forked from mirrors/nixpkgs
56 lines
2.1 KiB
Diff
56 lines
2.1 KiB
Diff
From 24e6f45408083745080ff2f3710f58209041113c Mon Sep 17 00:00:00 2001
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From: Luite Stegeman <stegeman@gmail.com>
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Date: Sun, 28 Dec 2014 21:33:22 +0100
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Subject: [PATCH] updates for GHC 7.10 and Template Haskell 2.10
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---
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haskell-src-meta.cabal | 4 ++--
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src/Language/Haskell/Meta/Syntax/Translate.hs | 6 ++++++
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src/Language/Haskell/Meta/Utils.hs | 5 ++++-
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3 files changed, 12 insertions(+), 3 deletions(-)
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diff --git a/src/Language/Haskell/Meta/Syntax/Translate.hs b/src/Language/Haskell/Meta/Syntax/Translate.hs
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index 189d32e..36a08f1 100644
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--- a/src/Language/Haskell/Meta/Syntax/Translate.hs
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+++ b/src/Language/Haskell/Meta/Syntax/Translate.hs
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@@ -384,9 +384,15 @@ a .->. b = AppT (AppT ArrowT a) b
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toCxt :: Hs.Context -> Cxt
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toCxt = fmap toPred
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where
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+#if MIN_VERSION_template_haskell(2,10,0)
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+ toPred (Hs.ClassA n ts) = foldl' AppT (ConT (toName n)) (fmap toType ts)
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+ toPred (Hs.InfixA t1 n t2) = foldl' AppT (ConT (toName n)) (fmap toType [t1,t2])
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+ toPred (Hs.EqualP t1 t2) = foldl' AppT EqualityT (fmap toType [t1,t2])
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+#else
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toPred (Hs.ClassA n ts) = ClassP (toName n) (fmap toType ts)
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toPred (Hs.InfixA t1 n t2) = ClassP (toName n) (fmap toType [t1, t2])
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toPred (Hs.EqualP t1 t2) = EqualP (toType t1) (toType t2)
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+#endif
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toPred a@Hs.IParam{} = noTH "toCxt" a
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foldAppT :: Type -> [Type] -> Type
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diff --git a/src/Language/Haskell/Meta/Utils.hs b/src/Language/Haskell/Meta/Utils.hs
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index 36f7e96..d194f3e 100644
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--- a/src/Language/Haskell/Meta/Utils.hs
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+++ b/src/Language/Haskell/Meta/Utils.hs
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@@ -166,6 +166,9 @@ renameT env new (ForallT ns cxt t) =
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unVarT (VarT n) = PlainTV n
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renamePreds = renameThings renamePred
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+#if MIN_VERSION_template_haskell(2,10,0)
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+ renamePred = renameT
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+#else
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renamePred env new (ClassP n ts) = let
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(ts', env', new') = renameTs env new [] ts
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in (ClassP (normaliseName n) ts', env', new')
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@@ -174,7 +177,7 @@ renameT env new (ForallT ns cxt t) =
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(t1', env1, new1) = renameT env new t1
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(t2', env2, new2) = renameT env1 new1 t2
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in (EqualP t1' t2', env2, new2)
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-
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+#endif
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-- | Remove qualification, etc.
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normaliseName :: Name -> Name
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