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Electronic Equipment > VHDL > Re: can I have ...
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Re: can I have unconstrained String as record element?

by KJ <kkjennings@[EMAIL PROTECTED] > Jun 24, 2008 at 09:02 AM

On Jun 24, 11:48=A0am, Tricky <Trickyh...@[EMAIL PROTECTED]
> wrote:
> Can I do what I asked, I suspect not, so Im thinking along the lines:
>

You suspect correctly, you can not have an unconstrained vector of any
type as a record element.

>
> Basically, I want to be able to give the record name a constant string
> when it is delcared like:
>
> CONSTANT my_record : my_record_type :=3D ( name =3D> "Betty Swollocks",
> --length only 15, complains unless I pad to 20 chars.
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0
=
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0
.......)=

>
> Or am I just going to have to pad the name with whitespace to make it
> up to name'length?

A cleaner way than simply typing in the extra whitespace is to define
a function that pads on the appropriate spaces and put that in the
same package where 'my_type' is defined.

function Padder(s: string) return string is
  variable s0: string(1 to s'length) :=3D s;
  variable RetVal: string(my_record_type.name'range);
begin
  RetVal :=3D (others =3D> ' ');
  RetVal(s0'range) :=3D s0;
=2E..
end function Padder;

That way you can initialize constants like this...
CONSTANT my_record : my_record_type :=3D ( name =3D> Padder("Betty
Swollocks"),...

KJ
 




 5 Posts in Topic:
can I have unconstrained String as record element?
Tricky <Trickyhead@[EM  2008-06-24 08:48:06 
Re: can I have unconstrained String as record element?
KJ <kkjennings@[EMAIL   2008-06-24 09:02:24 
Re: can I have unconstrained String as record element?
Andrew <sharpa17@[EMAI  2008-06-24 13:27:07 
Re: can I have unconstrained String as record element?
Reuven <rpaley000@[EMA  2008-06-24 16:07:39 
Re: can I have unconstrained String as record element?
Andrew <sharpa17@[EMAI  2008-06-25 04:50:41 

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tan12V112 Mon Dec 1 16:31:18 CST 2008.