openethereum/ethcore/src/receipt.rs
2016-02-19 12:52:16 +01:00

91 lines
3.2 KiB
Rust

// Copyright 2015, 2016 Ethcore (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Receipt
use util::*;
use basic_types::LogBloom;
use log_entry::LogEntry;
/// Information describing execution of a transaction.
#[derive(Default, Debug, Clone)]
pub struct Receipt {
/// The state root after executing the transaction.
pub state_root: H256,
/// The total gas used in the block following execution of the transaction.
pub gas_used: U256,
/// The OR-wide combination of all logs' blooms for this transaction.
pub log_bloom: LogBloom,
/// The logs stemming from this transaction.
pub logs: Vec<LogEntry>,
}
impl Receipt {
/// Create a new receipt.
pub fn new(state_root: H256, gas_used: U256, logs: Vec<LogEntry>) -> Receipt {
Receipt {
state_root: state_root,
gas_used: gas_used,
log_bloom: logs.iter().fold(LogBloom::new(), |mut b, l| { b = &b | &l.bloom(); b }), //TODO: use |= operator
logs: logs,
}
}
}
impl Encodable for Receipt {
fn rlp_append(&self, s: &mut RlpStream) {
s.begin_list(4);
s.append(&self.state_root);
s.append(&self.gas_used);
s.append(&self.log_bloom);
s.append(&self.logs);
}
}
impl Decodable for Receipt {
fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
let d = decoder.as_rlp();
let receipt = Receipt {
state_root: try!(d.val_at(0)),
gas_used: try!(d.val_at(1)),
log_bloom: try!(d.val_at(2)),
logs: try!(d.val_at(3)),
};
Ok(receipt)
}
}
impl HeapSizeOf for Receipt {
fn heap_size_of_children(&self) -> usize {
self.logs.heap_size_of_children()
}
}
#[test]
fn test_basic() {
let expected = FromHex::from_hex("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").unwrap();
let r = Receipt::new(
x!("2f697d671e9ae4ee24a43c4b0d7e15f1cb4ba6de1561120d43b9a4e8c4a8a6ee"),
x!(0x40cae),
vec![LogEntry {
address: x!("dcf421d093428b096ca501a7cd1a740855a7976f"),
topics: vec![],
data: vec![0u8; 32]
}]
);
assert_eq!(&encode(&r)[..], &expected[..]);
}