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module CC.Name
import public Control.Relation
import Decidable.Equality
import Text.Bounded
import Text.PrettyPrint.Prettyprinter
infix 4 ~~
-- Definitions -----------------------------------------------------------------
||| Names of variables.
export
Name : Type
Name = WithBounds String
%name Name n, m
||| Equivalence relation on names.
export
(~~) : Rel Name
m ~~ n = m.val = n.val
%name (~~) prf
-- Interfaces ------------------------------------------------------------------
export
Interpolation Name where
interpolate n = n.val
export
Pretty Name where
pretty n = pretty n.val
export
Reflexive Name (~~) where
reflexive = Refl
export
Symmetric Name (~~) where
symmetric prf = sym prf
export
Transitive Name (~~) where
transitive prf1 prf2 = trans prf1 prf2
export Equivalence Name (~~) where
-- Operations ------------------------------------------------------------------
||| Constructs a new name from a bounded String.
export
MkName : WithBounds String -> Name
MkName = id
||| Decides if two names are equivalent
export
decEquiv : (m, n : Name) -> Dec (m ~~ n)
decEquiv m n = decEq m.val n.val
||| Returns the bounds of `name`, if any.
export
bounds : (name : Name) -> Maybe Bounds
bounds name = if name.isIrrelevant then Nothing else Just name.bounds
|
