1 #![allow(
2 clippy::blocks_in_if_conditions,
3 clippy::cast_possible_truncation,
4 clippy::map_unwrap_or,
5 clippy::needless_pass_by_value,
6 clippy::option_if_let_else,
7 clippy::range_plus_one,
8 clippy::single_match_else,
9 clippy::too_many_lines
10 )]
11
12 extern crate proc_macro;
13
14 mod ast;
15 mod attr;
16 mod expand;
17 mod fmt;
18 mod prop;
19 mod valid;
20
21 use proc_macro::TokenStream;
22 use syn::{parse_macro_input, DeriveInput};
23
24 #[proc_macro_derive(Error, attributes(backtrace, error, from, source))]
derive_error(input: TokenStream) -> TokenStream25 pub fn derive_error(input: TokenStream) -> TokenStream {
26 let input = parse_macro_input!(input as DeriveInput);
27 expand::derive(&input)
28 .unwrap_or_else(|err| err.to_compile_error())
29 .into()
30 }
31