ModuleData in rustc_resolve - Rust
Description: One node in the tree of modules.

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## ModuleData

# Struct ModuleData

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    pub(crate) struct ModuleData<'ra> {Show 13 fields
        pub(crate) parent: Option<Module<'ra>>,
        pub(crate) kind: ModuleKind,
        pub(crate) lazy_resolutions: CmRefCell<FxIndexMap<BindingKey, &'ra CmRefCell<NameResolution<'ra>>>>,
        pub(crate) populate_on_access: Cell<bool>,
        pub(crate) underscore_disambiguator: CmCell<u32>,
        pub(crate) unexpanded_invocations: CmRefCell<FxHashSet<LocalExpnId>>,
        pub(crate) no_implicit_prelude: bool,
        pub(crate) glob_importers: CmRefCell<Vec<Interned<'ra, ImportData<'ra>>>>,
        pub(crate) globs: CmRefCell<Vec<Interned<'ra, ImportData<'ra>>>>,
        pub(crate) traits: CmRefCell<Option<Box<[(Symbol, Interned<'ra, DeclData<'ra>>, Option<Module<'ra>>, bool)]>>>,
        pub(crate) span: Span,
        pub(crate) expansion: ExpnId,
        pub(crate) self_decl: Option<Interned<'ra, DeclData<'ra>>>,
    }

Expand description

One node in the tree of modules.

Note that a “module” in resolve is broader than a `mod` that you declare in Rust code. It may be one of these:

- `mod`
- crate root (aka, top-level anonymous module)
- `enum`
- `trait`
- curly-braced block with statements

You can use `ModuleData::kind` to determine the kind of module this is.

## Fields§

§`parent: Option<Module<'ra>>`

The direct parent module (it may not be a `mod`, however).

§`kind: ModuleKind`

What kind of module this is, because this may not be a `mod`.

§`lazy_resolutions: CmRefCell<FxIndexMap<BindingKey, &'ra CmRefCell<NameResolution<'ra>>>>`

Mapping between names and their (possibly in-progress) resolutions in this module. Resolutions in modules from other crates are not populated until accessed.

§`populate_on_access: Cell<bool>`

True if this is a module from other crate that needs to be populated on access.

§`underscore_disambiguator: CmCell<u32>`

Used to disambiguate underscore items (`const _: T = ...`) in the module.

§`unexpanded_invocations: CmRefCell<FxHashSet<LocalExpnId>>`

Macro invocations that can expand into items in this module.

§`no_implicit_prelude: bool`

Whether `#[no_implicit_prelude]` is active.

§`glob_importers: CmRefCell<Vec<Interned<'ra, ImportData<'ra>>>>`§`globs: CmRefCell<Vec<Interned<'ra, ImportData<'ra>>>>`§`traits: CmRefCell<Option<Box<[(Symbol, Interned<'ra, DeclData<'ra>>, Option<Module<'ra>>, bool)]>>>`

Used to memoize the traits in this module for faster searches through all traits in scope.

§`span: Span`

Span of the module itself. Used for error reporting.

§`expansion: ExpnId`§`self_decl: Option<Interned<'ra, DeclData<'ra>>>`

Declaration for implicitly declared names that come with a module, like `self` (not yet used), or `crate`/`$crate` (for root modules).

## Implementations§

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### impl<'ra> ModuleData<'ra>

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#### pub(crate) fn new( parent: Option<Module<'ra>>, kind: ModuleKind, expansion: ExpnId, span: Span, no_implicit_prelude: bool, vis: Visibility<DefId>, arenas: &'ra ResolverArenas<'ra>, ) -> Self

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#### pub(crate) fn name(&self) -> Option<Symbol>

Get name of the module.

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#### pub(crate) fn opt_def_id(&self) -> Option<DefId>

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#### pub(crate) fn def_id(&self) -> DefId

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#### pub(crate) fn is_local(&self) -> bool

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#### pub(crate) fn has_unexpanded_invocations(&self) -> bool

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#### pub(crate) fn res(&self) -> Option<Res<NodeId>>

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#### pub(crate) fn def_kind(&self) -> Option<DefKind>

## Trait Implementations§

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### impl Hash for ModuleData<'_>

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#### fn hash<H>(&self, _: &mut H)
where H: Hasher,

Feeds this value into the given `Hasher`. Read more
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#### fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more

## Auto Trait Implementations§

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### impl<'ra> !DynSend for ModuleData<'ra>

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### impl<'ra> !DynSync for ModuleData<'ra>

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### impl<'ra> !Freeze for ModuleData<'ra>

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### impl<'ra> !RefUnwindSafe for ModuleData<'ra>

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### impl<'ra> !Send for ModuleData<'ra>

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### impl<'ra> !Sync for ModuleData<'ra>

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### impl<'ra> !UnwindSafe for ModuleData<'ra>

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### impl<'ra> Unpin for ModuleData<'ra>

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### impl<'ra> UnsafeUnpin for ModuleData<'ra>

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

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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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#### fn in_current_span(self) -> Instrumented<Self>

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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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

## 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: 256 bytes