lib/instructions/exec/exec_rotate.rb in nudge-0.2.6 vs lib/instructions/exec/exec_rotate.rb in nudge-0.2.7

@@ -1,4 +1,15 @@
+# pops the top 3 items of the +:exec+ stack;
+# pushes them back in _rotated_ order
+# 
+# If they were A, B and C (with C originally at the top of the stack)
+# the result will be B, C, A (with A at the top)
+#
+# *needs:* 3 +:exec+
+#
+# *pushes:* 3 +:exec+
+#
+
 class ExecRotateInstruction < Instruction
   include RotateInstruction
   def initialize(context)
     super(context, :exec)
   end