[−][src]Struct rustc_ap_syntax::sess::GatedSpans

pub struct GatedSpans {
    pub spans: Lock<HashMap<Symbol, Vec<Span>, BuildHasherDefault<FxHasher>>>,
}

Collected spans during parsing for places where a certain feature was used and should be feature gated accordingly in check_crate.

Fields

spans: Lock<HashMap<Symbol, Vec<Span>, BuildHasherDefault<FxHasher>>>

Methods

impl GatedSpans[src]

pub fn gate(&self, feature: Symbol, span: Span)[src]

Feature gate the given span under the given feature which is same Symbol used in active.rs.

pub fn ungate_last(&self, feature: Symbol, span: Span)[src]

Ungate the last span under the given feature. Panics if the given span wasn't the last one.

Using this is discouraged unless you have a really good reason to.

pub fn is_ungated(&self, feature: Symbol) -> bool[src]

Is the provided feature gate ungated currently?

Using this is discouraged unless you have a really good reason to.

pub fn merge(
    &self,
    spans: HashMap<Symbol, Vec<Span>, BuildHasherDefault<FxHasher>>
)[src]

Prepend the given set of spans onto the set in self.

Trait Implementations

impl Default for GatedSpans[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> Erased for T[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<E> SpecializationError for E[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.