Agda-2.6.1.3: A dependently typed functional programming language and proof assistant
Safe HaskellNone
LanguageHaskell2010

Agda.Utils.Except

Description

Wrapper for Control.Monad.Except from the mtl library (>= 2.2.1)

Synopsis

Documentation

class Error a where Source #

Error class for backward compatibility (from Control.Monad.Trans.Error in transformers 0.3.0.0).

Minimal complete definition

Nothing

Methods

noMsg :: a Source #

strMsg :: String -> a Source #

Instances

Instances details
Error String Source #

A string can be thrown as an error.

Instance details

Defined in Agda.Utils.Except

Error TCErr Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

data ExceptT e (m :: Type -> Type) a #

A monad transformer that adds exceptions to other monads.

ExceptT constructs a monad parameterized over two things:

  • e - The exception type.
  • m - The inner monad.

The return function yields a computation that produces the given value, while >>= sequences two subcomputations, exiting on the first exception.

Instances

Instances details
MonadRWS r w s m => MonadRWS r w s (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.RWS.Class

MonadEquiv c v d m => MonadEquiv c v d (ExceptT e m) 
Instance details

Defined in Data.Equivalence.Monad

Methods

equivalent :: v -> v -> ExceptT e m Bool

classDesc :: v -> ExceptT e m d

equateAll :: [v] -> ExceptT e m ()

equate :: v -> v -> ExceptT e m ()

removeClass :: v -> ExceptT e m Bool

getClass :: v -> ExceptT e m c

combineAll :: [c] -> ExceptT e m ()

combine :: c -> c -> ExceptT e m c

(===) :: c -> c -> ExceptT e m Bool

desc :: c -> ExceptT e m d

remove :: c -> ExceptT e m Bool

Conversion MOT (Exp O) Type Source # 
Instance details

Defined in Agda.Auto.Convert

Methods

convert :: Exp O -> MOT Type Source #

Conversion MOT (Exp O) Term Source # 
Instance details

Defined in Agda.Auto.Convert

Methods

convert :: Exp O -> MOT Term Source #

Conversion MOT a b => Conversion MOT (Abs a) (Abs b) Source # 
Instance details

Defined in Agda.Auto.Convert

Methods

convert :: Abs0 a -> MOT (Abs b) Source #

MonadWriter w m => MonadWriter w (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.Writer.Class

Methods

writer :: (a, w) -> ExceptT e m a #

tell :: w -> ExceptT e m () #

listen :: ExceptT e m a -> ExceptT e m (a, w) #

pass :: ExceptT e m (a, w -> w) -> ExceptT e m a #

MonadState s m => MonadState s (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.State.Class

Methods

get :: ExceptT e m s #

put :: s -> ExceptT e m () #

state :: (s -> (a, s)) -> ExceptT e m a #

MonadReader r m => MonadReader r (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: ExceptT e m r #

local :: (r -> r) -> ExceptT e m a -> ExceptT e m a #

reader :: (r -> a) -> ExceptT e m a #

Monad m => MonadError e (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> ExceptT e m a #

catchError :: ExceptT e m a -> (e -> ExceptT e m a) -> ExceptT e m a #

Conversion MOT a b => Conversion MOT (MM a (RefInfo O)) b Source # 
Instance details

Defined in Agda.Auto.Convert

Methods

convert :: MM a (RefInfo O) -> MOT b Source #

MonadTrans (ExceptT e) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

lift :: Monad m => m a -> ExceptT e m a #

Monad m => Monad (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

(>>=) :: ExceptT e m a -> (a -> ExceptT e m b) -> ExceptT e m b #

(>>) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m b #

return :: a -> ExceptT e m a #

Functor m => Functor (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

fmap :: (a -> b) -> ExceptT e m a -> ExceptT e m b #

(<$) :: a -> ExceptT e m b -> ExceptT e m a #

MonadFix m => MonadFix (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

mfix :: (a -> ExceptT e m a) -> ExceptT e m a #

MonadFail m => MonadFail (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

fail :: String -> ExceptT e m a #

(Functor m, Monad m) => Applicative (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

pure :: a -> ExceptT e m a #

(<*>) :: ExceptT e m (a -> b) -> ExceptT e m a -> ExceptT e m b #

liftA2 :: (a -> b -> c) -> ExceptT e m a -> ExceptT e m b -> ExceptT e m c #

(*>) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m b #

(<*) :: ExceptT e m a -> ExceptT e m b -> ExceptT e m a #

Foldable f => Foldable (ExceptT e f) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

