the default file,
|
|
.Pa y.tab.c .
|
|
.It Fl p Ar symbol_prefix
|
|
Change the prefix prepended to yacc-generated symbols to
|
|
the string denoted by
|
|
.Ar symbol_prefix .
|
|
The default prefix is the string
|
|
.Pa yy .
|
|
.It Fl r
|
|
Cause
|
|
.Nm
|
|
to produce separate files for code and tables. The code file
|
|
is named
|
|
.Pa y.code.c ,
|
|
and the tables file is named
|
|
.Pa y.tab.c .
|
|
.It Fl t
|
|
Change the preprocessor directives generated by
|
|
.Nm
|
|
so that debugging statements will be incorporated in the compiled code.
|
|
.It Fl v
|
|
Cause a human-readable description of the generated parser to
|
|
be written to the file
|
|
.Pa y.output .
|
|
.El
|
|
.Sh ENVIRONMENT
|
|
.Bl -tag -width ".Ev TMPDIR"
|
|
.It Ev TMPDIR
|
|
Name of directory where temporary files are to be created.
|
|
.El
|
|
.Sh TABLES
|
|
The names of the tables generated by this version of
|
|
.Nm
|
|
are
|
|
.Va yylhs , yylen , yydefred , yydgoto , yysindex ,
|
|
.Va yyrindex , yygindex , yytable ,
|
|
and
|
|
.Va yycheck .
|
|
Two additional tables,
|
|
.Va yyname
|
|
and
|
|
.Va yyrule ,
|
|
are created if
|
|
.Dv YYDEBUG
|
|
is defined and non-zero.
|
|
.Sh FILES
|
|
.Bl -tag -width "Pa /tmp/yacc.aXXXXXXXXXX" -compact
|
|
.It Pa y.code.c
|
|
.It Pa y.tab.c
|
|
.It Pa y.tab.h
|
|
.It Pa y.output
|
|
.It Pa /tmp/yacc.aXXXXXXXXXX
|
|
.It Pa /tmp/yacc.tXXXXXXXXXX
|
|
.It Pa /tmp/yacc.uXXXXXXXXXX
|
|
.El
|
|
.Sh DIAGNOSTICS
|
|
If there are rules that are never reduced,
|
|
the number of such rules is reported on standard error.
|
|
If there are any
|
|
.Tn LALR(1)
|
|
conflicts,
|
|
the number of conflicts is reported on standard error.
|
|
.Sh SEE ALSO
|
|
.Xr yyfix 1
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in PWB UNIX.
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility conforms to
|
|
.St -p1003.2 .
|