moved src to ethcore

ethcore/src/log_entry.rs

@@ -0,0 +1,79 @@
+use util::*;
+use basic_types::LogBloom;
+
+/// A single log's entry.
+#[derive(Default, Debug, Clone, PartialEq, Eq)]
+pub struct LogEntry {
+	/// TODO [Gav Wood] Please document me
+	pub address: Address,
+	/// TODO [Gav Wood] Please document me
+	pub topics: Vec<H256>,
+	/// TODO [Gav Wood] Please document me
+	pub data: Bytes,
+}
+
+impl Encodable for LogEntry {
+	fn rlp_append(&self, s: &mut RlpStream) {
+		s.begin_list(3);
+		s.append(&self.address);
+		s.append(&self.topics);
+		s.append(&self.data);
+	}
+}
+
+impl LogEntry {
+	/// Create a 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) -> &Vec<H256> {
+		&self.topics
+	}
+
+	/// Returns reference to data.
+	pub fn data(&self) -> &Bytes {
+		&self.data
+	}
+
+	/// Calculates the bloom of this log entry.
+	pub fn bloom(&self) -> LogBloom {
+		self.topics.iter().fold(LogBloom::from_bloomed(&self.address.sha3()), |b, t| b.with_bloomed(&t.sha3()))
+	}
+}
+
+impl FromJson for LogEntry {
+	/// Convert given JSON object to a LogEntry.
+	fn from_json(json: &Json) -> LogEntry {
+		// TODO: check bloom.
+		LogEntry {
+			address: xjson!(&json["address"]),
+			topics: xjson!(&json["topics"]),
+			data: xjson!(&json["data"]),
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use util::*;
+	use super::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);
+	}
+}