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mod from_idn;
mod future;
mod prelude;
mod runtime;
use crate::prelude::*;
#[proc_macro_derive(Error)]
pub fn derive_error(item: proc_macro::TokenStream) -> proc_macro::TokenStream {
let item = syn::parse_macro_input!(item as syn::Item);
let (name, generics) = match &item {
syn::Item::Enum(item) => (&item.ident, &item.generics),
syn::Item::Struct(item) => (&item.ident, &item.generics),
_ => abort!(item.span(), "Expected enum or a struct."),
};
let generic_params = &generics.params;
let where_clause = &generics.where_clause;
let result = quote! {
impl<#generic_params> std::error::Error for #name<#generic_params> #where_clause {}
};
result.into()
}
#[proc_macro_derive(FromIdn, attributes(idn))]
#[proc_macro_error]
pub fn derive_from_idn(item: proc_macro::TokenStream) -> proc_macro::TokenStream {
from_idn::impl_for_item(syn::parse_macro_input!(item as syn::Item))
}
#[proc_macro]
#[proc_macro_error]
pub fn future_join(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
future::join(input).into()
}
#[proc_macro]
#[proc_macro_error]
pub fn future_race(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
future::race(input).into()
}
#[proc_macro_attribute]
pub fn runtime_main(
_: proc_macro::TokenStream,
item: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
runtime::main(item)
}