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Diffstat (limited to 'src/compiler/GF/Command/Commands2.hs')
| -rw-r--r-- | src/compiler/GF/Command/Commands2.hs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/compiler/GF/Command/Commands2.hs b/src/compiler/GF/Command/Commands2.hs index 344b6b51d..100f877a9 100644 --- a/src/compiler/GF/Command/Commands2.hs +++ b/src/compiler/GF/Command/Commands2.hs @@ -18,6 +18,7 @@ import Data.Maybe import qualified Data.Map as Map import GF.Text.Pretty import Control.Monad(mplus) +import qualified Control.Monad.Fail as Fail data PGFEnv = Env {pgf::Maybe PGF,concs::Map.Map ConcName Concr} @@ -25,7 +26,7 @@ data PGFEnv = Env {pgf::Maybe PGF,concs::Map.Map ConcName Concr} pgfEnv pgf = Env (Just pgf) (languages pgf) emptyPGFEnv = Env Nothing Map.empty -class (Monad 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 |