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// Copyright (c) 2016 The vulkano developers
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT
// license <LICENSE-MIT or https://opensource.org/licenses/MIT>,
// at your option. All files in the project carrying such
// notice may not be copied, modified, or distributed except
// according to those terms.
use crate::descriptor_set::DescriptorSetWithOffsets;
/// A collection of descriptor set objects.
pub unsafe trait DescriptorSetsCollection {
fn into_vec(self) -> Vec<DescriptorSetWithOffsets>;
}
unsafe impl DescriptorSetsCollection for () {
#[inline]
fn into_vec(self) -> Vec<DescriptorSetWithOffsets> {
vec![]
}
}
unsafe impl<T> DescriptorSetsCollection for T
where
T: Into<DescriptorSetWithOffsets>,
{
fn into_vec(self) -> Vec<DescriptorSetWithOffsets> {
vec![self.into()]
}
}
unsafe impl<T> DescriptorSetsCollection for Vec<T>
where
T: Into<DescriptorSetWithOffsets>,
{
fn into_vec(self) -> Vec<DescriptorSetWithOffsets> {
self.into_iter().map(|x| x.into()).collect()
}
}
macro_rules! impl_collection {
($first:ident $(, $others:ident)+) => (
unsafe impl<$first$(, $others)+> DescriptorSetsCollection for ($first, $($others),+)
where $first: Into<DescriptorSetWithOffsets>
$(, $others: Into<DescriptorSetWithOffsets>)*
{
#[inline]
#[allow(non_snake_case)]
fn into_vec(self) -> Vec<DescriptorSetWithOffsets> {
let ($first, $($others,)*) = self;
vec![$first.into() $(, $others.into())+]
}
}
impl_collection!($($others),+);
);
($i:ident) => ();
}
impl_collection!(Z, Y, X, W, V, U, T, S, R, Q, P, O, N, M, L, K, J, I, H, G, F, E, D, C, B, A);
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