openethereum/src/evm/logentry.rs

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2016-01-06 13:00:14 +01:00
use util::hash::*;
use util::bytes::*;
use util::sha3::*;
/// Data sturcture used to represent Evm log entry.
pub struct LogEntry {
address: Address,
topics: Vec<H256>,
data: Bytes
}
impl LogEntry {
/// This function should be called to create new log entry.
pub fn new(address: Address, topics: Vec<H256>, data: Bytes) -> LogEntry {
LogEntry {
address: address,
topics: topics,
data: data
}
}
/// Returns reference to address.
pub fn address(&self) -> &Address {
&self.address
}
/// Returns reference to topics.
pub fn topics(&self) -> &[H256] {
&self.topics
}
/// Returns reference to data.
pub fn data(&self) -> &Bytes {
&self.data
}
/// Returns log bloom of given log entry.
pub fn bloom(&self) -> H2048 {
let mut bloom = H2048::new();
bloom.shift_bloom(&self.address.sha3());
for topic in self.topics.iter() {
bloom.shift_bloom(&topic.sha3());
}
bloom
}
}
#[cfg(test)]
mod tests {
use std::str::FromStr;
use util::hash::*;
use util::bytes::*;
use evm::LogEntry;
#[test]
fn test_empty_log_bloom() {
let bloom = H2048::from_str("00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
let log = LogEntry::new(address, vec![], vec![]);
assert_eq!(log.bloom(), bloom);
}
}