127 lines
3.5 KiB
Rust
127 lines
3.5 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/>.
|
|
|
|
use util::*;
|
|
#[cfg(test)]
|
|
use pod_state::*;
|
|
use account_diff::*;
|
|
|
|
#[derive(Debug,Clone,PartialEq,Eq)]
|
|
/// Expression for the delta between two system states. Encoded the
|
|
/// delta of every altered account.
|
|
pub struct StateDiff (BTreeMap<Address, AccountDiff>);
|
|
|
|
impl StateDiff {
|
|
#[cfg(test)]
|
|
/// Calculate and return diff between `pre` state and `post` state.
|
|
pub fn diff_pod(pre: &PodState, post: &PodState) -> StateDiff {
|
|
StateDiff(pre.get().keys().merge(post.get().keys()).filter_map(|acc| AccountDiff::diff_pod(pre.get().get(acc), post.get().get(acc)).map(|d|(acc.clone(), d))).collect())
|
|
}
|
|
}
|
|
|
|
impl fmt::Display for StateDiff {
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
|
for (add, acc) in &self.0 {
|
|
try!(write!(f, "{} {}: {}", acc.existance(), add, acc));
|
|
}
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl Deref for StateDiff {
|
|
type Target = BTreeMap<Address, AccountDiff>;
|
|
|
|
fn deref(&self) -> &Self::Target {
|
|
&self.0
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
use common::*;
|
|
use pod_state::*;
|
|
use account_diff::*;
|
|
use pod_account::*;
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn create_delete() {
|
|
let a = PodState::from(map![ x!(1) => PodAccount::new(x!(69), x!(0), vec![], map![]) ]);
|
|
assert_eq!(StateDiff::diff_pod(&a, &PodState::new()), StateDiff(map![
|
|
x!(1) => AccountDiff{
|
|
balance: Diff::Died(x!(69)),
|
|
nonce: Diff::Died(x!(0)),
|
|
code: Diff::Died(vec![]),
|
|
storage: map![],
|
|
}
|
|
]));
|
|
assert_eq!(StateDiff::diff_pod(&PodState::new(), &a), StateDiff(map![
|
|
x!(1) => AccountDiff{
|
|
balance: Diff::Born(x!(69)),
|
|
nonce: Diff::Born(x!(0)),
|
|
code: Diff::Born(vec![]),
|
|
storage: map![],
|
|
}
|
|
]));
|
|
}
|
|
|
|
#[test]
|
|
fn create_delete_with_unchanged() {
|
|
let a = PodState::from(map![ x!(1) => PodAccount::new(x!(69), x!(0), vec![], map![]) ]);
|
|
let b = PodState::from(map![
|
|
x!(1) => PodAccount::new(x!(69), x!(0), vec![], map![]),
|
|
x!(2) => PodAccount::new(x!(69), x!(0), vec![], map![])
|
|
]);
|
|
assert_eq!(StateDiff::diff_pod(&a, &b), StateDiff(map![
|
|
x!(2) => AccountDiff{
|
|
balance: Diff::Born(x!(69)),
|
|
nonce: Diff::Born(x!(0)),
|
|
code: Diff::Born(vec![]),
|
|
storage: map![],
|
|
}
|
|
]));
|
|
assert_eq!(StateDiff::diff_pod(&b, &a), StateDiff(map![
|
|
x!(2) => AccountDiff{
|
|
balance: Diff::Died(x!(69)),
|
|
nonce: Diff::Died(x!(0)),
|
|
code: Diff::Died(vec![]),
|
|
storage: map![],
|
|
}
|
|
]));
|
|
}
|
|
|
|
#[test]
|
|
fn change_with_unchanged() {
|
|
let a = PodState::from(map![
|
|
x!(1) => PodAccount::new(x!(69), x!(0), vec![], map![]),
|
|
x!(2) => PodAccount::new(x!(69), x!(0), vec![], map![])
|
|
]);
|
|
let b = PodState::from(map![
|
|
x!(1) => PodAccount::new(x!(69), x!(1), vec![], map![]),
|
|
x!(2) => PodAccount::new(x!(69), x!(0), vec![], map![])
|
|
]);
|
|
assert_eq!(StateDiff::diff_pod(&a, &b), StateDiff(map![
|
|
x!(1) => AccountDiff{
|
|
balance: Diff::Same,
|
|
nonce: Diff::Changed(x!(0), x!(1)),
|
|
code: Diff::Same,
|
|
storage: map![],
|
|
}
|
|
]));
|
|
}
|
|
|
|
}
|