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Repr

core::io::error::repr

Struct Repr 

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#[repr(transparent)]
pub(super) struct Repr(NonNull<()>, PhantomData<ErrorData<CustomOwner>>);
🔬This is a nightly-only experimental API. (core_io #154046)
Expand description

The internal representation.

See the module docs for more, this is just a way to hack in a check that we indeed are not unwind-safe.

ⓘ
fn is_unwind_safe<T: core::panic::UnwindSafe>() {}
is_unwind_safe::<std::io::Error>();

Tuple Fields§

§0: NonNull<()>
🔬This is a nightly-only experimental API. (core_io #154046)
§1: PhantomData<ErrorData<CustomOwner>>
🔬This is a nightly-only experimental API. (core_io #154046)

Implementations§

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impl Repr

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pub(super) fn new_custom(b: CustomOwner) -> Self

🔬This is a nightly-only experimental API. (core_io #154046)
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pub(super) fn new_os(code: RawOsError) -> Self

🔬This is a nightly-only experimental API. (core_io #154046)
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pub(super) fn new_simple(kind: ErrorKind) -> Self

🔬This is a nightly-only experimental API. (core_io #154046)
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pub(super) const fn new_simple_message(m: &'static SimpleMessage) -> Self

🔬This is a nightly-only experimental API. (core_io #154046)
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pub(super) fn data(&self) -> ErrorData<&Custom>

🔬This is a nightly-only experimental API. (core_io #154046)
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pub(super) fn data_mut(&mut self) -> ErrorData<&mut Custom>

🔬This is a nightly-only experimental API. (core_io #154046)
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pub(super) fn into_data(self) -> ErrorData<CustomOwner>

🔬This is a nightly-only experimental API. (core_io #154046)

Trait Implementations§

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impl Debug for Repr

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

Formats the value using the given formatter. Read more
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impl Drop for Repr

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fn drop(&mut self)

Executes the destructor for this type. Read more
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fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics #130494)
Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned. Read more
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impl Send for Repr

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impl Sync for Repr

Auto Trait Implementations§

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impl !RefUnwindSafe for Repr

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impl !UnwindSafe for Repr

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impl Freeze for Repr

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impl Unpin for Repr

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impl UnsafeUnpin for Repr

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, 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> SizeHint for T
where T: ?Sized,

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default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)
Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more
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default fn upper_bound(&self) -> Option<usize>

🔬This is a nightly-only experimental API. (core_io_internals)
Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more
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final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)
Returns an estimate for the number of elements this container like type contains. Read more
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impl<T> SizedTypeProperties for T

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#[doc(hidden)]
const SIZE: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)]
const ALIGN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)]
const ALIGNMENT: Alignment = _

🔬This is a nightly-only experimental API. (ptr_alignment_type #102070)
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#[doc(hidden)]
const IS_ZST: bool = _

🔬This is a nightly-only experimental API. (sized_type_properties)
true if this type requires no storage. false if its size is greater than zero. Read more
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#[doc(hidden)]
const LAYOUT: Layout = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)]
const MAX_SLICE_LEN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
The largest safe length for a [Self]. 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.