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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Recursive parameters in generics
Newsgroups: comp.lang.ada
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Organization: cbb software GmbH
Date: Mon, 23 Jul 2007 20:20:54 +0200
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Date: 2007-07-23T20:20:37+02:00
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Hi there,

out of curiosity, recently experimenting with workarounds for generics, I
invented a construct, which puzzles me. Is the following legal:

generic
   S : String;
package A is
   S_Of : String renames S;
end A;
-----------------------------------
with A;
generic
   S : String;
   with package This_A is new A (S => S);
package B is
end B;
-----------------------------------
with A;
package My_A is new A (S => "whatever");
-----------------------------------
with My_A;
with B;
package My_B is
   new B (This_A => My_A, S => My_A.S_Of);
-----------------------------------
One could think that My_B would take S_Of from an instance of A and then
pass it back to A.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de