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Fix type checker

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This commit is contained in:
Martin Fredin 2023-04-03 09:24:27 +02:00
parent cc5755c3a9
commit 0d6c5920a9
1 changed files with 13 additions and 4 deletions
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17
src/TypeChecker/TypeCheckerBidir.hs
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@ -12,18 +12,18 @@ import Control.Applicative (Alternative, Applicative (liftA2),
import Control.Monad.Except (ExceptT, MonadError (throwError),
liftEither, runExceptT, unless,
zipWithM, zipWithM_)
import Control.Monad.State (MonadState (get, put), State,
evalState, gets, modify)
import Control.Monad.State (MonadState, State, evalState, gets,
modify)
import Data.Coerce (coerce)
import Data.Foldable (foldrM)
import Data.Function (on)
import Data.List (intercalate, partition)
import Data.List.Extra (allSame)
import Data.Map (Map)
import qualified Data.Map as Map
import Data.Maybe (fromMaybe, isNothing)
import Data.Sequence (Seq (..))
import qualified Data.Sequence as S
import qualified Data.Set as Set
import Data.Tuple.Extra (second, secondM)
import Debug.Trace (trace)
import Grammar.Abs
@ -72,11 +72,20 @@ initCxt defs = Cxt
| DBind' name vars rhs <- defs
]
, next_tevar = 0
, data_injs = Map.fromList [ (name, t)
, data_injs = Map.fromList [ (name, foldr TAll t $ unboundedTVars t)
| DData (Data _ injs) <- defs
, Inj name t <- injs
]
}
where
unboundedTVars = uncurry (Set.\\) . go (mempty, mempty)
where
go (unbounded, bounded) = \case
TAll tvar t -> go (unbounded, Set.insert tvar bounded) t
TVar tvar -> (Set.insert tvar unbounded, bounded)
TFun t1 t2 -> foldl go (unbounded, bounded) [t1, t2]
TData _ typs -> foldl go (unbounded, bounded) typs
_ -> (unbounded, bounded)
typecheck :: Program -> Err (T.Program' Type)
typecheck (Program defs) = do