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