lib/soroban/label_walker.rb in soroban-0.7.3 vs lib/soroban/label_walker.rb in soroban-0.8.0

@@ -1,30 +1,31 @@
+require 'soroban/helpers'
+
 module Soroban
 
-  # An enumerable that allows cells in a range to be visited.
+  # An enumerable that allows the labels for cells in a range to be visited.
   class LabelWalker
-
     include Enumerable
 
     # Create a new walker from a supplied range.
     def initialize(range)
-      @fc, @fr, @tc, @tr = Soroban::getRange(range)
+      @_fc, @_fr, @_tc, @_tr = Soroban::Helpers.getRange(range)
     end
 
-    # Yield the label of each cell referenced by the supplied range.
+    # Yield the label of each cell referenced by the supplied range. For a range
+    # of the form "A1:B4", this will yield "A1", "A2", "A3", ..., "B3", "B4".
     def each
-      col, row = @fc, @fr
+      col, row = @_fc, @_fr
       while true do
         yield "#{col}#{row}"
-        break if row == @tr && col == @tc
-        if row == @tr
-          row = @fr
+        break if row == @_tr && col == @_tc
+        if row == @_tr
+          row = @_fr
           col = col.next
         else
           row = row.next
         end
       end
     end
-
   end
 
 end