1BISON(1) User Commands BISON(1)
2
6 bison - GNU Project parser generator (yacc replacement)
7
9 bison [OPTION]... FILE
10
12 Bison is a parser generator in the style of yacc(1). It should be
13 upwardly compatible with input files designed for yacc.
14 Input files should follow the yacc convention of ending in .y. Unlike
16 yacc, the generated files do not have fixed names, but instead use the
17 prefix of the input file. Moreover, if you need to put C++ code in the
18 input file, you can end his name by a C++-like extension (.ypp or
19 .y++), then bison will follow your extension to name the output file
20 (.cpp or .c++). For instance, a grammar description file named
21 parse.yxx would produce the generated parser in a file named
22 parse.tab.cxx, instead of yacc's y.tab.c or old Bison version's
23 parse.tab.c.
24 This description of the options that can be given to bison is adapted
26 from the node Invocation in the bison.texi manual, which should be
27 taken as authoritative.
28 Bison supports both traditional single-letter options and mnemonic long
30 option names. Long option names are indicated with -- instead of -.
31 Abbreviations for option names are allowed as long as they are unique.
32 When a long option takes an argument, like --file-prefix, connect the
33 option name and the argument with =.
34 Generate a deterministic LR or generalized LR (GLR) parser employing
36 LALR(1), IELR(1), or canonical LR(1) parser tables.
37 Mandatory arguments to long options are mandatory for short options
39 too. The same is true for optional arguments.
40 Operation Modes:
42 -h, --help
43 display this help and exit
44 -V, --version
46 output version information and exit
47 --print-localedir
49 output directory containing locale-dependent data and exit
50 --print-datadir
52 output directory containing skeletons and XSLT and exit
53 -u, --update
55 apply fixes to the source grammar file and exit
56 -f, --feature[=FEATURES]
58 activate miscellaneous features
59 FEATURES is a list of comma separated words that can include:
61 caret, diagnostics-show-caret
62 show errors with carets
63 fixit, diagnostics-parseable-fixits
65 show machine-readable fixes
66 syntax-only
68 do not generate any file
69 all all of the above
71 none disable all of the above
73 Diagnostics:
75 -W, --warnings[=CATEGORY]
76 report the warnings falling in CATEGORY
77 --color[=WHEN]
79 whether to colorize the diagnostics
80 --style=FILE
82 specify the CSS FILE for colorizer diagnostics
83 Warning categories include:
85 conflicts-sr
86 S/R conflicts (enabled by default)
87 conflicts-rr
89 R/R conflicts (enabled by default)
90 dangling-alias
92 string aliases not attached to a symbol
93 deprecated
95 obsolete constructs
96 empty-rule
98 empty rules without %empty
99 midrule-values
101 unset or unused midrule values
102 precedence
104 useless precedence and associativity
105 yacc incompatibilities with POSIX Yacc
107 other all other warnings (enabled by default)
109 all all the warnings except 'dangling-alias' and 'yacc'
111 no-CATEGORY
113 turn off warnings in CATEGORY
114 none turn off all the warnings
116 error[=CATEGORY]
118 treat warnings as errors
119 WHEN can be one of the following:
121 always, yes
122 colorize the output
123 never, no
125 don't colorize the output
126 auto, tty
128 colorize if the output device is a tty
129 Tuning the Parser:
131 -L, --language=LANGUAGE
132 specify the output programming language
133 -S, --skeleton=FILE
135 specify the skeleton to use
136 -t, --debug
138 instrument the parser for tracing same as '-Dparse.trace'
139 --locations
141 enable location support
142 -D, --define=NAME[=VALUE]
144 similar to '%define NAME VALUE'
145 -F, --force-define=NAME[=VALUE]
147 override '%define NAME VALUE'
148 -p, --name-prefix=PREFIX
150 prepend PREFIX to the external symbols deprecated by '-Dapi.pre‐
151 fix={PREFIX}'
152 -l, --no-lines
154 don't generate '#line' directives
155 -k, --token-table
157 include a table of token names
158 -y, --yacc
160 emulate POSIX Yacc
161 Output Files:
163 --defines[=FILE]
164 also produce a header file
165 -d likewise but cannot specify FILE (for POSIX Yacc)
167 -r, --report=THINGS
169 also produce details on the automaton
170 --report-file=FILE
172 write report to FILE
173 -v, --verbose
175 same as '--report=state'
176 -b, --file-prefix=PREFIX
178 specify a PREFIX for output files
179 -o, --output=FILE
181 leave output to FILE
182 -g, --graph[=FILE]
184 also output a graph of the automaton
185 -x, --xml[=FILE]
187 also output an XML report of the automaton
188 THINGS is a list of comma separated words that can include:
190 states describe the states
191 itemsets
193 complete the core item sets with their closure
194 lookaheads
196 explicitly associate lookahead tokens to items
197 solved describe shift/reduce conflicts solving
199 all include all the above information
201 none disable the report
203
205 Written by Robert Corbett and Richard Stallman.
206
208 Report bugs to <bug-bison@gnu.org>.
209 GNU Bison home page: <https://www.gnu.org/software/bison/>.
210 General help using GNU software: <http://www.gnu.org/gethelp/>.
211 For complete documentation, run: info bison.
212
214 Copyright © 2020 Free Software Foundation, Inc.
215 This is free software; see the source for copying conditions. There is
216 NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
217 PURPOSE.
218
220 lex(1), flex(1), yacc(1).
221 The full documentation for bison is maintained as a Texinfo manual. If
223 the info and bison programs are properly installed at your site, the
224 command
225 info bison
227 should give you access to the complete manual.
229GNU Bison 3.6.4 June 2020 BISON(1)