blockworks-foundation
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solana
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attempt to understand entry

This commit is contained in:
Rob Walker 2018-06-18 13:23:15 -07:00 committed by Greg Fitzgerald
parent c40000aeda
commit 0de5e7a285
1 changed files with 7 additions and 2 deletions
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9
src/entry.rs
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@ -84,8 +84,9 @@ fn add_transaction_data(hash_data: &mut Vec<u8>, tx: &Transaction) {
/// Creates the hash `num_hashes` after `start_hash`. If the transaction contains /// Creates the hash `num_hashes` after `start_hash`. If the transaction contains
/// a signature, the final hash will be a hash of both the previous ID and /// a signature, the final hash will be a hash of both the previous ID and
/// the signature. /// the signature. If num_hashes is zero and there's no transaction data,
pub fn next_hash(start_hash: &Hash, num_hashes: u64, transactions: &[Transaction]) -> Hash { // start_hash is returned.
fn next_hash(start_hash: &Hash, num_hashes: u64, transactions: &[Transaction]) -> Hash {
let mut id = *start_hash; let mut id = *start_hash;
for _ in 1..num_hashes { for _ in 1..num_hashes {
id = hash(&id); id = hash(&id);
@ -174,5 +175,9 @@ mod tests {
let tick = next_entry(&zero, 1, vec![]); let tick = next_entry(&zero, 1, vec![]);
assert_eq!(tick.num_hashes, 1); assert_eq!(tick.num_hashes, 1);
assert_ne!(tick.id, zero); assert_ne!(tick.id, zero);
let tick = next_entry(&zero, 0, vec![]);
assert_eq!(tick.num_hashes, 0);
assert_eq!(tick.id, zero);
} }
} }