blob: d3e2fa53df4a8e275b6f0fa0f465f8e2dc604dc0 [file] [log] [blame]
// Copyright 2022 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.
//! Provides [`ArbitraryFromBytes`] to support generation of arbitrary instances
//! of [`zerocopy`]-friendly types.
use arbitrary::{Result, Unstructured};
use zerocopy::FromBytes;
/// Extension trait that allows construction of arbitrary values via
/// [`zerocopy::FromBytes`].
/// [`ArbitraryFromBytes`] has a blanket implementation for all types that
/// implement `zerocopy::FromBytes`.
pub trait ArbitraryFromBytes<'a>: FromBytes + Sized {
/// Constructs an arbitrary instance of `Self` from the provided
/// unstructured data.
fn arbitrary_from_bytes(u: &mut Unstructured<'a>) -> Result<Self>;
impl<'a, A> ArbitraryFromBytes<'a> for A
A: FromBytes + 'a,
fn arbitrary_from_bytes(u: &mut Unstructured<'a>) -> Result<Self> {
let mut bytes = vec![0u8; std::mem::size_of::<A>()];
u.fill_buffer(&mut bytes)?;