fold :: Monoid m => ExceptT e f m -> m #

foldMap :: Monoid m => (a -> m) -> ExceptT e f a -> m #

foldMap' :: Monoid m => (a -> m) -> ExceptT e f a -> m #

foldr :: (a -> b -> b) -> b -> ExceptT e f a -> b #

foldr' :: (a -> b -> b) -> b -> ExceptT e f a -> b #

foldl :: (b -> a -> b) -> b -> ExceptT e f a -> b #

foldl' :: (b -> a -> b) -> b -> ExceptT e f a -> b #

foldr1 :: (a -> a -> a) -> ExceptT e f a -> a #

foldl1 :: (a -> a -> a) -> ExceptT e f a -> a #

toList :: ExceptT e f a -> [a] #

null :: ExceptT e f a -> Bool #

length :: ExceptT e f a -> Int #

elem :: Eq a => a -> ExceptT e f a -> Bool #

maximum :: Ord a => ExceptT e f a -> a #

minimum :: Ord a => ExceptT e f a -> a #

sum :: Num a => ExceptT e f a -> a #

product :: Num a => ExceptT e f a -> a #

Traversable f => Traversable (ExceptT e f) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

traverse :: Applicative f0 => (a -> f0 b) -> ExceptT e f a -> f0 (ExceptT e f b) #

sequenceA :: Applicative f0 => ExceptT e f (f0 a) -> f0 (ExceptT e f a) #

mapM :: Monad m => (a -> m b) -> ExceptT e f a -> m (ExceptT e f b) #

sequence :: Monad m => ExceptT e f (m a) -> m (ExceptT e f a) #

Contravariant m => Contravariant (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

contramap :: (a -> b) -> ExceptT e m b -> ExceptT e m a #

(>$) :: b -> ExceptT e m b -> ExceptT e m a #

(Eq e, Eq1 m) => Eq1 (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

liftEq :: (a -> b -> Bool) -> ExceptT e m a -> ExceptT e m b -> Bool #

(Ord e, Ord1 m) => Ord1 (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

liftCompare :: (a -> b -> Ordering) -> ExceptT e m a -> ExceptT e m b -> Ordering #

(Read e, Read1 m) => Read1 (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

liftReadsPrec :: (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (ExceptT e m a) #

liftReadList :: (Int -> ReadS a) -> ReadS [a] -> ReadS [ExceptT e m a] #

liftReadPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec (ExceptT e m a) #

liftReadListPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec [ExceptT e m a] #

(Show e, Show1 m) => Show1 (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

liftShowsPrec :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> ExceptT e m a -> ShowS #

liftShowList :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> [ExceptT e m a] -> ShowS #

MonadZip m => MonadZip (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

mzip :: ExceptT e m a -> ExceptT e m b -> ExceptT e m (a, b) #

mzipWith :: (a -> b -> c) -> ExceptT e m a -> ExceptT e m b -> ExceptT e m c #

munzip :: ExceptT e m (a, b) -> (ExceptT e m a, ExceptT e m b) #

MonadIO m => MonadIO (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

liftIO :: IO a -> ExceptT e m a #

(Functor m, Monad m, Monoid e) => Alternative (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

empty :: ExceptT e m a #

(<|>) :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a #

some :: ExceptT e m a -> ExceptT e m [a] #

many :: ExceptT e m a -> ExceptT e m [a] #

(Monad m, Monoid e) => MonadPlus (ExceptT e m) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

mzero :: ExceptT e m a #

mplus :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a #

MonadThrow m => MonadThrow (ExceptT e m)

Throws exceptions into the base monad.

Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e0 => e0 -> ExceptT e m a #

MonadCatch m => MonadCatch (ExceptT e m)

Catches exceptions from the base monad.

Instance details

Defined in Control.Monad.Catch

Methods

catch :: Exception e0 => ExceptT e m a -> (e0 -> ExceptT e m a) -> ExceptT e m a #

MonadMask m => MonadMask (ExceptT e m)

Since: exceptions-0.9.0

Instance details

Defined in Control.Monad.Catch

Methods

mask :: ((forall a. ExceptT e m a -> ExceptT e m a) -> ExceptT e m b) -> ExceptT e m b #

uninterruptibleMask :: ((forall a. ExceptT e m a -> ExceptT e m a) -> ExceptT e m b) -> ExceptT e m b #

generalBracket :: ExceptT e m a -> (a -> ExitCase b -> ExceptT e m c) -> (a -> ExceptT e m b) -> ExceptT e m (b, c) #

