| use crate::expand::call_site_ident; |
| use proc_macro2::TokenStream; |
| use quote::quote; |
| use syn::DeriveInput; |
| |
| pub(crate) fn expand(input: &DeriveInput, error: syn::Error) -> TokenStream { |
| let ty = call_site_ident(&input.ident); |
| let (impl_generics, ty_generics, where_clause) = input.generics.split_for_impl(); |
| |
| let error = error.to_compile_error(); |
| |
| quote! { |
| #error |
| |
| #[allow(unused_qualifications)] |
| #[automatically_derived] |
| impl #impl_generics ::thiserror::__private::Error for #ty #ty_generics #where_clause |
| where |
| // Work around trivial bounds being unstable. |
| // https://github.com/rust-lang/rust/issues/48214 |
| for<'workaround> #ty #ty_generics: ::core::fmt::Debug, |
| {} |
| |
| #[allow(unused_qualifications)] |
| #[automatically_derived] |
| impl #impl_generics ::core::fmt::Display for #ty #ty_generics #where_clause { |
| fn fmt(&self, __formatter: &mut ::core::fmt::Formatter) -> ::core::fmt::Result { |
| ::core::unreachable!() |
| } |
| } |
| } |
| } |