diff options
Diffstat (limited to 'usr.bin/yacc/yacc.1')
| -rw-r--r-- | usr.bin/yacc/yacc.1 | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/usr.bin/yacc/yacc.1 b/usr.bin/yacc/yacc.1 index 31977fdfdb7..262ebb7114e 100644 --- a/usr.bin/yacc/yacc.1 +++ b/usr.bin/yacc/yacc.1 @@ -1,4 +1,5 @@ -.\" $OpenBSD: yacc.1,v 1.9 2000/03/05 00:28:56 aaron Exp $ +.\" $OpenBSD: yacc.1,v 1.10 2000/03/14 14:58:27 aaron Exp $ +.\" .\" Copyright (c) 1989, 1990 The Regents of the University of California. .\" All rights reserved. .\" @@ -51,7 +52,7 @@ parser generator .Op Fl p Ar symbol_prefix .Ar filename .Sh DESCRIPTION -.Nm yacc +.Nm reads the grammar specification in the file .Ar filename and generates an @@ -61,7 +62,7 @@ The parsers consist of a set of .Tn LALR(1) parsing tables and a driver routine written in the C programming language. -.Nm yacc +.Nm normally writes the parse tables and the driver routine to the file .Pa y.tab.c . .Pp @@ -85,14 +86,14 @@ to be written. If the .Fl l option is not specified, -.Nm yacc +.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 yacc +.Nm will not insert the #line directives. #line directives specified by the user will be retained. .It Fl o Ar output_file @@ -118,7 +119,7 @@ The default prefix is the string The .Fl r option causes -.Nm yacc +.Nm to produce separate files for code and tables. The code file is named .Pa y.code.c , @@ -128,7 +129,7 @@ and the tables file is named The .Fl t option changes the preprocessor directives generated by -.Nm yacc +.Nm so that debugging statements will be incorporated in the compiled code. .It Fl v The @@ -137,20 +138,15 @@ option causes a human-readable description of the generated parser to be written to the file .Pa y.output . .Sh ENVIRONMENT -The following environment variable is referenced by +The following environment variables affect the execution of .Nm yacc : .Bl -tag -width TMPDIR .It Ev TMPDIR -If the environment variable -.Ev TMPDIR -is set, the string denoted by -.Ev TMPDIR -will be used as the name of the directory where the temporary -files are created. +Name of directory where temporary files are to be created. .El .Sh TABLES The names of the tables generated by this version of -.Nm yacc +.Nm are .Dq yylhs , .Dq yylen , @@ -169,6 +165,13 @@ and are created if .Dv YYDEBUG is defined and non-zero. +.Sh DIAGNOSTICS +If there are rules that are never reduced, the number of such rules is +written to the standard error. +If there are any +.Tn LALR(1) +conflicts, the number of conflicts is also written +to the standard error. .Sh FILES .Bl -tag -width /tmp/yacc.uXXXXXXXXXX -compact .It Pa y.code.c @@ -179,17 +182,10 @@ is defined and non-zero. .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 -written to the standard error. -If there are any -.Tn LALR(1) -conflicts, the number of conflicts is also written -to the standard error. .Sh SEE ALSO .Xr yyfix 1 .Sh STANDARDS The -.Nm yacc +.Nm utility conforms to .St -p1003.2 . |