cf1a7c8a3a
In case you're wondering, the gcc-2.7.2.1 import uses this to generate code. The size of the generated code is bigger than the entire bison release, making this a saving. The bison doc is pretty good apparently.
343 lines
6.0 KiB
Groff
343 lines
6.0 KiB
Groff
.TH BISON 1 local
|
|
.SH NAME
|
|
bison \- GNU Project parser generator (yacc replacement)
|
|
.SH SYNOPSIS
|
|
.B bison
|
|
[
|
|
.BI \-b " file-prefix"
|
|
] [
|
|
.BI \-\-file-prefix= file-prefix
|
|
] [
|
|
.B \-d
|
|
] [
|
|
.B \-\-defines
|
|
] [
|
|
.B \-k
|
|
] [
|
|
.B \-\-token-table
|
|
] [
|
|
.B \-l
|
|
] [
|
|
.B \-\-no-lines
|
|
] [
|
|
.B \-n
|
|
] [
|
|
.B \-\-no-parser
|
|
] [
|
|
.BI \-o " outfile"
|
|
] [
|
|
.BI \-\-output-file= outfile
|
|
] [
|
|
.BI \-p " prefix"
|
|
] [
|
|
.BI \-\-name-prefix= prefix
|
|
] [
|
|
.B \-r
|
|
] [
|
|
.B \-\-raw
|
|
] [
|
|
.B \-t
|
|
] [
|
|
.B \-\-debug
|
|
] [
|
|
.B \-v
|
|
] [
|
|
.B \-\-verbose
|
|
] [
|
|
.B \-V
|
|
] [
|
|
.B \-\-version
|
|
] [
|
|
.B \-y
|
|
] [
|
|
.B \-\-yacc
|
|
] [
|
|
.B \-h
|
|
] [
|
|
.B \-\-help
|
|
] [
|
|
.B \-\-fixed-output-files
|
|
]
|
|
file
|
|
.SH DESCRIPTION
|
|
.I Bison
|
|
is a parser generator in the style of
|
|
.IR yacc (1).
|
|
It should be upwardly compatible with input files designed
|
|
for
|
|
.IR yacc .
|
|
.PP
|
|
Input files should follow the
|
|
.I yacc
|
|
convention of ending in
|
|
.BR .y .
|
|
Unlike
|
|
.IR yacc ,
|
|
the generated files do not have fixed names, but instead use the prefix
|
|
of the input file.
|
|
For instance, a grammar description file named
|
|
.B parse.y
|
|
would produce the generated parser in a file named
|
|
.BR parse.tab.c ,
|
|
instead of
|
|
.IR yacc 's
|
|
.BR y.tab.c .
|
|
.PP
|
|
This description of the options that can be given to
|
|
.I bison
|
|
is adapted from the node
|
|
.B Invocation
|
|
in the
|
|
.B bison.texinfo
|
|
manual, which should be taken as authoritative.
|
|
.PP
|
|
.I Bison
|
|
supports both traditional single-letter options and mnemonic long
|
|
option names. Long option names are indicated with
|
|
.B \-\-
|
|
instead of
|
|
.BR \- .
|
|
Abbreviations for option names are allowed as long as they
|
|
are unique. When a long option takes an argument, like
|
|
.BR \-\-file-prefix ,
|
|
connect the option name and the argument with
|
|
.BR = .
|
|
.SS OPTIONS
|
|
.TP
|
|
.BI \-b " file-prefix"
|
|
.br
|
|
.ns
|
|
.TP
|
|
.BI \-\-file-prefix= file-prefix
|
|
Specify a prefix to use for all
|
|
.I bison
|
|
output file names. The names are
|
|
chosen as if the input file were named
|
|
\fIfile-prefix\fB.c\fR.
|
|
.TP
|
|
.B \-d
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-defines
|
|
Write an extra output file containing macro definitions for the token
|
|
type names defined in the grammar and the semantic value type
|
|
.BR YYSTYPE ,
|
|
as well as a few
|
|
.B extern
|
|
variable declarations.
|
|
.sp
|
|
If the parser output file is named
|
|
\fIname\fB.c\fR
|
|
then this file
|
|
is named
|
|
\fIname\fB.h\fR.
|
|
.sp
|
|
This output file is essential if you wish to put the definition of
|
|
.B yylex
|
|
in a separate source file, because
|
|
.B yylex
|
|
needs to be able to refer to token type codes and the variable
|
|
.BR yylval .
|
|
.TP
|
|
.B \-r
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-raw
|
|
The token numbers in the \fIname\fB.h\fR file are usually the Yacc compatible
|
|
translations. If this switch is specified, Bison token numbers
|
|
are output instead. (Yacc numbers start at 257 except for single character
|
|
tokens; Bison assigns token numbers sequentially for all tokens
|
|
starting at 3.)
|
|
.TP
|
|
.B \-k
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-token-table
|
|
This switch causes the \fIname\fB.tab.c\fR output to include a list of
|
|
token names in order by their token numbers; this is defined in the array
|
|
.IR yytname .
