Struct SessionGlobals

pub struct SessionGlobals { /* private fields */ }

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.

Implementations

impl SessionGlobals

pub fn new() -> Self

Creates a new session globals object.

pub fn set<R>(&self, f: impl FnOnce() -> R) -> R

Sets this instance as the global instance for the duration of the closure.

pub fn with_source_map<R>( source_map: Arc<SourceMap>, f: impl FnOnce() -> R, ) -> R

Insert source_map into the session globals for the duration of the closure’s execution.

pub fn with<R>(f: impl FnOnce(&Self) -> R) -> R

Calls the given closure with the current session globals.

Panics

Panics if set has not previously been called.

pub fn with_or_default<R>(f: impl FnOnce(&Self) -> R) -> R

Calls the given closure with the current session globals if they have been set, otherwise creates a new instance, sets it, and calls the closure with it.

pub fn is_set() -> bool

Returns true if the session globals have been set.

Trait Implementations

impl Default for SessionGlobals

fn default() -> Self

Returns the “default value” for a type.