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.\" ========================================================================
.\"
.IX Title "DateTime::Format::Builder::Parser::Dispatch 3"
.TH DateTime::Format::Builder::Parser::Dispatch 3 "2020-08-09" "perl v5.26.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.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 \s-1SYNOPSIS\s0. 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 \s-1IRC\s0 as 'autarch' 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
\&\fI\s-1LICENSE\s0\fR file included with this distribution.