devela::_dep::rkyv::niche::niching

Struct DefaultNiche

pub struct DefaultNiche;

Available on crate feature dep_rkyv only.

Expand description

Default Niching for various types.

Also serves as with-wrapper by being shorthand for NicheInto<DefaultNiche>.

Trait Implementations§

impl<T> ArchiveWith<Option<T>> for DefaultNiche
where T: Archive, DefaultNiche: Niching<<T as Archive>::Archived>,

type Archived = NichedOption<<T as Archive>::Archived, DefaultNiche>

The archived type of Self with F.

type Resolver = Option<<T as Archive>::Resolver>

The resolver of a Self with F.

fn resolve_with( field: &Option<T>, resolver: <DefaultNiche as ArchiveWith<Option<T>>>::Resolver, out: Place<<DefaultNiche as ArchiveWith<Option<T>>>::Archived>, )

Resolves the archived type using a reference to the field type F.

impl<T, D> DeserializeWith<NichedOption<<T as Archive>::Archived, DefaultNiche>, Option<T>, D> for DefaultNiche
where T: Archive, <T as Archive>::Archived: Deserialize<T, D>, DefaultNiche: Niching<<T as Archive>::Archived>, D: Fallible + ?Sized,

fn deserialize_with( field: &NichedOption<<T as Archive>::Archived, DefaultNiche>, deserializer: &mut D, ) -> Result<Option<T>, <D as Fallible>::Error> ⓘ

Deserializes the field type F using the given deserializer.

impl<T> Niching<ArchivedBox<T>> for DefaultNiche
where T: ArchivePointee + Portable + ?Sized,

unsafe fn is_niched(niched: *const ArchivedBox<T>) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<ArchivedBox<T>>)

Writes data to out indicating that a T is niched.

impl Niching<NonZero<i8>> for DefaultNiche

unsafe fn is_niched(niched: *const NonZero<i8>) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZero<i8>>)

Writes data to out indicating that a T is niched.

impl Niching<NonZero<u8>> for DefaultNiche

unsafe fn is_niched(niched: *const NonZero<u8>) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZero<u8>>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroI128_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroI128_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroI128_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroI16_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroI16_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroI16_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroI32_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroI32_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroI32_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroI64_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroI64_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroI64_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroU128_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroU128_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroU128_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroU16_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroU16_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroU16_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroU32_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroU32_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroU32_le>)

Writes data to out indicating that a T is niched.

impl Niching<NonZeroU64_le> for DefaultNiche

unsafe fn is_niched(niched: *const NonZeroU64_le) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NonZeroU64_le>)

Writes data to out indicating that a T is niched.

impl Niching<bool> for DefaultNiche

unsafe fn is_niched(niched: *const bool) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<bool>)

Writes data to out indicating that a T is niched.

impl<T, S> SerializeWith<Option<T>, S> for DefaultNiche
where T: Serialize<S>, DefaultNiche: Niching<<T as Archive>::Archived>, S: Fallible + ?Sized,

fn serialize_with( field: &Option<T>, serializer: &mut S, ) -> Result<<DefaultNiche as ArchiveWith<Option<T>>>::Resolver, <S as Fallible>::Error> ⓘ

Serializes the field type F using the given serializer.

Auto Trait Implementations§

impl Freeze for DefaultNiche

impl RefUnwindSafe for DefaultNiche

impl Send for DefaultNiche

impl Sync for DefaultNiche

impl Unpin for DefaultNiche

impl UnwindSafe for DefaultNiche

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> ArchivePointee for T

type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.

fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> ByteSized for T

const BYTE_ALIGN: usize = _

The alignment of this type in bytes.

const BYTE_SIZE: usize = _

The size of this type in bytes.

fn byte_align(&self) -> usize ⓘ

Returns the alignment of this type in bytes.

fn byte_size(&self) -> usize ⓘ

Returns the size of this type in bytes. Read more

fn ptr_size_ratio(&self) -> [usize; 2]

Returns the size ratio between Ptr::BYTES and BYTE_SIZE. Read more

impl<T, R> Chain<R> for T
where T: ?Sized,

fn chain<F>(self, f: F) -> R
where F: FnOnce(Self) -> R, Self: Sized,

Chain a function which takes the parameter by value.

fn chain_ref<F>(&self, f: F) -> R
where F: FnOnce(&Self) -> R,

Chain a function which takes the parameter by shared reference.

fn chain_mut<F>(&mut self, f: F) -> R
where F: FnOnce(&mut Self) -> R,

Chain a function which takes the parameter by exclusive reference.

