BISON(1)                                                  User Commands                                                 BISON(1)



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  man-
       ual, 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 LALR(1) and GLR parsers.

       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 locations computation

       -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

       `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-bisonATgnu.org>.

COPYRIGHT
       Copyright (C) 2010 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FIT-
       NESS 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.



bison 2.4.3                                                August 2010                                                  BISON(1)