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| </pre><pre class="rust"><code><span class="doccomment">//! # 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. |
| //! |
| //! ## 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. |
| //! - [Postcard], a no\_std and embedded-systems friendly compact binary format. |
| //! - [CBOR], a Concise Binary Object Representation designed for small message |
| //! size without the need for version negotiation. |
| //! - [YAML], a self-proclaimed 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. |
| //! - [JSON5], a superset of JSON including some productions from ES5. |
| //! - [URL] query strings, in the x-www-form-urlencoded format. |
| //! - [Starlark], the format used for describing build targets by the Bazel and |
| //! Buck build systems. *(serialization only)* |
| //! - [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)* |
| //! - [S-expressions], the textual representation of code and data used by the |
| //! Lisp language family. |
| //! - [D-Bus]'s binary wire format. |
| //! - [FlexBuffers], the schemaless cousin of Google's FlatBuffers zero-copy |
| //! serialization format. |
| //! - [Bencode], a simple binary format used in the BitTorrent protocol. |
| //! - [Token streams], for processing Rust procedural macro input. |
| //! *(deserialization only)* |
| //! - [DynamoDB Items], the format used by [rusoto_dynamodb] to transfer data to |
| //! and from DynamoDB. |
| //! - [Hjson], a syntax extension to JSON designed around human reading and |
| //! editing. *(deserialization only)* |
| //! |
| //! [JSON]: https://github.com/serde-rs/json |
| //! [Postcard]: https://github.com/jamesmunns/postcard |
| //! [CBOR]: https://github.com/enarx/ciborium |
| //! [YAML]: https://github.com/dtolnay/serde-yaml |
| //! [MessagePack]: https://github.com/3Hren/msgpack-rust |
| //! [TOML]: https://docs.rs/toml |
| //! [Pickle]: https://github.com/birkenfeld/serde-pickle |
| //! [RON]: https://github.com/ron-rs/ron |
| //! [BSON]: https://github.com/mongodb/bson-rust |
| //! [Avro]: https://docs.rs/apache-avro |
| //! [JSON5]: https://github.com/callum-oakley/json5-rs |
| //! [URL]: https://docs.rs/serde_qs |
| //! [Starlark]: https://github.com/dtolnay/serde-starlark |
| //! [Envy]: https://github.com/softprops/envy |
| //! [Envy Store]: https://github.com/softprops/envy-store |
| //! [Cargo]: https://doc.rust-lang.org/cargo/reference/manifest.html |
| //! [AWS Parameter Store]: https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-parameter-store.html |
| //! [S-expressions]: https://github.com/rotty/lexpr-rs |
| //! [D-Bus]: https://docs.rs/zvariant |
| //! [FlexBuffers]: https://github.com/google/flatbuffers/tree/master/rust/flexbuffers |
| //! [Bencode]: https://github.com/P3KI/bendy |
| //! [Token streams]: https://github.com/oxidecomputer/serde_tokenstream |
| //! [DynamoDB Items]: https://docs.rs/serde_dynamo |
| //! [rusoto_dynamodb]: https://docs.rs/rusoto_dynamodb |
| //! [Hjson]: https://github.com/Canop/deser-hjson |
| |
| </span><span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| // Serde types in rustdoc of other crates get linked to here. |
| </span><span class="attribute">#![doc(html_root_url = <span class="string">"https://docs.rs/serde/1.0.163"</span>)] |
| </span><span class="comment">// Support using Serde without the standard library! |
| </span><span class="attribute">#![cfg_attr(not(feature = <span class="string">"std"</span>), no_std)] |
| </span><span class="comment">// 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 |
| </span><span class="attribute">#![cfg_attr(feature = <span class="string">"unstable"</span>, feature(error_in_core, never_type))] |
| #![allow(unknown_lints, bare_trait_objects, deprecated)] |
| #![cfg_attr(feature = <span class="string">"cargo-clippy"</span>, allow(renamed_and_removed_lints))] |
| </span><span class="comment">// Ignored clippy and clippy_pedantic lints |
| </span><span class="attribute">#![cfg_attr( |
| feature = <span class="string">"cargo-clippy"</span>, |
| allow( |
| <span class="comment">// clippy bug: https://github.com/rust-lang/rust-clippy/issues/5704 |
| </span>unnested_or_patterns, |
| <span class="comment">// clippy bug: https://github.com/rust-lang/rust-clippy/issues/7768 |
| </span>semicolon_if_nothing_returned, |
| <span class="comment">// not available in our oldest supported compiler |
| </span>empty_enum, |
| type_repetition_in_bounds, <span class="comment">// https://github.com/rust-lang/rust-clippy/issues/8772 |
| // integer and float ser/de requires these sorts of casts |
| </span>cast_possible_truncation, |
| cast_possible_wrap, |
| cast_sign_loss, |
| <span class="comment">// things are often more readable this way |
| </span>cast_lossless, |
| module_name_repetitions, |
| option_if_let_else, |
| single_match_else, |
| type_complexity, |
| use_self, |
| zero_prefixed_literal, |
| <span class="comment">// correctly used |
| </span>derive_partial_eq_without_eq, |
| enum_glob_use, |
| explicit_auto_deref, |
| let_underscore_untyped, |
| map_err_ignore, |
| new_without_default, |
| result_unit_err, |
| wildcard_imports, |
| <span class="comment">// not practical |
| </span>needless_pass_by_value, |
| similar_names, |
| too_many_lines, |
| <span class="comment">// preference |
