From: Jean-Claude Rostaing <00120260a@gmail.com>
Subject: changing rules for anonymous access types to named ones
Date: Mon, 2 Apr 2018 09:39:36 -0700 (PDT)
Date: 2018-04-02T09:39:36-07:00 [thread overview]
Message-ID: <b2039dba-c5b9-4bf1-a589-bf055c713621@googlegroups.com> (raw)
Hi.
There's definitely a change in rules from 95 to 2012 I spotted, which makes things more ugly:
that: Set(new Plus_Operator);
was written for ada95. Now, it gives the error:
expected type "TOKEN_ACCESS" defined at expressions.ads:22
found type access to "Plus_Operator" defined at line 48
TOKEN_ACCESS is merely a named access type to TOKEN_TYPE'class, which PLUS_OPERATOR is a child of.
I made a compilable exemple of my case:
with ada.Text_IO;
use ada.Text_IO;
procedure ESSAI is
type A is abstract tagged limited null record;
type A_Child is new A with null record;
type pointers_A is access A'CLASS;
type B is interface;
type B_child is new B with null record;
type pointers_B is access b'CLASS;
function F1 (obj: pointers_A) return INTEGER is (1);
function F2 (obj: pointers_b) return INTEGER IS (1);
begin
PUT_LINE("avec abstract tagged null record : " & INTEGER'IMAGE(F1(new A_child));
Put_Line("AVEC interface : " & INTEGER'IMAGE(F2(new B_child));
end;
Only the second statement fails. I could find nothing in the access type section related to interface nor the reciprocal so I'm sure it's not normal.
next reply other threads:[~2018-04-02 16:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-02 16:39 Jean-Claude Rostaing [this message]
2018-04-02 18:04 ` changing rules for anonymous access types to named ones Jere
2018-04-02 21:09 ` Jean-Claude Rostaing
2018-04-03 8:41 ` Dmitry A. Kazakov
2018-04-03 11:29 ` Jean-Claude Rostaing
2018-04-03 12:44 ` Dmitry A. Kazakov
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