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Clone.pm
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Clone.pm
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package Perlito5::Clone;
sub clone {
_clone( $_[0] );
}
sub _clone {
my ($obj) = @_;
return undef if !defined $obj;
my $ref = ref($obj);
if ( !$ref ) {
return $obj;
}
if ( $ref eq 'ARRAY' ) {
my @out;
for my $i ( 0 .. $#$obj ) {
push @out, _clone( $obj->[$i] );
}
return \@out;
}
elsif ( $ref eq 'HASH' ) {
my @out;
for my $i ( keys %$obj ) {
push @out, $i, _clone( $obj->{$i} );
}
return {@out};
}
elsif ( $ref eq 'SCALAR' || $ref eq 'REF' ) {
return \( _clone($$obj) );
}
elsif ( $ref eq 'CODE' ) {
return $ref;
}
elsif ( $ref eq 'GLOB' ) {
return $ref;
}
my @out;
my $res;
local $@;
$res = eval {
for my $i ( 0 .. $#$obj ) {
push @out, _clone( $obj->[$i] ),;
}
bless( \@out, $ref );
};
return $res if $res;
# assume it's a blessed HASH
for my $i ( keys %$obj ) {
push @out, $i, _clone( $obj->{$i} );
}
return bless( {@out}, $ref );
}
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