Lines Matching refs:isa
478 if ref($wanted) && $wanted->isa($class); # MBI or subclass
996 ((!$x->isa($self)) || (!$y->isa($self)));
1041 ((!$x->isa($self)) || (!$y->isa($self)));
1069 ((!$x->isa($self)) || (!$y->isa($self)));
1135 ((!$x->isa($self)) || (!$y->isa($self)));
1408 if defined $upgrade && !$y->isa($self);
1666 if defined $upgrade && !$y->isa($self);