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Set ConwayGenesis as TranslationContext for Conway #3368

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Apr 5, 2023
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Set ConwayGenesis as TranslationContext for Conway #3368

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1 change: 1 addition & 0 deletions eras/conway/impl/CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@
* Add `EncCBOR`/`DecCBOR` and `ToCBOR`/`FromCBOR` for `ConwayTallyPredFailure`
* Add `ToCBOR`/`FromCBOR` for `ConwayGovernance`
* Remove `cgAlonzoGenesis` from `ConwayGenesis`.
* Set `ConwayGenesis` as `TranslationContext`

### `testlib`

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9 changes: 5 additions & 4 deletions eras/conway/impl/src/Cardano/Ledger/Conway/Translation.hs
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Expand Up @@ -23,6 +23,7 @@ import Cardano.Ledger.Babbage.TxBody (BabbageTxOut (..), Datum (..))
import Cardano.Ledger.Binary (DecoderError)
import Cardano.Ledger.Conway.Core hiding (Tx)
import Cardano.Ledger.Conway.Era (ConwayEra)
import Cardano.Ledger.Conway.Genesis (ConwayGenesis (..))
import Cardano.Ledger.Conway.Scripts ()
import Cardano.Ledger.Conway.Tx ()
import qualified Cardano.Ledger.Core as Core (Tx)
Expand Down Expand Up @@ -56,7 +57,7 @@ import Lens.Micro
-- being total. Do not change it!
--------------------------------------------------------------------------------

type instance TranslationContext (ConwayEra c) = API.GenDelegs c
type instance TranslationContext (ConwayEra c) = ConwayGenesis c

instance Crypto c => TranslateEra (ConwayEra c) NewEpochState where
translateEra ctxt nes =
Expand Down Expand Up @@ -112,16 +113,16 @@ instance Crypto c => TranslateEra (ConwayEra c) EpochState where
}

instance Crypto c => TranslateEra (ConwayEra c) API.LedgerState where
translateEra newGenDelegs ls =
translateEra conwayGenesis ls =
pure
API.LedgerState
{ API.lsUTxOState = translateEra' newGenDelegs $ API.lsUTxOState ls
{ API.lsUTxOState = translateEra' conwayGenesis $ API.lsUTxOState ls
, API.lsDPState = updateGenesisKeys $ API.lsDPState ls
}
where
updateGenesisKeys (DPState dstate pstate) = DPState dstate' pstate
where
dstate' = dstate {dsGenDelegs = newGenDelegs}
dstate' = dstate {dsGenDelegs = cgGenDelegs conwayGenesis}

instance Crypto c => TranslateEra (ConwayEra c) UTxOState where
translateEra ctxt us =
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8 changes: 6 additions & 2 deletions eras/conway/test-suite/src/Test/Cardano/Ledger/Conway/Examples/Consensus.hs
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Expand Up @@ -32,6 +32,7 @@ import Cardano.Ledger.Coin (Coin (..))
import Cardano.Ledger.Conway (Conway)
import Cardano.Ledger.Conway.Core
import Cardano.Ledger.Conway.Delegation.Certificates (ConwayDCert (..))
import Cardano.Ledger.Conway.Genesis (ConwayGenesis (..))
import Cardano.Ledger.Conway.Rules (ConwayLEDGER)
import Cardano.Ledger.Conway.Translation ()
import Cardano.Ledger.Conway.Tx (AlonzoTx (..))
Expand Down Expand Up @@ -205,5 +206,8 @@ exampleConwayNewEpochState =
emptyPParams
(emptyPParams & ppCoinsPerUTxOByteL .~ CoinPerByte (Coin 1))

exampleConwayGenesis :: GenDelegs c
exampleConwayGenesis = GenDelegs Map.empty
exampleConwayGenesis :: ConwayGenesis c
exampleConwayGenesis =
ConwayGenesis
{ cgGenDelegs = GenDelegs Map.empty
}