41 releases (9 stable)
1.0.8 | May 10, 2024 |
---|---|
1.0.7 | Jan 12, 2024 |
1.0.6 | Sep 18, 2023 |
1.0.5 | Aug 31, 2022 |
0.12.0 | Jul 26, 2021 |
#260 in Parser implementations
126 downloads per month
Used in 2 crates
120KB
2.5K
SLoC
yaml-peg
A YAML 1.2 parser using a greedy parsing algorithm with PEG atoms. Support anchors, directives, positions, tags, serde, 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.
The anchors can be visited by the loader after parsing.
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.
-
Support anchors / alias.
- Direct mode: Embed the alias directly.
- Cyclic mode: Keep the alias placeholder, for cyclic data.
-
Support YAML directives
YAML
andTAG
.WARNING:
%YAML 1.1
will still be treated as 1.2.%YAML 1.2 %TAG !x! tag:my.prefix: ---
-
Support
serde
to help you serialize and deserialize a specific type. (as well as the non-cyclic anchors)use serde::Deserialize; use yaml_peg::serde::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);
Dependencies
~1MB
~17K SLoC