Module lib_features 

Detecting lib features (i.e., features that are not lang features).

These are declared using stability attributes (e.g., #[stable (..)] and #[unstable (..)]), but are not declared in one single location (unlike lang features), which means we need to collect them instead.

Re-exports

use rustc_attr_ir::Attribute; 🔒

use rustc_attr_ir::AttributeKind; 🔒

use rustc_attr_ir::StabilityLevel; 🔒

use rustc_attr_ir::StableSince; 🔒

use rustc_hir::intravisit::Visitor; 🔒

use rustc_middle::hir::nested_filter; 🔒

use rustc_middle::middle::lib_features::FeatureStability; 🔒

use rustc_middle::middle::lib_features::LibFeatures; 🔒

use rustc_middle::query::LocalCrate; 🔒

use rustc_middle::query::Providers; 🔒

use rustc_middle::ty::TyCtxt; 🔒

use rustc_span::Span; 🔒

use rustc_span::Symbol; 🔒

use rustc_span::sym; 🔒

use crate::diagnostics::FeaturePreviouslyDeclared; 🔒

use crate::diagnostics::FeatureStableTwice; 🔒

Structs

LibFeatureCollector 🔒

Functions

lib_features 🔒

provide 🔒