Struct rustc_span::SessionGlobals

pub struct SessionGlobals {
    pub(crate) symbol_interner: Interner,
    pub(crate) span_interner: Lock<SpanInterner>,
    pub(crate) metavar_spans: Lock<FxHashMap<Span, Span>>,
    pub(crate) hygiene_data: Lock<HygieneData>,
    pub(crate) source_map: Lock<Option<Lrc<SourceMap>>>,
}

Per-session global variables: this struct is stored in thread-local storage in such a way that it is accessible without any kind of handle to all threads within the compilation session, but is not accessible outside the session.

Fields

symbol_interner: Interner

span_interner: Lock<SpanInterner>

metavar_spans: Lock<FxHashMap<Span, Span>>

Maps a macro argument token into use of the corresponding metavariable in the macro body. Collisions are possible and processed in maybe_use_metavar_location on best effort basis.

hygiene_data: Lock<HygieneData>

source_map: Lock<Option<Lrc<SourceMap>>>

A reference to the source map in the Session. It’s an Option because it can’t be initialized until Session is created, which happens after SessionGlobals. set_source_map does the initialization.

This field should only be used in places where the Session is truly not available, such as <Span as Debug>::fmt.

Implementations

impl SessionGlobals

pub fn new(edition: Edition) -> SessionGlobals

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 472 bytes