perl 类里的函数调用其他类的函数

perl 类里的函数调用其他类的函数:

package Horse;
use base qw(Critter);
sub new {
my $invocant = shift;
my $class = ref($invocant) || $invocant;
my $self = {
color => "bay",
legs => 4,
owner => undef,
@_, # 覆盖以前的属性
};
return bless $self, $class;
#return  $self;
};
sub sum1 {
       $self=shift;
       my $a=shift;
       my $b=shift;
       return $a + $b + 7;
};

our @arr=qw/1 2 3 4 5 6 7/;
our %h1=(1,2,3,4,5,6,7,8);
1;

[root@wx03 test]# cat Critter.pm
package Critter;
unshift(@INC,"/root/test");
use message;

sub new {
    my $self = {};
    my $invocant = shift;
my $class = ref($invocant) || $invocant;
	my ($name)=@_;
      my $self = {
         "name" =>$name
                 };
    bless $self, $class; # Use class name to bless() reference
    return $self;

};

sub sum2 {
       $self=shift;
       my $a=shift;
       my $b=shift;
       return $a + $b;
};

sub fun1 {
       $self=shift;
       message::message($self);
};
sub on_receive_msg:lvalue{
      $self=shift;
      $self->{name}="aabbccdd123141242";
      $self->{on_receive_msg};
};

our $str="12312";
1;

[root@wx03 test]# cat message.pm
package message;
sub message {
my $self=shift;
  $self->{color}="q3szczxcae2";
return "message 31313131\n";
};
1;

[root@wx03 test]# cat t10.pl
unshift(@INC,"/root/test");
use Horse;;
use Critter;
my $ua=Horse->new();

print $ua->fun1();
print $ua->{color};
print "\n";

[root@wx03 test]# perl t10.pl
message 31313131
q3szczxcae2