1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126

// Copyright 2015, Yuheng Chen. See the LICENSE file at the top-level
// directory of this distribution.

//! **IMPORTANT** This crate has merged with `yaml-rust2`.
//! Please upgrade to [yaml-rust2](https://github.com/Ethiraric/yaml-rust2).
//!
//! YAML 1.2 implementation in pure Rust.
//!
//! # Usage
//!
//! This crate is [on github](https://github.com/davvid/yaml-rust) and can be
//! used by adding `yaml-rust-davvid` to the dependencies in your project's
//! `Cargo.toml`.
//!
//! ```toml
//! [dependencies]
//! yaml-rust = { version = "0.6", package = "yaml-rust-davvid" }
//! ```
//!
//! Parse a string into `Vec<Yaml>` and then serialize it as a YAML string.
//!
//! # Examples
//! ```
//! # extern crate yaml_rust_davvid as yaml_rust;
//! use yaml_rust::{YamlLoader, YamlEmitter};
//!
//! let docs = YamlLoader::load_from_str("[1, 2, 3]").unwrap();
//! let doc = &docs[0]; // select the first document
//! assert_eq!(doc[0].as_i64().unwrap(), 1); // access elements by index
//!
//! let mut out_str = String::new();
//! let mut emitter = YamlEmitter::new(&mut out_str);
//! emitter.dump(doc).unwrap(); // dump the YAML object to a String
//!
//! ```

#![doc(html_root_url = "https://docs.rs/yaml-rust-davvid/0.5.2")]
#![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
#![cfg_attr(feature = "cargo-clippy", warn(cognitive_complexity))]
#![cfg_attr(
    feature = "cargo-clippy",
    allow(match_same_arms, should_implement_trait)
)]

extern crate hashlink;

pub mod emitter;
pub mod parser;
pub mod scanner;
pub mod yaml;

// reexport key APIs
pub use crate::emitter::{EmitError, YamlEmitter};
pub use crate::parser::Event;
pub use crate::scanner::ScanError;
pub use crate::yaml::{Yaml, YamlLoader};

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_api() {
        let s = "
# from yaml-cpp example
- name: Ogre
  position: [0, 5, 0]
  powers:
    - name: Club
      damage: 10
    - name: Fist
      damage: 8
- name: Dragon
  position: [1, 0, 10]
  powers:
    - name: Fire Breath
      damage: 25
    - name: Claws
      damage: 15
- name: Wizard
  position: [5, -3, 0]
  powers:
    - name: Acid Rain
      damage: 50
    - name: Staff
      damage: 3
";
        let docs = YamlLoader::load_from_str(s).unwrap();
        let doc = &docs[0];

        assert_eq!(doc[0]["name"].as_str().unwrap(), "Ogre");

        let mut writer = String::new();
        {
            let mut emitter = YamlEmitter::new(&mut writer);
            emitter.dump(doc).unwrap();
        }

        assert!(!writer.is_empty());
    }

    fn try_fail(s: &str) -> Result<Vec<Yaml>, ScanError> {
        let t = YamlLoader::load_from_str(s)?;
        Ok(t)
    }

    #[test]
    fn test_fail() {
        let s = "
# syntax error
scalar
key: [1, 2]]
key1:a2
";
        assert!(YamlLoader::load_from_str(s).is_err());
        assert!(try_fail(s).is_err());
        assert_eq!(
            try_fail(s).unwrap_err().info(),
            "mapping values are not allowed in this context"
        );
        assert_eq!(
            try_fail(s).unwrap_err().to_string(),
            "mapping values are not allowed in this context at line 4 column 4, i.e. byte index 26"
        );
    }
}