auto_enums_derive 0.3.3

This library provides an attribute macro like a wrapper of `#[derive]`, implementing the supported traits and passing unsupported traits to `#[derive]`.
Documentation 
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use proc_macro2::TokenStream;
use quote::quote;

use crate::utils::*;

pub(crate) const NAME: &[&str] = &["futures01::Stream"];

pub(crate) fn derive(data: &Data) -> Result<TokenStream> {
    let root = std_root();
    let crate_ = quote!(::futures);

    derive_trait!(
        data,
        parse_quote!(#crate_::stream::Stream)?,
        parse_quote! {
            trait Stream {
                type Item;
                type Error;
                #[inline]
                fn poll(&mut self) -> #crate_::Poll<#root::option::Option<Self::Item>, Self::Error>;
            }
        }?,
    )
}