extern crate proc_macro;
use proc_macro::TokenStream;
mod ctxt;
mod errors;
use quote::quote;
#[proc_macro_derive(JsonError, attributes(json_error))]
pub fn derive_api_error(input: TokenStream) -> TokenStream {
let input = syn::parse_macro_input!(input as syn::DeriveInput);
errors::expand_derive(&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)*)
}