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129 lines
4.7 KiB
Rust
129 lines
4.7 KiB
Rust
// edition:2018
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// aux-build: extern_crate.rs
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#![crate_name = "foo"]
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extern crate extern_crate;
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// @has foo/fn.extern_fn.html '//pre[@class="rust item-decl"]' \
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// 'pub fn extern_fn<const N: usize>() -> impl Iterator<Item = [u8; N]>'
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pub use extern_crate::extern_fn;
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// @has foo/struct.ExternTy.html '//pre[@class="rust item-decl"]' \
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// 'pub struct ExternTy<const N: usize> {'
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pub use extern_crate::ExternTy;
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// @has foo/type.TyAlias.html '//pre[@class="rust item-decl"]' \
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// 'type TyAlias<const N: usize> = ExternTy<N>;'
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pub use extern_crate::TyAlias;
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// @has foo/trait.WTrait.html '//pre[@class="rust item-decl"]' \
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// 'pub trait WTrait<const N: usize, const M: usize>'
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// @has - '//pre[@class="rust item-decl"]' 'fn hey<const P: usize>() -> usize'
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pub use extern_crate::WTrait;
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// @has foo/trait.Trait.html '//pre[@class="rust item-decl"]' \
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// 'pub trait Trait<const N: usize>'
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// @has - '//*[@id="impl-Trait%3C1%3E-for-u8"]//h3[@class="code-header"]' 'impl Trait<1> for u8'
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// @has - '//*[@id="impl-Trait%3C2%3E-for-u8"]//h3[@class="code-header"]' 'impl Trait<2> for u8'
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// @has - '//*[@id="impl-Trait%3C%7B1+%2B+2%7D%3E-for-u8"]//h3[@class="code-header"]' 'impl Trait<{1 + 2}> for u8'
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// @has - '//*[@id="impl-Trait%3CN%3E-for-%5Bu8;+N%5D"]//h3[@class="code-header"]' \
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// 'impl<const N: usize> Trait<N> for [u8; N]'
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pub trait Trait<const N: usize> {}
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impl Trait<1> for u8 {}
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impl Trait<2> for u8 {}
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impl Trait<{1 + 2}> for u8 {}
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impl<const N: usize> Trait<N> for [u8; N] {}
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// @has foo/struct.Foo.html '//pre[@class="rust item-decl"]' \
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// 'pub struct Foo<const N: usize> where u8: Trait<N>'
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pub struct Foo<const N: usize> where u8: Trait<N>;
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// @has foo/struct.Bar.html '//pre[@class="rust item-decl"]' 'pub struct Bar<T, const N: usize>('
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pub struct Bar<T, const N: usize>([T; N]);
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// @has foo/struct.Foo.html '//*[@id="impl-Foo%3CM%3E"]/h3[@class="code-header"]' 'impl<const M: usize> Foo<M>where u8: Trait<M>'
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impl<const M: usize> Foo<M> where u8: Trait<M> {
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// @has - '//*[@id="associatedconstant.FOO_ASSOC"]' 'pub const FOO_ASSOC: usize'
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pub const FOO_ASSOC: usize = M + 13;
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// @has - '//*[@id="method.hey"]' 'pub fn hey<const N: usize>(&self) -> Bar<u8, N>'
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pub fn hey<const N: usize>(&self) -> Bar<u8, N> {
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Bar([0; N])
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}
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}
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// @has foo/struct.Bar.html '//*[@id="impl-Bar%3Cu8,+M%3E"]/h3[@class="code-header"]' 'impl<const M: usize> Bar<u8, M>'
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impl<const M: usize> Bar<u8, M> {
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// @has - '//*[@id="method.hey"]' \
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// 'pub fn hey<const N: usize>(&self) -> Foo<N>where u8: Trait<N>'
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pub fn hey<const N: usize>(&self) -> Foo<N> where u8: Trait<N> {
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Foo
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}
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}
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// @has foo/fn.test.html '//pre[@class="rust item-decl"]' \
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// 'pub fn test<const N: usize>() -> impl Trait<N>where u8: Trait<N>'
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pub fn test<const N: usize>() -> impl Trait<N> where u8: Trait<N> {
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2u8
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}
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// @has foo/fn.a_sink.html '//pre[@class="rust item-decl"]' \
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// 'pub async fn a_sink<const N: usize>(v: [u8; N]) -> impl Trait<N>'
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pub async fn a_sink<const N: usize>(v: [u8; N]) -> impl Trait<N> {
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v
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}
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// @has foo/fn.b_sink.html '//pre[@class="rust item-decl"]' \
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// 'pub async fn b_sink<const N: usize>(_: impl Trait<N>)'
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pub async fn b_sink<const N: usize>(_: impl Trait<N>) {}
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// @has foo/fn.concrete.html '//pre[@class="rust item-decl"]' \
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// 'pub fn concrete() -> [u8; 22]'
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pub fn concrete() -> [u8; 3 + std::mem::size_of::<u64>() << 1] {
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Default::default()
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}
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// @has foo/type.Faz.html '//pre[@class="rust item-decl"]' \
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// 'type Faz<const N: usize> = [u8; N];'
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pub type Faz<const N: usize> = [u8; N];
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// @has foo/type.Fiz.html '//pre[@class="rust item-decl"]' \
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// 'type Fiz<const N: usize> = [[u8; N]; 48];'
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pub type Fiz<const N: usize> = [[u8; N]; 3 << 4];
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macro_rules! define_me {
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($t:tt<$q:tt>) => {
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pub struct $t<const $q: usize>([u8; $q]);
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}
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}
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// @has foo/struct.Foz.html '//pre[@class="rust item-decl"]' \
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// 'pub struct Foz<const N: usize>(/* private fields */);'
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define_me!(Foz<N>);
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trait Q {
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const ASSOC: usize;
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}
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impl<const N: usize> Q for [u8; N] {
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const ASSOC: usize = N;
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}
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// @has foo/fn.q_user.html '//pre[@class="rust item-decl"]' \
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// 'pub fn q_user() -> [u8; 13]'
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pub fn q_user() -> [u8; <[u8; 13] as Q>::ASSOC] {
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[0; <[u8; 13] as Q>::ASSOC]
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}
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// @has foo/union.Union.html '//pre[@class="rust item-decl"]' \
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// 'pub union Union<const N: usize>'
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pub union Union<const N: usize> {
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// @has - //pre "pub arr: [u8; N]"
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pub arr: [u8; N],
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// @has - //pre "pub another_arr: [(); N]"
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pub another_arr: [(); N],
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}
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// @has foo/enum.Enum.html '//pre[@class="rust item-decl"]' \
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// 'pub enum Enum<const N: usize>'
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pub enum Enum<const N: usize> {
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// @has - //pre "Variant([u8; N])"
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Variant([u8; N]),
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// @has - //pre "EmptyVariant"
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EmptyVariant,
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}
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