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

//! This crate provides Serde's two derive macros.
//!
//! ```edition2018
//! # use serde_derive::{Serialize, Deserialize};
//! #
//! #[derive(Serialize, Deserialize)]
//! # struct S;
//! #
//! # fn main() {}
//! ```
//!
//! Please refer to [https://serde.rs/derive.html] for how to set this up.
//!
//! [https://serde.rs/derive.html]: https://serde.rs/derive.html

#![doc(html_root_url = "https://docs.rs/serde_derive/1.0.124")]
#![allow(unknown_lints, bare_trait_objects)]
#![deny(clippy::all, clippy::pedantic)]
// Ignored clippy lints
#![allow(
    clippy::cognitive_complexity,
    clippy::enum_variant_names,
    // clippy bug: https://github.com/rust-lang/rust-clippy/issues/6797
    clippy::manual_map,
    clippy::match_like_matches_macro,
    clippy::needless_pass_by_value,
    clippy::too_many_arguments,
    clippy::trivially_copy_pass_by_ref,
    clippy::used_underscore_binding,
    clippy::wildcard_in_or_patterns,
    // clippy bug: https://github.com/rust-lang/rust-clippy/issues/5704
    clippy::unnested_or_patterns,
)]
// Ignored clippy_pedantic lints
#![allow(
    clippy::cast_possible_truncation,
    clippy::checked_conversions,
    clippy::doc_markdown,
    clippy::enum_glob_use,
    clippy::filter_map,
    clippy::indexing_slicing,
    clippy::items_after_statements,
    clippy::let_underscore_drop,
    clippy::map_err_ignore,
    clippy::match_same_arms,
    clippy::module_name_repetitions,
    clippy::must_use_candidate,
    clippy::option_if_let_else,
    clippy::similar_names,
    clippy::single_match_else,
    clippy::struct_excessive_bools,
    clippy::too_many_lines,
    clippy::unseparated_literal_suffix,
    clippy::unused_self,
    clippy::use_self,
    clippy::wildcard_imports
)]

#[macro_use]
extern crate quote;
#[macro_use]
extern crate syn;

extern crate proc_macro;
extern crate proc_macro2;

mod internals;

use proc_macro::TokenStream;
use syn::DeriveInput;

#[macro_use]
mod bound;
#[macro_use]
mod fragment;

mod de;
mod dummy;
mod pretend;
mod ser;
mod try;

#[proc_macro_derive(Serialize, attributes(serde))]
pub fn derive_serialize(input: TokenStream) -> TokenStream {
    let mut input = parse_macro_input!(input as DeriveInput);
    ser::expand_derive_serialize(&mut input)
        .unwrap_or_else(to_compile_errors)
        .into()
}

#[proc_macro_derive(Deserialize, attributes(serde))]
pub fn derive_deserialize(input: TokenStream) -> TokenStream {
    let mut input = parse_macro_input!(input as DeriveInput);
    de::expand_derive_deserialize(&mut input)
        .unwrap_or_else(to_compile_errors)
        .into()
}

fn to_compile_errors(errors: Vec<syn::Error>) -> proc_macro2::TokenStream {
    let compile_errors = errors.iter().map(syn::Error::to_compile_error);
    quote!(#(#compile_errors)*)
}