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#!./perl
use strict;
use warnings;
use Test::More tests => 32;
use Scalar::Util qw(refaddr);
use vars qw(*F);
use Symbol qw(gensym);
# Ensure we do not trigger and tied methods
tie *F, 'MyTie';
my $i = 1;
foreach my $v (undef, 10, 'string') {
is(refaddr($v), undef, "not " . (defined($v) ? "'$v'" : "undef"));
}
my $t;
foreach my $r ({}, \$t, [], \*F, sub {}) {
my $n = "$r";
$n =~ /0x(\w+)/;
my $addr = do { no warnings; hex $1 };
my $before = ref($r);
is( refaddr($r), $addr, $n);
is( ref($r), $before, $n);
my $obj = bless $r, 'FooBar';
is( refaddr($r), $addr, "blessed with overload $n");
is( ref($r), 'FooBar', $n);
}
{
my $z = '77';
my $y = \$z;
my $a = '78';
my $b = \$a;
tie my %x, 'Hash3', {};
$x{$y} = 22;
$x{$b} = 23;
my $xy = $x{$y};
my $xb = $x{$b};
ok(ref($x{$y}));
ok(ref($x{$b}));
ok(refaddr($xy) == refaddr($y));
ok(refaddr($xb) == refaddr($b));
ok(refaddr($x{$y}));
ok(refaddr($x{$b}));
}
{
my $z = bless {}, '0';
ok(refaddr($z));
{
no strict 'refs';
@{"0::ISA"} = qw(FooBar);
}
my $a = {};
my $r = refaddr($a);
$z = bless $a, '0';
ok(refaddr($z) > 10);
is(refaddr($z),$r,"foo");
}
package FooBar;
use overload '0+' => sub { 10 },
'+' => sub { 10 + $_[1] },
'""' => sub { "10" };
package MyTie;
sub TIEHANDLE { bless {} }
sub DESTROY {}
sub AUTOLOAD {
our $AUTOLOAD;
warn "$AUTOLOAD called";
exit 1; # May be in an eval
}
package Hash3;
use Scalar::Util qw(refaddr);
sub TIEHASH
{
my $pkg = shift;
return bless [ @_ ], $pkg;
}
sub FETCH
{
my $self = shift;
my $key = shift;
my ($underlying) = @$self;
return $underlying->{refaddr($key)};
}
sub STORE
{
my $self = shift;
my $key = shift;
my $value = shift;
my ($underlying) = @$self;
return ($underlying->{refaddr($key)} = $key);
}
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