Options, as of today, are all optionals :-)
-v Creates a file grammar.output describing your parser. It will show you a summary of conflicts, rules,
the DFA (Deterministic Finite Automaton) states and overall usage of the parser.
-s Create a standalone module in which the driver is included. Note that if you have more than one
parser module called from a program, to have it standalone, you need this option only for one of your
parser module.
-n Disable source file line numbering embedded in your parser module. I don't know why one should need
it, but it's there.
-mmodule
Gives your parser module the package name (or name space or module name or class name or whatever-
you-call-it) of module. It defaults to grammar-ooutfile
The compiled output file will be named outfile for your parser module. It defaults to grammar.pm or,
if you specified the option -mA::Module::Name (see below), to Name.pm, in the current working
directory.
-tfilename
The -tfilename option allows you to specify a file which should be used as template for generating
the parser output. The default is to use the internal template defined in Parse::Yapp::Output.pm.
For how to write your own template and which substitutions are available, have a look to the module
Parse::Yapp::Output.pm : it should be obvious.
-bshebang
If you work on systems that understand so called shebangs, and your generated parser is directly an
executable script, you can specifie one with the -b option, ie:
yapp -b '/usr/local/bin/perl -w' -o myscript.pl myscript.yp
This will output a file called myscript.pl whose very first line is:
#!/usr/local/bin/perl -w
The argument is mandatory, but if you specify an empty string, the value of $Config{perlpath} will be
used instead.
grammar
The input grammar file. If no suffix is given, and the file does not exists, an attempt to open the
file with a suffix of .yp is tried before exiting.
-V Display current version of Parse::Yapp and gracefully exits.
-h Display the usage screen.