openethereum/ethcore/src/views/transaction.rs

101 lines
3.2 KiB
Rust
Raw Normal View History

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
2016-06-28 12:08:30 +02:00
// 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/>.
//! View onto transaction rlp
2017-09-04 16:36:49 +02:00
use bigint::prelude::U256;
use bigint::hash::H256;
use bytes::Bytes;
use hash::keccak;
use rlp::Rlp;
2016-06-28 12:08:30 +02:00
/// View onto transaction rlp.
pub struct TransactionView<'a> {
rlp: Rlp<'a>
}
impl<'a> TransactionView<'a> {
/// Creates new view onto block from raw bytes.
pub fn new(bytes: &'a [u8]) -> TransactionView<'a> {
TransactionView {
rlp: Rlp::new(bytes)
}
}
/// Creates new view onto block from rlp.
pub fn new_from_rlp(rlp: Rlp<'a>) -> TransactionView<'a> {
TransactionView {
rlp: rlp
}
}
/// Return reference to underlaying rlp.
pub fn rlp(&self) -> &Rlp<'a> {
&self.rlp
}
/// Returns transaction hash.
pub fn hash(&self) -> H256 {
keccak(self.rlp.as_raw())
}
2016-06-28 12:08:30 +02:00
/// Get the nonce field of the transaction.
pub fn nonce(&self) -> U256 { self.rlp.val_at(0) }
/// Get the gas_price field of the transaction.
pub fn gas_price(&self) -> U256 { self.rlp.val_at(1) }
/// Get the gas field of the transaction.
pub fn gas(&self) -> U256 { self.rlp.val_at(2) }
/// Get the value field of the transaction.
pub fn value(&self) -> U256 { self.rlp.val_at(4) }
/// Get the data field of the transaction.
pub fn data(&self) -> Bytes { self.rlp.val_at(5) }
/// Get the v field of the transaction.
pub fn v(&self) -> u8 { let r: u16 = self.rlp.val_at(6); r as u8 }
/// Get the r field of the transaction.
pub fn r(&self) -> U256 { self.rlp.val_at(7) }
/// Get the s field of the transaction.
pub fn s(&self) -> U256 { self.rlp.val_at(8) }
}
#[cfg(test)]
mod tests {
use std::str::FromStr;
use rustc_hex::FromHex;
2017-09-04 16:36:49 +02:00
use bigint::prelude::U256;
2016-06-28 12:08:30 +02:00
use super::TransactionView;
#[test]
fn test_transaction_view() {
let rlp = "f87c80018261a894095e7baea6a6c7c4c2dfeb977efac326af552d870a9d00000000000000000000000000000000000000000000000000000000001ba048b55bfa915ac795c431978d8a6a992b628d557da5ff759b307d495a36649353a0efffd310ac743f371de3b9f7f9cb56c0b28ad43601b4ab949f53faa07bd2c804".from_hex().unwrap();
let view = TransactionView::new(&rlp);
assert_eq!(view.nonce(), U256::from(0));
assert_eq!(view.gas_price(), U256::from(1));
assert_eq!(view.gas(), U256::from(0x61a8));
assert_eq!(view.value(), U256::from(0xa));
assert_eq!(view.data(), "0000000000000000000000000000000000000000000000000000000000".from_hex().unwrap());
assert_eq!(view.r(), U256::from_str("48b55bfa915ac795c431978d8a6a992b628d557da5ff759b307d495a36649353").unwrap());
assert_eq!(view.s(), U256::from_str("efffd310ac743f371de3b9f7f9cb56c0b28ad43601b4ab949f53faa07bd2c804").unwrap());
assert_eq!(view.v(), 0x1b);
}
}