MonadTCM tcm => MonadTCM (ExceptT err tcm) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

liftTCM :: TCM a -> ExceptT err tcm a Source #

MonadTCState m => MonadTCState (ExceptT err m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

getTC :: ExceptT err m TCState Source #

putTC :: TCState -> ExceptT err m () Source #

modifyTC :: (TCState -> TCState) -> ExceptT err m () Source #

MonadTCEnv m => MonadTCEnv (ExceptT err m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

askTC :: ExceptT err m TCEnv Source #

localTC :: (TCEnv -> TCEnv) -> ExceptT err m a -> ExceptT err m a Source #

MonadReduce m => MonadReduce (ExceptT err m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

liftReduce :: ReduceM a -> ExceptT err m a Source #

HasOptions m => HasOptions (ExceptT e m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

ReadTCState m => ReadTCState (ExceptT err m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

getTCState :: ExceptT err m TCState Source #

locallyTCState :: Lens' a TCState -> (a -> a) -> ExceptT err m b -> ExceptT err m b Source #

withTCState :: (TCState -> TCState) -> ExceptT err m a -> ExceptT err m a Source #

PrimMonad m => PrimMonad (ExceptT e m) 
Instance details

Defined in Control.Monad.Primitive

Associated Types

type PrimState (ExceptT e m)

Methods

primitive :: (State# (PrimState (ExceptT e m)) -> (# State# (PrimState (ExceptT e m)), a #)) -> ExceptT e m a

MonadAddContext m => MonadAddContext (ExceptT e m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Context

Methods

addCtx :: Name -> Dom Type -> ExceptT e m a -> ExceptT e m a Source #

addLetBinding' :: Name -> Term -> Dom Type -> ExceptT e m a -> ExceptT e m a Source #

updateContext :: Substitution -> (Context -> Context) -> ExceptT e m a -> ExceptT e m a Source #

withFreshName :: Range -> ArgName -> (Name -> ExceptT e m a) -> ExceptT e m a Source #

HasBuiltins m => HasBuiltins (ExceptT e m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Builtin

MonadDebug m => MonadDebug (ExceptT e m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Debug

MonadStatistics m => MonadStatistics (ExceptT e m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Statistics

Methods

modifyCounter :: String -> (Integer -> Integer) -> ExceptT e m () Source #

HasConstInfo m => HasConstInfo (ExceptT err m) Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Signature

(Eq e, Eq1 m, Eq a) => Eq (ExceptT e m a) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

(==) :: ExceptT e m a -> ExceptT e m a -> Bool #

(/=) :: ExceptT e m a -> ExceptT e m a -> Bool #

(Ord e, Ord1 m, Ord a) => Ord (ExceptT e m a) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

compare :: ExceptT e m a -> ExceptT e m a -> Ordering #

(<) :: ExceptT e m a -> ExceptT e m a -> Bool #

(<=) :: ExceptT e m a -> ExceptT e m a -> Bool #

(>) :: ExceptT e m a -> ExceptT e m a -> Bool #

(>=) :: ExceptT e m a -> ExceptT e m a -> Bool #

max :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a #

min :: ExceptT e m a -> ExceptT e m a -> ExceptT e m a #

(Read e, Read1 m, Read a) => Read (ExceptT e m a) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

readsPrec :: Int -> ReadS (ExceptT e m a) #

readList :: ReadS [ExceptT e m a] #

readPrec :: ReadPrec (ExceptT e m a) #

readListPrec :: ReadPrec [ExceptT e m a] #

(Show e, Show1 m, Show a) => Show (ExceptT e m a) 
Instance details

Defined in Control.Monad.Trans.Except

Methods

showsPrec :: Int -> ExceptT e m a -> ShowS #

show :: ExceptT e m a -> String #

showList :: [ExceptT e m a] -> ShowS #

type PrimState (ExceptT e m) 
Instance details

Defined in Control.Monad.Primitive

type PrimState (ExceptT e m) = PrimState m

mapExceptT :: (m (Either e a) -> n (Either e' b)) -> ExceptT e m a -> ExceptT e' n b #

Map the unwrapped computation using the given function.

mkExceptT :: m (Either e a) -> ExceptT e m a Source #

We cannot define data constructors synonymous, so we define the mkExceptT function to be used instead of the data constructor ExceptT.

class Monad m => MonadError e (m :: Type -> Type) | m -> e where #

The strategy of combining computations that can throw exceptions by bypassing bound functions from the point an exception is thrown to the point that it is handled.

Is parameterized over the type of error information and the monad type constructor. It is common to use Either String as the monad type constructor for an error monad in which error descriptions take the form of strings. In that case and many other common cases the resulting monad is already defined as an instance of the MonadError class. You can also define your own error type and/or use a monad type constructor other than Either String or Either IOError. In these cases you will have to explicitly define instances of the MonadError class. (If you are using the deprecated Control.Monad.Error or Control.Monad.Trans.Error, you may also have to define an Error instance.)

