88 lines
2.4 KiB
Rust
88 lines
2.4 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
|
|
// This file is part of Parity.
|
|
|
|
// Parity 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.
|
|
|
|
// Parity 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
|
|
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Lenient bytes json deserialization for test json files.
|
|
|
|
use rustc_serialize::hex::FromHex;
|
|
use serde::{Deserialize, Deserializer, Error};
|
|
use serde::de::Visitor;
|
|
|
|
/// Lenient bytes json deserialization for test json files.
|
|
#[derive(Default, Debug, PartialEq, Clone)]
|
|
pub struct Bytes(Vec<u8>);
|
|
|
|
impl Into<Vec<u8>> for Bytes {
|
|
fn into(self) -> Vec<u8> {
|
|
self.0
|
|
}
|
|
}
|
|
|
|
impl Deserialize for Bytes {
|
|
fn deserialize<D>(deserializer: &mut D) -> Result<Self, D::Error>
|
|
where D: Deserializer {
|
|
deserializer.deserialize(BytesVisitor)
|
|
}
|
|
}
|
|
|
|
struct BytesVisitor;
|
|
|
|
impl Visitor for BytesVisitor {
|
|
type Value = Bytes;
|
|
|
|
fn visit_str<E>(&mut self, value: &str) -> Result<Self::Value, E> where E: Error {
|
|
let v = match value.len() {
|
|
0 => vec![],
|
|
2 if value.starts_with("0x") => vec![],
|
|
_ if value.starts_with("0x") => try!(FromHex::from_hex(&value[2..]).map_err(|_| {
|
|
Error::custom(format!("Invalid hex value {}.", value).as_ref())
|
|
})),
|
|
_ => try!(FromHex::from_hex(value).map_err(|_| {
|
|
Error::custom(format!("Invalid hex value {}.", value).as_ref())
|
|
}))
|
|
};
|
|
Ok(Bytes(v))
|
|
}
|
|
|
|
fn visit_string<E>(&mut self, value: String) -> Result<Self::Value, E> where E: Error {
|
|
self.visit_str(value.as_ref())
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
use serde_json;
|
|
use bytes::Bytes;
|
|
|
|
#[test]
|
|
fn bytes_deserialization() {
|
|
let s = r#"["", "0x", "0x12", "1234"]"#;
|
|
let deserialized: Vec<Bytes> = serde_json::from_str(s).unwrap();
|
|
assert_eq!(deserialized, vec![
|
|
Bytes(vec![]),
|
|
Bytes(vec![]),
|
|
Bytes(vec![0x12]),
|
|
Bytes(vec![0x12, 0x34])
|
|
]);
|
|
}
|
|
|
|
#[test]
|
|
fn bytes_into() {
|
|
let bytes = Bytes(vec![0xff, 0x11]);
|
|
let v: Vec<u8> = bytes.into();
|
|
assert_eq!(vec![0xff, 0x11], v);
|
|
}
|
|
}
|