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## Config

# Struct Config

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    pub struct Config {Show 16 fields
        pub opts: Options,
        pub crate_cfg: Vec<String>,
        pub crate_check_cfg: Vec<String>,
        pub input: Input,
        pub output_dir: Option<PathBuf>,
        pub output_file: Option<OutFileName>,
        pub ice_file: Option<PathBuf>,
        pub file_loader: Option<Box<dyn FileLoader + Send + Sync>>,
        pub lint_caps: FxHashMap<LintId, Level>,
        pub psess_created: Option<Box<dyn FnOnce(&mut ParseSess) + Send>>,
        pub track_state: Option<Box<dyn FnOnce(&Session) + Send>>,
        pub register_lints: Option<Box<dyn Fn(&Session, &mut LintStore) + Send + Sync>>,
        pub override_queries: Option<fn(&Session, &mut Providers)>,
        pub extra_symbols: Vec<&'static str>,
        pub make_codegen_backend: Option<Box<dyn FnOnce(&Session) -> Box<dyn CodegenBackend> + Send>>,
        pub using_internal_features: &'static AtomicBool,
    }

Expand description

The compiler configuration

## Fields§

§`opts: Options`

Command line options

§`crate_cfg: Vec<String>`

Unparsed cfg! configuration in addition to the default ones.

§`crate_check_cfg: Vec<String>`§`input: Input`§`output_dir: Option<PathBuf>`§`output_file: Option<OutFileName>`§`ice_file: Option<PathBuf>`§`file_loader: Option<Box<dyn FileLoader + Send + Sync>>`

Load files from sources other than the file system.

Has no uses within this repository, but may be used in the future by bjorn3 for “hooking rust-analyzer’s VFS into rustc at some point for running rustc without having to save”. (See #102759.)

§`lint_caps: FxHashMap<LintId, Level>`§`psess_created: Option<Box<dyn FnOnce(&mut ParseSess) + Send>>`

This is a callback from the driver that is called when `ParseSess` is created.

§`track_state: Option<Box<dyn FnOnce(&Session) + Send>>`

This is a callback to track otherwise untracked state used by the caller.

You can write to `sess.env_depinfo` and `sess.file_depinfo` to track env vars and files.

§`register_lints: Option<Box<dyn Fn(&Session, &mut LintStore) + Send + Sync>>`

This is a callback from the driver that is called when we’re registering lints; it is called during lint loading when we have the LintStore in a non-shared state.

Note that if you find a Some here you probably want to call that function in the new function being registered.

§`override_queries: Option<fn(&Session, &mut Providers)>`

This is a callback from the driver that is called just after we have populated the list of queries.

§`extra_symbols: Vec<&'static str>`

An extra set of symbols to add to the symbol interner, the symbol indices will start at `PREDEFINED_SYMBOLS_COUNT`

§`make_codegen_backend: Option<Box<dyn FnOnce(&Session) -> Box<dyn CodegenBackend> + Send>>`

This is a callback from the driver that is called to create a codegen backend.

Has no uses within this repository, but is used by bjorn3 for “the hotswapping branch of cg_clif” for “setting the codegen backend from a custom driver where the custom codegen backend has arbitrary data.” (See #102759.)

§`using_internal_features: &'static AtomicBool`

The inner atomic value is set to true when a feature marked as `internal` is enabled. Makes it so that “please report a bug” is hidden, as ICEs with internal features are wontfix, and they are usually the cause of the ICEs.

## Auto Trait Implementations§

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### impl !DynSend for Config

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### impl !DynSync for Config

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### impl Freeze for Config

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### impl !RefUnwindSafe for Config

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### impl Send for Config

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### impl !Sync for Config

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### impl Unpin for Config

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### impl UnsafeUnpin for Config

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### impl !UnwindSafe for Config

## Blanket Implementations§

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### impl<T> Aligned for T

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#### const ALIGN: Alignment

Alignment of `Self`.
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### impl<T> Any for T
where 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 T
where 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 T
where 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, R> CollectAndApply<T, R> for T

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#### fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to `f(&iter.collect::<Vec<_>>())`.

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#### type Output = R

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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> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
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Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
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### impl<T, U> Into<U> for T
where 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> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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### impl<K> IntoQueryKey<K> for K

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#### fn into_query_key(self) -> K

Argument conversion from `Self` to `K`. This should always be a very cheap conversion, e.g. `LocalDefId::to_def_id`.
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### impl<T> MaybeResult<T> for T

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#### type Error = !

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#### fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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#### fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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### impl<T> Pointable for T

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#### const ALIGN: usize

The alignment of pointer.
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#### type Init = T

The type for initializers.
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#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T, U> TryFrom<U> for T
where 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 T
where 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.
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### impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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#### fn upcast(self, interner: I) -> U

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### impl<I, T> UpcastFrom<I, T> for T

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#### fn upcast_from(from: T, _tcx: I) -> T

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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
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### impl<'a, T> Captures<'a> for T
where T: ?Sized,

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### impl<T> ErasedDestructor for T
where T: 'static,

## 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: 2824 bytes