impl<T> ExtAny for T
where T: Any + ?Sized,

fn type_id() -> TypeId

Returns the TypeId of Self. Read more

fn type_of(&self) -> TypeId

Returns the TypeId of self. Read more

fn type_name(&self) -> &'static str ⓘ

Returns the type name of self. Read more

fn type_is<T: 'static>(&self) -> bool

Returns true if Self is of type T. Read more

fn as_any_ref(&self) -> &dyn Any
where Self: Sized,

Upcasts &self as &dyn Any. Read more

fn as_any_mut(&mut self) -> &mut dyn Any
where Self: Sized,

Upcasts &mut self as &mut dyn Any. Read more

fn as_any_box(self: Box<Self>) -> Box<dyn Any>
where Self: Sized,

Upcasts Box<self> as Box<dyn Any>. Read more

fn downcast_ref<T: 'static>(&self) -> Option<&T> ⓘ

Available on crate feature unsafe_layout only.

Returns some shared reference to the inner value if it is of type T. Read more

fn downcast_mut<T: 'static>(&mut self) -> Option<&mut T> ⓘ

Available on crate feature unsafe_layout only.

Returns some exclusive reference to the inner value if it is of type T. Read more

impl<T> ExtMem for T
where T: ?Sized,

const NEEDS_DROP: bool = _

Know whether dropping values of this type matters, in compile-time.

fn mem_align_of<T>() -> usize ⓘ

Returns the minimum alignment of the type in bytes. Read more

fn mem_align_of_val(&self) -> usize ⓘ

Returns the alignment of the pointed-to value in bytes. Read more

fn mem_size_of<T>() -> usize ⓘ

Returns the size of a type in bytes. Read more

fn mem_size_of_val(&self) -> usize ⓘ

Returns the size of the pointed-to value in bytes. Read more

fn mem_copy(&self) -> Self
where Self: Copy,

Bitwise-copies a value. Read more

fn mem_needs_drop(&self) -> bool

Returns true if dropping values of this type matters. Read more

fn mem_drop(self)
where Self: Sized,

Drops self by running its destructor. Read more

fn mem_forget(self)
where Self: Sized,

Forgets about self without running its destructor. Read more

fn mem_replace(&mut self, other: Self) -> Self
where Self: Sized,

Replaces self with other, returning the previous value of self. Read more

fn mem_take(&mut self) -> Self
where Self: Default,

Replaces self with its default value, returning the previous value of self. Read more

fn mem_swap(&mut self, other: &mut Self)
where Self: Sized,

Swaps the value of self and other without deinitializing either one. Read more

unsafe fn mem_zeroed<T>() -> T

Available on crate feature unsafe_layout only.

Returns the value of type T represented by the all-zero byte-pattern. Read more

unsafe fn mem_transmute_copy<Src, Dst>(src: &Src) -> Dst

Available on crate feature unsafe_layout only.

Returns the value of type T represented by the all-zero byte-pattern. Read more

fn mem_as_bytes(&self) -> &[u8] ⓘ
where Self: Sync + Unpin,

Available on crate feature unsafe_slice only.

View a Sync + Unpin self as &[u8]. Read more

fn mem_as_bytes_mut(&mut self) -> &mut [u8] ⓘ
where Self: Sync + Unpin,

Available on crate feature unsafe_slice only.

View a Sync + Unpin self as &mut [u8]. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<S> FromSample<S> for S

fn from_sample_(s: S) -> S

impl<T> Hook for T

fn hook_ref<F>(self, f: F) -> Self
where F: FnOnce(&Self),

Applies a function which takes the parameter by shared reference, and then returns the (possibly) modified owned value. Read more

fn hook_mut<F>(self, f: F) -> Self
where F: FnOnce(&mut Self),

Applies a function which takes the parameter by exclusive reference, and then returns the (possibly) modified owned value. Read more

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoEither for T

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

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

impl<F, T> IntoSample<T> for F
where T: FromSample<F>,

fn into_sample(self) -> T

impl<T> LayoutRaw for T

fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError> ⓘ

Returns the layout of the type.

impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool

Returns whether the given value has been niched. Read more

fn resolve_niched(out: Place<NichedOption<T, N1>>)

Writes data to out indicating that a T is niched.

impl<T> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize ⓘ

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Pointee for T

type Metadata = ()

The metadata type for pointers and references to this type.

impl<T, U> ToSample<U> for T
where U: FromSample<T>,

fn to_sample_(self) -> U

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error> ⓘ

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

impl<T> Ungil for T
where T: Send,