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-rw-r--r--libraries/template-haskell/Language/Haskell/TH/Lib.hs9
1 files changed, 9 insertions, 0 deletions
diff --git a/libraries/template-haskell/Language/Haskell/TH/Lib.hs b/libraries/template-haskell/Language/Haskell/TH/Lib.hs
index 08235ba2c8..345f16b33c 100644
--- a/libraries/template-haskell/Language/Haskell/TH/Lib.hs
+++ b/libraries/template-haskell/Language/Haskell/TH/Lib.hs
@@ -533,6 +533,15 @@ classP cla tys
tysl <- sequence tys
return (foldl AppT (ConT cla) tysl)
+{-# DEPRECATED equalP "Constraint constructors are just type constructors, frob this code as 'equalT'." #-}
+equalP :: TypeQ -> TypeQ -> PredQ
+equalP tleft tright
+ = do
+ tleft1 <- tleft
+ tright1 <- tright
+ eqT <- equalityT
+ return (foldl AppT eqT [tleft1, tright1])
+
promotedT :: Name -> TypeQ
promotedT = return . PromotedT