fix some coercion kind representation things, extend exprIsConApp_maybe to non-vanilla

[ghc-hetmet.git] / compiler / basicTypes / Var.lhs

diff --git a/compiler/basicTypes/Var.lhs b/compiler/basicTypes/Var.lhs
index 697f089..e4aa8c2 100644 (file)
--- a/compiler/basicTypes/Var.lhs
+++ b/compiler/basicTypes/Var.lhs
@@ -10,7 +10,7 @@ module Var (
        setVarName, setVarUnique, 
 
        -- TyVars
-       TyVar, mkTyVar, mkTcTyVar,
+       TyVar, mkTyVar, mkTcTyVar, mkWildTyVar,
        tyVarName, tyVarKind,
        setTyVarName, setTyVarUnique, setTyVarKind,
        tcTyVarDetails,
@@ -40,9 +40,10 @@ import {-# SOURCE #-}        TcType( TcTyVarDetails, pprTcTyVarDetails )
 import {-# SOURCE #-}  IdInfo( GlobalIdDetails, notGlobalId, IdInfo, seqIdInfo )
 
 import Name            ( Name, NamedThing(..),
-                         setNameUnique, nameUnique
+                         setNameUnique, nameUnique, mkSysTvName
                        )
-import Unique          ( Unique, Uniquable(..), mkUniqueGrimily, getKey# )
+import Unique          ( Unique, Uniquable(..), mkUniqueGrimily, getKey#,
+                          mkBuiltinUnique )
 import FastTypes
 import Outputable
 \end{code}
@@ -197,6 +198,14 @@ mkTcTyVar name kind details
                tyVarKind  = kind,
                tcTyVarDetails = details
        }
+
+mkWildTyVar :: Kind -> TyVar
+mkWildTyVar kind 
+  = TyVar { varName = mkSysTvName wild_uniq FSLIT("co_wild"),
+            realUnique = _ILIT(1),
+            tyVarKind = kind }
+  where
+    wild_uniq = (mkBuiltinUnique 1)
 \end{code}
 
 %************************************************************************