[unix-history] / usr / src / usr.bin / yacc / yyfix.1

.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.roff%
.\"
.\"     @(#)yyfix.1	5.4 (Berkeley) %G%
.\"
.Dd 
.Dt YYFIX 1
.Os BSD 4.4
.Sh NAME
.Nm yyfix
.Nd extract tables from y.tab.c
.Sh SYNOPSIS
.Nm yyfix
.Ar file
.Op Ar tables
.Sh DESCRIPTION
Programs have historically used a script (often named ``:yyfix'') to
extract tables from the
.Xr yacc 1
generated file
.Pa y.tab.c .
As the names of the tables generated by the current version of
.Xr yacc
are different from those of historical versions of
.Xr yacc ,
the shell script
.Nm yyfix
is provided to simplify the transition.
.Pp
The first (and required) argument to
.Nm yyfix
is the name of the file where the extracted tables should be stored.
.Pp
If further command line arguments are specified, they are taken as
the list of tables to be extracted.
Otherwise,
.Nm yyfix
attempts to determine if the
.Pa y.tab.c
file is from an old or new
.Xr yacc ,
and extracts the appropriate tables.
.Pp
The tables
.Dq yyexca ,
.Dq yyact ,
.Dq yypact ,
.Dq yypgo ,
.Dq yyr1 ,
.Dq yyr2 ,
.Dq yychk ,
and
.Dq yydef
are extracted
from historical versions of
.Xr yacc .
.Pp
The tables
.Dq yylhs ,
.Dq yylen ,
.Dq yydefred ,
.Dq yydgoto ,
.Dq yysindex ,
.Dq yyrindex ,
.Dq yygindex ,
.Dq yytable ,
.Dq yyname ,
.Dq yyrule ,
and
.Dq yycheck ,
are extracted from the current version of
.Xr yacc .
.Sh FILES
.Bl -tag -width y.tab.c
.It Pa y.tab.c
File from which tables are extracted.
.El
.Sh SEE ALSO
.Xr yacc 1
.Sh HISTORY
The
.Nm
command appears in
.Bx 4.4 .
Commit	Line	Data
b2a7c0f3	1	.\" Copyright (c) 1990, 1991 The Regents of the University of California.
7aca28b0 KB	2	.\" All rights reserved.
7aca28b0 KB	3	.\"
b2a7c0f3	4	.\" %sccs.include.redist.roff%
7aca28b0	5	.\"
3839a0e1	6	.\" @(#)yyfix.1 5.4 (Berkeley) %G%
7aca28b0	7	.\"
b2a7c0f3 CL	8	.Dd
b2a7c0f3 CL	9	.Dt YYFIX 1
3839a0e1	10	.Os BSD 4.4
b2a7c0f3 CL	11	.Sh NAME
	12	.Nm yyfix
	13	.Nd extract tables from y.tab.c
	14	.Sh SYNOPSIS
	15	.Nm yyfix
	16	.Ar file
	17	.Op Ar tables
	18	.Sh DESCRIPTION
7aca28b0 KB	19	Programs have historically used a script (often named ``:yyfix'') to
7aca28b0 KB	20	extract tables from the
b2a7c0f3 CL	21	.Xr yacc 1
	22	generated file
	23	.Pa y.tab.c .
7aca28b0	24	As the names of the tables generated by the current version of
b2a7c0f3	25	.Xr yacc
7aca28b0	26	are different from those of historical versions of
b2a7c0f3	27	.Xr yacc ,
7aca28b0	28	the shell script
b2a7c0f3	29	.Nm yyfix
7aca28b0	30	is provided to simplify the transition.
b2a7c0f3 CL	31	.Pp
	32	The first (and required) argument to
	33	.Nm yyfix
7aca28b0	34	is the name of the file where the extracted tables should be stored.
b2a7c0f3	35	.Pp
7aca28b0 KB	36	If further command line arguments are specified, they are taken as
	37	the list of tables to be extracted.
	38	Otherwise,
b2a7c0f3 CL	39	.Nm yyfix
	40	attempts to determine if the
	41	.Pa y.tab.c
	42	file is from an old or new
	43	.Xr yacc ,
7aca28b0	44	and extracts the appropriate tables.
b2a7c0f3 CL	45	.Pp
	46	The tables
	47	.Dq yyexca ,
	48	.Dq yyact ,
	49	.Dq yypact ,
	50	.Dq yypgo ,
	51	.Dq yyr1 ,
	52	.Dq yyr2 ,
	53	.Dq yychk ,
	54	and
	55	.Dq yydef
	56	are extracted
7aca28b0	57	from historical versions of
b2a7c0f3 CL	58	.Xr yacc .
	59	.Pp
	60	The tables
	61	.Dq yylhs ,
	62	.Dq yylen ,
	63	.Dq yydefred ,
	64	.Dq yydgoto ,
	65	.Dq yysindex ,
	66	.Dq yyrindex ,
	67	.Dq yygindex ,
	68	.Dq yytable ,
	69	.Dq yyname ,
	70	.Dq yyrule ,
	71	and
	72	.Dq yycheck ,
	73	are extracted from the current version of
	74	.Xr yacc .
	75	.Sh FILES
	76	.Bl -tag -width y.tab.c
	77	.It Pa y.tab.c
	78	File from which tables are extracted.
	79	.El
	80	.Sh SEE ALSO
	81	.Xr yacc 1
	82	.Sh HISTORY
	83	The
	84	.Nm
3839a0e1 CL	85	command appears in
3839a0e1 CL	86	.Bx 4.4 .