use Data::Dumper;

sub rec_data {
    my $path = shift; # ->{foo}->{bar}
    my $data = shift; # nested perl structure
	my $data_main = shift;
	print Dumper($data_main);#let's see the fact
	my @results;
    
    # nothing to search
    return unless ref $data;

    # stop the evals complaining
    no warnings 'all';
    
    if (ref $data eq 'HASH') {
        foreach my $k (keys %$data) {
            my $ref = qq|\$data->{$k}$path|;
            if (my $val = eval($ref)) {
                push @results, ref($val) ? $val : eval "\\$ref";
            }
            
            if (ref $data->{$k}) {
				print "calling from entry point1, k = $k\n";
                push @results, rec_data($path, $data->{$k}, $data_main);#just pass the third parameter along without change(?)
            }
        }
    }
    elsif (ref $data eq 'ARRAY') {
        foreach my $k (@$data) {
            my $ref = qq|\$k$path|;
            if (my $val = eval($ref)) {
				push @results, ref($val) ? $val : eval "\\$ref";
            }
            
            if (ref $k) {
                print "calling from entry point2\n";
				push @results, rec_data($path, $k, $data_main);
            }
        }
    }

    return @results;
}


my $data_main = {
    test  => { 
        foo => { bar => 'bar', baz => 'baz' },
        bar => { baz => 'baz' } ,
    }
};

my @results = rec_data('->{foo}->{bar}', $data_main, $data_main);#The program should never change the third parameter, is that true?
print Dumper(\@results);