Transducer.hs

{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE QualifiedDo #-}
{-# LANGUAGE TypeApplications #-}
-- @generated by keiro-dsl 0.8.0.0 (language keiro-dsl 4) from aggregate Page; do not edit.
module Generated.IncidentPaging.Page.Transducer
  ( pageTransducer
  , pageFoldFingerprint
  , BehaviorOwnership (..)
  , pagePredicateVerifications
  ) where

import Generated.IncidentPaging.Page.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

pageTransducer
  :: SymTransducer
       (HsPred PageRegs PageCommand)
       PageRegs
       PageVertex
       PageCommand
       PageEvent
pageTransducer =
  B.buildTransducer PagePending initialPageRegs isTerminal do
    B.from PagePending do
      B.onCmd inCtorSendPage $ \d -> B.do
        B.emit wirePageSent (PageSentTermFields
          { incidentId = d.incidentId
          , responderId = d.responderId
          })
        B.goto PageDelivered
 where
  isTerminal = \case
    PageDelivered -> True
    _ -> False

pageFoldFingerprint :: Text
pageFoldFingerprint = "32a87df625245b05c0307606293a5650"

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.
pagePredicateVerifications :: IO [(Text, BehaviorOwnership, S.PredicateVerification)]
pagePredicateVerifications = sequence
  [ verifyTransition "transition1PendingSendPage" GeneratedOwned PagePending 0
  ]
 where
  verifyTransition label owner source edgeIndex =
    case drop edgeIndex (K.edgesOut pageTransducer source) of
      K.Edge predicate _ _ _ _ : _ -> (\result -> (label, owner, result)) <$> S.verifyPredicate predicate
      [] -> pure (label, owner, S.UnverifiedSolverFailure "generated transition edge missing")