4 releases
0.9.38 | Sep 7, 2024 |
---|---|
0.9.37 | Jul 16, 2024 |
0.9.36 | Jun 11, 2024 |
0.9.35 | Jun 11, 2024 |
#223 in Encoding
6,297 downloads per month
Used in 3 crates
345KB
9K
SLoC
Serde Norway, a Serde YAML fork :)
A hard-fork of Serde YAML. I'm not committing to maintaining this long-term (yet). However, I also need it, because I'm in a platform team :)
Rust library for using the Serde serialization framework with data in YAML file format. (This project is no longer maintained.)
Dependency
[dependencies]
serde = "1.0"
serde_norway = "0.9"
Release notes are available under GitHub releases.
Using Serde YAML
API documentation is available in rustdoc form but the general idea is:
use std::collections::BTreeMap;
fn main() -> Result<(), serde_norway::Error> {
// You have some type.
let mut map = BTreeMap::new();
map.insert("x".to_string(), 1.0);
map.insert("y".to_string(), 2.0);
// Serialize it to a YAML string.
let yaml = serde_norway::to_string(&map)?;
assert_eq!(yaml, "x: 1.0\ny: 2.0\n");
// Deserialize it back to a Rust type.
let deserialized_map: BTreeMap<String, f64> = serde_norway::from_str(&yaml)?;
assert_eq!(map, deserialized_map);
Ok(())
}
It can also be used with Serde's derive macros to handle structs and enums defined in your program.
[dependencies]
serde = { version = "1.0", features = ["derive"] }
serde_norway = "0.9"
Structs serialize in the obvious way:
use serde::{Serialize, Deserialize};
#[derive(Debug, PartialEq, Serialize, Deserialize)]
struct Point {
x: f64,
y: f64,
}
fn main() -> Result<(), serde_norway::Error> {
let point = Point { x: 1.0, y: 2.0 };
let yaml = serde_norway::to_string(&point)?;
assert_eq!(yaml, "x: 1.0\ny: 2.0\n");
let deserialized_point: Point = serde_norway::from_str(&yaml)?;
assert_eq!(point, deserialized_point);
Ok(())
}
Enums serialize using YAML's !tag
syntax to identify the variant name.
use serde::{Serialize, Deserialize};
#[derive(Serialize, Deserialize, PartialEq, Debug)]
enum Enum {
Unit,
Newtype(usize),
Tuple(usize, usize, usize),
Struct { x: f64, y: f64 },
}
fn main() -> Result<(), serde_norway::Error> {
let yaml = "
- !Newtype 1
- !Tuple [0, 0, 0]
- !Struct {x: 1.0, y: 2.0}
";
let values: Vec<Enum> = serde_norway::from_str(yaml).unwrap();
assert_eq!(values[0], Enum::Newtype(1));
assert_eq!(values[1], Enum::Tuple(0, 0, 0));
assert_eq!(values[2], Enum::Struct { x: 1.0, y: 2.0 });
// The last two in YAML's block style instead:
let yaml = "
- !Tuple
- 0
- 0
- 0
- !Struct
x: 1.0
y: 2.0
";
let values: Vec<Enum> = serde_norway::from_str(yaml).unwrap();
assert_eq!(values[0], Enum::Tuple(0, 0, 0));
assert_eq!(values[1], Enum::Struct { x: 1.0, y: 2.0 });
// Variants with no data can be written using !Tag or just the string name.
let yaml = "
- Unit # serialization produces this one
- !Unit
";
let values: Vec<Enum> = serde_norway::from_str(yaml).unwrap();
assert_eq!(values[0], Enum::Unit);
assert_eq!(values[1], Enum::Unit);
Ok(())
}
License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Dependencies
~2MB
~34K SLoC