pub struct FormatArg<'tcx> {
    pub param: FormatParam<'tcx>,
    pub format: FormatSpec<'tcx>,
    pub span: Span,
}
Expand description

A format argument, such as {}, {foo:?}.

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§param: FormatParam<'tcx>

The parameter the argument refers to.

§format: FormatSpec<'tcx>

How to format param.

§span: Span

span of the whole argument, {..}.

Implementations§

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impl<'tcx> FormatArg<'tcx>

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pub fn format_span(&self) -> Span

Span of the : and format specifiers

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format!("{:.}"), format!("{foo:.}")
          ^^                  ^^

Trait Implementations§

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impl<'tcx> Debug for FormatArg<'tcx>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'tcx> RefUnwindSafe for FormatArg<'tcx>

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impl<'tcx> !Send for FormatArg<'tcx>

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impl<'tcx> !Sync for FormatArg<'tcx>

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impl<'tcx> Unpin for FormatArg<'tcx>

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impl<'tcx> UnwindSafe for FormatArg<'tcx>

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

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

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

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, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 128 bytes