vt -api with conversion to resource API names

src/runtime/haskell/PGF/ToApi.hs

@@ -1,5 +1,5 @@
 module PGF.ToAPI 
- (stringToAPI,exprToAPI)
+ (stringToAPI,exprToAPI,exprToAPIIO)
   where
 
 import PGF.Expr
@@ -14,6 +14,10 @@ import qualified Data.Map as Map
 import PGF.Signature
 
 
+--- this will be changed
+exprToAPIIO :: Expr -> IO String
+exprToAPIIO = exprToAPI   -- return . exprToAPI
+
 
 -- intermediate structure for representing the translated expression
 data APIfunc = BasicFunc String | AppFunc String [APIfunc] | NoAPI