Library cell names

Comments

• Matthias

  May 2014 edited May 2014

  Hi David,

  almost .. There is no method to iterate the PCell declarations currently (I simply forgot).

  But there is a workaround: although not documented explicitly, the PCell ID's are assigned as consecutive numbers 0, 1, 2, ... (disclaimer: I don't guarantee that for the future, but then there will be a method to iterate explicitly).

  Since the pcell_declaration method will return nil for invalid ID's, it's possible to iterate by trying ID 0, 1, ... and so forth:

  RBA::Library::library_names.each do |lib_name|
  
    puts "Library #{lib_name}:"
  
    lib = RBA::Library::library_by_name(lib_name)
  
    layout = lib.layout
  
    puts "  Static cells:"
    layout.each_cell do |cell|
      attr = ""
      if cell.is_proxy?
        attr += " (proxy)"
      end
      if cell.is_ghost_cell?
        attr += " (ghost)"
      end
      puts "    " + cell.name + attr
    end
  
    puts "  PCells:"
    # workaround: missing iterator for PCell's
    pcell_id = 0
    while pcell_decl = layout.pcell_declaration(pcell_id)
      puts "    " + pcell_decl.name
      pcell_id += 1
    end
  
  end
  

  Please also note, that this script will show some static cells you probably don't expect. These proxy cells act as placeholders for PCell's and cells imported from other libraries and are listed with a "(proxy)" attribute. There are also "ghost" cells which act as placeholders for cells instantiated but not defined in a GDS2 file.

  Matthias
• david234589

  May 2014 edited November -1

  That works great for now. Thanks.

  David