This BIG PATCH contains most of the work for the New Coercion Representation

[ghc-hetmet.git] / compiler / typecheck / TcEnv.lhs

diff --git a/compiler/typecheck/TcEnv.lhs b/compiler/typecheck/TcEnv.lhs
index 354e4b2..f1d14a5 100644 (file)
--- a/compiler/typecheck/TcEnv.lhs
+++ b/compiler/typecheck/TcEnv.lhs
@@ -626,7 +626,8 @@ data InstBindings a
                        -- witness dictionary is identical to the argument 
                        -- dictionary.  Hence no bindings, no pragmas.
 
-       CoercionI       -- The coercion maps from newtype to the representation type
+          -- BAY* : should this be a CoAxiom?
+       Coercion        -- The coercion maps from newtype to the representation type
                        -- (mentioning type variables bound by the forall'd iSpec variables)
                        -- E.g.   newtype instance N [a] = N1 (Tree a)
                        --        co : N [a] ~ Tree a
@@ -640,7 +641,7 @@ data InstBindings a
 pprInstInfo :: InstInfo a -> SDoc
 pprInstInfo info = hang (ptext (sLit "instance"))
                       2 (sep [ ifPprDebug (pprForAll tvs)
-                             , pprThetaArrow theta, ppr tau
+                             , pprThetaArrowTy theta, ppr tau
                              , ptext (sLit "where")])
   where
     (tvs, theta, tau) = tcSplitSigmaTy (idType (iDFunId info))