Struct rustc_session::parse::GatedSpans

pub struct GatedSpans {
    pub spans: Lock<FxHashMap<Symbol, Vec<Span>>>,
}

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

Fields

spans: Lock<FxHashMap<Symbol, Vec<Span>>>

Implementations

impl GatedSpans

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

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)

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

Is the provided feature gate ungated currently?

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

pub fn merge(&self, spans: FxHashMap<Symbol, Vec<Span>>)

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

Trait Implementations

impl Default for GatedSpans

fn default() -> GatedSpans

Returns the “default value” for a type.