use YAPE::Regex;
my $p = YAPE::Regex->new(qr//);
$p->YAPE::Regex::Extensible::steal_pat;
package YAPE::Regex::Extensible;
use base 'YAPE::Regex';
use PadWalker 'peek_sub';
use Data::Dumper;
sub steal_pat {
my $self = shift;
$self->{'pat'} = peek_sub(\&YAPE::Regex::next)->{'%pat'};
}
####
use YAPE::Regex;
my $p = YAPE::Regex->new(qr//);
$p->YAPE::Regex::Extensible::steal_pat;
package YAPE::Regex::Extensible;
use base 'YAPE::Regex';
use Devel::LexAlias 'lexalias';
sub steal_pat {
my $self = shift;
$self->{'pat'} = {};
lexalias(\&YAPE::Regex::next, '%pat', $self->{'pat'});
}
##
##
use YAPE::Regex;
my $p = YAPE::Regex->new(qr//);
$p->YAPE::Regex::Extensible::steal_pat;
package YAPE::Regex::Extensible;
use base 'YAPE::Regex';
use B qw(svref_2object);
use Devel::Pointer;
sub steal_pat {
my $self = shift;
$self->{'pat'} = {};
my $sub = \&YAPE::Regex::next;
my $osub = svref_2object( $sub );
# Unpack next()'s pad list into an array of names and values.
my ($names, $values) = map [ $_->ARRAY ], $osub->PADLIST->ARRAY;
# Fetch the first HV associated with the name '%pat'
my $h;
for my $i (0 .. $#$names) {
if ( $names->[$i]->can('PV') and
$names->[$i]->PV eq '%pat') {
$h = $values->[$i];
last;
}
}
# $$h is the address of the hash
# Use Devel::Pointer to construct a reference to it.
$self->{'pat'} = unsmash_hv( $$h );
}