simple_generators_macros 0.2.1

helper crate for simple_generators, containing the macro
Documentation 
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#![feature(coroutines, coroutine_trait, stmt_expr_attributes)]

extern crate proc_macro;

use self::proc_macro::TokenStream;
use quote::quote;
use syn;

#[proc_macro_attribute]
pub fn generator(_meta: TokenStream, input: TokenStream) -> TokenStream {
    let mut input: syn::ItemFn = syn::parse(input).unwrap();
    let block = input.block;
    input.block = syn::parse(
        (quote! {{
            self::GeneratorIteratorAdapter({
                #[coroutine] move || { #block }
            })
        }})
        .into(),
    )
    .unwrap();

    let output = quote! {  #input  };
    output.into()
}