54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
use preserves::{de, value::{self, Reader, IOBinarySource, BinarySource}};
|
|
use serde::{Serialize, Deserialize};
|
|
use std::fs::File;
|
|
use std::io::Error;
|
|
|
|
#[derive(Debug, Serialize, Deserialize, PartialEq)]
|
|
enum Fruit {
|
|
Apple(Colour),
|
|
Pear(Variety),
|
|
Banana(Weight, Colour, u8),
|
|
|
|
// Peach,
|
|
|
|
#[serde(other)]
|
|
Unknown,
|
|
}
|
|
|
|
#[derive(Debug, Serialize, Deserialize, PartialEq)]
|
|
#[serde(rename = "kilograms")]
|
|
struct Weight(f32);
|
|
|
|
#[derive(Debug, Serialize, Deserialize, PartialEq)]
|
|
struct Colour {
|
|
name: String,
|
|
}
|
|
|
|
#[derive(Debug, Serialize, Deserialize, PartialEq)]
|
|
enum Variety {
|
|
Conference,
|
|
Bosc,
|
|
European,
|
|
Anjou,
|
|
}
|
|
|
|
fn try_file(kind: &str, path: &str) -> Result<(), Error> {
|
|
let fruits_value = IOBinarySource::new(&mut File::open(path)?).packed_iovalues().demand_next(true)?;
|
|
println!("{:?}", fruits_value);
|
|
|
|
let fruits1: Vec<Fruit> = value::de::from_value(&fruits_value)?;
|
|
println!("(via generic decoding) {}: {:?}", kind, fruits1);
|
|
|
|
let fruits2: Vec<Fruit> = de::from_read(&mut File::open(path)?)?;
|
|
println!("(direct from binary) {}: {:?}\n", kind, fruits2);
|
|
|
|
assert_eq!(fruits1, fruits2);
|
|
Ok(())
|
|
}
|
|
|
|
fn main() -> Result<(), Error> {
|
|
try_file("KNOWN", "examples/known-data.bin")?;
|
|
try_file("UNKNOWN", "examples/unknown-data.bin")?;
|
|
Ok(())
|
|
}
|