From af205d20bf3502b41e4fd34b1c991d5014388004 Mon Sep 17 00:00:00 2001
From: RyanGlScott <ryan.gl.scott@gmail.com>
Date: Sun, 17 Jan 2016 01:04:04 -0500
Subject: Render */# instead of TYPE 'Lifted/TYPE 'Unlifted (fixes #473)

---
 haddock-api/src/Haddock/Convert.hs | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

(limited to 'haddock-api')

diff --git a/haddock-api/src/Haddock/Convert.hs b/haddock-api/src/Haddock/Convert.hs
index b6dd06e9..02e4356a 100644
--- a/haddock-api/src/Haddock/Convert.hs
+++ b/haddock-api/src/Haddock/Convert.hs
@@ -1,3 +1,4 @@
+
 {-# LANGUAGE CPP, PatternGuards #-}
 -----------------------------------------------------------------------------
 -- |
@@ -33,9 +34,10 @@ import TcType ( tcSplitSigmaTy )
 import TyCon
 import Type
 import TyCoRep
-import TysPrim ( alphaTyVars )
-import TysWiredIn ( listTyConName )
-import PrelNames ( hasKey, eqTyConKey, ipClassKey )
+import TysPrim ( alphaTyVars, unliftedTypeKindTyConName )
+import TysWiredIn ( listTyConName, starKindTyConName )
+import PrelNames ( hasKey, eqTyConKey, ipClassKey
+                 , tYPETyConKey, liftedDataConKey, unliftedDataConKey )
 import Unique ( getUnique )
 import Util ( filterByList, filterOut )
 import Var
@@ -360,6 +362,15 @@ synifySigWcType s ty = mkEmptyImplicitBndrs (mkEmptyWildCardBndrs (synifyType s
 synifyType :: SynifyTypeState -> Type -> LHsType Name
 synifyType _ (TyVarTy tv) = noLoc $ HsTyVar $ noLoc (getName tv)
 synifyType _ (TyConApp tc tys)
+  -- Use */# instead of TYPE 'Lifted/TYPE 'Unlifted (#473)
+  | tc `hasKey` tYPETyConKey
+  , [TyConApp lev []] <- tys
+  , lev `hasKey` liftedDataConKey
+  = noLoc (HsTyVar (noLoc starKindTyConName))
+  | tc `hasKey` tYPETyConKey
+  , [TyConApp lev []] <- tys
+  , lev `hasKey` unliftedDataConKey
+  = noLoc (HsTyVar (noLoc unliftedTypeKindTyConName))
   -- Use non-prefix tuple syntax where possible, because it looks nicer.
   | Just sort <- tyConTuple_maybe tc
   , tyConArity tc == length tys
-- 
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