105436638acc7c010349a69c3395f1a57c642dc62Ying Wang[name] 205436638acc7c010349a69c3395f1a57c642dc62Ying Wangbison \- GNU Project parser generator (yacc replacement) 305436638acc7c010349a69c3395f1a57c642dc62Ying Wang 405436638acc7c010349a69c3395f1a57c642dc62Ying Wang[description] 505436638acc7c010349a69c3395f1a57c642dc62Ying Wang.I Bison 605436638acc7c010349a69c3395f1a57c642dc62Ying Wangis a parser generator in the style of 705436638acc7c010349a69c3395f1a57c642dc62Ying Wang.IR yacc (1). 805436638acc7c010349a69c3395f1a57c642dc62Ying WangIt should be upwardly compatible with input files designed 905436638acc7c010349a69c3395f1a57c642dc62Ying Wangfor 1005436638acc7c010349a69c3395f1a57c642dc62Ying Wang.IR yacc . 1105436638acc7c010349a69c3395f1a57c642dc62Ying Wang.PP 1205436638acc7c010349a69c3395f1a57c642dc62Ying WangInput files should follow the 1305436638acc7c010349a69c3395f1a57c642dc62Ying Wang.I yacc 1405436638acc7c010349a69c3395f1a57c642dc62Ying Wangconvention of ending in 1505436638acc7c010349a69c3395f1a57c642dc62Ying Wang.BR .y . 1605436638acc7c010349a69c3395f1a57c642dc62Ying WangUnlike 1705436638acc7c010349a69c3395f1a57c642dc62Ying Wang.IR yacc , 1805436638acc7c010349a69c3395f1a57c642dc62Ying Wangthe generated files do not have fixed names, but instead use the prefix 1905436638acc7c010349a69c3395f1a57c642dc62Ying Wangof the input file. 2005436638acc7c010349a69c3395f1a57c642dc62Ying WangMoreover, if you need to put 2105436638acc7c010349a69c3395f1a57c642dc62Ying Wang.I C++ 2205436638acc7c010349a69c3395f1a57c642dc62Ying Wangcode in the input file, you can end his name by a C++-like extension 2305436638acc7c010349a69c3395f1a57c642dc62Ying Wang(.ypp or .y++), then bison will follow your extension to name the 2405436638acc7c010349a69c3395f1a57c642dc62Ying Wangoutput file (.cpp or .c++). 2505436638acc7c010349a69c3395f1a57c642dc62Ying WangFor instance, a grammar description file named 2605436638acc7c010349a69c3395f1a57c642dc62Ying Wang.B parse.yxx 2705436638acc7c010349a69c3395f1a57c642dc62Ying Wangwould produce the generated parser in a file named 2805436638acc7c010349a69c3395f1a57c642dc62Ying Wang.BR parse.tab.cxx , 2905436638acc7c010349a69c3395f1a57c642dc62Ying Wanginstead of 3005436638acc7c010349a69c3395f1a57c642dc62Ying Wang.IR yacc 's 3105436638acc7c010349a69c3395f1a57c642dc62Ying Wang.B y.tab.c 3205436638acc7c010349a69c3395f1a57c642dc62Ying Wangor old 3305436638acc7c010349a69c3395f1a57c642dc62Ying Wang.I Bison 3405436638acc7c010349a69c3395f1a57c642dc62Ying Wangversion's 3505436638acc7c010349a69c3395f1a57c642dc62Ying Wang.BR parse.tab.c . 3605436638acc7c010349a69c3395f1a57c642dc62Ying Wang.PP 3705436638acc7c010349a69c3395f1a57c642dc62Ying WangThis description of the options that can be given to 3805436638acc7c010349a69c3395f1a57c642dc62Ying Wang.I bison 3905436638acc7c010349a69c3395f1a57c642dc62Ying Wangis adapted from the node 4005436638acc7c010349a69c3395f1a57c642dc62Ying Wang.B Invocation 4105436638acc7c010349a69c3395f1a57c642dc62Ying Wangin the 4205436638acc7c010349a69c3395f1a57c642dc62Ying Wang.B bison.texinfo 4305436638acc7c010349a69c3395f1a57c642dc62Ying Wangmanual, which should be taken as authoritative. 4405436638acc7c010349a69c3395f1a57c642dc62Ying Wang.PP 4505436638acc7c010349a69c3395f1a57c642dc62Ying Wang.I Bison 4605436638acc7c010349a69c3395f1a57c642dc62Ying Wangsupports both traditional single-letter options and mnemonic long 4705436638acc7c010349a69c3395f1a57c642dc62Ying Wangoption names. Long option names are indicated with 4805436638acc7c010349a69c3395f1a57c642dc62Ying Wang.B \-\- 4905436638acc7c010349a69c3395f1a57c642dc62Ying Wanginstead of 5005436638acc7c010349a69c3395f1a57c642dc62Ying Wang.BR \- . 5105436638acc7c010349a69c3395f1a57c642dc62Ying WangAbbreviations for option names are allowed as long as they 5205436638acc7c010349a69c3395f1a57c642dc62Ying Wangare unique. When a long option takes an argument, like 5305436638acc7c010349a69c3395f1a57c642dc62Ying Wang.BR \-\-file-prefix , 5405436638acc7c010349a69c3395f1a57c642dc62Ying Wangconnect the option name and the argument with 5505436638acc7c010349a69c3395f1a57c642dc62Ying Wang.BR = . 56