Deprecate signed std::num::NonZeroI* with a call for use cases
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@ -86,6 +86,7 @@
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#![feature(lang_items)]
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#![feature(link_llvm_intrinsics)]
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#![feature(exhaustive_patterns)]
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#![feature(macro_at_most_once_rep)]
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#![feature(no_core)]
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#![feature(on_unimplemented)]
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#![feature(optin_builtin_traits)]
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@ -23,6 +23,7 @@ macro_rules! impl_nonzero_fmt {
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( #[$stability: meta] ( $( $Trait: ident ),+ ) for $Ty: ident ) => {
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$(
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#[$stability]
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#[allow(deprecated)]
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impl fmt::$Trait for $Ty {
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#[inline]
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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@ -34,7 +35,7 @@ macro_rules! impl_nonzero_fmt {
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}
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macro_rules! nonzero_integers {
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( #[$stability: meta] $( $Ty: ident($Int: ty); )+ ) => {
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( #[$stability: meta] #[$deprecation: meta] $( $Ty: ident($Int: ty); )+ ) => {
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$(
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/// An integer that is known not to equal zero.
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///
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@ -46,6 +47,7 @@ macro_rules! nonzero_integers {
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/// assert_eq!(size_of::<Option<std::num::NonZeroU32>>(), size_of::<u32>());
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/// ```
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#[$stability]
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#[$deprecation]
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#[allow(deprecated)]
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#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
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pub struct $Ty(NonZero<$Int>);
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@ -93,12 +95,26 @@ macro_rules! nonzero_integers {
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nonzero_integers! {
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#[unstable(feature = "nonzero", issue = "49137")]
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NonZeroU8(u8); NonZeroI8(i8);
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NonZeroU16(u16); NonZeroI16(i16);
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NonZeroU32(u32); NonZeroI32(i32);
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NonZeroU64(u64); NonZeroI64(i64);
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NonZeroU128(u128); NonZeroI128(i128);
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NonZeroUsize(usize); NonZeroIsize(isize);
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#[allow(deprecated)] // Redundant, works around "error: inconsistent lockstep iteration"
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NonZeroU8(u8);
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NonZeroU16(u16);
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NonZeroU32(u32);
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NonZeroU64(u64);
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NonZeroU128(u128);
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NonZeroUsize(usize);
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}
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nonzero_integers! {
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#[unstable(feature = "nonzero", issue = "49137")]
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#[rustc_deprecated(since = "1.26.0", reason = "\
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signed non-zero integers are considered for removal due to lack of known use cases. \
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If you’re using them, please comment on https://github.com/rust-lang/rust/issues/49137")]
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NonZeroI8(i8);
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NonZeroI16(i16);
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NonZeroI32(i32);
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NonZeroI64(i64);
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NonZeroI128(i128);
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NonZeroIsize(isize);
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}
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/// Provides intentionally-wrapped arithmetic on `T`.
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@ -22,6 +22,7 @@ pub use core::num::{FpCategory, ParseIntError, ParseFloatError, TryFromIntError}
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pub use core::num::Wrapping;
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#[unstable(feature = "nonzero", issue = "49137")]
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#[allow(deprecated)]
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pub use core::num::{
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NonZeroU8, NonZeroI8, NonZeroU16, NonZeroI16, NonZeroU32, NonZeroI32,
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NonZeroU64, NonZeroI64, NonZeroU128, NonZeroI128, NonZeroUsize, NonZeroIsize,
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