lib/lisp.rb in lisp-1.0.3 vs lib/lisp.rb in lisp-1.0.4

@@ -11,11 +11,11 @@
     string.gsub("("," ( ").gsub(")"," ) ").split
   end
 
   def self.parse(tokens, tree = [])
     raise "unexpected: eof" if tokens.size.zero?
-    token = tokens.shift
-    case token
+
+    case token = tokens.shift
     when "("
       while tokens[0] != ")" do
         tree.push parse(tokens)
       end
       tokens.shift