044d070667
* fixed naming of rlp modules * RlpStream cleanup * appending short rlp lists (0...55 bytes) is 25% faster * RlpStream does not use bytes module, nor trait Stream * removed unused code from rlp module * compiling ethcore-util with new rlp serialization * compiling parity with new rlp serialization * fixed compiling ethcore-light with new rlp serialization * fixed compiling ethsync with new rlp serialization * moved rlp benches and rlp tests * rlp deserialization refactor, 30% faster * removed redundant comment, print * fixed compiling parity with new rlp deserialization * removed redundant double-space * fixed failing test * updated rlp docs, removed unused traits * fixed rlp benchmarks * replace usage of WriteBytesExt with ByteOrder * removed unused, commented out code * fixed merge conflict
124 lines
3.5 KiB
Rust
124 lines
3.5 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Recursive Length Prefix serialization crate.
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//!
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//! Allows encoding, decoding, and view onto rlp-slice
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//!
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//!# What should you use when?
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//!
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//!### Use `encode` function when:
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//! * You want to encode something inline.
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//! * You do not work on big set of data.
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//! * You want to encode whole data structure at once.
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//!
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//!### Use `decode` function when:
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//! * You want to decode something inline.
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//! * You do not work on big set of data.
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//! * You want to decode whole rlp at once.
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//!
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//!### Use `RlpStream` when:
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//! * You want to encode something in portions.
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//! * You encode a big set of data.
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//!
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//!### Use `Rlp` when:
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//! * You are working on trusted data (not corrupted).
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//! * You want to get view onto rlp-slice.
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//! * You don't want to decode whole rlp at once.
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//!
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//!### Use `UntrustedRlp` when:
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//! * You are working on untrusted data (~corrupted).
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//! * You need to handle data corruption errors.
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//! * You are working on input data.
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//! * You want to get view onto rlp-slice.
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//! * You don't want to decode whole rlp at once.
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extern crate byteorder;
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extern crate ethcore_bigint as bigint;
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extern crate elastic_array;
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extern crate rustc_serialize;
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#[macro_use]
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extern crate lazy_static;
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mod traits;
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mod error;
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mod rlpin;
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mod untrusted_rlp;
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mod stream;
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mod compression;
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mod common;
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mod impls;
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use std::borrow::Borrow;
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use elastic_array::ElasticArray1024;
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pub use error::DecoderError;
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pub use traits::{Decodable, Encodable, Compressible};
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pub use untrusted_rlp::{UntrustedRlp, UntrustedRlpIterator, PayloadInfo, Prototype};
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pub use rlpin::{Rlp, RlpIterator};
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pub use stream::RlpStream;
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pub use compression::RlpType;
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/// The RLP encoded empty data (used to mean "null value").
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pub const NULL_RLP: [u8; 1] = [0x80; 1];
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/// The RLP encoded empty list.
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pub const EMPTY_LIST_RLP: [u8; 1] = [0xC0; 1];
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/// Shortcut function to decode trusted rlp
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///
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/// ```rust
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/// extern crate rlp;
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///
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/// fn main () {
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/// let data = vec![0x83, b'c', b'a', b't'];
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/// let animal: String = rlp::decode(&data);
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/// assert_eq!(animal, "cat".to_owned());
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/// }
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/// ```
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pub fn decode<T>(bytes: &[u8]) -> T where T: Decodable {
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let rlp = Rlp::new(bytes);
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rlp.as_val()
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}
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pub fn decode_list<T>(bytes: &[u8]) -> Vec<T> where T: Decodable {
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let rlp = Rlp::new(bytes);
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rlp.as_list()
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}
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/// Shortcut function to encode structure into rlp.
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///
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/// ```rust
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/// extern crate rlp;
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///
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/// fn main () {
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/// let animal = "cat";
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/// let out = rlp::encode(&animal).to_vec();
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/// assert_eq!(out, vec![0x83, b'c', b'a', b't']);
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/// }
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/// ```
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pub fn encode<E>(object: &E) -> ElasticArray1024<u8> where E: Encodable {
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let mut stream = RlpStream::new();
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stream.append(object);
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stream.drain()
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}
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pub fn encode_list<E, K>(object: &[K]) -> ElasticArray1024<u8> where E: Encodable, K: Borrow<E> {
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let mut stream = RlpStream::new();
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stream.append_list(object);
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stream.drain()
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}
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