RE: [sv-cc] Object of class of objects as a property

I do not see the value-add for these properties- whatever we would end-up calling them.  The vpiType property already returns 'vpiProgram' for a program handle, and vpiProgram is implicitly already a vpiScope.  I could see *maybe* a vpiIsScope property to avoid a switch/case for a "mixed bag" of handle types, but a 'vpiProgram' property is merely equivalent to:

      (vpi_get(vpiType, <unknown_handle>) == vpiProgram ? 1 : 0);

Regards,
chuck

From: owner-sv-cc@eda.org [mailto:owner-sv-cc@eda.org] On Behalf Of Jim Vellenga
Sent: Thursday, January 16, 2014 9:46 AM
To: Radosław Nawrot; 'Bresticker, Shalom'; sv-cc@eda.org
Subject: RE: [sv-cc] Object of class of objects as a property

Not as trivial as it sounds.  I have added the following note to 4837:
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Unfortunately, this is not consistent with assumptions made in the design of VPI.  In particular, vpi_user.h and sv_vpi_user.h do not use distinct sets of integers for object types and for properties.  For example, vpiModule (a type) and vpiStrength1 (a property) both have the value 32, so if an application issues a call to vpi_get(vpiModule, <primitive_handle>) or to vpi_get(vpiStrength1, <primitive_handle>), the implementation has no way to distinguish them.  Changing either set of values would cause existing already compiled applications to fail.

To get the desired information, however, one might define new properties such as vpiIsProgram, vpiIsScope, and so on.
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Regards,
Jim Vellenga

From: owner-sv-cc@eda.org [mailto:owner-sv-cc@eda.org] On Behalf Of Radoslaw Nawrot
Sent: Thursday, January 16, 2014 6:00 AM
To: 'Bresticker, Shalom'; sv-cc@eda.org
Subject: RE: [sv-cc] Object of class of objects as a property

Thanks

________________________________
From: Bresticker, Shalom [mailto:shalom.bresticker@intel.com]
Sent: Thursday, January 16, 2014 11:54 AM
To: Radosław Nawrot; sv-cc@eda.org
Subject: RE: [sv-cc] Object of class of objects as a property
I filed this for you in Mantis 4837.

From: owner-sv-cc@eda.org [mailto:owner-sv-cc@eda.org] On Behalf Of Rados?aw Nawrot
Sent: Thursday, January 16, 2014 12:02
To: sv-cc@eda.org
Subject: [sv-cc] Object of class of objects as a property

Hi ,
I have proposal od small feature :

37.3.2 Object type properties
Type of object or class of objects can be property of bool type.

i.e

hnd_to_program - vpiHandle with handle to vpiProgram

vpi_get(vpiProgram,hnd_to_program )   - should return true
vpi_get(vpiScope,hnd_to_program )   - should return true

Implementation of this feature should be trivial , editors change in LRM also , and (i.e second example) its very usefull,

Regards,
Radek


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