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simplify compression and move it out of rlp crate (#7957) 

* simplify compression and move it out of rlp crate

* removed lazy_static dependency from rlp
This commit is contained in:
Marek Kotewicz 2018-02-23 10:12:52 +01:00 committed by Rando
parent f824d3c673
commit 69572b88a7
5 changed files with 1 additions and 255 deletions
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1
Cargo.toml
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@ -9,6 +9,5 @@ authors = ["Parity Technologies <admin@parity.io>"]
[dependencies]
elastic-array = "0.9"
ethereum-types = "0.2"
lazy_static = "1.0"
rustc-hex = "1.0"
byteorder = "1.0"

42
src/common.rs
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@ -1,42 +0,0 @@
// 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.
//! Contains RLPs used for compression.
use compression::InvalidRlpSwapper;
lazy_static! {
/// Swapper for snapshot compression.
pub static ref SNAPSHOT_RLP_SWAPPER: InvalidRlpSwapper<'static> = InvalidRlpSwapper::new(EMPTY_RLPS, INVALID_RLPS);
}
lazy_static! {
/// Swapper with common long RLPs, up to 127 can be added.
pub static ref BLOCKS_RLP_SWAPPER: InvalidRlpSwapper<'static> = InvalidRlpSwapper::new(COMMON_RLPS, INVALID_RLPS);
}
static EMPTY_RLPS: &'static [&'static [u8]] = &[
// RLP of KECCAK_NULL_RLP
&[160, 86, 232, 31, 23, 27, 204, 85, 166, 255, 131, 69, 230, 146, 192, 248, 110, 91, 72, 224, 27, 153, 108, 173, 192, 1, 98, 47, 181, 227, 99, 180, 33],
// RLP of KECCAK_EMPTY
&[160, 197, 210, 70, 1, 134, 247, 35, 60, 146, 126, 125, 178, 220, 199, 3, 192, 229, 0, 182, 83, 202, 130, 39, 59, 123, 250, 216, 4, 93, 133, 164, 112]
];
static COMMON_RLPS: &'static [&'static [u8]] = &[
// RLP of KECCAK_NULL_RLP
&[160, 86, 232, 31, 23, 27, 204, 85, 166, 255, 131, 69, 230, 146, 192, 248, 110, 91, 72, 224, 27, 153, 108, 173, 192, 1, 98, 47, 181, 227, 99, 180, 33],
// RLP of KECCAK_EMPTY
&[160, 197, 210, 70, 1, 134, 247, 35, 60, 146, 126, 125, 178, 220, 199, 3, 192, 229, 0, 182, 83, 202, 130, 39, 59, 123, 250, 216, 4, 93, 133, 164, 112],
// Other RLPs found in blocks DB using the test below.
&[160, 29, 204, 77, 232, 222, 199, 93, 122, 171, 133, 181, 103, 182, 204, 212, 26, 211, 18, 69, 27, 148, 138, 116, 19, 240, 161, 66, 253, 64, 212, 147, 71],
&[148, 50, 190, 52, 59, 148, 248, 96, 18, 77, 196, 254, 226, 120, 253, 203, 211, 140, 16, 45, 136],
&[148, 82, 188, 68, 213, 55, 131, 9, 238, 42, 191, 21, 57, 191, 113, 222, 27, 125, 123, 227, 181],
&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
];
static INVALID_RLPS: &'static [&'static [u8]] = &[&[0x81, 0x0], &[0x81, 0x1], &[0x81, 0x2], &[0x81, 0x3], &[0x81, 0x4], &[0x81, 0x5], &[0x81, 0x6], &[0x81, 0x7], &[0x81, 0x8], &[0x81, 0x9], &[0x81, 0xa], &[0x81, 0xb], &[0x81, 0xc], &[0x81, 0xd], &[0x81, 0xe], &[0x81, 0xf], &[0x81, 0x10], &[0x81, 0x11], &[0x81, 0x12], &[0x81, 0x13], &[0x81, 0x14], &[0x81, 0x15], &[0x81, 0x16], &[0x81, 0x17], &[0x81, 0x18], &[0x81, 0x19], &[0x81, 0x1a], &[0x81, 0x1b], &[0x81, 0x1c], &[0x81, 0x1d], &[0x81, 0x1e], &[0x81, 0x1f], &[0x81, 0x20], &[0x81, 0x21], &[0x81, 0x22], &[0x81, 0x23], &[0x81, 0x24], &[0x81, 0x25], &[0x81, 0x26], &[0x81, 0x27], &[0x81, 0x28], &[0x81, 0x29], &[0x81, 0x2a], &[0x81, 0x2b], &[0x81, 0x2c], &[0x81, 0x2d], &[0x81, 0x2e], &[0x81, 0x2f], &[0x81, 0x30], &[0x81, 0x31], &[0x81, 0x32], &[0x81, 0x33], &[0x81, 0x34], &[0x81, 0x35], &[0x81, 0x36], &[0x81, 0x37], &[0x81, 0x38], &[0x81, 0x39], &[0x81, 0x3a], &[0x81, 0x3b], &[0x81, 0x3c], &[0x81, 0x3d], &[0x81, 0x3e], &[0x81, 0x3f], &[0x81, 0x40], &[0x81, 0x41], &[0x81, 0x42], &[0x81, 0x43], &[0x81, 0x44], &[0x81, 0x45], &[0x81, 0x46], &[0x81, 0x47], &[0x81, 0x48], &[0x81, 0x49], &[0x81, 0x4a], &[0x81, 0x4b], &[0x81, 0x4c], &[0x81, 0x4d], &[0x81, 0x4e], &[0x81, 0x4f], &[0x81, 0x50], &[0x81, 0x51], &[0x81, 0x52], &[0x81, 0x53], &[0x81, 0x54], &[0x81, 0x55], &[0x81, 0x56], &[0x81, 0x57], &[0x81, 0x58], &[0x81, 0x59], &[0x81, 0x5a], &[0x81, 0x5b], &[0x81, 0x5c], &[0x81, 0x5d], &[0x81, 0x5e], &[0x81, 0x5f], &[0x81, 0x60], &[0x81, 0x61], &[0x81, 0x62], &[0x81, 0x63], &[0x81, 0x64], &[0x81, 0x65], &[0x81, 0x66], &[0x81, 0x67], &[0x81, 0x68], &[0x81, 0x69], &[0x81, 0x6a], &[0x81, 0x6b], &[0x81, 0x6c], &[0x81, 0x6d], &[0x81, 0x6e], &[0x81, 0x6f], &[0x81, 0x70], &[0x81, 0x71], &[0x81, 0x72], &[0x81, 0x73], &[0x81, 0x74], &[0x81, 0x75], &[0x81, 0x76], &[0x81, 0x77], &[0x81, 0x78], &[0x81, 0x79], &[0x81, 0x7a], &[0x81, 0x7b], &[0x81, 0x7c], &[0x81, 0x7d], &[0x81, 0x7e]];

