Trait wasmtime_wiggle::bitflags::_core::prelude::rust_2021::Unpin

pub auto trait Unpin { }

Types that can be safely moved after being pinned.

Rust itself has no notion of immovable types, and considers moves (e.g., through assignment or mem::replace) to always be safe.

The Pin type is used instead to prevent moves through the type system. Pointers P<T> wrapped in the Pin<P<T>> wrapper can’t be moved out of. See the pin module documentation for more information on pinning.

Implementing the Unpin trait for T lifts the restrictions of pinning off the type, which then allows moving T out of Pin<P<T>> with functions such as mem::replace.

Unpin has no consequence at all for non-pinned data. In particular, mem::replace happily moves !Unpin data (it works for any &mut T, not just when T: Unpin). However, you cannot use mem::replace on data wrapped inside a Pin<P<T>> because you cannot get the &mut T you need for that, and that is what makes this system work.

So this, for example, can only be done on types implementing Unpin:

use std::mem;
use std::pin::Pin;

let mut string = "this".to_string();
let mut pinned_string = Pin::new(&mut string);

// We need a mutable reference to call `mem::replace`.
// We can obtain such a reference by (implicitly) invoking `Pin::deref_mut`,
// but that is only possible because `String` implements `Unpin`.
mem::replace(&mut *pinned_string, "other".to_string());

This trait is automatically implemented for almost every type.

Implementations on Foreign Types

impl Unpin for Big32x40

impl Unpin for Big8x3

impl Unpin for Sign

impl<'a> Unpin for Decimal<'a>

impl<'a> Unpin for ParseResult<'a>

impl Unpin for Unpacked

impl Unpin for Decoded

impl Unpin for FullDecoded

impl<'a> Unpin for Part<'a>

impl<'a> Unpin for Formatted<'a>

impl Unpin for Sign

impl Unpin for Argument

impl Unpin for FormatSpec

impl Unpin for Alignment

impl Unpin for Count

impl Unpin for MacroCallsite

impl<T> Unpin for *const T where
    T: ?Sized, 

impl<'a, T> Unpin for &'a mut T where
    T: 'a + ?Sized, 

impl<T> Unpin for *mut T where
    T: ?Sized, 

impl<'a, T> Unpin for &'a T where
    T: 'a + ?Sized, 

impl<T> Unpin for Arc<T> where
    T: ?Sized, 

impl<T, A> Unpin for Box<T, A> where
    T: ?Sized,
    A: Allocator + 'static, 

impl<T> Unpin for Rc<T> where
    T: ?Sized, 

impl Unpin for isize

impl<T> Unpin for [T] where
    T: Unpin, 

impl Unpin for [u8]

