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|
require 5;
package Pod::Simple::Methody;
use strict;
use Pod::Simple ();
use vars qw(@ISA $VERSION);
$VERSION = '2.02';
@ISA = ('Pod::Simple');
# Yes, we could use named variables, but I want this to be impose
# as little an additional performance hit as possible.
sub _handle_element_start {
$_[1] =~ tr/-:./__/;
( $_[0]->can( 'start_' . $_[1] )
|| return
)->(
$_[0], $_[2]
);
}
sub _handle_text {
( $_[0]->can( 'handle_text' )
|| return
)->(
@_
);
}
sub _handle_element_end {
$_[1] =~ tr/-:./__/;
( $_[0]->can( 'end_' . $_[1] )
|| return
)->(
$_[0]
);
}
1;
__END__
=head1 NAME
Pod::Simple::Methody -- turn Pod::Simple events into method calls
=head1 SYNOPSIS
require 5;
use strict;
package SomePodFormatter;
use base qw(Pod::Simple::Methody);
sub handle_text {
my($self, $text) = @_;
...
}
sub start_head1 {
my($self, $attrs) = @_;
...
}
sub end_head1 {
my($self) = @_;
...
}
...and start_/end_ methods for whatever other events you want to catch.
=head1 DESCRIPTION
This class is of
interest to people writing Pod formatters based on Pod::Simple.
This class (which is very small -- read the source) overrides
Pod::Simple's _handle_element_start, _handle_text, and
_handle_element_end methods so that parser events are turned into method
calls. (Otherwise, this is a subclass of L<Pod::Simple> and inherits all
its methods.)
You can use this class as the base class for a Pod formatter/processor.
=head1 METHOD CALLING
When Pod::Simple sees a "=head1 Hi there", for example, it basically does
this:
$parser->_handle_element_start( "head1", \%attributes );
$parser->_handle_text( "Hi there" );
$parser->_handle_element_end( "head1" );
But if you subclass Pod::Simple::Methody, it will instead do this
when it sees a "=head1 Hi there":
$parser->start_head1( \%attributes ) if $parser->can('start_head1');
$parser->handle_text( "Hi there" ) if $parser->can('handle_text');
$parser->end_head1() if $parser->can('end_head1');
If Pod::Simple sends an event where the element name has a dash,
period, or colon, the corresponding method name will have a underscore
in its place. For example, "foo.bar:baz" becomes start_foo_bar_baz
and end_foo_bar_baz.
See the source for Pod::Simple::Text for an example of using this class.
=head1 SEE ALSO
L<Pod::Simple>, L<Pod::Simple::Subclassing>
=head1 COPYRIGHT AND DISCLAIMERS
Copyright (c) 2002 Sean M. Burke. All rights reserved.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of
merchantability or fitness for a particular purpose.
=head1 AUTHOR
Sean M. Burke C<sburke@cpan.org>
=cut
|
