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

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.

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§symbol_interner: Interner§span_interner: Lock<SpanInterner>§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.

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 432 bytes