|
|
Also generated
|
|
are #defines for
|
|
.IR YYNTOKENS ,
|
|
.IR YYNNTS ,
|
|
.IR YYNRULES ,
|
|
and
|
|
.IR YYNSTATES .
|
|
.TP
|
|
.B \-l
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-no-lines
|
|
Don't put any
|
|
.B #line
|
|
preprocessor commands in the parser file.
|
|
Ordinarily
|
|
.I bison
|
|
puts them in the parser file so that the C compiler
|
|
and debuggers will associate errors with your source file, the
|
|
grammar file. This option causes them to associate errors with the
|
|
parser file, treating it an independent source file in its own right.
|
|
.TP
|
|
.B \-n
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-no-parser
|
|
Do not generate the parser code into the output; generate only
|
|
declarations. The generated \fIname\fB.tab.c\fR file will have only
|
|
constant declarations. In addition, a \fIname\fB.act\fR file is
|
|
generated containing a switch statement body containing all the
|
|
translated actions.
|
|
.TP
|
|
.BI \-o " outfile"
|
|
.br
|
|
.ns
|
|
.TP
|
|
.BI \-\-output-file= outfile
|
|
Specify the name
|
|
.I outfile
|
|
for the parser file.
|
|
.sp
|
|
The other output files' names are constructed from
|
|
.I outfile
|
|
as described under the
|
|
.B \-v
|
|
and
|
|
.B \-d
|
|
switches.
|
|
.TP
|
|
.BI \-p " prefix"
|
|
.br
|
|
.ns
|
|
.TP
|
|
.BI \-\-name-prefix= prefix
|
|
Rename the external symbols used in the parser so that they start with
|
|
.I prefix
|
|
instead of
|
|
.BR yy .
|
|
The precise list of symbols renamed is
|
|
.BR yyparse ,
|
|
.BR yylex ,
|
|
.BR yyerror ,
|
|
.BR yylval ,
|
|
.BR yychar ,
|
|
and
|
|
.BR yydebug .
|
|
.sp
|
|
For example, if you use
|
|
.BR "\-p c" ,
|
|
the names become
|
|
.BR cparse ,
|
|
.BR clex ,
|
|
and so on.
|
|
.TP
|
|
.B \-t
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-debug
|
|
Output a definition of the macro
|
|
.B YYDEBUG
|
|
into the parser file,
|
|
so that the debugging facilities are compiled.
|
|
.TP
|
|
.B \-v
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-verbose
|
|
Write an extra output file containing verbose descriptions of the
|
|
parser states and what is done for each type of look-ahead token in
|
|
that state.
|
|
.sp
|
|
This file also describes all the conflicts, both those resolved by
|
|
operator precedence and the unresolved ones.
|
|
.sp
|
|
The file's name is made by removing
|
|
.B .tab.c
|
|
or
|
|
.B .c
|
|
from the parser output file name, and adding
|
|
.B .output
|
|
instead.
|
|
.sp
|
|
Therefore, if the input file is
|
|
.BR foo.y ,
|
|
then the parser file is called
|
|
.B foo.tab.c
|
|
by default. As a consequence, the verbose
|
|
output file is called
|
|
.BR foo.output .
|
|
.TP
|
|
.B \-V
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-version
|
|
Print the version number of
|
|
.I bison
|
|
and exit.
|
|
.TP
|
|
.B \-h
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-help
|
|
Print a summary of the options to
|
|
.I bison
|
|
and exit.
|
|
.TP
|
|
.B \-y
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-yacc
|
|
.br
|
|
.ns
|
|
.TP
|
|
.B \-\-fixed-output-files
|
|
Equivalent to
|
|
.BR "\-o y.tab.c" ;
|
|
the parser output file is called
|
|
.BR y.tab.c ,
|
|
and the other outputs are called
|
|
.B y.output
|
|
and
|
|
.BR y.tab.h .
|
|
The purpose of this switch is to imitate
|
|
.IR yacc 's
|
|
output file name conventions.
|
|
Thus, the following shell script can substitute for
|
|
.IR yacc :
|
|
.sp
|
|
.RS
|
|
.ft B
|
|
bison \-y $*
|
|
.ft R
|
|
.sp
|
|
.RE
|
|
.PP
|
|
The long-named options can be introduced with `+' as well as `\-\-',
|
|
for compatibility with previous releases. Eventually support for `+'
|
|
will be removed, because it is incompatible with the POSIX.2 standard.
|
|
.SH FILES
|
|
/usr/local/lib/bison.simple simple parser
|
|
.br
|
|
/usr/local/lib/bison.hairy complicated parser
|
|
.SH SEE ALSO
|
|
.IR yacc (1)
|
|
.br
|
|
The
|
|
.IR "Bison Reference Manual" ,
|
|
included as the file
|
|
.B bison.texinfo
|
|
in the
|
|
.I bison
|
|
source distribution.
|
|
.SH DIAGNOSTICS
|
|
Self explanatory.
|