openethereum/util/rlp/src/traits.rs

31 lines
885 B
Rust

// Copyright 2015-2017 Parity Technologies
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Common RLP traits
use elastic_array::ElasticArray1024;
use {DecoderError, Rlp, RlpStream};
/// RLP decodable trait
pub trait Decodable: Sized {
/// Decode a value from RLP bytes
fn decode(rlp: &Rlp) -> Result<Self, DecoderError>;
}
/// Structure encodable to RLP
pub trait Encodable {
/// Append a value to the stream
fn rlp_append(&self, s: &mut RlpStream);
/// Get rlp-encoded bytes for this instance
fn rlp_bytes(&self) -> ElasticArray1024<u8> {
let mut s = RlpStream::new();
self.rlp_append(&mut s);
s.drain()
}
}