| </span>doc_markdown, |
| unseparated_literal_suffix, |
| <span class="comment">// false positive |
| </span>needless_doctest_main, |
| <span class="comment">// noisy |
| </span>missing_errors_doc, |
| must_use_candidate, |
| ) |
| )] |
| </span><span class="comment">// Rustc lints. |
| </span><span class="attribute">#![deny(missing_docs, unused_imports)] |
| |
| </span><span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">extern crate </span>alloc; |
| |
| <span class="doccomment">/// 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. |
| </span><span class="kw">mod </span>lib { |
| <span class="kw">mod </span>core { |
| <span class="attribute">#[cfg(not(feature = <span class="string">"std"</span>))] |
| </span><span class="kw">pub use </span>core::<span class="kw-2">*</span>; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::<span class="kw-2">*</span>; |
| } |
| |
| <span class="kw">pub use </span><span class="self">self</span>::core::{cmp, iter, mem, num, ptr, slice, str}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::{f32, f64}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::{i16, i32, i64, i8, isize}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::{u16, u32, u64, u8, usize}; |
| |
| <span class="kw">pub use </span><span class="self">self</span>::core::cell::{Cell, RefCell}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::clone::{<span class="self">self</span>, Clone}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::convert::{<span class="self">self</span>, From, Into}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::default::{<span class="self">self</span>, Default}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::fmt::{<span class="self">self</span>, Debug, Display}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::marker::{<span class="self">self</span>, PhantomData}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::num::Wrapping; |
| <span class="kw">pub use </span><span class="self">self</span>::core::ops::Range; |
| <span class="kw">pub use </span><span class="self">self</span>::core::option::{<span class="self">self</span>, <span class="prelude-ty">Option</span>}; |
| <span class="kw">pub use </span><span class="self">self</span>::core::result::{<span class="self">self</span>, <span class="prelude-ty">Result</span>}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::borrow::{Cow, ToOwned}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::borrow::{Cow, ToOwned}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::string::{String, ToString}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::string::{String, ToString}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::vec::Vec; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::vec::Vec; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::boxed::Box; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::boxed::Box; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"rc"</span>, feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::rc::{Rc, Weak <span class="kw">as </span>RcWeak}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"rc"</span>, feature = <span class="string">"std"</span>))] |
| </span><span class="kw">pub use </span>std::rc::{Rc, Weak <span class="kw">as </span>RcWeak}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"rc"</span>, feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::sync::{Arc, Weak <span class="kw">as </span>ArcWeak}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"rc"</span>, feature = <span class="string">"std"</span>))] |
| </span><span class="kw">pub use </span>std::sync::{Arc, Weak <span class="kw">as </span>ArcWeak}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::collections::{BTreeMap, BTreeSet, BinaryHeap, LinkedList, VecDeque}; |
| |
| <span class="attribute">#[cfg(all(not(no_core_cstr), not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>core::ffi::CStr; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::ffi::CStr; |
| |
| <span class="attribute">#[cfg(all(not(no_core_cstr), feature = <span class="string">"alloc"</span>, not(feature = <span class="string">"std"</span>)))] |
| </span><span class="kw">pub use </span>alloc::ffi::CString; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::ffi::CString; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::{error, net}; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::collections::{HashMap, HashSet}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::ffi::{OsStr, OsString}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::hash::{BuildHasher, Hash}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::io::Write; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::path::{Path, PathBuf}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::sync::{Mutex, RwLock}; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span>std::time::{SystemTime, UNIX_EPOCH}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_collections_bound), no_ops_bound))] |
| </span><span class="kw">pub use </span>std::collections::Bound; |
| |
| <span class="attribute">#[cfg(not(no_core_reverse))] |
| </span><span class="kw">pub use </span><span class="self">self</span>::core::cmp::Reverse; |
| |
| <span class="attribute">#[cfg(not(no_ops_bound))] |
