bjoernager/rust
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Move the set of features to the features query.

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This commit is contained in:
Camille GILLOT 2022-01-16 16:25:47 +01:00
parent 4566094913
commit fbcf7d415b
4 changed files with 13 additions and 16 deletions
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8
compiler/rustc_feature/src/active.rs
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@ -2,6 +2,7 @@
use super::{to_nonzero, Feature, State};
use rustc_data_structures::fx::FxHashSet;
use rustc_span::edition::Edition;
use rustc_span::symbol::{sym, Symbol};
use rustc_span::Span;
@ -47,6 +48,8 @@ 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>,
$(
$(#[doc = $doc])*
pub $feature: bool
@ -58,6 +61,11 @@ 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 enabled?
///
/// Panics if the symbol doesn't correspond to a declared feature.