clementine_core::builder::transaction

Struct TxHandler

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pub struct TxHandler<T: State = Unsigned> { /* private fields */ }
Expand description

Handler for protocol transactions, wrapping inputs, outputs, and cached transaction data.

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impl<T: State> TxHandler<T>

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pub fn get_spendable_output( &self, vout: UtxoVout, ) -> Result<SpendableTxIn, BridgeError>

Returns a spendable input for the specified output index in this transaction.

§Arguments
  • vout - The protocol-specific output index.
§Returns

A SpendableTxIn for the specified output, or a BridgeError if not found.

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pub fn get_merkle_root_of_txin( &self, idx: usize, ) -> Result<Option<TapNodeHash>, BridgeError>

Returns the Taproot merkle root of the specified input, if available.

§Arguments
  • idx - The input index.
§Returns

The Taproot merkle root, or a BridgeError if not found.

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pub fn get_signature_id(&self, idx: usize) -> Result<SignatureId, BridgeError>

Returns the signature ID for the specified input.

§Arguments
  • idx - The input index.
§Returns

The signature ID, or a BridgeError if not found.

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pub fn get_transaction_type(&self) -> TransactionType

Returns the protocol transaction type for this handler.

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pub fn get_cached_tx(&self) -> &Transaction

Returns a reference to the cached Bitcoin transaction.

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pub fn get_txid(&self) -> &Txid

Returns a reference to the cached transaction ID.

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pub fn sign_txins( &mut self, signer: impl for<'a> FnMut(usize, &'a SpentTxIn, SighashCalculator<'a>) -> Result<Option<Witness>, BridgeError>, ) -> Result<(), BridgeError>

Signs all unsigned transaction inputs using the provided signer function.

This function will skip all transaction inputs that already have a witness.

§Arguments
  • signer - A function that returns an optional witness for transaction inputs or returns an error if the signing fails. The function takes the input idx, input object, and a sighash calculator closure.
§Returns
  • Ok(()) if signing is successful
  • Err(BridgeError) if signing fails
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pub fn calculate_pubkey_spend_sighash( &self, txin_index: usize, sighash_type: TapSighashType, ) -> Result<TapSighash, BridgeError>

Calculates the Taproot sighash for a key spend input for the given input and sighash type.

§Arguments
  • txin_index - The input index.
  • sighash_type - The Taproot sighash type.
§Returns

The calculated Taproot sighash, or a BridgeError if calculation fails.

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pub fn calculate_script_spend_sighash_indexed( &self, txin_index: usize, spend_script_idx: usize, sighash_type: TapSighashType, ) -> Result<TapSighash, BridgeError>

Calculates the Taproot sighash for a script spend input by script index.

§Arguments
  • txin_index - The input index.
  • spend_script_idx - The script index in the input’s script list.
  • sighash_type - The Taproot sighash type.
§Returns

The calculated Taproot sighash, or a BridgeError if calculation fails.

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pub fn calculate_script_spend_sighash( &self, txin_index: usize, spend_script: &Script, sighash_type: TapSighashType, ) -> Result<TapSighash, BridgeError>

Calculates the Taproot sighash for a script spend input by script.

§Arguments
  • txin_index - The input index.
  • spend_script - The script being spent.
  • sighash_type - The Taproot sighash type.
§Returns

The calculated Taproot sighash, or a BridgeError if calculation fails.

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pub fn calculate_sighash_txin( &self, txin_index: usize, sighash_type: TapSighashType, ) -> Result<TapSighash, BridgeError>

Calculates the sighash for the specified input, based on its spend path stored inside SpentTxIn.

§Arguments
  • txin_index - The input index.
  • sighash_type - The Taproot sighash type.
§Returns

The calculated Taproot sighash, or a BridgeError if calculation fails.

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pub fn calculate_shared_txins_sighash( &self, needed_entity: EntityType, partial_signature_info: PartialSignatureInfo, ) -> Result<Vec<(TapSighash, SignatureInfo)>, BridgeError>

Calculates sighashes for all shared inputs for a given entity type.

§Arguments
  • needed_entity - The entity type (operator, verifier, etc.).
  • partial_signature_info - Partial signature info for the entity.
§Returns

A vector of (sighash, signature info) pairs, or a BridgeError if calculation fails.

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impl TxHandler<Signed>

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pub fn encode_tx(&self) -> RawSignedTx

Encodes the signed transaction as a raw byte vector.

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impl TxHandler<Unsigned>

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pub fn promote(self) -> Result<TxHandler<Signed>, BridgeError>

Promotes an unsigned handler to a signed handler, checking that all witnesses are present.

§Returns

A TxHandler<Signed> if all witnesses are present, or a BridgeError if not.

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pub fn set_p2tr_script_spend_witness<T: AsRef<[u8]>>( &mut self, script_inputs: &[T], txin_index: usize, script_index: usize, ) -> Result<(), BridgeError>

Sets the witness for a script path spend input.

§Arguments
  • script_inputs - The inputs to the tapscript.
  • txin_index - The input index.
  • script_index - The script index in the input’s script list.
§Returns

Ok(()) if successful, or a BridgeError if not.

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pub fn set_p2tr_key_spend_witness( &mut self, signature: &Signature, txin_index: usize, ) -> Result<(), BridgeError>

Sets the witness for a key path spend input.

§Arguments
  • signature - The Taproot signature.
  • txin_index - The input index.
§Returns

Ok(()) if successful, or a BridgeError if not.

Trait Implementations§

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impl<T: Clone + State> Clone for TxHandler<T>

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fn clone(&self) -> TxHandler<T>

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug + State> Debug for TxHandler<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Freeze for TxHandler<T>

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impl<T = Unsigned> !RefUnwindSafe for TxHandler<T>

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impl<T> Send for TxHandler<T>
where T: Send,

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impl<T> Sync for TxHandler<T>
where T: Sync,

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impl<T> Unpin for TxHandler<T>
where T: Unpin,

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impl<T = Unsigned> !UnwindSafe for TxHandler<T>

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