openethereum/accounts/ethstore/src/json/bytes.rs

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// Copyright 2015-2020 Parity Technologies (UK) Ltd.
// This file is part of OpenEthereum.
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// OpenEthereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
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// OpenEthereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
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// along with OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
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use rustc_hex::{FromHex, FromHexError, ToHex};
use serde::{de::Error, Deserialize, Deserializer, Serialize, Serializer};
use std::{ops, str};
#[derive(Debug, PartialEq)]
pub struct Bytes(Vec<u8>);
impl ops::Deref for Bytes {
type Target = [u8];
fn deref(&self) -> &Self::Target {
&self.0
}
}
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impl<'a> Deserialize<'a> for Bytes {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where
D: Deserializer<'a>,
{
let s = String::deserialize(deserializer)?;
let data = s
.from_hex()
.map_err(|e| Error::custom(format!("Invalid hex value {}", e)))?;
Ok(Bytes(data))
}
}
impl Serialize for Bytes {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_str(&self.0.to_hex())
}
}
impl str::FromStr for Bytes {
type Err = FromHexError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
s.from_hex().map(Bytes)
}
}
impl From<&'static str> for Bytes {
fn from(s: &'static str) -> Self {
s.parse().expect(&format!(
"invalid string literal for {}: '{}'",
stringify!(Self),
s
))
}
}
impl From<Vec<u8>> for Bytes {
fn from(v: Vec<u8>) -> Self {
Bytes(v)
}
}
impl From<Bytes> for Vec<u8> {
fn from(b: Bytes) -> Self {
b.0
}
}