auto_enums_derive 0.3.7

This library provides an attribute macro like a wrapper of `#[derive]`, implementing the supported traits and passing unsupported traits to `#[derive]`.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

use proc_macro2::TokenStream;
use quote::quote;

use crate::utils::*;

pub(crate) const NAME: &[&str] = &["futures::AsyncRead"];

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

    derive_trait!(
        data,
        parse_quote!(#io::AsyncRead)?,
        parse_quote! {
            trait AsyncRead {
                #[inline]
                unsafe fn initializer(&self) -> #io::Initializer;
                #[inline]
                fn poll_read(&mut self, lw: &#root::task::LocalWaker, buf: &mut [u8]) -> #root::task::Poll<#root::result::Result<usize, #io::Error>>;
                #[inline]
                fn poll_vectored_read(&mut self, lw: &#root::task::LocalWaker, vec: &mut [&mut #io::IoVec]) -> #root::task::Poll<#root::result::Result<usize, #io::Error>>;
            }
        }?,
    )
}