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 newbie's question: how to delete an object using SKILL 

Last post Mon, Aug 24 2009 5:23 PM by llobak. 4 replies.
Started by llobak 24 Aug 2009 12:33 AM. Topic has 4 replies and 2376 views
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  • Mon, Aug 24 2009 12:33 AM

    • llobak
    • Top 500 Contributor
    • Joined on Thu, Aug 20 2009
    • Melaka, Melaka
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    newbie's question: how to delete an object using SKILL Reply

    Hi,

     I'm new to SKILL programming and I want to write a program that delete certain layer from certain library. For example, i want to delete all the metal1 object in all the cell in "a" library. Can someone please help me? below is part of my program:

     

    procedure( delLayer( libName )
        count = 0
        lib = ddGetObj( libName)
       
            foreach( cell lib~>cells
            if( setof( the_view cell~>views the_view~>name == "layout") then
               
                cv = dbOpenCellViewByType( libName cell~>name "layout")
               
    foreach(layer cv~>shapes~>layerName
                    if( layer == "MET1" then
                       **** need help in this area ***

    I've tried dbDeleteObject() but i just can't seems to get it right
                       
                        count++ );if
                        );foreach layer
                       
                        dbClose( cv)
            );foreach cell
            );if setof
    );procedure

    • Post Points: 20
  • Mon, Aug 24 2009 1:04 AM

    • kbhow
    • Top 75 Contributor
    • Joined on Thu, May 7 2009
    • Penang, Pulau Pinang
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    Re: newbie's question: how to delete an object using SKILL Reply

    Hi,

    There are more simple way to grab all the shapes with layer rather than using cv~>shapes. A better propose is using setof(x cv~>lpps x~>layerName == "METAL1"). This will save time and less steps needed instead of running on all shapes in the cell view.

    I did some modication on your code. Please try it. 

    procedure( delLayer( libName )
        count = 0
        lib = ddGetObj( libName)
       
            foreach( cell lib~>cells
                if( setof( the_view cell~>views the_view~>name == "layout") then
               
                cv = dbOpenCellViewByType( libName cell~>name "layout")
               
                foreach( shape car(setof(x cv~>lpps x~>layerName == "MET1"))~>shapes

                   dbDeleteObject(shape)

                    count++ 

                )

                ;;foreach(layer cv~>shapes~>layerName
                ;;    if( layer == "MET1" then
                ;;      **** need help in this area ***

                ;;I've tried dbDeleteObject() but i just can't seems to get it right
                ;;       
                ;;        count++ );if
                ;;        );foreach layer
                       
                        dbClose( cv)
            );foreach cell
            );if setof
    );procedure

     

    BTW, there is a lot of space to improve in your script such as in checking for layout view. You can check whether the cell view is layout or not by checking its cell view type (eg: cv~>cellViewType == "maskLayout")

    Cheers.

    How

    • Post Points: 35
  • Mon, Aug 24 2009 1:59 AM

    • llobak
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    • Joined on Thu, Aug 20 2009
    • Melaka, Melaka
    • Posts 19
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    Re: newbie's question: how to delete an object using SKILL Reply

    Thanks alot for your help. Really appreciate it very much.

    • Post Points: 5
  • Mon, Aug 24 2009 7:47 AM

    • skillUser
    • Top 10 Contributor
    • Joined on Fri, Sep 19 2008
    • Austin, TX
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    Re: newbie's question: how to delete an object using SKILL Reply

     Nice suggestion, using lpps will generally be more efficient since there are typically many more shapes in a cellview than there will be layer-purpose pairs, so this method could be one or two orders of magnitude fewer items to iterate over.

    The code could be improved even further by adding local variables:

    procedure( delLayer( libName )
      let( ((count 0) lib cv)
        ;; count = 0 ;; no longer needed, initialised in let statement
        lib = ddGetObj( libName)
       
            foreach( cell lib~>cells
    
                when( setof( the_view cell~>views the_view~>name == "layout")
               
                cv = dbOpenCellViewByType( libName cell~>name "layout")
               
                foreach( shape car(setof(x cv~>lpps x~>layerName == "MET1"))~>shapes
    
                   dbDeleteObject(shape)
    
                    count++ 
    
                ); foreach shape
                       
                dbClose( cv )
    
            );when setof
    
          );foreach cell
    
        count ;; return the number removed
    
      ); let 
    
    );procedure
    

    Also I swapped the closing parentheses comments for the if (changed to when in my example) and foreach statements as they were in the wrong order. Hope this helps!

    Regards,

    Lawrence.

    • Post Points: 20
  • Mon, Aug 24 2009 5:23 PM

    • llobak
    • Top 500 Contributor
    • Joined on Thu, Aug 20 2009
    • Melaka, Melaka
    • Posts 19
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    Re: newbie's question: how to delete an object using SKILL Reply

    Thanks to How and Lawrence! Your advise are really very helpful. Thank you again.

     Regards,

    Low

    • Post Points: 5
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Started by llobak at 24 Aug 2009 12:33 AM. Topic has 4 replies.