Transducer.hs

{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE QualifiedDo #-}
-- @generated by keiro-dsl 0.18.0.0 (language keiro-dsl 6) from aggregate ReplayLedger; do not edit.
module Generated.CheckedMappingReplay.ReplayLedger.Transducer
  ( replayLedgerTransducer
  , replayLedgerFoldFingerprint
  , BehaviorOwnership (..)
  , replayLedgerPredicateVerifications
  ) where

import Generated.CheckedMappingReplay.ReplayLedger.Domain
import Data.Text (Text)
import Keiki.Builder qualified as B
import Keiki.Core (HsPred, SymTransducer)
import Keiki.Core qualified as K
import Keiki.Symbolic qualified as S
import Keiki.Builder ((=:))

replayLedgerTransducer
  :: SymTransducer
       (HsPred ReplayLedgerRegs ReplayLedgerCommand)
       ReplayLedgerRegs
       ReplayLedgerVertex
       ReplayLedgerCommand
       ReplayLedgerEvent
replayLedgerTransducer =
  B.buildTransducer ReplayLedgerEmpty initialReplayLedgerRegs isTerminal do
    B.from ReplayLedgerEmpty do
      B.onCmd inCtorRecord $ \d -> B.do
        B.slot @"current" =: d.envelope
        B.slot @"currentId" =: d.retainedId
        B.emit wireMappingRecorded (MappingRecordedTermFields
          { retainedId = d.retainedId
          , envelope = d.envelope
          })
        B.emit wireMappingAudited (MappingAuditedTermFields
          { retainedId = d.retainedId
          , envelope = d.envelope
          })
        B.goto ReplayLedgerRecorded
      B.onCmd inCtorImportLegacy $ \d -> B.do
        B.replayOnly
        B.slot @"current" =: d.envelope
        B.slot @"currentId" =: d.retainedId
        B.emit wireLegacyMappingImported (LegacyMappingImportedTermFields
          { retainedId = d.retainedId
          , envelope = d.envelope
          })
        B.goto ReplayLedgerRecorded
 where
  isTerminal = \case
    ReplayLedgerRecorded -> True
    _ -> False

replayLedgerFoldFingerprint :: Text
replayLedgerFoldFingerprint = "e7747e791715d691f98690d59c480ef4"

data BehaviorOwnership = GeneratedOwned | HoleOwned
  deriving stock (Eq, Show)

-- Every checked transition predicate is audited through Keiki's conservative
-- symbolic verifier. Opaque Hole terms remain explicitly unverified.
replayLedgerPredicateVerifications :: IO [(Text, BehaviorOwnership, S.PredicateVerification)]
replayLedgerPredicateVerifications = sequence
  [ verifyTransition "transition1EmptyRecord" GeneratedOwned ReplayLedgerEmpty 0
  , verifyTransition "transition2EmptyImportLegacy" GeneratedOwned ReplayLedgerEmpty 1
  ]
 where
  verifyTransition label owner source edgeIndex =
    case drop edgeIndex (K.edgesOut replayLedgerTransducer source) of
      K.Edge predicate _ _ _ _ : _ -> (\result -> (label, owner, result)) <$> S.verifyPredicate predicate
      [] -> pure (label, owner, S.UnverifiedSolverFailure "generated transition edge missing")