diff options
Diffstat (limited to 'compiler/rustc_feature/src/active.rs')
| -rw-r--r-- | compiler/rustc_feature/src/active.rs | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs index 3acc7308e8d..07101778ef1 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/active.rs @@ -60,8 +60,9 @@ macro_rules! declare_features { pub declared_lang_features: Vec<(Symbol, Span, Option<Symbol>)>, /// `#![feature]` attrs for non-language (library) features. pub declared_lib_features: Vec<(Symbol, Span)>, - /// Features enabled for this crate. - pub active_features: FxHashSet<Symbol>, + /// `declared_lang_features` + `declared_lib_features`. + pub declared_features: FxHashSet<Symbol>, + /// Individual features (unstable only). $( $(#[doc = $doc])* pub $feature: bool @@ -73,12 +74,14 @@ macro_rules! declare_features { $(f(stringify!($feature), self.$feature);)+ } - /// Is the given feature active? - pub fn active(&self, feature: Symbol) -> bool { - self.active_features.contains(&feature) + /// Is the given feature explicitly declared, i.e. named in a + /// `#![feature(...)]` within the code? + pub fn declared(&self, feature: Symbol) -> bool { + self.declared_features.contains(&feature) } - /// Is the given feature enabled? + /// Is the given feature enabled, i.e. declared or automatically + /// enabled due to the edition? /// /// Panics if the symbol doesn't correspond to a declared feature. pub fn enabled(&self, feature: Symbol) -> bool { |