+ my %dumped;
+
+ my $clone_for_dump;
+ $clone_for_dump = sub {
+ my ($src) = @_;
+
+ return undef if !defined($src);
+
+ my $addr = refaddr($src);
+
+ return $dumped{$addr} if $dumped{$addr // ''};
+
+
+ if (blessed($src) && $src->can('as_debug_info')) {
+ $dumped{$addr} = $src->as_debug_info;
+
+ } elsif (ref($src) eq 'ARRAY') {
+ $dumped{$addr} = [];
+
+ foreach my $entry (@{ $src }) {
+ my $exists = !!$dumped{refaddr($entry) // ''};
+ push @{ $dumped{$addr} }, $clone_for_dump->($entry);
+
+ weaken($dumped{$addr}->[-1]) if $exists;
+
+ }
+
+ } elsif (ref($src) =~ m{^(?:HASH|Form|SL::.+)$}) {
+ $dumped{$addr} = {};
+
+ foreach my $key (keys %{ $src }) {
+ my $exists = !!$dumped{refaddr($src->{$key}) // ''};
+ $dumped{$addr}->{$key} = $clone_for_dump->($src->{$key});
+
+ weaken($dumped{$addr}->{$key}) if $exists;
+ }
+ }
+
+ return $dumped{$addr} // "$src";
+ };
+
+ $variable = $clone_for_dump->($variable);