    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

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

    //! YAML 1.2 implementation in pure Rust.
    //!
    //! # Usage
    //!
    //! This crate is [on github](https://github.com/chyh1990/yaml-rust) and can be
    //! used by adding `yaml-rust` to the dependencies in your project's `Cargo.toml`.
    //!
    //! ```toml
    //! [dependencies.yaml-rust]
    //! git = "https://github.com/chyh1990/yaml-rust.git"
    //! ```
    //!
    //! And this in your crate root:
    //!
    //! ```rust
    //! extern crate yaml_rust;
    //! ```
    //!
    //! Parse a string into `Vec<Yaml>` and then serialize it as a YAML string.
    //!
    //! # Examples
    //!
    //! ```
    //! 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/0.4.5")]
    #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
    #![cfg_attr(feature = "cargo-clippy", warn(cyclomatic_complexity))]
    #![cfg_attr(
        feature = "cargo-clippy",
        allow(match_same_arms, should_implement_trait)
    )]

    extern crate linked_hash_map;

    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());
        }

    }