impl Unpin for char

impl Unpin for u128

impl Unpin for u16

impl Unpin for i128

impl Unpin for i16

impl Unpin for str

impl Unpin for f64

impl Unpin for u64

impl Unpin for u8

impl Unpin for i64

impl Unpin for i8

impl<T, const N: usize> Unpin for [T; N] where
    T: Unpin, 

impl Unpin for bool

impl Unpin for f32

impl Unpin for u32

impl Unpin for usize

impl Unpin for i32

Implementors

impl !Unpin for PhantomPinned

impl Unpin for Waker

impl<'__pin, T> Unpin for Instrumented<T> where
    __Origin<'__pin, T>: Unpin, 

impl<'__pin, T> Unpin for WithDispatch<T> where
    __Origin<'__pin, T>: Unpin, 

impl<Dyn> Unpin for DynMetadata<Dyn> where
    Dyn: ?Sized, 

impl<F> Unpin for PollFn<F>

impl<T> Unpin for Pending<T>

impl<T> Unpin for Ready<T>

Auto implementors

impl Unpin for GuestError

impl Unpin for Trap

impl Unpin for Abi

impl Unpin for BuiltinType

impl Unpin for Definition

impl Unpin for Entry

impl Unpin for IntRepr

impl Unpin for ModuleDefinition

impl Unpin for ModuleEntry

impl Unpin for ModuleImportVariant

impl Unpin for RecordKind

impl Unpin for RepEquality

impl Unpin for SExpr

impl Unpin for Type

impl Unpin for TypeRef

impl Unpin for ValidationError

impl Unpin for WasmType

impl Unpin for WitxError

impl Unpin for ImportTypeSyntax

impl Unpin for ParamUnknown

impl Unpin for PolyfillError

impl Unpin for TypePolyfill

impl Unpin for wasmtime_wiggle::bitflags::_core::cmp::Ordering

impl Unpin for Infallible

impl Unpin for c_void

impl Unpin for wasmtime_wiggle::bitflags::_core::fmt::Alignment

impl Unpin for FpCategory

impl Unpin for IntErrorKind

impl Unpin for SearchStep

impl Unpin for wasmtime_wiggle::bitflags::_core::sync::atomic::Ordering

impl Unpin for BorrowHandle

impl Unpin for Region

impl Unpin for WasmtimeGuestMemory

impl Unpin for Identifier

impl Unpin for wasmtime_wiggle::tracing::field::Empty

impl Unpin for Field

impl Unpin for FieldSet

impl Unpin for wasmtime_wiggle::tracing::field::Iter

impl Unpin for Kind

impl Unpin for LevelFilter

impl Unpin for ParseLevelError

impl Unpin for ParseLevelFilterError

impl Unpin for EnteredSpan

impl Unpin for Dispatch

impl Unpin for wasmtime_wiggle::tracing::Id

impl Unpin for Level

impl Unpin for Span

impl Unpin for DefaultGuard

impl Unpin for Interest

impl Unpin for SetGlobalDefaultError

impl Unpin for HandleSyntax

impl Unpin for FuncPolyfill

impl Unpin for ModulePolyfill

impl Unpin for ParamPolyfill

impl Unpin for Polyfill

impl Unpin for Case

impl Unpin for Constant

impl Unpin for DocValidation

impl Unpin for Document

impl Unpin for Filesystem

impl Unpin for HandleDatatype

impl Unpin for wasmtime_wiggle::witx::Id

impl Unpin for InterfaceFunc

impl Unpin for InterfaceFuncParam

impl Unpin for wasmtime_wiggle::witx::Location

impl Unpin for MockFs

impl Unpin for Module

impl Unpin for ModuleImport

impl Unpin for NamedType

impl Unpin for RecordDatatype

impl Unpin for RecordMember

impl Unpin for SizeAlign

impl Unpin for Variant

impl Unpin for AllocError

impl Unpin for Layout

impl Unpin for LayoutError

impl Unpin for TypeId

impl Unpin for CpuidResult

impl Unpin for __m128

impl Unpin for __m128bh

impl Unpin for __m128d

impl Unpin for __m128i

impl Unpin for __m256

impl Unpin for __m256bh

impl Unpin for __m256d

impl Unpin for __m256i

impl Unpin for __m512

impl Unpin for __m512bh

impl Unpin for __m512d

impl Unpin for __m512i

impl Unpin for TryFromSliceError

impl Unpin for wasmtime_wiggle::bitflags::_core::ascii::EscapeDefault

impl Unpin for BorrowError

impl Unpin for BorrowMutError

impl Unpin for CharTryFromError

impl Unpin for DecodeUtf16Error

impl Unpin for wasmtime_wiggle::bitflags::_core::char::EscapeDebug

impl Unpin for wasmtime_wiggle::bitflags::_core::char::EscapeDefault

impl Unpin for wasmtime_wiggle::bitflags::_core::char::EscapeUnicode

impl Unpin for ParseCharError

impl Unpin for ToLowercase

impl Unpin for ToUppercase

impl Unpin for Error

impl Unpin for SipHasher

impl Unpin for NonZeroI8

impl Unpin for NonZeroI16

impl Unpin for NonZeroI32

impl Unpin for NonZeroI64

impl Unpin for NonZeroI128

impl Unpin for NonZeroIsize

impl Unpin for NonZeroU8

impl Unpin for NonZeroU16

impl Unpin for NonZeroU32

impl Unpin for NonZeroU64

impl Unpin for NonZeroU128

