119 lines
2.8 KiB
Groff
119 lines
2.8 KiB
Groff
|
||
|
||
YACC(1) Minix Programmer's Manual YACC(1)
|
||
|
||
|
||
NAME
|
||
yacc - an LALR(1) parser generator
|
||
|
||
SYNOPSIS
|
||
yacc [ -dlrtv ] [ -b file_prefix ] [ -p symbol_prefix ] filename
|
||
|
||
DESCRIPTION
|
||
Yacc reads the grammar specification in the file 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. Yacc
|
||
normally writes the parse tables and the driver routine to the file
|
||
y.tab.c.
|
||
|
||
The following options are available:
|
||
|
||
-b file_prefix
|
||
The -b option changes the prefix prepended to the output file names
|
||
to the string denoted by file_prefix. The default prefix is the
|
||
character y.
|
||
|
||
-d The -d option causes the header file y.tab.h to be written.
|
||
|
||
-l If the -l option is not specified, yacc 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 -l option is specified, yacc will not insert the #line
|
||
directives. #line directives specified by the user will be
|
||
retained.
|
||
|
||
-p symbol_prefix
|
||
The -p option changes the prefix prepended to yacc-generated symbols
|
||
to the string denoted by symbol_prefix. The default prefix is the
|
||
string yy.
|
||
|
||
-r The -r option causes yacc to produce separate files for code and
|
||
tables. The code file is named y.code.c, and the tables file is
|
||
named y.tab.c.
|
||
|
||
-t The -t option changes the preprocessor directives generated by yacc
|
||
so that debugging statements will be incorporated in the compiled
|
||
code.
|
||
|
||
-v The -v option causes a human-readable description of the generated
|
||
parser to be written to the file y.output.
|
||
|
||
If the environment variable TMPDIR is set, the string denoted by TMPDIR
|
||
will be used as the name of the directory where the temporary files are
|
||
created.
|
||
|
||
|
||
|
||
|
||
6BSD July 15, 1990 1
|
||
|
||
|
||
|
||
YACC(1) Minix Programmer's Manual YACC(1)
|
||
|
||
|
||
FILES
|
||
y.code.c
|
||
y.tab.c
|
||
y.tab.h
|
||
y.output
|
||
/tmp/yacc.aXXXXXX
|
||
/tmp/yacc.tXXXXXX
|
||
/tmp/yacc.uXXXXXX
|
||
|
||
DIAGNOSTICS
|
||
If there are rules that are never reduced, the number of such rules is
|
||
reported on standard error. If there are any LALR(1) conflicts, the
|
||
number of conflicts is reported on standard error.
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
6BSD July 15, 1990 2
|
||
|