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.IX Title "DateTime::Format::Builder::Parser::Dispatch 3"
.TH DateTime::Format::Builder::Parser::Dispatch 3 2025-07-13 "perl v5.42.0" "User Contributed Perl Documentation"
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.SH NAME
DateTime::Format::Builder::Parser::Dispatch \- Dispatch parsers by group
.SH VERSION
.IX Header "VERSION"
version 0.83
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 10
\&    package SampleDispatch;
\&    use DateTime::Format::Builder (
\&        parsers => {
\&            parse_datetime => [
\&                {
\&                    Dispatch => sub {
\&                        return \*(Aqfnerk\*(Aq;
\&                    }
\&                }
\&            ]
\&        },
\&        groups => {
\&            fnerk => [
\&                {
\&                    regex  => qr/^(\ed{4})(\ed\ed)(\ed\ed)$/,
\&                    params => [qw( year month day )],
\&                },
\&            ]
\&        }
\&    );
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
\&\f(CW\*(C`Dispatch\*(C'\fR adds another parser type to \f(CW\*(C`Builder\*(C'\fR permitting dispatch of
parsing according to group names.
.SH SPECIFICATION
.IX Header "SPECIFICATION"
\&\f(CW\*(C`Dispatch\*(C'\fR has just one key: \f(CW\*(C`Dispatch\*(C'\fR. The value should be a reference to
a subroutine that returns one of:
.IP \(bu 4
\&\f(CW\*(C`undef\*(C'\fR, meaning no groups could be found.
.IP \(bu 4
An empty list, meaning no groups could be found.
.IP \(bu 4
A single string, meaning: use this group
.IP \(bu 4
A list of strings, meaning: use these groups in this order.
.PP
Groups are specified much like the example in the SYNOPSIS. They follow the
same format as when you specify them for methods.
.SH "SIDE EFFECTS"
.IX Header "SIDE EFFECTS"
Your group parser can also be a Dispatch parser. Thus you could potentially
end up with an infinitely recursive parser.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\f(CW\*(C`datetime@perl.org\*(C'\fR mailing list.
.PP
http://datetime.perl.org/
.PP
perl, DateTime,
DateTime::Format::Builder
.SH SUPPORT
.IX Header "SUPPORT"
Bugs may be submitted at <https://github.com/houseabsolute/DateTime\-Format\-Builder/issues>.
.PP
I am also usually active on IRC as \*(Aqautarch\*(Aq on \f(CW\*(C`irc://irc.perl.org\*(C'\fR.
.SH SOURCE
.IX Header "SOURCE"
The source code repository for DateTime\-Format\-Builder can be found at <https://github.com/houseabsolute/DateTime\-Format\-Builder>.
.SH AUTHORS
.IX Header "AUTHORS"
.IP \(bu 4
Dave Rolsky <autarch@urth.org>
.IP \(bu 4
Iain Truskett <spoon@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is Copyright (c) 2020 by Dave Rolsky.
.PP
This is free software, licensed under:
.PP
.Vb 1
\&  The Artistic License 2.0 (GPL Compatible)
.Ve
.PP
The full text of the license can be found in the
\&\fILICENSE\fR file included with this distribution.