impl Unpin for NonZeroUsize

impl Unpin for ParseFloatError

impl Unpin for ParseIntError

impl Unpin for TryFromIntError

impl Unpin for RangeFull

impl Unpin for NoneError

impl Unpin for TraitObject

impl Unpin for Utf8Lossy

impl Unpin for ParseBoolError

impl Unpin for Utf8Error

impl Unpin for AtomicBool

impl Unpin for AtomicI8

impl Unpin for AtomicI16

impl Unpin for AtomicI32

impl Unpin for AtomicI64

impl Unpin for AtomicIsize

impl Unpin for AtomicU8

impl Unpin for AtomicU16

impl Unpin for AtomicU32

impl Unpin for AtomicU64

impl Unpin for AtomicUsize

impl Unpin for RawWaker

impl Unpin for RawWakerVTable

impl Unpin for Duration

impl<'a> Unpin for Instruction<'a>

impl<'a> Unpin for DeclSyntax<'a>

impl<'a> Unpin for ModuleDeclSyntax<'a>

impl<'a> Unpin for TopLevelSyntax<'a>

impl<'a> Unpin for TypedefSyntax<'a>

impl<'a> Unpin for GuestStr<'a>

impl<'a> Unpin for GuestStrMut<'a>

impl<'a> Unpin for Event<'a>

impl<'a> Unpin for ValueSet<'a>

impl<'a> Unpin for Attributes<'a>

impl<'a> Unpin for Entered<'a>

impl<'a> Unpin for Record<'a>

impl<'a> Unpin for Metadata<'a>

impl<'a> Unpin for CaseSyntax<'a>

impl<'a> Unpin for CommentSyntax<'a>

impl<'a> Unpin for ConstSyntax<'a>

impl<'a> Unpin for EnumSyntax<'a>

impl<'a> Unpin for ExpectedSyntax<'a>

impl<'a> Unpin for FieldSyntax<'a>

impl<'a> Unpin for FlagsSyntax<'a>

impl<'a> Unpin for InterfaceFuncSyntax<'a>

impl<'a> Unpin for ModuleImportSyntax<'a>

impl<'a> Unpin for ModuleSyntax<'a>

impl<'a> Unpin for RecordSyntax<'a>

impl<'a> Unpin for TopLevelDocument<'a>

impl<'a> Unpin for TupleSyntax<'a>

impl<'a> Unpin for TypenameSyntax<'a>

impl<'a> Unpin for UnionSyntax<'a>

impl<'a> Unpin for VariantSyntax<'a>

impl<'a> Unpin for RecordMemberLayout<'a>

impl<'a> Unpin for Arguments<'a>

impl<'a> Unpin for Formatter<'a>

impl<'a> Unpin for wasmtime_wiggle::bitflags::_core::panic::Location<'a>

impl<'a> Unpin for PanicInfo<'a>

impl<'a> Unpin for EscapeAscii<'a>

impl<'a> Unpin for Utf8LossyChunk<'a>

impl<'a> Unpin for Utf8LossyChunksIter<'a>

impl<'a> Unpin for CharSearcher<'a>

impl<'a> Unpin for Bytes<'a>

impl<'a> Unpin for CharIndices<'a>

impl<'a> Unpin for Chars<'a>

impl<'a> Unpin for EncodeUtf16<'a>

impl<'a> Unpin for wasmtime_wiggle::bitflags::_core::str::EscapeDebug<'a>

impl<'a> Unpin for wasmtime_wiggle::bitflags::_core::str::EscapeDefault<'a>

impl<'a> Unpin for wasmtime_wiggle::bitflags::_core::str::EscapeUnicode<'a>

impl<'a> Unpin for Lines<'a>

impl<'a> Unpin for LinesAny<'a>

impl<'a> Unpin for SplitAsciiWhitespace<'a>

impl<'a> Unpin for SplitWhitespace<'a>

impl<'a> Unpin for Context<'a>

impl<'a, 'b> Unpin for DebugList<'a, 'b> where
    'b: 'a, 

impl<'a, 'b> Unpin for DebugMap<'a, 'b> where
    'b: 'a, 

impl<'a, 'b> Unpin for DebugSet<'a, 'b> where
    'b: 'a, 

impl<'a, 'b> Unpin for DebugStruct<'a, 'b> where
    'b: 'a, 

impl<'a, 'b> Unpin for DebugTuple<'a, 'b> where
    'b: 'a, 

impl<'a, 'b> Unpin for CharSliceSearcher<'a, 'b>

impl<'a, 'b> Unpin for StrSearcher<'a, 'b>

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

impl<'a, A> Unpin for wasmtime_wiggle::bitflags::_core::option::Iter<'a, A>

impl<'a, A> Unpin for wasmtime_wiggle::bitflags::_core::option::IterMut<'a, A>

impl<'a, F> Unpin for CharPredicateSearcher<'a, F> where
    F: Unpin, 

impl<'a, P> Unpin for MatchIndices<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for Matches<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for RMatchIndices<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for RMatches<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for wasmtime_wiggle::bitflags::_core::str::RSplit<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for wasmtime_wiggle::bitflags::_core::str::RSplitN<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for RSplitTerminator<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for wasmtime_wiggle::bitflags::_core::str::Split<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for wasmtime_wiggle::bitflags::_core::str::SplitInclusive<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for wasmtime_wiggle::bitflags::_core::str::SplitN<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for SplitTerminator<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, T> Unpin for GuestSlice<'a, T>

