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use hash::H256;
use sha3::Hashable;
use hashdb::HashDB;
use super::triedb::TrieDB;
use super::{Trie, TrieItem, TrieIterator, Query};
pub struct SecTrieDB<'db> {
raw: TrieDB<'db>
}
impl<'db> SecTrieDB<'db> {
pub fn new(db: &'db HashDB, root: &'db H256) -> super::Result<Self> {
Ok(SecTrieDB { raw: TrieDB::new(db, root)? })
}
pub fn raw(&self) -> &TrieDB {
&self.raw
}
pub fn raw_mut(&mut self) -> &mut TrieDB<'db> {
&mut self.raw
}
}
impl<'db> Trie for SecTrieDB<'db> {
fn iter<'a>(&'a self) -> super::Result<Box<TrieIterator<Item = TrieItem> + 'a>> {
TrieDB::iter(&self.raw)
}
fn root(&self) -> &H256 { self.raw.root() }
fn contains(&self, key: &[u8]) -> super::Result<bool> {
self.raw.contains(&key.sha3())
}
fn get_with<'a, 'key, Q: Query>(&'a self, key: &'key [u8], query: Q) -> super::Result<Option<Q::Item>>
where 'a: 'key
{
self.raw.get_with(&key.sha3(), query)
}
}
#[test]
fn trie_to_sectrie() {
use memorydb::MemoryDB;
use hashdb::DBValue;
use super::triedbmut::TrieDBMut;
use super::super::TrieMut;
let mut memdb = MemoryDB::new();
let mut root = H256::default();
{
let mut t = TrieDBMut::new(&mut memdb, &mut root);
t.insert(&(&[0x01u8, 0x23]).sha3(), &[0x01u8, 0x23]).unwrap();
}
let t = SecTrieDB::new(&memdb, &root).unwrap();
assert_eq!(t.get(&[0x01u8, 0x23]).unwrap().unwrap(), DBValue::from_slice(&[0x01u8, 0x23]));
}