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Cardano.Api.Tx.UTxO: add txOutputs, toShelleyUTxO, fromShelleyUTxO #812

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Merged
carbolymer merged 2 commits into from
Apr 14, 2025
Merged

Cardano.Api.Tx.UTxO: add txOutputs, toShelleyUTxO, fromShelleyUTxO #812

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78f8d9b
Cardano.Api.Tx.UTxO: add txOutputs function
Apr 13, 2025
259c840
Add toShelleyUTxO and fromShelleyUTxO functions
Apr 14, 2025
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36 changes: 34 additions & 2 deletions cardano-api/src/Cardano/Api/Internal/Tx/UTxO.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,12 +6,24 @@

module Cardano.Api.Internal.Tx.UTxO where

import Cardano.Api.Internal.Eon.ShelleyBasedEra (IsShelleyBasedEra)
import Cardano.Api.Internal.Eon.ShelleyBasedEra
( IsShelleyBasedEra
, ShelleyBasedEra
, ShelleyLedgerEra
)
import Cardano.Api.Internal.Eras.Core (IsCardanoEra)
import Cardano.Api.Internal.Tx.Body (CtxUTxO, TxOut (..))
import Cardano.Api.Internal.Tx.Body
( CtxUTxO
, TxOut (..)
, fromShelleyTxIn
, fromShelleyTxOut
, toShelleyTxIn
, toShelleyTxOut
)
import Cardano.Api.Internal.TxIn (TxIn (..))

import Cardano.Ledger.Babbage ()
import Cardano.Ledger.Shelley.UTxO qualified as Ledger

import Data.Aeson (FromJSON (..), ToJSON (..))
import Data.Aeson qualified as Aeson
Expand Down Expand Up @@ -74,6 +86,10 @@ filterWithKey fn = UTxO . Map.filterWithKey fn . unUTxO
inputSet :: UTxO era -> Set TxIn
inputSet = Map.keysSet . unUTxO

-- | Get the UTxO output set.
txOutputs :: UTxO era -> [TxOut CtxUTxO era]
txOutputs = Map.elems . unUTxO

-- | Remove the right hand side from the left hand side.
difference :: UTxO era -> UTxO era -> UTxO era
difference a b = UTxO $ Map.difference (unUTxO a) (unUTxO b)
Expand All @@ -85,3 +101,19 @@ fromList = UTxO . Map.fromList
-- | Convert to a list of key/value pairs.
toList :: UTxO era -> [(TxIn, TxOut CtxUTxO era)]
toList (UTxO xs) = Map.toList xs

-- | Convert from a `cardano-api` `UTxO` to a `cardano-ledger` UTxO.
toShelleyUTxO :: ShelleyBasedEra era -> UTxO era -> Ledger.UTxO (ShelleyLedgerEra era)
toShelleyUTxO sbe =
Ledger.UTxO . Map.foldMapWithKey f . unUTxO
where
f i o =
Map.singleton (toShelleyTxIn i) (toShelleyTxOut sbe o)

-- | Convert from a `cardano-ledger` `UTxO` to a `cardano-api` UTxO.
fromShelleyUTxO :: ShelleyBasedEra era -> Ledger.UTxO (ShelleyLedgerEra era) -> UTxO era
fromShelleyUTxO sbe =
UTxO . Map.foldMapWithKey f . Ledger.unUTxO
where
f i o =
Map.singleton (fromShelleyTxIn i) (fromShelleyTxOut sbe o)
3 changes: 3 additions & 0 deletions cardano-api/src/Cardano/Api/Tx/UTxO.hs
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Expand Up @@ -6,9 +6,12 @@ module Cardano.Api.Tx.UTxO
, UTxO.filter
, UTxO.filterWithKey
, UTxO.inputSet
, UTxO.txOutputs
, UTxO.difference
, UTxO.fromList
, UTxO.toList
, UTxO.fromShelleyUTxO
, UTxO.toShelleyUTxO
)
where

Expand Down
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