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From: "Oliver Kellogg" <oliver.kellogg@t-online.de>
Newsgroups: comp.lang.ada
Subject: derived_type_definition ::= [abstract] new subtype_ind
 [record_extension_part]
Date: Fri, 14 Mar 2003 03:34:38 +0100
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Date: 2003-03-14T03:34:38+01:00
List-Id: <comp.lang.ada>

The Ada95 grammar has just one rule, derived_type_definition,
to denote both an ordinary derived type and a derived record
extension. How come the distinction is missing?

(When making an abstract syntax tree for Ada, I wonder
whether this is fine-grained enough. In particular, it
doesn't feel right to have just one node representing
both alternatives.)

O. Kellogg