diff options
Diffstat (limited to 'library/stdarch/crates/std_detect/src/detect/macros.rs')
| -rw-r--r-- | library/stdarch/crates/std_detect/src/detect/macros.rs | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/library/stdarch/crates/std_detect/src/detect/macros.rs b/library/stdarch/crates/std_detect/src/detect/macros.rs index 09f9f524b52..8fc8b2b4060 100644 --- a/library/stdarch/crates/std_detect/src/detect/macros.rs +++ b/library/stdarch/crates/std_detect/src/detect/macros.rs @@ -5,16 +5,15 @@ macro_rules! features { @MACRO_ATTRS: $(#[$macro_attrs:meta])* $(@BIND_FEATURE_NAME: $bind_feature:tt; $feature_impl:tt; )* $(@NO_RUNTIME_DETECTION: $nort_feature:tt; )* - $(@FEATURE: $feature:ident: $feature_lit:tt; $(#[$feature_comment:meta])*)* + $(@FEATURE: #[$stability_attr:meta] $feature:ident: $feature_lit:tt; $(#[$feature_comment:meta])*)* ) => { #[macro_export] $(#[$macro_attrs])* - #[allow_internal_unstable(stdsimd_internal,stdsimd)] + #[allow_internal_unstable(stdsimd_internal,stdsimd,staged_api)] macro_rules! $macro_name { $( ($feature_lit) => { - cfg!(target_feature = $feature_lit) || - $crate::detect::check_for($crate::detect::Feature::$feature) + $crate::detect::__is_feature_detected::$feature() }; )* $( @@ -70,5 +69,26 @@ macro_rules! features { } } } + + /// Each function performs run-time feature detection for a single + /// feature. This allow us to use stability attributes on a per feature + /// basis. + /// + /// PLEASE: do not use this, it is an implementation detail subject + /// to change. + #[doc(hidden)] + pub mod __is_feature_detected { + $( + + /// PLEASE: do not use this, it is an implementation detail + /// subject to change. + #[doc(hidden)] + #[$stability_attr] + pub fn $feature() -> bool { + cfg!(target_feature = $feature_lit) || + $crate::detect::check_for($crate::detect::Feature::$feature) + } + )* + } }; } |