RE: [sv-ec] why contraints is declared as a task

Hi,

Please see Mantis 2902 (http://www.eda-stds.org/mantis/view.php?id=2902).

Regards,
Shalom

From: owner-sv-ec@eda.org [mailto:owner-sv-ec@eda.org] On Behalf Of Daniel Mlynek
Sent: Wednesday, September 15, 2010 8:11 AM
To: sv-ec@eda.org
Cc: 'Grzegorz Kunc'; 'Marek Nadrowski'
Subject: [sv-ec] why contraints is declared as a task

1. Lrm says that constrain_mode is a task:

task object[.constraint_identifier]::constraint_mode( bit on_off );

This implies that constraint_mode cannot be set in functions as function cannot enable task. This is serious restriction as constrain_mode cannot be called ie in contructor.

Why not changing the given syntax to void function. The 2nd issue in above syntax is missuse of scope operator ::. Imho there should be . instead ::

function void object[.constraint_identifier].constraint_mode( bit on_off );

2. The last thing is that whole syntax is at least strange. imho it should be changed to show the constraint_mode function header:

function void constraint_mode( bit on_off );

and then it should be described that constrain header can be called via dot on:

object

constraint_identifier

and for static constrtaints it can be also called via scope operator on:

constraint_identifier

DANiel

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