director_abstract

MyFoo=@() subclass(director_abstract.Foo(),@ping);
function out=ping(self)
  out="MyFoo::ping()";
end


a = MyFoo();

if (!strcmp(a.ping(),"MyFoo::ping()"))
  error(a.ping())
endif

if (!strcmp(a.pong(),"Foo::pong();MyFoo::ping()"))
  error(a.pong())
endif


MyExample1=@() subclass(director_abstract.Example1(),'Color',@(self,r,g,b) r);
MyExample2=@(a,b) subclass(director_abstract.Example2(a,b),'Color',@(self,r,g,b) g);
MyExample3=@() subclass(director_abstract.Example3_i(),'Color',@(self,r,g,b) b);

me1 = MyExample1();
if (director_abstract.Example1.get_color(me1, 1,2,3) != 1)
  error
endif

me2 = MyExample2(1,2);
if (me2.get_color(me2, 1,2,3) != 2)
  error
endif

me3 = MyExample3();
if (me3.get_color(me3, 1,2,3) != 3)
  error
endif


# don't check that we cannot construct abstract bases, since we have no
# way of disambiguating that with the normal construction case using
# subclass. furthermore, calling a pure virtual method will still generate
# an error.

