Data.Cursor.CLASE.Language

Documentation

data Up

data Down

type family Invert d :: *

data DirectionT a where

Constructors

UpT :: DirectionT Up
DownT :: DirectionT Down

class Reify l a where

Methods

reify :: a -> TypeRep l a

data ExistsR l r where

Constructors

ExistsR :: Reify l a => r a -> ExistsR l r

class Language l where

Associated Types

data Context l :: * -> * -> *

data Movement l :: * -> * -> * -> *

data TypeRep l :: * -> *

Methods

buildOne :: Context l a b -> a -> b

unbuildOne :: Movement l Down a b -> a -> Maybe (Context l b a, b)

invertMovement :: Movement l d a b -> Movement l (Invert d) b a

movementEq :: Movement l d a b -> Movement l d a c -> Maybe (TyEq b c)

reifyDirection :: Movement l d a b -> DirectionT d

contextToMovement :: Context l a b -> Movement l Up a b

downMoves :: TypeRep l a -> [ExistsR l (Movement l Down a)]

moveLeft :: Movement l Down a x -> Maybe (ExistsR l (Movement l Down a))

moveRight :: Movement l Down a x -> Maybe (ExistsR l (Movement l Down a))

contextMovementEq :: Language l => Context l a b -> Movement l Up a c -> Maybe (TyEq b c)

data Path l r a b where

Constructors

Stop :: Path l r a a
Step :: Reify l b => r a b -> Path l r b c -> Path l r a c

foldPath :: (forall from to. Reify l to => r from to -> from -> to) -> start -> Path l r start finish -> finish

data Cursor l x a

Constructors

Reify l a => Cursor

it :: a
ctx :: Path l (Context l) a l
log :: Route l a x

data CursorWithMovement l d x from where

Constructors

CWM :: Reify l to => Cursor l x to -> Movement l d from to -> CursorWithMovement l d x from

rebuild :: Language l => Cursor l x a -> l

applyMovement :: (Language l, Reify l a, Reify l b) => Movement l d a b -> Cursor l x a -> Maybe (Cursor l x b)

genericMoveUp :: Language l => Cursor l x a -> Maybe (CursorWithMovement l Up x a)

genericMoveDown :: Language l => Cursor l x a -> Maybe (CursorWithMovement l Down x a)

genericMoveLeft :: Language l => Cursor l x a -> Maybe (ExistsR l (Cursor l x))

genericMoveRight :: Language l => Cursor l x a -> Maybe (ExistsR l (Cursor l x))

genericMoveSideways :: forall l x a. Language l => (forall a z. Movement l Down a z -> Maybe (ExistsR l (Movement l Down a))) -> Cursor l x a -> Maybe (ExistsR l (Cursor l x))

moveToRoot :: Language l => Cursor l x a -> Cursor l x l

data Route l from to where

Constructors

Route :: Reify l mid => Path l (Movement l Up) from mid -> Path l (Movement l Down) mid to -> Route l from to

route_invariant :: forall l from to. Language l => Route l from to -> Bool

updateRoute :: (Language l, Reify l a, Reify l b) => Movement l d a b -> Route l a c -> Route l b c

resetLog :: Cursor l x a -> Cursor l a a

appendRoute :: (Language l, Reify l a, Reify l b, Reify l c) => Route l a b -> Route l b c -> Route l a c

followRoute :: Language l => Cursor l x a -> Route l a c -> Maybe (Cursor l x c)

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