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MonadFail: Make backwards-compatible

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This commit is contained in:
Andreas Källberg
2020-09-05 20:23:07 +02:00
parent 1234c715fc
commit 7268253f5a
15 changed files with 49 additions and 16 deletions
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src/compiler/GF/Command/Commands2.hs
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@@ -25,7 +25,7 @@ data PGFEnv = Env {pgf::Maybe PGF,concs::Map.Map ConcName Concr}
pgfEnv pgf = Env (Just pgf) (languages pgf)
emptyPGFEnv = Env Nothing Map.empty
class (MonadFail m,MonadSIO m) => HasPGFEnv m where getPGFEnv :: m PGFEnv
class (Fail.MonadFail m,MonadSIO m) => HasPGFEnv m where getPGFEnv :: m PGFEnv
instance (Monad m,HasPGFEnv m) => TypeCheckArg m where
typeCheckArg e = do env <- getPGFEnv