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use util::*;
use pod_account::{self, PodAccount};
use types::state_diff::StateDiff;
use ethjson;
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct PodState (BTreeMap<Address, PodAccount>);
impl PodState {
pub fn new() -> PodState { Default::default() }
pub fn from(m: BTreeMap<Address, PodAccount>) -> PodState { PodState(m) }
pub fn get(&self) -> &BTreeMap<Address, PodAccount> { &self.0 }
pub fn root(&self) -> H256 {
sec_trie_root(self.0.iter().map(|(k, v)| (k.to_vec(), v.rlp())).collect())
}
pub fn drain(self) -> BTreeMap<Address, PodAccount> { self.0 }
}
impl From<ethjson::blockchain::State> for PodState {
fn from(s: ethjson::blockchain::State) -> PodState {
let state = s.into_iter().map(|(addr, acc)| (addr.into(), PodAccount::from(acc))).collect();
PodState(state)
}
}
impl From<ethjson::spec::State> for PodState {
fn from(s: ethjson::spec::State) -> PodState {
let state: BTreeMap<_,_> = s.into_iter()
.filter(|pair| !pair.1.is_empty())
.map(|(addr, acc)| (addr.into(), PodAccount::from(acc)))
.collect();
PodState(state)
}
}
impl fmt::Display for PodState {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
for (add, acc) in &self.0 {
writeln!(f, "{} => {}", add, acc)?;
}
Ok(())
}
}
pub fn diff_pod(pre: &PodState, post: &PodState) -> StateDiff {
StateDiff { raw: pre.get().keys().merge(post.get().keys()).filter_map(|acc| pod_account::diff_pod(pre.get().get(acc), post.get().get(acc)).map(|d|(acc.clone(), d))).collect() }
}
#[cfg(test)]
mod test {
use util::*;
use types::state_diff::*;
use types::account_diff::*;
use pod_account::PodAccount;
use super::PodState;
#[test]
fn create_delete() {
let a = PodState::from(map![ 1.into() => PodAccount::new(69.into(), 0.into(), vec![], map![]) ]);
assert_eq!(super::diff_pod(&a, &PodState::new()), StateDiff { raw: map![
1.into() => AccountDiff{
balance: Diff::Died(69.into()),
nonce: Diff::Died(0.into()),
code: Diff::Died(vec![]),
storage: map![],
}
]});
assert_eq!(super::diff_pod(&PodState::new(), &a), StateDiff{ raw: map![
1.into() => AccountDiff{
balance: Diff::Born(69.into()),
nonce: Diff::Born(0.into()),
code: Diff::Born(vec![]),
storage: map![],
}
]});
}
#[test]
fn create_delete_with_unchanged() {
let a = PodState::from(map![ 1.into() => PodAccount::new(69.into(), 0.into(), vec![], map![]) ]);
let b = PodState::from(map![
1.into() => PodAccount::new(69.into(), 0.into(), vec![], map![]),
2.into() => PodAccount::new(69.into(), 0.into(), vec![], map![])
]);
assert_eq!(super::diff_pod(&a, &b), StateDiff { raw: map![
2.into() => AccountDiff{
balance: Diff::Born(69.into()),
nonce: Diff::Born(0.into()),
code: Diff::Born(vec![]),
storage: map![],
}
]});
assert_eq!(super::diff_pod(&b, &a), StateDiff { raw: map![
2.into() => AccountDiff{
balance: Diff::Died(69.into()),
nonce: Diff::Died(0.into()),
code: Diff::Died(vec![]),
storage: map![],
}
]});
}
#[test]
fn change_with_unchanged() {
let a = PodState::from(map![
1.into() => PodAccount::new(69.into(), 0.into(), vec![], map![]),
2.into() => PodAccount::new(69.into(), 0.into(), vec![], map![])
]);
let b = PodState::from(map![
1.into() => PodAccount::new(69.into(), 1.into(), vec![], map![]),
2.into() => PodAccount::new(69.into(), 0.into(), vec![], map![])
]);
assert_eq!(super::diff_pod(&a, &b), StateDiff { raw: map![
1.into() => AccountDiff{
balance: Diff::Same,
nonce: Diff::Changed(0.into(), 1.into()),
code: Diff::Same,
storage: map![],
}
]});
}
}