updates for compatibility with GHC HEAD

src/GHC/Util/Brackets.hs

@@ -36,8 +36,6 @@ instance Brackets (LocatedA (HsExpr GhcPs)) where
   isAtom (L _ x) = case x of
       HsVar{} -> True
       HsUnboundVar{} -> True
-      -- Technically atomic, but lots of people think it shouldn't be
-      HsRecSel{} -> False
       -- Only relevant for OverloadedRecordDot extension
       HsGetField{} -> True
       HsOverLabel{} -> True
@@ -61,12 +59,10 @@ instance Brackets (LocatedA (HsExpr GhcPs)) where
       _  -> False
       where
         isNegativeLit (HsInt _ i) = il_neg i
-        isNegativeLit (HsRat _ f _) = fl_neg f
         isNegativeLit (HsFloatPrim _ f) = fl_neg f
         isNegativeLit (HsDoublePrim _ f) = fl_neg f
         isNegativeLit (HsIntPrim _ x) = x < 0
         isNegativeLit (HsInt64Prim _ x) = x < 0
-        isNegativeLit (HsInteger _ x _) = x < 0
         isNegativeLit _ = False
         isNegativeOverLit OverLit {ol_val=HsIntegral i} = il_neg i
         isNegativeOverLit OverLit {ol_val=HsFractional f} = fl_neg f
@@ -133,8 +129,6 @@ instance Brackets (LocatedA (Pat GhcPs)) where
       isSignedLit HsInt{} = True
       isSignedLit HsIntPrim{} = True
       isSignedLit HsInt64Prim{} = True
-      isSignedLit HsInteger{} = True
-      isSignedLit HsRat{} = True
       isSignedLit HsFloatPrim{} = True
       isSignedLit HsDoublePrim{} = True
       isSignedLit _ = False

src/GHC/Util/FreeVars.hs

@@ -128,7 +128,6 @@ instance FreeVars (LocatedA (HsExpr GhcPs)) where
   freeVars (L _ (HsUntypedBracket _ (ExpBr _ e))) = freeVars e
   freeVars (L _ (HsUntypedBracket _ (VarBr _ _ v))) = Set.fromList [occName (unLoc v)]
 
-  freeVars (L _ HsRecSel{}) = mempty -- Variable pointing to a record selector.
   freeVars (L _ HsOverLabel{}) = mempty -- Overloaded label. The id of the in-scope fromLabel.
   freeVars (L _ HsIPVar{}) = mempty -- Implicit parameter.
   freeVars (L _ HsOverLit{}) = mempty -- Overloaded literal.
@@ -172,10 +171,6 @@ instance FreeVars (LocatedA (HsFieldBind (LocatedA (FieldOcc GhcPs)) (LocatedA (
    freeVars o@(L _ (HsFieldBind _ x _ True)) = Set.singleton $ occName $ unLoc $ foLabel $ unLoc x -- a pun
    freeVars o@(L _ (HsFieldBind _ _ x _)) = freeVars x
 
-instance FreeVars (LocatedA (HsFieldBind (LocatedA (AmbiguousFieldOcc GhcPs)) (LocatedA (HsExpr GhcPs)))) where
-  freeVars (L _ (HsFieldBind _ x _ True)) = Set.singleton $ rdrNameOcc $ ambiguousFieldOccRdrName $ unLoc x -- a pun
-  freeVars (L _ (HsFieldBind _ _ x _)) = freeVars x
-
 instance FreeVars (LocatedA (HsFieldBind (LocatedAn NoEpAnns (FieldLabelStrings GhcPs)) (LocatedA (HsExpr GhcPs)))) where
   freeVars (L _ (HsFieldBind _ _ x _)) = freeVars x
 

src/GHC/Util/Scope.hs

@@ -119,7 +119,7 @@ possImport (L _ i) (L _ (Unqual x)) =
     then maybe PossiblyImported (f . first (== EverythingBut)) (ideclImportList i)
     else NotImported
   where
-    f :: (Bool, LocatedL [LIE GhcPs]) -> IsImported
+    f :: (Bool, LocatedLI [LocatedA (IE GhcPs)]) -> IsImported
     f (hide, L _ xs)
       | hide = if Just True `elem` ms then NotImported else PossiblyImported
       | Just True `elem` ms = Imported

