pub struct VaList<'a, 'f>where
    'f: 'a,{ /* private fields */ }
🔬This is a nightly-only experimental API. (c_variadic)
Available on non-crate feature miri-test-libstd only.
Expand description

A wrapper for a va_list

Methods from Deref<Target = VaListImpl<'f>>§

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pub fn as_va_list<'a>(&'a mut self) -> VaList<'a, 'f>

🔬This is a nightly-only experimental API. (c_variadic)
Available on (AArch64 or PowerPC or s390x or x86-64) and (non-AArch64 or neither macOS nor iOS) and non-target_family="wasm" and non-JavaScript and non-target_os="uefi" and non-Windows only.

Convert a VaListImpl into a VaList that is binary-compatible with C’s va_list.

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pub unsafe fn arg<T>(&mut self) -> Twhere T: VaArgSafe,

🔬This is a nightly-only experimental API. (c_variadic)

Advance to the next arg.

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pub unsafe fn with_copy<F, R>(&self, f: F) -> Rwhere F: for<'copy> FnOnce(VaList<'copy, 'f>) -> R,

🔬This is a nightly-only experimental API. (c_variadic)

Copies the va_list at the current location.

Trait Implementations§

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impl<'a, 'f> Debug for VaList<'a, 'f>where 'f: 'a,

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

Formats the value using the given formatter. Read more
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impl<'a, 'f> Deref for VaList<'a, 'f>where 'f: 'a,

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type Target = VaListImpl<'f>

The resulting type after dereferencing.
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fn deref(&self) -> &VaListImpl<'f>

Dereferences the value.
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impl<'a, 'f> DerefMut for VaList<'a, 'f>where 'f: 'a,

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fn deref_mut(&mut self) -> &mut VaListImpl<'f>

Mutably dereferences the value.

Auto Trait Implementations§

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impl<'a, 'f> RefUnwindSafe for VaList<'a, 'f>

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impl<'a, 'f> !Send for VaList<'a, 'f>

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impl<'a, 'f> !Sync for VaList<'a, 'f>

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impl<'a, 'f> Unpin for VaList<'a, 'f>where 'f: 'a,

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impl<'a, 'f> !UnwindSafe for VaList<'a, 'f>

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<'a, T, E> AsTaggedExplicit<'a, E> for Twhere T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32 ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for Twhere 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 Twhere 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 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> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

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<T> for T

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type Output = T

Should always be Self
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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.
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impl<V, T> VZip<V> for Twhere 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