add some return test to functions

lib/parser/control.rb

@@ -14,7 +14,7 @@ module Parser
                               expressions_end.as(:body)
     end
     rule(:simple_return) do
-      keyword_return >> (operator_expression|value_expression).as(:return_expression) >> eol
+      keyword_return >> (operator_expression|value_expression).as(:return_expression)
     end
   end
 end

lib/parser/expression.rb

@@ -4,7 +4,7 @@ module Parser
     
     rule(:value_expression) { call_site | basic_type }
 
-    rule(:expression) { (while_do | conditional | operator_expression | call_site ) >> newline }
+    rule(:expression) { (simple_return | while_do | conditional | operator_expression | call_site ) >> newline }
 
     def delimited_expressions( delimit )
       ( (delimit.absent? >> expression).repeat(1)).as(:expressions) >> delimit