# Enum rustfmt_nightly::macros::MacroArg

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    pub(crate) enum MacroArg {
        Expr(P<Expr>),
        Ty(P<Ty>),
        Pat(P<Pat>),
        Item(P<Item>),
        Keyword(Ident, Span),
    }

## Variants§

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### Expr(P<Expr>)

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### Ty(P<Ty>)

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### Pat(P<Pat>)

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### Item(P<Item>)

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### Keyword(Ident, Span)

## Implementations§

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### impl MacroArg

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

## Trait Implementations§

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### impl Debug for MacroArg

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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<'a> IntoOverflowableItem<'a> for MacroArg

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#### fn into_overflowable_item(&'a self) -> OverflowableItem<'a>

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### impl Rewrite for MacroArg

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#### fn rewrite(&self, context: &RewriteContext<'_>, shape: Shape) -> Option<String>

Rewrite self into shape.
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### impl Spanned for MacroArg

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#### fn span(&self) -> Span

## Auto Trait Implementations§

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### impl Freeze for MacroArg

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### impl !RefUnwindSafe for MacroArg

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### impl !Send for MacroArg

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### impl !Sync for MacroArg

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### impl Unpin for MacroArg

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### impl !UnwindSafe for MacroArg

## Blanket Implementations§

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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> 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, 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<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: 24 bytes

Size for each variant:

- `Expr`: 12 bytes
- `Ty`: 12 bytes
- `Pat`: 12 bytes
- `Item`: 12 bytes
- `Keyword`: 20 bytes