NAME

       DateTime::Format::Builder::Parser::generic - Useful routines

VERSION

       version 0.81

METHODS

   Useful
       new

       Standard constructor. Returns a blessed hash; any arguments are placed in the hash. This is useful for
       storing information between methods.

       generic_parser

       This is a method provided solely for the benefit of "Parser" implementations. It semi-neatly abstracts a
       lot of the work involved.

       Basically, it takes parameters matching the assorted callbacks from the parser declarations and makes a
       coderef out of it all.

       Currently recognized callbacks are:

       •   on_match

       •   on_fail

       •   preprocess

       •   postprocess

   Methods for subclassing
       These are methods you should define when writing your own subclass.

       Note: these methods do not exist in this class. There is no point trying to call "$self->SUPER::do_match(
       ... )".

       do_match

       "do_match" is the first phase. Arguments are the date and @args.  "self", "label", "args". Return value
       must be defined if you match successfully.

       post_match

       "post_match" is called after the appropriate callback out of "on_match"/"on_fail" is done. It's passed
       the date, the return value from "do_match" and the parsing hash.

       Its return value is used as the "post" argument to the "postprocess" callback, and as the second argument
       to "make".

       make

       "make" takes the original input, the return value from "post_match" and the parsing hash and should
       return a "DateTime" object or undefined.

   Delegations
       For use of "Parser", this module also delegates "valid_params" and "params". This is just convenience to
       save typing the following:

           DateTime::Format::Builder::Parser->valid_params( blah )

       Instead we get to type:

           $self->valid_params( blah );
           __PACKAGE__->valid_params( blah );

WRITING A SUBCLASS

       Rather than attempt to explain how it all works, I think it's best if you take a look at Regex.pm and
       Strptime.pm as examples and work from there.

SUPPORT

       See DateTime::Format::Builder for details.

SEE ALSO

       "datetime@perl.org" mailing list.

       http://datetime.perl.org/

       perl, DateTime, DateTime::Format::Builder, DateTime::Format::Builder::Parser.

AUTHORS

       •   Dave Rolsky <autarch@urth.org>

       •   Iain Truskett

COPYRIGHT AND LICENSE

       This software is Copyright (c) 2013 by Dave Rolsky.

       This is free software, licensed under:

         The Artistic License 2.0 (GPL Compatible)