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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264
//! # Serde //! //! Serde is a framework for ***ser***ializing and ***de***serializing Rust data //! structures efficiently and generically. //! //! The Serde ecosystem consists of data structures that know how to serialize //! and deserialize themselves along with data formats that know how to //! serialize and deserialize other things. Serde provides the layer by which //! these two groups interact with each other, allowing any supported data //! structure to be serialized and deserialized using any supported data format. //! //! See the Serde website [https://serde.rs/] for additional documentation and //! usage examples. //! //! [https://serde.rs/]: https://serde.rs/ //! //! ## Design //! //! Where many other languages rely on runtime reflection for serializing data, //! Serde is instead built on Rust's powerful trait system. A data structure //! that knows how to serialize and deserialize itself is one that implements //! Serde's `Serialize` and `Deserialize` traits (or uses Serde's derive //! attribute to automatically generate implementations at compile time). This //! avoids any overhead of reflection or runtime type information. In fact in //! many situations the interaction between data structure and data format can //! be completely optimized away by the Rust compiler, leaving Serde //! serialization to perform the same speed as a handwritten serializer for the //! specific selection of data structure and data format. //! //! ## Data formats //! //! The following is a partial list of data formats that have been implemented //! for Serde by the community. //! //! - [JSON], the ubiquitous JavaScript Object Notation used by many HTTP APIs. //! - [Bincode], a compact binary format //! used for IPC within the Servo rendering engine. //! - [CBOR], a Concise Binary Object Representation designed for small message //! size without the need for version negotiation. //! - [YAML], a popular human-friendly configuration language that ain't markup //! language. //! - [MessagePack], an efficient binary format that resembles a compact JSON. //! - [TOML], a minimal configuration format used by [Cargo]. //! - [Pickle], a format common in the Python world. //! - [RON], a Rusty Object Notation. //! - [BSON], the data storage and network transfer format used by MongoDB. //! - [Avro], a binary format used within Apache Hadoop, with support for schema //! definition. //! - [Hjson], a variant of JSON designed to be readable and writable by humans. //! - [JSON5], A superset of JSON including some productions from ES5. //! - [URL], the x-www-form-urlencoded format. //! - [Envy], a way to deserialize environment variables into Rust structs. //! *(deserialization only)* //! - [Envy Store], a way to deserialize [AWS Parameter Store] parameters into //! Rust structs. *(deserialization only)* //! //! [JSON]: https://github.com/serde-rs/json //! [Bincode]: https://github.com/TyOverby/bincode //! [CBOR]: https://github.com/pyfisch/cbor //! [YAML]: https://github.com/dtolnay/serde-yaml //! [MessagePack]: https://github.com/3Hren/msgpack-rust //! [TOML]: https://github.com/alexcrichton/toml-rs //! [Pickle]: https://github.com/birkenfeld/serde-pickle //! [RON]: https://github.com/ron-rs/ron //! [BSON]: https://github.com/zonyitoo/bson-rs //! [Avro]: https://github.com/flavray/avro-rs //! [Hjson]: https://github.com/laktak/hjson-rust //! [JSON5]: https://github.com/callum-oakley/json5-rs //! [URL]: https://github.com/nox/serde_urlencoded //! [Envy]: https://github.com/softprops/envy //! [Envy Store]: https://github.com/softprops/envy-store //! [Cargo]: http://doc.crates.io/manifest.html //! [AWS Parameter Store]: https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-paramstore.html //////////////////////////////////////////////////////////////////////////////// // Serde types in rustdoc of other crates get linked to here. #![doc(html_root_url = "https://docs.rs/serde/1.0.85")] // Support using Serde without the standard library! #![cfg_attr(not(feature = "std"), no_std)] // Unstable functionality only if the user asks for it. For tracking and // discussion of these features please refer to this issue: // // https://github.com/serde-rs/serde/issues/812 #![cfg_attr(feature = "unstable", feature(specialization, never_type))] #![cfg_attr(feature = "alloc", feature(alloc))] #![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))] #![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))] // Ignored clippy lints #![cfg_attr( feature = "cargo-clippy", allow( cast_lossless, const_static_lifetime, doc_markdown, linkedlist, needless_pass_by_value, redundant_field_names, type_complexity, unreadable_literal, zero_prefixed_literal ) )] // Ignored clippy_pedantic lints #![cfg_attr(feature = "cargo-clippy", allow( // integer and float ser/de requires these sorts of casts cast_possible_truncation, cast_possible_wrap, cast_precision_loss, cast_sign_loss, // simplifies some macros invalid_upcast_comparisons, // things are often more readable this way decimal_literal_representation, module_name_repetitions, option_unwrap_used, result_unwrap_used, shadow_reuse, single_match_else, use_self, // not practical indexing_slicing, many_single_char_names, missing_docs_in_private_items, similar_names, // alternative is not stable empty_enum, use_debug, ))] // Blacklisted Rust lints. // // Compiler bug involving unused_imports: // https://github.com/rust-lang/rust/issues/51661 #![deny(missing_docs, /*unused_imports*/)] //////////////////////////////////////////////////////////////////////////////// #[cfg(feature = "alloc")] extern crate alloc; /// A facade around all the types we need from the `std`, `core`, and `alloc` /// crates. This avoids elaborate import wrangling having to happen in every /// module. mod lib { mod core { #[cfg(not(feature = "std"))] pub use core::*; #[cfg(feature = "std")] pub use std::*; } pub use self::core::{cmp, iter, mem, num, slice, str}; pub use self::core::{f32, f64}; pub use self::core::{i16, i32, i64, i8, isize}; pub use self::core::{u16, u32, u64, u8, usize}; pub use self::core::cell::{Cell, RefCell}; pub use self::core::clone::{self, Clone}; pub use self::core::convert::{self, From, Into}; pub use self::core::default::{self, Default}; pub use self::core::fmt::{self, Debug, Display}; pub use self::core::marker::{self, PhantomData}; pub use self::core::ops::Range; pub use self::core::option::{self, Option}; pub use self::core::result::{self, Result}; #[cfg(all(feature = "alloc", not(feature = "std")))] pub use alloc::borrow::{Cow, ToOwned}; #[cfg(feature = "std")] pub use std::borrow::{Cow, ToOwned}; #[cfg(all(feature = "alloc", not(feature = "std")))] pub use alloc::string::{String, ToString}; #[cfg(feature = "std")] pub use std::string::String; #[cfg(all(feature = "alloc", not(feature = "std")))] pub use alloc::vec::Vec; #[cfg(feature = "std")] pub use std::vec::Vec; #[cfg(all(feature = "alloc", not(feature = "std")))] pub use alloc::boxed::Box; #[cfg(feature = "std")] pub use std::boxed::Box; #[cfg(all(feature = "rc", feature = "alloc", not(feature = "std")))] pub use alloc::rc::{Rc, Weak as RcWeak}; #[cfg(all(feature = "rc", feature = "std"))] pub use std::rc::{Rc, Weak as RcWeak}; #[cfg(all(feature = "rc", feature = "alloc", not(feature = "std")))] pub use alloc::sync::{Arc, Weak as ArcWeak}; #[cfg(all(feature = "rc", feature = "std"))] pub use std::sync::{Arc, Weak as ArcWeak}; #[cfg(all(feature = "alloc", not(feature = "std")))] pub use alloc::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque}; #[cfg(feature = "std")] pub use std::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque}; #[cfg(feature = "std")] pub use std::{error, net}; #[cfg(feature = "std")] pub use std::collections::{HashMap, HashSet}; #[cfg(feature = "std")] pub use std::ffi::{CStr, CString, OsStr, OsString}; #[cfg(feature = "std")] pub use std::hash::{BuildHasher, Hash}; #[cfg(feature = "std")] pub use std::io::Write; #[cfg(feature = "std")] pub use std::num::Wrapping; #[cfg(feature = "std")] pub use std::path::{Path, PathBuf}; #[cfg(feature = "std")] pub use std::sync::{Mutex, RwLock}; #[cfg(feature = "std")] pub use std::time::{SystemTime, UNIX_EPOCH}; #[cfg(any(core_duration, feature = "std"))] pub use self::core::time::Duration; #[cfg(range_inclusive)] pub use self::core::ops::RangeInclusive; } //////////////////////////////////////////////////////////////////////////////// #[macro_use] mod macros; #[macro_use] mod integer128; pub mod de; pub mod ser; #[doc(inline)] pub use de::{Deserialize, Deserializer}; #[doc(inline)] pub use ser::{Serialize, Serializer}; // Generated code uses these to support no_std. Not public API. #[doc(hidden)] pub mod export; // Helpers used by generated code and doc tests. Not public API. #[doc(hidden)] pub mod private; // Re-export #[derive(Serialize, Deserialize)]. // // The reason re-exporting is not enabled by default is that disabling it would // be annoying for crates that provide handwritten impls or data formats. They // would need to disable default features and then explicitly re-enable std. #[cfg(feature = "serde_derive")] #[allow(unused_imports)] #[macro_use] extern crate serde_derive; #[cfg(feature = "serde_derive")] #[doc(hidden)] pub use serde_derive::*;