+//we need to redefine this even though it is in Control.Monad.State
+instance MonadTrans (StateT Gamma) where
+ liftT m = StateT \s-> m >>= \a-> return (a, s)
+
+get = gets id
+
+getRandomStream :: Int -> [String]
+getRandomStream i = genIdents $ filter (isAlpha o toChar) (genRandInt i)
+ where
+ genIdents r = let (ic, r) = splitAt 5 r in [toString ic: genIdents r]
+
+freshIdent :: Gamma -> (String, Gamma)
+freshIdent (st, [ident:rest]) = case 'Map'.get ident st of
+ Nothing = (ident, (st, rest))
+ _ = freshIdent (st, rest)