1 files changed, 12 insertions, 1 deletions
diff --git a/src/Interpreter/Rep.hs b/src/Interpreter/Rep.hs
index adb4eba..ed307c0 100644
--- a/src/Interpreter/Rep.hs
+++ b/src/Interpreter/Rep.hs
@@ -39,5 +39,16 @@ type family RepAcDense t where
   -- RepAcDense (TScal sty) = ScalRep sty
   -- RepAcDense (TAccum t) = TypeError (Text "RepAcDense: Nested accumulators")
 
-newtype Value t = Value (Rep t)
+newtype Value t = Value { unValue :: Rep t }
 
+liftV :: (Rep a -> Rep b) -> Value a -> Value b
+liftV f (Value x) = Value (f x)
+
+liftV2 :: (Rep a -> Rep b -> Rep c) -> Value a -> Value b -> Value c
+liftV2 f (Value x) (Value y) = Value (f x y)
+
+vPair :: Value a -> Value b -> Value (TPair a b)
+vPair = liftV2 (,)
+
+vUnpair :: Value (TPair a b) -> (Value a, Value b)
+vUnpair (Value (x, y)) = (Value x, Value y)