Methods

throwError :: e -> m a #

Is used within a monadic computation to begin exception processing.

catchError :: m a -> (e -> m a) -> m a #

A handler function to handle previous errors and return to normal execution. A common idiom is:

do { action1; action2; action3 } `catchError` handler

where the action functions can call throwError. Note that handler and the do-block must have the same return type.

Instances

Instances details
MonadError () Maybe

Since: mtl-2.2.2

Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: () -> Maybe a #

catchError :: Maybe a -> (() -> Maybe a) -> Maybe a #

MonadError IOException IO 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: IOException -> IO a #

catchError :: IO a -> (IOException -> IO a) -> IO a #

MonadError TCErr TCM Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

throwError :: TCErr -> TCM a #

catchError :: TCM a -> (TCErr -> TCM a) -> TCM a #

MonadError TCErr IM Source # 
Instance details

Defined in Agda.TypeChecking.Monad.Base

Methods

throwError :: TCErr -> IM a #

catchError :: IM a -> (TCErr -> IM a) -> IM a #

MonadError TCErr TerM Source # 
Instance details

Defined in Agda.Termination.Monad

Methods

throwError :: TCErr -> TerM a #

catchError :: TerM a -> (TCErr -> TerM a) -> TerM a #

MonadError ParseError Parser Source # 
Instance details

Defined in Agda.Syntax.Parser.Monad

MonadError ParseError PM Source # 
Instance details

Defined in Agda.Syntax.Parser

Methods

throwError :: ParseError -> PM a #

catchError :: PM a -> (ParseError -> PM a) -> PM a #

MonadError DeclarationException Nice Source # 
Instance details

Defined in Agda.Syntax.Concrete.Definitions

MonadError e m => MonadError e (MaybeT m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> MaybeT m a #

catchError :: MaybeT m a -> (e -> MaybeT m a) -> MaybeT m a #

MonadError e m => MonadError e (ListT m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> ListT m a #

catchError :: ListT m a -> (e -> ListT m a) -> ListT m a #

MonadError e (Either e) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> Either e a #

catchError :: Either e a -> (e -> Either e a) -> Either e a #

MonadError e m => MonadError e (NamesT m) Source # 
Instance details

Defined in Agda.TypeChecking.Names

Methods

throwError :: e -> NamesT m a #

catchError :: NamesT m a -> (e -> NamesT m a) -> NamesT m a #

Monad m => MonadError TCErr (PureConversionT m) Source # 
Instance details

Defined in Agda.TypeChecking.Conversion.Pure

(Monoid w, MonadError e m) => MonadError e (WriterT w m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> WriterT w m a #

catchError :: WriterT w m a -> (e -> WriterT w m a) -> WriterT w m a #

(Monoid w, MonadError e m) => MonadError e (WriterT w m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> WriterT w m a #

catchError :: WriterT w m a -> (e -> WriterT w m a) -> WriterT w m a #

MonadError e m => MonadError e (StateT s m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> StateT s m a #

catchError :: StateT s m a -> (e -> StateT s m a) -> StateT s m a #

MonadError e m => MonadError e (StateT s m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> StateT s m a #

catchError :: StateT s m a -> (e -> StateT s m a) -> StateT s m a #

MonadError e m => MonadError e (ReaderT r m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> ReaderT r m a #

catchError :: ReaderT r m a -> (e -> ReaderT r m a) -> ReaderT r m a #

MonadError e m => MonadError e (IdentityT m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> IdentityT m a #

catchError :: IdentityT m a -> (e -> IdentityT m a) -> IdentityT m a #

Monad m => MonadError e (ExceptT e m)

Since: mtl-2.2

Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> ExceptT e m a #

catchError :: ExceptT e m a -> (e -> ExceptT e m a) -> ExceptT e m a #

(Monad m, Error e) => MonadError e (ErrorT e m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> ErrorT e m a #

catchError :: ErrorT e m a -> (e -> ErrorT e m a) -> ErrorT e m a #

MonadError e m => MonadError e (EquivT s c v m) 
Instance details

Defined in Data.Equivalence.Monad

Methods

throwError :: e -> EquivT s c v m a #

catchError :: EquivT s c v m a -> (e -> EquivT s c v m a) -> EquivT s c v m a #

(Monoid w, MonadError e m) => MonadError e (RWST r w s m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> RWST r w s m a #

catchError :: RWST r w s m a -> (e -> RWST r w s m a) -> RWST r w s m a #

(Monoid w, MonadError e m) => MonadError e (RWST r w s m) 
Instance details

Defined in Control.Monad.Error.Class

Methods

throwError :: e -> RWST r w s m a #

catchError :: RWST r w s m a -> (e -> RWST r w s m a) -> RWST r w s m a #

runExceptT :: ExceptT e m a -> m (Either e a) #

The inverse of ExceptT.