zerocopy-derive 0.6.6

Custom derive for traits from the zerocopy crate
Documentation 
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// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#![allow(warnings)]

mod util;

use std::{marker::PhantomData, option::IntoIter};

use {static_assertions::assert_impl_all, zerocopy::FromBytes};

use crate::util::AU16;

// A struct is `FromBytes` if:
// - all fields are `FromBytes`

#[derive(FromBytes)]
struct Zst;

assert_impl_all!(Zst: FromBytes);

#[derive(FromBytes)]
struct One {
    a: u8,
}

assert_impl_all!(One: FromBytes);

#[derive(FromBytes)]
struct Two {
    a: u8,
    b: Zst,
}

assert_impl_all!(Two: FromBytes);

#[derive(FromBytes)]
struct Unsized {
    a: [u8],
}

assert_impl_all!(Unsized: FromBytes);

#[derive(FromBytes)]
struct TypeParams<'a, T: ?Sized, I: Iterator> {
    a: I::Item,
    b: u8,
    c: PhantomData<&'a [u8]>,
    d: PhantomData<&'static str>,
    e: PhantomData<String>,
    f: T,
}

assert_impl_all!(TypeParams<'static, (), IntoIter<()>>: FromBytes);
assert_impl_all!(TypeParams<'static, AU16, IntoIter<()>>: FromBytes);
assert_impl_all!(TypeParams<'static, [AU16], IntoIter<()>>: FromBytes);