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--

module Feldspar.Core.Frontend.Binding where

import Language.Syntactic

import Feldspar.Core.Constructs.Binding
import Feldspar.Core.Constructs

-- | Share an expression in the scope of a function
share :: (Syntax a, Syntax b) => a -> (a -> b) -> b
share = sugarSymC Let

-- | Share the intermediate result when composing functions
(.<) :: (Syntax b, Syntax c) => (b -> c) -> (a -> b) -> a -> c
(.<) f g a = share (g a) f

infixr 9 .<

-- | Share an expression in the scope of a function
($<) :: (Syntax a, Syntax b) => (a -> b) -> a -> b
($<) = flip share

infixr 0 $<