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43 lines
1.0 KiB
Idris
43 lines
1.0 KiB
Idris
import Stuff
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data Usage = Once | Many
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data Unrestricted : Type -> Type where
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Un : (x : a) -> Unrestricted a
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data Use : Usage -> (Type -> Type) -> Type -> Type where
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MkUse : m a -> Use l m a
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contType : (Type -> Type) -> Usage -> Usage -> Type -> Type -> Type
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contType m Once q a b = ((1 x : a) -> Use q m b)
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contType m Many q a b = ((x : a) -> Use q m b)
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(>>=) : (1 f : Use p m a) -> (1 k : contType m p q a b) -> Use q m b
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pure : a -> Use u m a
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One : (Type -> Type) -> Type -> Type
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One = Use Once
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Any : (Type -> Type) -> Type -> Type
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Any = Use Many
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data DoorState = Open | Closed
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data Door : DoorState -> Type where
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MkDoor : (isOpen : Bool) -> Door doorstate
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newDoor : One m (Door Closed)
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knock : (1 d : Door Closed) -> One m (Door Closed)
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openDoor : (1 d : Door Closed) -> One m (Either (Door Closed) (Door Open))
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closeDoor : (1 d : Door Open) -> One m (Door Closed)
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deleteDoor : (1 d : Door Closed) -> Any m ()
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doorProg : Any m ()
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doorProg
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= do d <- newDoor
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Right d' <- openDoor d
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| Left d => deleteDoor d
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?foo
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