EarlyParsedState in rustc_attr_parsing::early_parsed - Rust
Description: This struct contains the state necessary to convert early parsed attributes to hir attributes The only conversion that really happens here is that multiple early parsed attributes are merged into a single hir attribute, representing their combined state. FIXME: We should make this a nice and extendable system if this is going to be used more often

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## EarlyParsedState

# Struct EarlyParsedState

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    pub(crate) struct EarlyParsedState {
        cfg_trace: ThinVec<(CfgEntry, Span)>,
        cfg_attr_trace: bool,
    }

Expand description

This struct contains the state necessary to convert early parsed attributes to hir attributes The only conversion that really happens here is that multiple early parsed attributes are merged into a single hir attribute, representing their combined state. FIXME: We should make this a nice and extendable system if this is going to be used more often

## Fields§

§`cfg_trace: ThinVec<(CfgEntry, Span)>`

Attribute state for `#[cfg]` trace attributes

§`cfg_attr_trace: bool`

Attribute state for `#[cfg_attr]` trace attributes The arguments of these attributes is no longer relevant for any later passes, only their presence. So we discard the arguments here.

## Implementations§

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### impl EarlyParsedState

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#### pub(crate) fn accept_early_parsed_attribute( &mut self, attr_span: Span, lower_span: impl Copy + Fn(Span) -> Span, parsed: &EarlyParsedAttribute, )

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#### pub(crate) fn finalize_early_parsed_attributes( self, attributes: &mut Vec<Attribute>, )

## Trait Implementations§

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### impl Default for EarlyParsedState

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#### fn default() -> EarlyParsedState

Returns the “default value” for a type. Read more

## Auto Trait Implementations§

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### impl DynSend for EarlyParsedState

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### impl DynSync for EarlyParsedState

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### impl Freeze for EarlyParsedState

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### impl RefUnwindSafe for EarlyParsedState

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### impl Send for EarlyParsedState

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### impl Sync for EarlyParsedState

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### impl Unpin for EarlyParsedState

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### impl UnsafeUnpin for EarlyParsedState

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### impl UnwindSafe for EarlyParsedState

## 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> 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<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<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: 16 bytes