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module Context where
import Data.List
import Control.Alternative
type Label = String
data State a = State [a]
data Context a = Context [Decl] a
instance Functor Context where
fmap f (Context state x) = Context (f x) state
getLabel :: Declaration a => State a -> Label -> Maybe a
getLabel (State decls) l = find (label . (l ==)) decls
class Declaration a where
label :: a -> Label
-- value for variable
-- partial expression where the only variable left is the argument
resolve :: a -> State -> b
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