src/vendor/serde_derive/src/lib.rs

   1 // Copyright 2017 Serde Developers
   2 //
   3 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   4 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   5 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   6 // option. This file may not be copied, modified, or distributed
   7 // except according to those terms.
   8
   9 //! This crate provides Serde's two derive macros.
  10 //!
  11 //! ```rust,ignore
  12 //! #[derive(Serialize, Deserialize)]
  13 //! ```
  14 //!
  15 //! Please refer to [https://serde.rs/derive.html] for how to set this up.
  16 //!
  17 //! [https://serde.rs/derive.html]: https://serde.rs/derive.html
  18
  19 #![doc(html_root_url = "https://docs.rs/serde_derive/1.0.15")]
  20
  21 #![cfg_attr(feature = "cargo-clippy", allow(too_many_arguments))]
  22 #![cfg_attr(feature = "cargo-clippy", allow(used_underscore_binding))]
  23
  24 // The `quote!` macro requires deep recursion.
  25 #![recursion_limit = "192"]
  26
  27 extern crate syn;
  28 #[macro_use]
  29 extern crate quote;
  30
  31 extern crate serde_derive_internals as internals;
  32
  33 extern crate proc_macro;
  34 use proc_macro::TokenStream;
  35
  36 #[macro_use]
  37 mod bound;
  38 #[macro_use]
  39 mod fragment;
  40
  41 mod ser;
  42 mod de;
  43
  44 #[proc_macro_derive(Serialize, attributes(serde))]
  45 pub fn derive_serialize(input: TokenStream) -> TokenStream {
  46     let input = syn::parse_derive_input(&input.to_string()).unwrap();
  47     match ser::expand_derive_serialize(&input) {
  48         Ok(expanded) => expanded.parse().unwrap(),
  49         Err(msg) => panic!(msg),
  50     }
  51 }
  52
  53 #[proc_macro_derive(Deserialize, attributes(serde))]
  54 pub fn derive_deserialize(input: TokenStream) -> TokenStream {
  55     let input = syn::parse_derive_input(&input.to_string()).unwrap();
  56     match de::expand_derive_deserialize(&input) {
  57         Ok(expanded) => expanded.parse().unwrap(),
  58         Err(msg) => panic!(msg),
  59     }
  60 }