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{-# LANGUAGE UndecidableInstances #-}

module Feldspar.Core.Constructs.Save where



import Language.Syntactic
import Language.Syntactic.Interpretation.Semantics
import Language.Syntactic.Constructs.Binding

import Feldspar.Core.Types
import Feldspar.Core.Interpretation



data Save a
  where
    Save :: Type a => Save (a :-> Full a)

instance WitnessCons Save
  where
    witnessCons Save = ConsWit

instance WitnessSat Save
  where
    type SatContext Save = TypeCtx
    witnessSat Save = SatWit

instance MaybeWitnessSat TypeCtx Save
  where
    maybeWitnessSat = maybeWitnessSatDefault

instance Semantic Save
  where
    semantics Save = Sem "save" id

instance ExprEq   Save where exprEq = exprEqSem; exprHash = exprHashSem
instance Render   Save where renderPart = renderPartSem
instance ToTree   Save
instance Eval     Save where evaluate = evaluateSem
instance EvalBind Save where evalBindSym = evalBindSymDefault
instance Sharable Save

instance AlphaEq dom dom dom env => AlphaEq Save Save dom env
  where
    alphaEqSym = alphaEqSymDefault

instance SizeProp Save
  where
    sizeProp Save (WrapFull a :* Nil) = infoSize a

instance (Save :<: dom, Optimize dom dom) => Optimize Save dom
  where
    constructFeatUnOpt = constructFeatUnOptDefault