1use proc_macro::TokenStream;
2use quote::quote;
3use syn::{parse_macro_input, DeriveInput};
4
5mod attributes;
6mod context;
7
8#[proc_macro_derive(ThinContext, attributes(display, bigerror))]
9pub fn derive_thin_context(input: TokenStream) -> TokenStream {
10 let input = parse_macro_input!(input as DeriveInput);
11 match context::thin(&input) {
12 Ok(result) => result.into(),
13 Err(e) => e.to_compile_error().into(),
14 }
15}
16
17#[proc_macro_attribute]
18pub fn derive_ctx(_attr: TokenStream, input: TokenStream) -> TokenStream {
19 let input: proc_macro2::TokenStream = input.into();
20 let output = quote! {
21 #[derive(crate::ThinContext)]
22 #[bigerror(crate)]
23 #input
24 };
25 output.into()
26}