1 //! This is a fixture we use for tests that need lang items.
3 //! We want to include the minimal subset of core for each test, so this file
4 //! supports "conditional compilation". Tests use the following syntax to include minicore:
6 //! //- minicore: flag1, flag2
8 //! We then strip all the code marked with other flags.
16 //! coerce_unsized: unsize
22 #[rustc_specialization_trait]
28 pub trait Unsize<T: ?Sized> {}
33 // region:coerce_unsized
35 use crate::marker::Unsize;
37 #[lang = "coerce_unsized"]
38 pub trait CoerceUnsized<T: ?Sized> {}
40 impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a mut U> for &'a mut T {}
41 impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b mut T {}
42 impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for &'a mut T {}
43 impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*const U> for &'a mut T {}
45 impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
46 impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*const U> for &'a T {}
48 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for *mut T {}
49 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*const U> for *mut T {}
50 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*const U> for *const T {}
52 pub use self::unsize::CoerceUnsized;
53 // endregion:coerce_unsized
59 #[lang = "deref_target"]
61 fn deref(&self) -> &Self::Target;
64 pub use self::deref::Deref;
73 pub struct Range<Idx> {
79 pub struct RangeFrom<Idx> {
84 pub struct RangeTo<Idx> {
88 #[lang = "RangeInclusive"]
89 pub struct RangeInclusive<Idx> {
90 pub(crate) start: Idx,
92 pub(crate) exhausted: bool,
95 #[lang = "RangeToInclusive"]
96 pub struct RangeToInclusive<Idx> {
100 pub use self::range::{Range, RangeFrom, RangeFull, RangeTo};
101 pub use self::range::{RangeInclusive, RangeToInclusive};
109 pub fn len(&self) -> usize {
118 pub use crate::marker::Sized; // :sized
122 pub use super::v1::*;
126 pub use super::v1::*;
130 pub use super::v1::*;