yaml-peg

A YAML 1.2 parser using a greedy parsing algorithm with PEG atoms. Support anchor visitor and no-std.

Inspired from yaml-rust and serde-yaml.

This parser is not ensure about YAML spec but almost functions are well-implemented. The buffer reader has also not yet been implemented, but the chunks can be read by the sub-parsers.

After parsing, the anchors can be visited by the anchor visitor.

use yaml_peg::{parse, node};

let doc = "
---
name: Bob
married: true
age: 46
";
let root = parse(doc).unwrap();
assert_eq!(root, vec![node!({
    "name" => "Bob",
    "married" => true,
    "age" => 46,
})]);

See the API doc for more information.

Features

Support no standard library #![no_std].
Different data holder Rc / Arc provides parallel visiting and less copy cost.
Provide document positions and tags on the nodes.

Anchors / alias are supported.

let mut root = parse::<RcRepr>(doc).unwrap();
let node = root.remove(0);

YAML directives YAML and TAG are allowed.
```
%YAML 1.2
%TAG !x! tag:my.prefix:
---
```

Support serde to help you serialize and deserialize a specific type. (as well as the anchors)

use serde::Deserialize;
use yaml_peg::serialize::from_str;

#[derive(Deserialize)]
struct Member {
   name: String,
   married: bool,
   age: u8,
}

let doc = "
---
name: Bob
married: true
age: 46
";
// Return Vec<Member>, use `.remove(0)` to get the first one
let officer = from_str::<Member>(doc).unwrap().remove(0);
assert_eq!("Bob", officer.name);
assert!(officer.married);
assert_eq!(46, officer.age);

yaml-peg 0.26.1

yaml-peg

Features