feat: reference inputs in transaction interface

Signed-off-by: Chris Gianelloni <wolf31o2@blinklabs.io>

ledger/allegra.go

@@ -149,6 +149,10 @@ func (t AllegraTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t AllegraTransaction) ReferenceInputs() []TransactionInput {
+	return t.Body.ReferenceInputs()
+}
+
 func (t AllegraTransaction) Metadata() *cbor.Value {
 	return t.TxMetadata
 }

ledger/alonzo.go

@@ -251,6 +251,10 @@ func (t AlonzoTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t AlonzoTransaction) ReferenceInputs() []TransactionInput {
+	return t.Body.ReferenceInputs()
+}
+
 func (t AlonzoTransaction) Metadata() *cbor.Value {
 	return t.TxMetadata
 }

ledger/babbage.go

@@ -175,10 +175,10 @@ func (h *BabbageBlockHeader) Era() Era {
 
 type BabbageTransactionBody struct {
 	AlonzoTransactionBody
-	TxOutputs        []BabbageTransactionOutput `cbor:"1,keyasint,omitempty"`
-	CollateralReturn BabbageTransactionOutput   `cbor:"16,keyasint,omitempty"`
-	TotalCollateral  uint64                     `cbor:"17,keyasint,omitempty"`
-	ReferenceInputs  []ShelleyTransactionInput  `cbor:"18,keyasint,omitempty"`
+	TxOutputs         []BabbageTransactionOutput `cbor:"1,keyasint,omitempty"`
+	CollateralReturn  BabbageTransactionOutput   `cbor:"16,keyasint,omitempty"`
+	TotalCollateral   uint64                     `cbor:"17,keyasint,omitempty"`
+	TxReferenceInputs []ShelleyTransactionInput  `cbor:"18,keyasint,omitempty"`
 }
 
 func (b *BabbageTransactionBody) UnmarshalCBOR(cborData []byte) error {
@@ -194,6 +194,15 @@ func (b *BabbageTransactionBody) Outputs() []TransactionOutput {
 	return ret
 }
 
+func (b *BabbageTransactionBody) ReferenceInputs() []TransactionInput {
+	ret := []TransactionInput{}
+	for _, input := range b.TxReferenceInputs {
+		input := input
+		ret = append(ret, &input)
+	}
+	return ret
+}
+
 const (
 	DatumOptionTypeHash = 0
 	DatumOptionTypeData = 1
@@ -375,6 +384,10 @@ func (t BabbageTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t BabbageTransaction) ReferenceInputs() []TransactionInput {
+	return t.Body.ReferenceInputs()
+}
+
 func (t BabbageTransaction) Metadata() *cbor.Value {
 	return t.TxMetadata
 }

ledger/byron.go

@@ -153,6 +153,11 @@ func (t *ByronTransaction) TTL() uint64 {
 	return 0
 }
 
+func (t *ByronTransaction) ReferenceInputs() []TransactionInput {
+	// TODO
+	return nil
+}
+
 func (t *ByronTransaction) Metadata() *cbor.Value {
 	return t.Attributes
 }

ledger/conway.go

@@ -160,6 +160,10 @@ func (t ConwayTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t ConwayTransaction) ReferenceInputs() []TransactionInput {
+	return t.Body.ReferenceInputs()
+}
+
 func (t ConwayTransaction) Metadata() *cbor.Value {
 	return t.TxMetadata
 }

ledger/mary.go

@@ -160,6 +160,10 @@ func (t MaryTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t MaryTransaction) ReferenceInputs() []TransactionInput {
+	return t.Body.ReferenceInputs()
+}
+
 func (t MaryTransaction) Metadata() *cbor.Value {
 	return t.TxMetadata
 }

ledger/shelley.go

@@ -217,6 +217,10 @@ func (b *ShelleyTransactionBody) TTL() uint64 {
 	return b.Ttl
 }
 
+func (b *ShelleyTransactionBody) ReferenceInputs() []TransactionInput {
+	return []TransactionInput{}
+}
+
 func (b *ShelleyTransactionBody) Utxorpc() *utxorpc.Tx {
 	var txi []*utxorpc.TxInput
 	var txo []*utxorpc.TxOutput
@@ -351,6 +355,10 @@ func (t ShelleyTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t ShelleyTransaction) ReferenceInputs() []TransactionInput {
+	return t.Body.ReferenceInputs()
+}
+
 func (t ShelleyTransaction) Metadata() *cbor.Value {
 	return t.TxMetadata
 }

ledger/tx.go

@@ -37,6 +37,7 @@ type TransactionBody interface {
 	Inputs() []TransactionInput
 	Outputs() []TransactionOutput
 	TTL() uint64
+	ReferenceInputs() []TransactionInput
 	Utxorpc() *utxorpc.Tx
 }