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Add hash and error.

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This commit is contained in:
Gav Wood 2015-11-25 19:26:40 +01:00
parent 526993d0c3
commit fca45496f4
5 changed files with 162 additions and 3 deletions
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107
Cargo.lock generated
View File

@ -1,4 +1,111 @@
[root]
name = "ethcore-util"
version = "0.1.0"
dependencies = [
"arrayvec 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
"env_logger 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-serialize 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "aho-corasick"
version = "0.3.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"memchr 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "arrayvec"
version = "0.3.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"nodrop 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
"odds 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "env_logger"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"log 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"regex 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "libc"
version = "0.1.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "libc"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "log"
version = "0.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "memchr"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "nodrop"
version = "0.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"odds 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "odds"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"unreachable 0.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "regex"
version = "0.1.41"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"aho-corasick 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
"memchr 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
"regex-syntax 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "regex-syntax"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "rustc-serialize"
version = "0.3.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "unreachable"
version = "0.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"void 0.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "void"
version = "0.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"

2
Cargo.toml
View File

@ -9,3 +9,5 @@ authors = ["Ethcore <admin@ethcore.io>"]
[dependencies]
log = "0.3"
env_logger = "0.3"
rustc-serialize = "0.3"
arrayvec = "0.3"

13
src/error.rs Normal file
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@ -0,0 +1,13 @@
use rustc_serialize::hex::*;
#[derive(Debug)]
pub enum EthcoreError {
FromHex(FromHexError),
BadSize
}
impl From<FromHexError> for EthcoreError {
fn from(err: FromHexError) -> EthcoreError {
EthcoreError::FromHex(err)
}
}

36
src/hash.rs Normal file
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@ -0,0 +1,36 @@
use rustc_serialize::hex::*;
use error::EthcoreError;
use std::str::FromStr;
macro_rules! impl_hash {
($from: ident, $size: expr) => {
#[derive(PartialEq, Debug)]
struct $from ([u8; $size]);
impl FromStr for $from {
// type Output = $from;
type Err = EthcoreError;
fn from_str(s: &str) -> Result<$from, EthcoreError> {
let a = try!(s.from_hex());
if a.len() != $size { return Err(EthcoreError::BadSize); }
let mut ret = $from([0;$size]);
for i in 0..$size {
ret.0[i] = a[i];
}
Ok(ret)
}
}
}
}
impl_hash!(Hash64, 8);
impl_hash!(Hash128, 16);
impl_hash!(Address, 20);
impl_hash!(Hash256, 32);
//impl_hash!(Hash512, 64);
#[test]
fn it_works() {
assert_eq!(Hash64::from_str("0123456789abcdef").unwrap(), Hash64([0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef]));
}

7
src/lib.rs
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@ -1,3 +1,4 @@
#[test]
fn it_works() {
}
extern crate rustc_serialize;
pub mod error;
pub mod hash;