NAME¶
bison - GNU Project parser generator (yacc replacement)
SYNOPSIS¶
bison [
OPTION]...
FILE
DESCRIPTION¶
Bison is a parser generator in the style of
yacc(1). It should be
upwardly compatible with input files designed for
yacc.
Input files should follow the
yacc convention of ending in
.y.
Unlike
yacc, the generated files do not have fixed names, but instead
use the prefix of the input file. Moreover, if you need to put
C++ code
in the input file, you can end his name by a C++-like extension (.ypp or
.y++), then bison will follow your extension to name the output file (.cpp or
.c++). For instance, a grammar description file named
parse.yxx would
produce the generated parser in a file named
parse.tab.cxx, instead of
yacc's
y.tab.c or old
Bison version's
parse.tab.c.
This description of the options that can be given to
bison is adapted
from the node
Invocation in the
bison.texinfo manual, which
should be taken as authoritative.
Bison supports both traditional single-letter options and mnemonic long
option names. Long option names are indicated with
-- instead of
-. Abbreviations for option names are allowed as long as they are
unique. When a long option takes an argument, like
--file-prefix,
connect the option name and the argument with
=.
Generate a deterministic LR or generalized LR (GLR) parser employing LALR(1),
IELR(1), or canonical LR(1) parser tables. IELR(1) and canonical LR(1) support
is experimental.
Mandatory arguments to long options are mandatory for short options too. The
same is true for optional arguments.
Operation modes:¶
- -h, --help
- display this help and exit
- -V, --version
- output version information and exit
- --print-localedir
- output directory containing locale-dependent data
- --print-datadir
- output directory containing skeletons and XSLT
- -y, --yacc
- emulate POSIX Yacc
- -W, --warnings[=CATEGORY]
- report the warnings falling in CATEGORY
Parser:¶
- -L, --language=LANGUAGE
- specify the output programming language (this is an
experimental feature)
- -S, --skeleton=FILE
- specify the skeleton to use
- -t, --debug
- instrument the parser for debugging
- --locations
- enable location support
- -D, --define=NAME[=VALUE]
- similar to `%define NAME "VALUE"'
- -F, --force-define=NAME[=VALUE]
- override `%define NAME "VALUE"'
- -p, --name-prefix=PREFIX
- prepend PREFIX to the external symbols
- -l, --no-lines
- don't generate `#line' directives
- -k, --token-table
- include a table of token names
Output:¶
- --defines[=FILE]
- also produce a header file
- -d
- likewise but cannot specify FILE (for POSIX Yacc)
- -r, --report=THINGS
- also produce details on the automaton
- --report-file=FILE
- write report to FILE
- -v, --verbose
- same as `--report=state'
- -b, --file-prefix=PREFIX
- specify a PREFIX for output files
- -o, --output=FILE
- leave output to FILE
- -g, --graph[=FILE]
- also output a graph of the automaton
- -x, --xml[=FILE]
- also output an XML report of the automaton (the XML schema
is experimental)
Warning categories include:¶
- `midrule-values'
- unset or unused midrule values
- `yacc'
- incompatibilities with POSIX Yacc
- `conflicts-sr'
- S/R conflicts (enabled by default)
- `conflicts-rr'
- R/R conflicts (enabled by default)
- `other'
- all other warnings (enabled by default)
- `all'
- all the warnings
- `no-CATEGORY'
- turn off warnings in CATEGORY
- `none'
- turn off all the warnings
- `error'
- treat warnings as errors
THINGS is a list of comma separated words that can include:¶
- `state'
- describe the states
- `itemset'
- complete the core item sets with their closure
- `lookahead'
- explicitly associate lookahead tokens to items
- `solved'
- describe shift/reduce conflicts solving
- `all'
- include all the above information
- `none'
- disable the report
AUTHOR¶
Written by Robert Corbett and Richard Stallman.
REPORTING BUGS¶
Report bugs to <bug-bison@gnu.org>.
COPYRIGHT¶
Copyright © 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO¶
lex(1),
flex(1),
yacc(1).
The full documentation for
bison is maintained as a Texinfo manual. If
the
info and
bison programs are properly installed at your site,
the command
- info bison
should give you access to the complete manual.
