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use util::{U256, Bytes, Hashable, H256};
use rlp::{Rlp, View};
pub struct TransactionView<'a> {
rlp: Rlp<'a>
}
impl<'a> TransactionView<'a> {
pub fn new(bytes: &'a [u8]) -> TransactionView<'a> {
TransactionView {
rlp: Rlp::new(bytes)
}
}
pub fn new_from_rlp(rlp: Rlp<'a>) -> TransactionView<'a> {
TransactionView {
rlp: rlp
}
}
pub fn rlp(&self) -> &Rlp<'a> {
&self.rlp
}
pub fn nonce(&self) -> U256 { self.rlp.val_at(0) }
pub fn gas_price(&self) -> U256 { self.rlp.val_at(1) }
pub fn gas(&self) -> U256 { self.rlp.val_at(2) }
pub fn value(&self) -> U256 { self.rlp.val_at(4) }
pub fn data(&self) -> Bytes { self.rlp.val_at(5) }
pub fn v(&self) -> u8 { let r: u16 = self.rlp.val_at(6); r as u8 }
pub fn r(&self) -> U256 { self.rlp.val_at(7) }
pub fn s(&self) -> U256 { self.rlp.val_at(8) }
}
impl<'a> Hashable for TransactionView<'a> {
fn sha3(&self) -> H256 {
self.rlp.as_raw().sha3()
}
}
#[cfg(test)]
mod tests {
use std::str::FromStr;
use rustc_serialize::hex::FromHex;
use util::U256;
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);
}
}