| Safe Haskell | Safe-Infered |
|---|
DDC.Core.Transform.SubstituteWX
Description
Capture avoiding substitution of witnesses in expressions.
If a binder would capture a variable then it is anonymized to deBruijn form.
- class SubstituteWX c where
- substituteWithWX :: forall n. Ord n => Witness n -> Sub n -> c n -> c n
- substituteWX :: (Ord n, SubstituteWX c) => Bind n -> Witness n -> c n -> c n
- substituteWXs :: (Ord n, SubstituteWX c) => [(Bind n, Witness n)] -> c n -> c n
Documentation
class SubstituteWX c whereSource
Methods
substituteWithWX :: forall n. Ord n => Witness n -> Sub n -> c n -> c nSource
Substitute a witness into some thing. In the target, if we find a named binder that would capture a free variable in the type to substitute, then we rewrite that binder to anonymous form, avoiding the capture.
Instances
substituteWX :: (Ord n, SubstituteWX c) => Bind n -> Witness n -> c n -> c nSource
Wrapper for substituteWithW that determines the set of free names in the
type being substituted, and starts with an empty binder stack.
substituteWXs :: (Ord n, SubstituteWX c) => [(Bind n, Witness n)] -> c n -> c nSource
Wrapper for substituteW to substitute multiple things.