fix haddock submodule pointer

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

diff --git a/compiler/typecheck/TcRnTypes.lhs b/compiler/typecheck/TcRnTypes.lhs
index 40f6a8d..d94ecd7 100644 (file)
--- a/compiler/typecheck/TcRnTypes.lhs
+++ b/compiler/typecheck/TcRnTypes.lhs
@@ -42,7 +42,7 @@ module TcRnTypes(
        CtOrigin(..), EqOrigin(..), 
         WantedLoc, GivenLoc, GivenKind(..), pushErrCtxt,
 
-        SkolemInfo(..),
+       SkolemInfo(..),
 
         CtFlavor(..), pprFlavorArising, isWanted, 
         isGivenOrSolved, isGiven_maybe,
@@ -64,6 +64,7 @@ module TcRnTypes(
 import HsSyn
 import HscTypes
 import Type
+import Id      ( evVarPred )
 import Class    ( Class )
 import DataCon  ( DataCon, dataConUserType )
 import TcType
@@ -326,6 +327,7 @@ data IfLclEnv
                -- plus which bit is currently being examined
 
        if_tv_env  :: UniqFM TyVar,     -- Nested tyvar bindings
+                                       -- (and coercions)
        if_id_env  :: UniqFM Id         -- Nested id binding
     }
 \end{code}
@@ -375,6 +377,7 @@ data TcLclEnv               -- Changes as we move inside an expression
                -- We still need the unsullied global name env so that
                --   we can look up record field names
 
+        tcl_hetMetLevel  :: [TyVar],    -- The current environment classifier level (list-of-names)
        tcl_env  :: TcTypeEnv,    -- The local type environment: Ids and
                                  -- TyVars defined in this module
                                        
@@ -511,7 +514,9 @@ data TcTyThing
 
   | ATcId   {          -- Ids defined in this module; may not be fully zonked
        tct_id    :: TcId,              
-       tct_level :: ThLevel }
+       tct_level :: ThLevel,
+       tct_hetMetLevel :: [TyVar]
+    }
 
   | ATyVar  Name TcType                -- The type to which the lexically scoped type vaiable
                                -- is currently refined. We only need the Name
@@ -526,7 +531,8 @@ instance Outputable TcTyThing where -- Debugging only
    ppr elt@(ATcId {})   = text "Identifier" <> 
                          brackets (ppr (tct_id elt) <> dcolon 
                                  <> ppr (varType (tct_id elt)) <> comma
-                                <+> ppr (tct_level elt))
+                                <+> ppr (tct_level elt)
+                                <+> ppr (tct_hetMetLevel elt))
    ppr (ATyVar tv _)    = text "Type variable" <+> quotes (ppr tv)
    ppr (AThing k)       = text "AThing" <+> ppr k
 
@@ -676,7 +682,6 @@ instance Outputable WhereFrom where
 %************************************************************************
 %*                                                                     *
                Wanted constraints
-
      These are forced to be in TcRnTypes because
           TcLclEnv mentions WantedConstraints
           WantedConstraint mentions CtLoc
@@ -903,7 +908,7 @@ pprEvVarTheta :: [EvVar] -> SDoc
 pprEvVarTheta ev_vars = pprTheta (map evVarPred ev_vars)
                               
 pprEvVarWithType :: EvVar -> SDoc
-pprEvVarWithType v = ppr v <+> dcolon <+> pprPred (evVarPred v)
+pprEvVarWithType v = ppr v <+> dcolon <+> pprPredTy (evVarPred v)
 
 pprWantedsWithLocs :: WantedConstraints -> SDoc
 pprWantedsWithLocs wcs