agora/agora/Agora/Effect/NoOp.hs
2022-04-27 12:55:37 +02:00

33 lines
1,014 B
Haskell

{- |
Module : Agora.Effect.NoOp
Maintainer : seungheon.ooh@gmail.com
Description: Dummy dumb dumb effect.
A dumb effect that only burns its GAT.
-}
module Agora.Effect.NoOp (noOpValidator, PNoOp) where
import Control.Applicative (Const)
import Agora.Effect (makeEffect)
import Plutarch.Api.V1 (PValidator)
import Plutarch.TryFrom (PTryFrom (..))
import Plutus.V1.Ledger.Value (CurrencySymbol)
-- | Dummy datum for NoOp effect.
newtype PNoOp (s :: S) = PNoOp (Term s PUnit)
deriving (PlutusType, PIsData) via (DerivePNewtype PNoOp PUnit)
instance PTryFrom PData PNoOp where
type PTryFromExcess PData PNoOp = Const ()
ptryFrom' _ cont =
-- JUSTIFICATION:
-- We don't care anything about data.
-- It should always be reduced to Unit.
cont (pcon $ PNoOp (pconstant ()), ())
-- | Dummy effect which can only burn its GAT.
noOpValidator :: CurrencySymbol -> ClosedTerm PValidator
noOpValidator curr = makeEffect curr $
\_ (_datum :: Term s PNoOp) _ _ -> P.do
popaque (pconstant ())