impl<'a, T> Unpin for GuestSliceMut<'a, T>

impl<'a, T> Unpin for Documented<'a, T> where
    T: Unpin, 

impl<'a, T> Unpin for wasmtime_wiggle::bitflags::_core::result::Iter<'a, T>

impl<'a, T> Unpin for wasmtime_wiggle::bitflags::_core::result::IterMut<'a, T>

impl<'a, T> Unpin for Chunks<'a, T>

impl<'a, T> Unpin for ChunksExact<'a, T>

impl<'a, T> Unpin for ChunksExactMut<'a, T>

impl<'a, T> Unpin for ChunksMut<'a, T>

impl<'a, T> Unpin for wasmtime_wiggle::bitflags::_core::slice::Iter<'a, T>

impl<'a, T> Unpin for wasmtime_wiggle::bitflags::_core::slice::IterMut<'a, T>

impl<'a, T> Unpin for RChunks<'a, T>

impl<'a, T> Unpin for RChunksExact<'a, T>

impl<'a, T> Unpin for RChunksExactMut<'a, T>

impl<'a, T> Unpin for RChunksMut<'a, T>

impl<'a, T> Unpin for Windows<'a, T>

impl<'a, T, P> Unpin for GroupBy<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for GroupByMut<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for wasmtime_wiggle::bitflags::_core::slice::RSplit<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for RSplitMut<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for wasmtime_wiggle::bitflags::_core::slice::RSplitN<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for RSplitNMut<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for wasmtime_wiggle::bitflags::_core::slice::Split<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for wasmtime_wiggle::bitflags::_core::slice::SplitInclusive<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for SplitInclusiveMut<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for SplitMut<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for wasmtime_wiggle::bitflags::_core::slice::SplitN<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for SplitNMut<'a, T, P> where
    P: Unpin, 

impl<'a, T, const N: usize> Unpin for ArrayChunks<'a, T, N>

impl<'a, T, const N: usize> Unpin for ArrayChunksMut<'a, T, N>

impl<'a, T, const N: usize> Unpin for ArrayWindows<'a, T, N>

impl<'a, T: ?Sized> Unpin for GuestPtr<'a, T> where
    <T as Pointee>::Pointer: Unpin, 

impl<'b, T: ?Sized> Unpin for Ref<'b, T>

impl<'b, T: ?Sized> Unpin for RefMut<'b, T>

impl<'f> Unpin for VaListImpl<'f>

impl<A> Unpin for Repeat<A> where
    A: Unpin, 

impl<A> Unpin for wasmtime_wiggle::bitflags::_core::option::IntoIter<A> where
    A: Unpin, 

impl<A, B> Unpin for Chain<A, B> where
    A: Unpin,
    B: Unpin, 

impl<A, B> Unpin for Zip<A, B> where
    A: Unpin,
    B: Unpin, 

impl<B, C> Unpin for ControlFlow<B, C> where
    B: Unpin,
    C: Unpin, 

impl<F> Unpin for FromFn<F> where
    F: Unpin, 

impl<F> Unpin for OnceWith<F> where
    F: Unpin, 

impl<F> Unpin for RepeatWith<F> where
    F: Unpin, 

impl<H> Unpin for BuildHasherDefault<H> where
    H: Unpin, 

impl<I> Unpin for DecodeUtf16<I> where
    I: Unpin, 

impl<I> Unpin for Cloned<I> where
    I: Unpin, 

impl<I> Unpin for Copied<I> where
    I: Unpin, 

impl<I> Unpin for Cycle<I> where
    I: Unpin, 

impl<I> Unpin for Enumerate<I> where
    I: Unpin, 

impl<I> Unpin for Flatten<I> where
    I: Unpin,
    <<I as Iterator>::Item as IntoIterator>::IntoIter: Unpin, 

impl<I> Unpin for Fuse<I> where
    I: Unpin, 

impl<I> Unpin for Intersperse<I> where
    I: Unpin,
    <I as Iterator>::Item: Unpin, 

