From: Niklas Holsti <nholsti@icon.fi>
Subject: Re: Ada address of operator?
Date: 1999/02/09
Date: 1999-02-09T00:00:00+00:00 [thread overview]
Message-ID: <36C0A636.C7ED48DA@icon.fi> (raw)
In-Reply-To: 36C02FFC.458368B1@aston.ac.uk
Danny wrote:
(snipped; question on C operator "&" = "address of" in Ada)
Use the 'Access attribute. Note the use of "all" in the declaration of
the access types, and "aliased" in the declaration of the variable
you are accessing. Example:
package Ptrs is
type AType is record
X : integer;
end record;
type AnotherType is record
Y : integer;
end record;
type ATypePtr is access all AType;
type AnotherTypePtr is access all AnotherType;
type AnotherTypePtrPtr is access all AnotherTypePtr;
--
pAnotherType : aliased AnotherTypePtr;
ppAnotherType : AnotherTypePtrPtr := pAnotherType'access;
end Ptrs;
But are you sure you need all those "Ptr"s? The standard Ada/C binding
from pragma Import (C...) supplies some *'s automatically; see
LRM B.3(63-84).
- Niklas
Working at but not speaking for Space Systems Finland Ltd
next prev parent reply other threads:[~1999-02-09 0:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-02-09 0:00 Ada address of operator? Danny
1999-02-09 0:00 ` Niklas Holsti [this message]
1999-02-10 0:00 ` Nick Roberts
1999-02-12 0:00 ` Nick Roberts
1999-02-11 0:00 ` Matthew Heaney
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