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|
require 5;
package Pod::Simple::LinkSection;
# Based somewhat dimly on Array::Autojoin
use strict;
use Pod::Simple::BlackBox;
use overload( # So it'll stringify nice
'""' => \&Pod::Simple::BlackBox::stringify_lol,
'bool' => \&Pod::Simple::BlackBox::stringify_lol,
# '.=' => \&tack_on, # grudgingly support
'fallback' => 1, # turn on cleverness
);
sub tack_on {
$_[0] = ['', {}, "$_[0]" ];
return $_[0][2] .= $_[1];
}
sub as_string {
goto &Pod::Simple::BlackBox::stringify_lol;
}
sub stringify {
goto &Pod::Simple::BlackBox::stringify_lol;
}
sub new {
my $class = shift;
$class = ref($class) || $class;
my $new;
if(@_ == 1) {
if (!ref($_[0] || '')) { # most common case: one bare string
return bless ['', {}, $_[0] ], $class;
} elsif( ref($_[0] || '') eq 'ARRAY') {
$new = [ @{ $_[0] } ];
} else {
Carp::croak( "$class new() doesn't know to clone $new" );
}
} else { # misc stuff
$new = [ '', {}, @_ ];
}
# By now it's a treelet: [ 'foo', {}, ... ]
foreach my $x (@$new) {
if(ref($x || '') eq 'ARRAY') {
$x = $class->new($x); # recurse
} elsif(ref($x || '') eq 'HASH') {
$x = { %$x };
}
# otherwise leave it.
}
return bless $new, $class;
}
# Not much in this class is likely to be link-section specific --
# but it just so happens that link-sections are about the only treelets
# that are exposed to the user.
1;
__END__
# TODO: let it be an option whether a given subclass even wants little treelets?
__END__
=head1 NAME
Pod::Simple::LinkSection -- represent "section" attributes of L codes
=head1 SYNOPSIS
# a long story
=head1 DESCRIPTION
This class is not of interest to general users.
Pod::Simple uses this class for representing the value of the
"section" attribute of "L" start-element events. Most applications
can just use the normal stringification of objects of this class;
they stringify to just the text content of the section,
such as "foo" for
C<< LZ<><Stuff/foo> >>, and "bar" for
C<< LZ<><Stuff/bIZ<><ar>> >>.
However, anyone particularly interested in getting the full value of
the treelet, can just traverse the content of the treeleet
@$treelet_object. To wit:
% perl -MData::Dumper -e
"use base qw(Pod::Simple::Methody);
sub start_L { print Dumper($_[1]{'section'} ) }
__PACKAGE__->new->parse_string_document('=head1 L<Foo/bI<ar>baz>>')
"
Output:
$VAR1 = bless( [
'',
{},
'b',
bless( [
'I',
{},
'ar'
], 'Pod::Simple::LinkSection' ),
'baz'
], 'Pod::Simple::LinkSection' );
But stringify it and you get just the text content:
% perl -MData::Dumper -e
"use base qw(Pod::Simple::Methody);
sub start_L { print Dumper( '' . $_[1]{'section'} ) }
__PACKAGE__->new->parse_string_document('=head1 L<Foo/bI<ar>baz>>')
"
Output:
$VAR1 = 'barbaz';
=head1 SEE ALSO
L<Pod::Simple>
=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
|
