Crate cita_trie 

Usage

use std::sync::Arc;

use hasher::{Hasher, HasherKeccak}; // https://crates.io/crates/hasher

use cita_trie::MemoryDB;
use cita_trie::{PatriciaTrie, Trie};
fn main() {
    let memdb = Arc::new(MemoryDB::new(true));
    let hasher = Arc::new(HasherKeccak::new());

    let key = "test-key".as_bytes();
    let value = "test-value".as_bytes();

    let root = {
        let mut trie = PatriciaTrie::new(Arc::clone(&memdb), Arc::clone(&hasher));
        trie.insert(key.to_vec(), value.to_vec()).unwrap();

        let v = trie.get(key).unwrap();
        assert_eq!(Some(value.to_vec()), v);
        trie.root().unwrap()
    };

    let mut trie = PatriciaTrie::from(Arc::clone(&memdb), Arc::clone(&hasher), &root).unwrap();
    let exists = trie.contains(key).unwrap();
    assert_eq!(exists, true);
    let removed = trie.remove(key).unwrap();
    assert_eq!(removed, true);
    let new_root = trie.root().unwrap();
    println!("new root = {:?}", new_root);

}

Structs

MemoryDB

PatriciaTrie

Enums

MemDBError

TrieError

Traits

CDB

DB

“DB” defines the “trait” of trie and database interaction. You should first write the data to the cache and write the data to the database in bulk after the end of a set of operations.

Hasher

Trie

Functions

verify_proof