194
src/compression.rs
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8
src/lib.rs
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@ -43,27 +43,21 @@ extern crate ethereum_types as bigint;
extern crate elastic_array;
extern crate rustc_hex;
#[macro_use]
extern crate lazy_static;
mod traits;
mod error;
mod rlpin;
mod untrusted_rlp;
mod stream;
mod compression;
mod common;
mod impls;
use std::borrow::Borrow;
use elastic_array::ElasticArray1024;
pub use error::DecoderError;
pub use traits::{Decodable, Encodable, Compressible};
pub use traits::{Decodable, Encodable};
pub use untrusted_rlp::{UntrustedRlp, UntrustedRlpIterator, PayloadInfo, Prototype};
pub use rlpin::{Rlp, RlpIterator};
pub use stream::RlpStream;
pub use compression::RlpType;
/// The RLP encoded empty data (used to mean "null value").
pub const NULL_RLP: [u8; 1] = [0x80; 1];

11
src/traits.rs
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@ -28,14 +28,3 @@ pub trait Encodable {
s.drain()
}
}
/// Trait for compressing and decompressing RLP by replacement of common terms.
pub trait Compressible: Sized {
/// Indicates the origin of RLP to be compressed.
type DataType;
/// Compress given RLP type using appropriate methods.
fn compress(&self, t: Self::DataType) -> ElasticArray1024<u8>;
/// Decompress given RLP type using appropriate methods.
fn decompress(&self, t: Self::DataType) -> ElasticArray1024<u8>;
}