impl<I> Unpin for Peekable<I> where
    I: Unpin,
    <I as Iterator>::Item: Unpin, 

impl<I> Unpin for Skip<I> where
    I: Unpin, 

impl<I> Unpin for StepBy<I> where
    I: Unpin, 

impl<I> Unpin for Take<I> where
    I: Unpin, 

impl<I, F> Unpin for FilterMap<I, F> where
    F: Unpin,
    I: Unpin, 

impl<I, F> Unpin for Inspect<I, F> where
    F: Unpin,
    I: Unpin, 

impl<I, F> Unpin for Map<I, F> where
    F: Unpin,
    I: Unpin, 

impl<I, G> Unpin for IntersperseWith<I, G> where
    G: Unpin,
    I: Unpin,
    <I as Iterator>::Item: Unpin, 

impl<I, P> Unpin for Filter<I, P> where
    I: Unpin,
    P: Unpin, 

impl<I, P> Unpin for MapWhile<I, P> where
    I: Unpin,
    P: Unpin, 

impl<I, P> Unpin for SkipWhile<I, P> where
    I: Unpin,
    P: Unpin, 

impl<I, P> Unpin for TakeWhile<I, P> where
    I: Unpin,
    P: Unpin, 

impl<I, St, F> Unpin for Scan<I, St, F> where
    F: Unpin,
    I: Unpin,
    St: Unpin, 

impl<I, U, F> Unpin for FlatMap<I, U, F> where
    F: Unpin,
    I: Unpin,
    <U as IntoIterator>::IntoIter: Unpin, 

impl<Idx> Unpin for Range<Idx> where
    Idx: Unpin, 

impl<Idx> Unpin for RangeFrom<Idx> where
    Idx: Unpin, 

impl<Idx> Unpin for RangeInclusive<Idx> where
    Idx: Unpin, 

impl<Idx> Unpin for RangeTo<Idx> where
    Idx: Unpin, 

impl<Idx> Unpin for RangeToInclusive<Idx> where
    Idx: Unpin, 

impl<P> Unpin for Pin<P> where
    P: Unpin, 

impl<T> Unpin for Bound<T> where
    T: Unpin, 

impl<T> Unpin for Option<T> where
    T: Unpin, 

impl<T> Unpin for Poll<T> where
    T: Unpin, 

impl<T> Unpin for DebugValue<T> where
    T: Unpin, 

impl<T> Unpin for DisplayValue<T> where
    T: Unpin, 

impl<T> Unpin for Reverse<T> where
    T: Unpin, 

impl<T> Unpin for wasmtime_wiggle::bitflags::_core::iter::Empty<T> where
    T: Unpin, 

impl<T> Unpin for Once<T> where
    T: Unpin, 

impl<T> Unpin for Rev<T> where
    T: Unpin, 

impl<T> Unpin for OnceCell<T> where
    T: Unpin, 

impl<T> Unpin for Discriminant<T>

impl<T> Unpin for Wrapping<T> where
    T: Unpin, 

impl<T> Unpin for wasmtime_wiggle::bitflags::_core::result::IntoIter<T> where
    T: Unpin, 

impl<T> Unpin for AtomicPtr<T>

impl<T> Unpin for MaybeUninit<T> where
    T: Unpin, 

impl<T, E> Unpin for Result<T, E> where
    E: Unpin,
    T: Unpin, 

impl<T, F> Unpin for Successors<T, F> where
    F: Unpin,
    T: Unpin, 

impl<T, F> Unpin for Lazy<T, F> where
    F: Unpin,
    T: Unpin, 

impl<T, const N: usize> Unpin for wasmtime_wiggle::bitflags::_core::array::IntoIter<T, N> where
    T: Unpin, 

impl<T: ?Sized> Unpin for Cell<T> where
    T: Unpin, 

impl<T: ?Sized> Unpin for RefCell<T> where
    T: Unpin, 

impl<T: ?Sized> Unpin for UnsafeCell<T> where
    T: Unpin, 

impl<T: ?Sized> Unpin for PhantomData<T> where
    T: Unpin, 

impl<T: ?Sized> Unpin for ManuallyDrop<T> where
    T: Unpin, 

impl<T: ?Sized> Unpin for NonNull<T>

impl<Y, R> Unpin for GeneratorState<Y, R> where
    R: Unpin,
    Y: Unpin,