openethereum/ethcore/src/pod_state.rs

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// 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/>.
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//! State of all accounts in the system expressed in Plain Old Data.
use util::*;
use pod_account::*;
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use ethjson;
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/// State of all accounts in the system expressed in Plain Old Data.
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct PodState (BTreeMap<Address, PodAccount>);
impl PodState {
/// Contruct a new object from the `m`.
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pub fn new() -> PodState { Default::default() }
/// Contruct a new object from the `m`.
#[cfg(test)]
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pub fn from(m: BTreeMap<Address, PodAccount>) -> PodState { PodState(m) }
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/// Get the underlying map.
pub fn get(&self) -> &BTreeMap<Address, PodAccount> { &self.0 }
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/// Get the root hash of the trie of the RLP of this.
pub fn root(&self) -> H256 {
sec_trie_root(self.0.iter().map(|(k, v)| (k.to_vec(), v.rlp())).collect())
}
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/// Drain object to get the underlying map.
#[cfg(test)]
#[cfg(feature = "json-tests")]
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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)
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}
}
impl fmt::Display for PodState {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
for (add, acc) in &self.0 {
try!(writeln!(f, "{} => {}", add, acc));
}
Ok(())
}
}
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