-//! Contains simple structs describing parts of transactions on the chain.
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+//! Types describing on-chain transactions.
use bitcoin::hash_types::Txid;
use bitcoin::blockdata::transaction::OutPoint as BitcoinOutPoint;
+use bitcoin::blockdata::transaction::Transaction;
+
+/// Transaction data where each item consists of a transaction reference paired with the index of
+/// the transaction within a block.
+///
+/// Useful for passing enumerated transactions from a block, possibly filtered, in order to retain
+/// the transaction index.
+///
+/// ```
+/// extern crate bitcoin;
+/// extern crate lightning;
+///
+/// use bitcoin::blockdata::block::Block;
+/// use bitcoin::blockdata::constants::genesis_block;
+/// use bitcoin::network::constants::Network;
+/// use lightning::chain::transaction::TransactionData;
+///
+/// let block = genesis_block(Network::Bitcoin);
+/// let txdata: Vec<_> = block.txdata.iter().enumerate().collect();
+/// check_block(&block, &txdata);
+///
+/// fn check_block(block: &Block, txdata: &TransactionData) {
+/// assert_eq!(block.txdata.len(), 1);
+/// assert_eq!(txdata.len(), 1);
+///
+/// let (index, tx) = txdata[0];
+/// assert_eq!(index, 0);
+/// assert_eq!(tx, &block.txdata[0]);
+/// }
+/// ```
+pub type TransactionData<'a> = [(usize, &'a Transaction)];
/// A reference to a transaction output.
///
}
/// Converts this OutPoint into the OutPoint field as used by rust-bitcoin
+ /// (C-not exported) as the same type is used universally in the C bindings for all outpoints
pub fn into_bitcoin_outpoint(self) -> BitcoinOutPoint {
BitcoinOutPoint {
txid: self.txid,
}
}
-impl_writeable!(OutPoint, 0, { txid, index });
+impl_writeable!(OutPoint, { txid, index });
#[cfg(test)]
mod tests {
- use chain::transaction::OutPoint;
+ use crate::chain::transaction::OutPoint;
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::consensus::encode;