Scope

rustc_resolve

Enum Scope 

Source 
pub(crate) enum Scope<'ra> {
    DeriveHelpers(LocalExpnId),
    DeriveHelpersCompat,
    MacroRules(&'ra Cell<MacroRulesScope<'ra>>),
    Module(Module<'ra>, Option<NodeId>),
    MacroUsePrelude,
    BuiltinAttrs,
    ExternPreludeItems,
    ExternPreludeFlags,
    ToolPrelude,
    StdLibPrelude,
    BuiltinTypes,
}
Expand description

A specific scope in which a name can be looked up.

Variants§

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DeriveHelpers(LocalExpnId)

Inert attributes registered by derive macros.

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DeriveHelpersCompat

Inert attributes registered by derive macros, but used before they are actually declared. This scope will exist until the compatibility lint LEGACY_DERIVE_HELPERS is turned into a hard error.

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MacroRules(&'ra Cell<MacroRulesScope<'ra>>)

Textual let-like scopes introduced by macro_rules! items.

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Module(Module<'ra>, Option<NodeId>)

Names declared in the given module. The node ID is for reporting the PROC_MACRO_DERIVE_RESOLUTION_FALLBACK lint if it should be reported.

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MacroUsePrelude

Names introduced by #[macro_use] attributes on extern crate items.

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BuiltinAttrs

Built-in attributes.

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ExternPreludeItems

Extern prelude names introduced by extern crate items.

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ExternPreludeFlags

Extern prelude names introduced by --extern flags.

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ToolPrelude

Tool modules introduced with #![register_tool].

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StdLibPrelude

Standard library prelude introduced with an internal #[prelude_import] import.

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BuiltinTypes

Built-in types.

Trait Implementations§

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impl<'ra> Clone for Scope<'ra>

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fn clone(&self) -> Scope<'ra>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'ra> Debug for Scope<'ra>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'ra> Copy for Scope<'ra>

Auto Trait Implementations§

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impl<'ra> !DynSend for Scope<'ra>

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impl<'ra> !DynSync for Scope<'ra>

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impl<'ra> Freeze for Scope<'ra>

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impl<'ra> !RefUnwindSafe for Scope<'ra>

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impl<'ra> !Send for Scope<'ra>

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impl<'ra> !Sync for Scope<'ra>

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impl<'ra> Unpin for Scope<'ra>

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impl<'ra> !UnwindSafe for Scope<'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<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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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<P> IntoQueryParam<P> for P

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fn into_query_param(self) -> P

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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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

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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: 16 bytes

Size for each variant:

  • DeriveHelpers: 4 bytes
  • DeriveHelpersCompat: 0 bytes
  • MacroRules: 12 bytes
  • Module: 12 bytes
  • MacroUsePrelude: 0 bytes
  • BuiltinAttrs: 0 bytes
  • ExternPreludeItems: 0 bytes
  • ExternPreludeFlags: 0 bytes
  • ToolPrelude: 0 bytes
  • StdLibPrelude: 0 bytes
  • BuiltinTypes: 0 bytes