Safe Haskell	Safe-Inferred
Language	Haskell2010

Unison.KindInference.Generate.Monad

Synopsis

newtype Gen v loc a = Gen {
- unGen :: StateT (GenState v loc) (Except (GenError loc)) a
}
data GenState v loc = GenState {
- unifVars :: !(Set Symbol)
- typeMap :: !(Map (Type v loc) (NonEmpty (UVar v loc)))
- newVars :: [UVar v loc]
}
data GenError loc = MissingBuiltin loc Reference
type GeneratedConstraint v loc = Constraint (UVar v loc) v loc Provenance
run :: Gen v loc a -> GenState v loc -> Either (GenError loc) (a, GenState v loc)
freshVar :: Var v => Type v loc -> Gen v loc (UVar v loc)
pushType :: Var v => Type v loc -> Gen v loc (UVar v loc)
popType :: Var v => Type v loc -> Gen v loc ()
scopedType :: Var v => Type v loc -> (UVar v loc -> Gen v loc r) -> Gen v loc r
lookupType :: Var v => Type v loc -> Gen v loc (Maybe (UVar v loc))

Documentation

newtype Gen v loc a Source #

Constructors

Gen
Fields unGen :: StateT (GenState v loc) (Except (GenError loc)) a

Instances details

MonadError (GenError loc) (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods throwError :: GenError loc -> Gen v loc a # catchError :: Gen v loc a -> (GenError loc -> Gen v loc a) -> Gen v loc a #
Applicative (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods pure :: a -> Gen v loc a # (<>) :: Gen v loc (a -> b) -> Gen v loc a -> Gen v loc b # liftA2 :: (a -> b -> c) -> Gen v loc a -> Gen v loc b -> Gen v loc c # (>) :: Gen v loc a -> Gen v loc b -> Gen v loc b # (<*) :: Gen v loc a -> Gen v loc b -> Gen v loc a #
Functor (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods fmap :: (a -> b) -> Gen v loc a -> Gen v loc b # (<$) :: a -> Gen v loc b -> Gen v loc a #
Monad (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods (>>=) :: Gen v loc a -> (a -> Gen v loc b) -> Gen v loc b # (>>) :: Gen v loc a -> Gen v loc b -> Gen v loc b # return :: a -> Gen v loc a #
MonadState (GenState v loc) (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods get :: Gen v loc (GenState v loc) # put :: GenState v loc -> Gen v loc () # state :: (GenState v loc -> (a, GenState v loc)) -> Gen v loc a #

The Gen monad state

Constructors

GenState
Fields unifVars :: !(Set Symbol) typeMap :: !(Map (Type v loc) (NonEmpty (UVar v loc))) newVars :: [UVar v loc]

Instances details

Generic (GenState v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Associated Types type Rep (GenState v loc) :: Type -> Type # Methods from :: GenState v loc -> Rep (GenState v loc) x # to :: Rep (GenState v loc) x -> GenState v loc #
MonadState (GenState v loc) (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods get :: Gen v loc (GenState v loc) # put :: GenState v loc -> Gen v loc () # state :: (GenState v loc -> (a, GenState v loc)) -> Gen v loc a #
type Rep (GenState v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad type Rep (GenState v loc) = D1 ('MetaData "GenState" "Unison.KindInference.Generate.Monad" "unison-parser-typechecker-0.0.0-E7FuwoDrRadBVo69eIX64V" 'False) (C1 ('MetaCons "GenState" 'PrefixI 'True) (S1 ('MetaSel ('Just "unifVars") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Set Symbol)) :: (S1 ('MetaSel ('Just "typeMap") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Map (Type v loc) (NonEmpty (UVar v loc)))) :: S1 ('MetaSel ('Just "newVars") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 [UVar v loc]))))

Constructors

Instances details

Show loc => Show (GenError loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods showsPrec :: Int -> GenError loc -> ShowS # show :: GenError loc -> String # showList :: [GenError loc] -> ShowS #
Eq loc => Eq (GenError loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods (==) :: GenError loc -> GenError loc -> Bool # (/=) :: GenError loc -> GenError loc -> Bool #
MonadError (GenError loc) (Gen v loc) Source #
Instance details Defined in Unison.KindInference.Generate.Monad Methods throwError :: GenError loc -> Gen v loc a # catchError :: Gen v loc a -> (GenError loc -> Gen v loc a) -> Gen v loc a #

A generated constraint

run :: Gen v loc a -> GenState v loc -> Either (GenError loc) (a, GenState v loc) Source #

Gen monad runner

freshVar :: Var v => Type v loc -> Gen v loc (UVar v loc) Source #

Create a unique UVar associated with typ

pushType :: Var v => Type v loc -> Gen v loc (UVar v loc) Source #

Associate a fresh UVar with t, push onto context

popType :: Var v => Type v loc -> Gen v loc () Source #

Remove a Type from the context

scopedType :: Var v => Type v loc -> (UVar v loc -> Gen v loc r) -> Gen v loc r Source #

Helper to run an action with the given Type in the context

lookupType :: Var v => Type v loc -> Gen v loc (Maybe (UVar v loc)) Source #

Lookup the UVar associated with a Type