NAME

yapp - A perl frontend to the Parse::Yapp module

SYNOPSYS

yapp [-vns] [-o filename] [-m module] grammar[.yp]

yapp -V

yapp -h

DESCRIPTION

yapp is a frontend to the Parse::Yapp module, which lets you compile Parse::Yapp grammar input files into Perl LALR(1) OO parser modules.

OPTIONS

-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.

-m module

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

-o outfile

The compiled output file will be named outfile for your parser module. It defaults to grammar.pm or, if you specified the option -m A::Module::Name (see below), to Name.pm.

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.

BUGS

None known now :-)

COPYRIGHT

(c) Copyright 1998 Francois Desarmenien, all rights reserved. See Parse::Yapp(3) for legal use and distribution rights

SEE ALSO

Parse::Yapp(3) Perl(1) yacc(1) bison(1)