openethereum/ethcore/src/views.rs

311 lines
7.9 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/>.
//! Block oriented views onto rlp.
use util::*;
use header::*;
use transaction::*;
/// 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
}
/// 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) }
// TODO: something like pub fn action(&self) -> Action { self.rlp.val_at(3) }
}
impl<'a> Hashable for TransactionView<'a> {
fn sha3(&self) -> H256 {
self.rlp.as_raw().sha3()
}
}
/// View onto transaction rlp.
pub struct AccountView<'a> {
rlp: Rlp<'a>
}
impl<'a> AccountView<'a> {
/// Creates new view onto block from raw bytes.
pub fn new(bytes: &'a [u8]) -> AccountView<'a> {
AccountView {
rlp: Rlp::new(bytes)
}
}
/// Creates new view onto block from rlp.
pub fn new_from_rlp(rlp: Rlp<'a>) -> AccountView<'a> {
AccountView {
rlp: rlp
}
}
/// Return reference to underlaying rlp.
pub fn rlp(&self) -> &Rlp<'a> {
&self.rlp
}
/// 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 balance(&self) -> U256 { self.rlp.val_at(1) }
/// Get the gas field of the transaction.
pub fn storage_root(&self) -> H256 { self.rlp.val_at(2) }
/// Get the value field of the transaction.
pub fn code_hash(&self) -> H256 { self.rlp.val_at(3) }
}
/// View onto block rlp.
pub struct BlockView<'a> {
rlp: Rlp<'a>
}
impl<'a> BlockView<'a> {
/// Creates new view onto block from raw bytes.
pub fn new(bytes: &'a [u8]) -> BlockView<'a> {
BlockView {
rlp: Rlp::new(bytes)
}
}
/// Creates new view onto block from rlp.
pub fn new_from_rlp(rlp: Rlp<'a>) -> BlockView<'a> {
BlockView {
rlp: rlp
}
}
/// Return reference to underlaying rlp.
pub fn rlp(&self) -> &Rlp<'a> {
&self.rlp
}
/// Create new Header object from header rlp.
pub fn header(&self) -> Header {
self.rlp.val_at(0)
}
/// Create new header view obto block head rlp.
pub fn header_view(&self) -> HeaderView<'a> {
HeaderView::new_from_rlp(self.rlp.at(0))
}
/// Return List of transactions in given block.
pub fn transactions(&self) -> Vec<SignedTransaction> {
self.rlp.val_at(1)
}
/// Return List of transactions with additional localization info.
pub fn localized_transactions(&self) -> Vec<LocalizedTransaction> {
let header = self.header_view();
let block_hash = header.sha3();
let block_number = header.number();
self.transactions()
.into_iter()
.enumerate()
.map(|(i, t)| LocalizedTransaction {
signed: t,
block_hash: block_hash.clone(),
block_number: block_number,
transaction_index: i
}).collect()
}
/// Return number of transactions in given block, without deserializing them.
pub fn transactions_count(&self) -> usize {
self.rlp.at(1).iter().count()
}
/// Return List of transactions in given block.
pub fn transaction_views(&self) -> Vec<TransactionView> {
self.rlp.at(1).iter().map(TransactionView::new_from_rlp).collect()
}
/// Return transaction hashes.
pub fn transaction_hashes(&self) -> Vec<H256> {
self.rlp.at(1).iter().map(|rlp| rlp.as_raw().sha3()).collect()
}
/// Returns transaction at given index without deserializing unnecessary data.
pub fn transaction_at(&self, index: usize) -> Option<SignedTransaction> {
self.rlp.at(1).iter().nth(index).map(|rlp| rlp.as_val())
}
/// Returns localized transaction at given index.
pub fn localized_transaction_at(&self, index: usize) -> Option<LocalizedTransaction> {
let header = self.header_view();
let block_hash = header.sha3();
let block_number = header.number();
self.transaction_at(index).map(|t| LocalizedTransaction {
signed: t,
block_hash: block_hash,
block_number: block_number,
transaction_index: index
})
}
/// Return list of uncles of given block.
pub fn uncles(&self) -> Vec<Header> {
self.rlp.val_at(2)
}
/// Return number of uncles in given block, without deserializing them.
pub fn uncles_count(&self) -> usize {
self.rlp.at(2).iter().count()
}
/// Return List of transactions in given block.
pub fn uncle_views(&self) -> Vec<HeaderView> {
self.rlp.at(2).iter().map(HeaderView::new_from_rlp).collect()
}
/// Return list of uncle hashes of given block.
pub fn uncle_hashes(&self) -> Vec<H256> {
self.rlp.at(2).iter().map(|rlp| rlp.as_raw().sha3()).collect()
}
}
impl<'a> Hashable for BlockView<'a> {
fn sha3(&self) -> H256 {
self.header_view().sha3()
}
}
/// View onto block header rlp.
pub struct HeaderView<'a> {
rlp: Rlp<'a>
}
impl<'a> HeaderView<'a> {
/// Creates new view onto header from raw bytes.
pub fn new(bytes: &'a [u8]) -> HeaderView<'a> {
HeaderView {
rlp: Rlp::new(bytes)
}
}
/// Creates new view onto header from rlp.
pub fn new_from_rlp(rlp: Rlp<'a>) -> HeaderView<'a> {
HeaderView {
rlp: rlp
}
}
/// Returns raw rlp.
pub fn rlp(&self) -> &Rlp<'a> { &self.rlp }
/// Returns parent hash.
pub fn parent_hash(&self) -> H256 { self.rlp.val_at(0) }
/// Returns uncles hash.
pub fn uncles_hash(&self) -> H256 { self.rlp.val_at(1) }
/// Returns author.
pub fn author(&self) -> Address { self.rlp.val_at(2) }
/// Returns state root.
pub fn state_root(&self) -> H256 { self.rlp.val_at(3) }
/// Returns transactions root.
pub fn transactions_root(&self) -> H256 { self.rlp.val_at(4) }
/// Returns block receipts root.
pub fn receipts_root(&self) -> H256 { self.rlp.val_at(5) }
/// Returns block log bloom.
pub fn log_bloom(&self) -> H2048 { self.rlp.val_at(6) }
/// Returns block difficulty.
pub fn difficulty(&self) -> U256 { self.rlp.val_at(7) }
/// Returns block number.
pub fn number(&self) -> BlockNumber { self.rlp.val_at(8) }
/// Returns block gas limit.
pub fn gas_limit(&self) -> U256 { self.rlp.val_at(9) }
/// Returns block gas used.
pub fn gas_used(&self) -> U256 { self.rlp.val_at(10) }
/// Returns timestamp.
pub fn timestamp(&self) -> u64 { self.rlp.val_at(11) }
/// Returns block extra data.
pub fn extra_data(&self) -> Bytes { self.rlp.val_at(12) }
/// Returns block seal.
pub fn seal(&self) -> Vec<Bytes> {
let mut seal = vec![];
for i in 13..self.rlp.item_count() {
seal.push(self.rlp.val_at(i));
}
seal
}
}
impl<'a> Hashable for HeaderView<'a> {
fn sha3(&self) -> H256 {
self.rlp.as_raw().sha3()
}
}