| </span><span class="kw">pub use </span><span class="self">self</span>::core::ops::Bound; |
| |
| <span class="attribute">#[cfg(not(no_range_inclusive))] |
| </span><span class="kw">pub use </span><span class="self">self</span>::core::ops::RangeInclusive; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, no_target_has_atomic, not(no_std_atomic)))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{ |
| AtomicBool, AtomicI16, AtomicI32, AtomicI8, AtomicIsize, AtomicU16, AtomicU32, AtomicU8, |
| AtomicUsize, Ordering, |
| }; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, no_target_has_atomic, not(no_std_atomic64)))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{AtomicI64, AtomicU64}; |
| |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_target_has_atomic)))] |
| </span><span class="kw">pub use </span>std::sync::atomic::Ordering; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_target_has_atomic), target_has_atomic = <span class="string">"8"</span>))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{AtomicBool, AtomicI8, AtomicU8}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_target_has_atomic), target_has_atomic = <span class="string">"16"</span>))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{AtomicI16, AtomicU16}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_target_has_atomic), target_has_atomic = <span class="string">"32"</span>))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{AtomicI32, AtomicU32}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_target_has_atomic), target_has_atomic = <span class="string">"64"</span>))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{AtomicI64, AtomicU64}; |
| <span class="attribute">#[cfg(all(feature = <span class="string">"std"</span>, not(no_target_has_atomic), target_has_atomic = <span class="string">"ptr"</span>))] |
| </span><span class="kw">pub use </span>std::sync::atomic::{AtomicIsize, AtomicUsize}; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, not(no_core_duration)))] |
| </span><span class="kw">pub use </span><span class="self">self</span>::core::time::Duration; |
| } |
| |
| <span class="comment">// None of this crate's error handling needs the `From::from` error conversion |
| // performed implicitly by the `?` operator or the standard library's `try!` |
| // macro. This simplified macro gives a 5.5% improvement in compile time |
| // compared to standard `try!`, and 9% improvement compared to `?`. |
| </span><span class="macro">macro_rules! </span><span class="kw">try </span>{ |
| (<span class="macro-nonterminal">$expr</span>:expr) => { |
| <span class="kw">match </span><span class="macro-nonterminal">$expr </span>{ |
| <span class="prelude-val">Ok</span>(val) => val, |
| <span class="prelude-val">Err</span>(err) => <span class="kw">return </span><span class="prelude-val">Err</span>(err), |
| } |
| }; |
| } |
| |
| <span class="comment">//////////////////////////////////////////////////////////////////////////////// |
| |
| </span><span class="attribute">#[macro_use] |
| </span><span class="kw">mod </span>macros; |
| |
| <span class="attribute">#[macro_use] |
| </span><span class="kw">mod </span>integer128; |
| |
| <span class="kw">pub mod </span>de; |
| <span class="kw">pub mod </span>ser; |
| |
| <span class="attribute">#[doc(inline)] |
| </span><span class="kw">pub use </span>de::{Deserialize, Deserializer}; |
| <span class="attribute">#[doc(inline)] |
| </span><span class="kw">pub use </span>ser::{Serialize, Serializer}; |
| |
| <span class="comment">// Used by generated code and doc tests. Not public API. |
| </span><span class="attribute">#[doc(hidden)] |
| #[path = <span class="string">"private/mod.rs"</span>] |
| </span><span class="kw">pub mod </span>__private; |
| |
| <span class="attribute">#[allow(unused_imports)] |
| </span><span class="kw">use </span><span class="self">self</span>::__private <span class="kw">as </span>export; |
| <span class="attribute">#[allow(unused_imports)] |
| </span><span class="kw">use </span><span class="self">self</span>::__private <span class="kw">as </span>private; |
| |
| <span class="attribute">#[path = <span class="string">"de/seed.rs"</span>] |
| </span><span class="kw">mod </span>seed; |
| |
| <span class="attribute">#[cfg(not(any(feature = <span class="string">"std"</span>, feature = <span class="string">"unstable"</span>)))] |
| </span><span class="kw">mod </span>std_error; |
| |
| <span class="comment">// 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. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"serde_derive"</span>)] |
| #[allow(unused_imports)] |
| #[macro_use] |
| </span><span class="kw">extern crate </span>serde_derive; |
| |
| <span class="doccomment">/// Derive macro available if serde is built with `features = ["derive"]`. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"serde_derive"</span>)] |
| </span><span class="kw">pub use </span>serde_derive::{Deserialize, Serialize}; |
| |
| <span class="attribute">#[cfg(all(not(no_serde_derive), any(feature = <span class="string">"std"</span>, feature = <span class="string">"alloc"</span>)))] |
| </span><span class="kw">mod </span>actually_private { |
| <span class="kw">pub struct </span>T; |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="serde" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
