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From: favierp@sofreavia.fr (Pierre Favier)
Newsgroups: comp.lang.ada
Subject: How to test object hierarchy
Date: 18 Dec 2003 10:24:29 -0800
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Date: 2003-12-18T10:24:29-08:00
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I am wondering how to test for two objects which types both derive from a
common root type if one of them derives from the other. In short, I am trying
to run something like the following code which does not compile because
the Class attribute applies to types or subtypes but not to objects:

   procedure Test_Hierarchy (Obj1 : in Root_Object'Class;
                             Obj2 : in Root_Object'Class) is
   begin

      if Obj1 in Obj2'Class then

         -- Do something

      else

         -- Do something else

      end if;

   end Test_Hierarchy;

Any suggestions on how to achieve the intended effect?