Portability | non-portable (GHC Extensions) |
---|---|
Stability | experimental |
Maintainer | Patrick Bahr <paba@diku.dk> |
Safe Haskell | None |
This module defines annotations on signatures. All definitions are generalised versions of those in Data.Comp.Annotation.
- data (f :&: a) g e = (f g e) :&: a
- class DistAnn s p s' | s' -> s, s' -> p where
- class RemA s s' | s -> s' where
- liftA :: RemA s s' => (s' a :-> t) -> s a :-> t
- ann :: (DistAnn f p g, HFunctor f) => p -> CxtFun f g
- liftA' :: (DistAnn s' p s, HFunctor s') => (s' a :-> Cxt h s' a) -> s a :-> Cxt h s a
- stripA :: (RemA g f, HFunctor g) => CxtFun g f
- propAnn :: (DistAnn f p f', DistAnn g p g', HFunctor g) => Hom f g -> Hom f' g'
- project' :: forall s s' f h a i. (RemA s s', s :<: f) => Cxt h f a i -> Maybe (s' (Cxt h f a) i)
Documentation
This data type adds a constant product to a signature. Alternatively, this could have also been defined as
data (f :&: a) (g :: * -> *) e = f g e :&: a e
This is too general, however, for example for productHHom
.
(f g e) :&: a |
DistAnn f p (:&: f p) | |
HFunctor f => HFunctor (:&: f a) | |
(HFunctor (:&: f a), HFoldable f) => HFoldable (:&: f a) | |
(HFoldable (:&: f a), HTraversable f) => HTraversable (:&: f a) | |
(ShowHF f, Show p) => ShowHF (:&: f p) | |
RemA (:&: f p) f | |
DistAnn s p s' => DistAnn (:+: f s) p (:+: (:&: f p) s') | |
RemA s s' => RemA (:+: (:&: f p) s) (:+: f s') |
class DistAnn s p s' | s' -> s, s' -> p whereSource
This class defines how to distribute an annotation over a sum of signatures.
liftA :: RemA s s' => (s' a :-> t) -> s a :-> tSource
This function transforms a function with a domain constructed from a functor to a function with a domain constructed with the same functor but with an additional annotation.
ann :: (DistAnn f p g, HFunctor f) => p -> CxtFun f gSource
This function annotates each sub term of the given term with the given value (of type a).
liftA' :: (DistAnn s' p s, HFunctor s') => (s' a :-> Cxt h s' a) -> s a :-> Cxt h s aSource
This function transforms a function with a domain constructed from a functor to a function with a domain constructed with the same functor but with an additional annotation.