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VHDL Issue Number:        2076

Language_Version          VHDL-93
Classification            Language Modeling Enhancement or Deficiency
Summary                   a member attribute for records
Relevant_LRM_Sections     
Related_Issues            
Key_Words_and_Phrases     record, attribute
Authors_Name              Rickard Norberg
Authors_Phone_Number      +467075884108
Authors_Fax_Number        
Authors_Email_Address     rickard.norberg@saabtech.se
Authors_Affiliation       
Authors_Address1          
Authors_Address2          
Authors_Address3          

Current Status:           Forwarded

Superseded By:

------------------------
Date Submitted:           20 October 2005
Date Analyzed:
Author of Analysis:
Revision Number:          0
Date Last Revised:        17 November 2005

Description of Problem
----------------------

For a record like :
    
      type MyRecord_type is 
        record 
          Alice : unsigned(5 downto 0); 
          Bob   : signed(9 downto 0); 
          John :Boolean; 
          Adam  :bit; 
        end record MyRecord_type; 
    It would be nice to have an attribute something like this. 
    MyRecord'members which will return (Alice, Bob, John, Adam) 
    
    
    And in the other way around used in a loop 
    For n in MyRecord'members'left to MyRecord'members'right loop 
     If MyRecord.n'member :  SomeThing then 
       Do this.. 
     Else 
       Do that... 
     End if; 
    End loop; 
    
    
    

Proposed Resolution
-------------------



VASG-ISAC Analysis & Rationale
------------------------------

This is a language enhancement, so the ISAC has forwarded this to the
VASG. In addition, the ISAC believes that the utility of a record
iterator is far from clear, since the iterator index would range over
various types. A more complete use case is needed to understand just
what problem is being solved. The ISAC has contacted the submitter to
request a more complete use case.

VASG-ISAC Recommendation for IEEE Std 1076-2002
-----------------------------------------------
TBD

VASG-ISAC Recommendation for Future Revisions
---------------------------------------------

Forward to VASG as an enhancement.


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