//! [![github]](https://github.com/dtolnay/serde-yaml) [![crates-io]](https://crates.io/crates/serde-yaml) [![docs-rs]](https://docs.rs/serde-yaml) //! //! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github //! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust //! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs //! //!
//! //! This crate is a Rust library for using the [Serde] serialization framework //! with data in [YAML] file format. //! //! [Serde]: https://github.com/serde-rs/serde //! [YAML]: https://yaml.org/ //! //! # Examples //! //! ``` //! use std::collections::BTreeMap; //! //! fn main() -> Result<(), serde_yaml::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_yaml::to_string(&map)?; //! assert_eq!(yaml, "x: 1.0\ny: 2.0\n"); //! //! // Deserialize it back to a Rust type. //! let deserialized_map: BTreeMap = serde_yaml::from_str(&yaml)?; //! assert_eq!(map, deserialized_map); //! Ok(()) //! } //! ``` //! //! ## Using Serde derive //! //! It can also be used with Serde's derive macros to handle structs and enums //! defined in your program. //! //! Structs serialize in the obvious way: //! //! ``` //! # use serde_derive::{Serialize, Deserialize}; //! use serde::{Serialize, Deserialize}; //! //! #[derive(Serialize, Deserialize, PartialEq, Debug)] //! struct Point { //! x: f64, //! y: f64, //! } //! //! fn main() -> Result<(), serde_yaml::Error> { //! let point = Point { x: 1.0, y: 2.0 }; //! //! let yaml = serde_yaml::to_string(&point)?; //! assert_eq!(yaml, "x: 1.0\ny: 2.0\n"); //! //! let deserialized_point: Point = serde_yaml::from_str(&yaml)?; //! assert_eq!(point, deserialized_point); //! Ok(()) //! } //! ``` //! //! Enums serialize using YAML's `!tag` syntax to identify the variant name. //! //! ``` //! # use serde_derive::{Serialize, Deserialize}; //! 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_yaml::Error> { //! let yaml = " //! - !Newtype 1 //! - !Tuple [0, 0, 0] //! - !Struct {x: 1.0, y: 2.0} //! "; //! let values: Vec = serde_yaml::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 = serde_yaml::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 = serde_yaml::from_str(yaml).unwrap(); //! assert_eq!(values[0], Enum::Unit); //! assert_eq!(values[1], Enum::Unit); //! //! Ok(()) //! } //! ``` #![doc(html_root_url = "https://docs.rs/serde_yaml/0.9.31")] #![deny(missing_docs, unsafe_op_in_unsafe_fn)] // Suppressed clippy_pedantic lints #![allow( // buggy clippy::iter_not_returning_iterator, // https://github.com/rust-lang/rust-clippy/issues/8285 clippy::ptr_arg, // https://github.com/rust-lang/rust-clippy/issues/9218 clippy::question_mark, // https://github.com/rust-lang/rust-clippy/issues/7859 // private Deserializer::next clippy::should_implement_trait, // things are often more readable this way clippy::cast_lossless, clippy::checked_conversions, clippy::if_not_else, clippy::manual_assert, clippy::match_like_matches_macro, clippy::match_same_arms, clippy::module_name_repetitions, clippy::needless_pass_by_value, clippy::redundant_else, clippy::single_match_else, // code is acceptable clippy::blocks_in_conditions, clippy::cast_possible_truncation, clippy::cast_possible_wrap, clippy::cast_precision_loss, clippy::cast_sign_loss, clippy::derive_partial_eq_without_eq, clippy::derived_hash_with_manual_eq, clippy::doc_markdown, clippy::items_after_statements, clippy::let_underscore_untyped, clippy::manual_map, clippy::missing_panics_doc, clippy::never_loop, clippy::return_self_not_must_use, clippy::too_many_lines, clippy::uninlined_format_args, clippy::unsafe_removed_from_name, clippy::wildcard_in_or_patterns, // noisy clippy::missing_errors_doc, clippy::must_use_candidate, )] pub use crate::de::{from_reader, from_slice, from_str, Deserializer}; pub use crate::error::{Error, Location, Result}; pub use crate::ser::{to_string, to_writer, Serializer}; #[doc(inline)] pub use crate::value::{from_value, to_value, Index, Number, Sequence, Value}; #[doc(inline)] pub use crate::mapping::Mapping; mod de; mod error; mod libyaml; mod loader; pub mod mapping; mod number; mod path; mod ser; pub mod value; pub mod with; // Prevent downstream code from implementing the Index trait. mod private { pub trait Sealed {} impl Sealed for usize {} impl Sealed for str {} impl Sealed for String {} impl Sealed for crate::Value {} impl<'a, T> Sealed for &'a T where T: ?Sized + Sealed {} }