src/GHC/Util/Unify.hs

@@ -119,7 +119,10 @@ unify' nm root x y
     | Just (x :: EpAnn AnnContext) <- cast x = Just mempty
     | Just (x :: EpAnn AnnExplicitSum) <- cast x = Just mempty
     | Just (x :: EpAnn AnnFieldLabel) <- cast x = Just mempty
-    | Just (x :: EpAnn AnnList) <- cast x = Just mempty
+    | Just (x :: EpAnn (AnnList [EpToken ","])) <- cast x = Just mempty
+    | Just (x :: EpAnn (AnnList ())) <- cast x = Just mempty
+    | Just (x :: EpAnn (AnnList (EpToken "where"))) <- cast x = Just mempty
+    | Just (x :: EpAnn (AnnList (EpToken "hiding", [EpToken ","]))) <- cast x = Just mempty
     | Just (x :: EpAnn AnnListItem) <- cast x = Just mempty
     | Just (x :: EpAnn AnnParen) <- cast x = Just mempty
     | Just (x :: EpAnn AnnPragma) <- cast x = Just mempty
@@ -135,18 +138,33 @@ unify' nm root x y
     | Just (x :: EpAnn HsRuleAnn) <- cast x = Just mempty
     | Just (x :: EpAnn NameAnn) <- cast x = Just mempty
     | Just (x :: EpAnn NoEpAnns) <- cast x = Just mempty
-    | Just (x :: EpAnn [AddEpAnn]) <- cast x = Just mempty
-    | Just (x :: EpAnn (AddEpAnn, AddEpAnn)) <- cast x = Just mempty
-    | Just (x :: EpToken "let") <- cast x = Just mempty
-    | Just (x :: EpToken "in") <- cast x = Just mempty
-    | Just (x :: EpToken "@") <- cast x = Just mempty
+    | Just (x :: EpToken "|") <- cast x = Just mempty
+    | Just (x :: EpToken ",") <- cast x = Just mempty
+    | Just (x :: EpToken ";") <- cast x = Just mempty
+    | Just (x :: EpToken "`") <- cast x = Just mempty
+    | Just (x :: EpToken ".") <- cast x = Just mempty
+    | Just (x :: EpToken "\\") <- cast x = Just mempty
     | Just (x :: EpToken "(") <- cast x = Just mempty
     | Just (x :: EpToken ")") <- cast x = Just mempty
+    | Just (x :: EpToken "@") <- cast x = Just mempty
+    | Just (x :: EpToken "#-}") <- cast x = Just mempty
+    | Just (x :: EpToken "if") <- cast x = Just mempty
+    | Just (x :: EpToken "then") <- cast x = Just mempty
+    | Just (x :: EpToken "else") <- cast x = Just mempty
+    | Just (x :: EpToken "case") <- cast x = Just mempty
+    | Just (x :: EpToken "of") <- cast x = Just mempty
+    | Just (x :: EpToken "in") <- cast x = Just mempty
     | Just (x :: EpToken "type") <- cast x = Just mempty
     | Just (x :: EpToken "%") <- cast x = Just mempty
     | Just (x :: EpToken "%1") <- cast x = Just mempty
-    | Just (x :: EpToken "⊸") <- cast x = Just mempty
+    | Just (x :: EpToken "proc") <- cast x = Just mempty
+    | Just (x :: EpToken "static") <- cast x = Just mempty
+    | Just (x :: EpToken "qualified") <- cast x = Just mempty
+    | Just (x :: EpToken "safe") <- cast x = Just mempty
+    | Just (x :: EpToken "as") <- cast x = Just mempty
+    | Just (x :: EpToken "import") <- cast x = Just mempty
     | Just (x :: EpUniToken "->" "→") <- cast x = Just mempty
+    | Just (x :: EpUniToken "::" "∷") <- cast x = Just mempty
     | Just (x :: TokenLocation) <- cast y = Just mempty
     | Just (y :: SrcSpan) <- cast y = Just mempty
 

src/Hint/Pattern.hs

@@ -69,7 +69,7 @@ import Data.Either
 import Refact.Types hiding (RType(Pattern, Match), SrcSpan)
 import Refact.Types qualified as R (RType(Pattern, Match), SrcSpan)
 
-import GHC.Hs
+import GHC.Hs hiding (asPattern)
 import GHC.Types.SrcLoc
 import GHC.Types.Name.Reader
 import GHC.Types.Name.Occurrence