Trait nom::lib::std::prelude::v1::rust_2018::Unpin

#[lang = "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 Argument

impl Unpin for FormatSpec

impl Unpin for Alignment

impl Unpin for Count

impl<T> Unpin for Ready<T>

impl<F> Unpin for PollFn<F>

impl !Unpin for PhantomPinned

impl<T> Unpin for Pending<T>

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

impl Unpin for Waker

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Implementors

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

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

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

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

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Auto implementors

impl Unpin for CompareResult

impl Unpin for Needed

impl Unpin for ErrorKind

impl Unpin for Ordering

impl Unpin for Infallible

impl Unpin for nom::lib::std::fmt::Alignment

impl Unpin for SearchStep

impl Unpin for Endianness

impl Unpin for nom::lib::std::fmt::Error

impl Unpin for RangeFull

impl Unpin for NoneError

impl Unpin for Utf8Lossy

impl Unpin for ParseBoolError

impl Unpin for Utf8Error

impl Unpin for [u8]

impl Unpin for bool

impl Unpin for char

impl Unpin for f32

impl Unpin for f64

impl Unpin for i8

impl Unpin for i16

impl Unpin for i32

impl Unpin for i64

impl Unpin for i128

impl Unpin for isize

impl Unpin for str

impl Unpin for u8

impl Unpin for u16

impl Unpin for u32

impl Unpin for u64

impl Unpin for u128

impl Unpin for usize

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

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

impl<'a> Unpin for EscapeDefault<'a>

impl<'a> Unpin for 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, '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, A> Unpin for nom::lib::std::option::Iter<'a, A>

impl<'a, A> Unpin for nom::lib::std::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 nom::lib::std::str::RSplit<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for nom::lib::std::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 nom::lib::std::str::Split<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for nom::lib::std::str::SplitInclusive<'a, P> where
    <P as Pattern<'a>>::Searcher: Unpin, 

impl<'a, P> Unpin for nom::lib::std::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 nom::lib::std::result::Iter<'a, T>

impl<'a, T> Unpin for nom::lib::std::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 nom::lib::std::slice::Iter<'a, T>

impl<'a, T> Unpin for nom::lib::std::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 nom::lib::std::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 nom::lib::std::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 nom::lib::std::slice::Split<'a, T, P> where
    P: Unpin, 

impl<'a, T, P> Unpin for nom::lib::std::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 nom::lib::std::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> Unpin for Repeat<A> where
    A: Unpin, 

impl<A> Unpin for nom::lib::std::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<E> Unpin for Err<E> where
    E: 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<F, G> Unpin for And<F, G> where
    F: Unpin,
    G: Unpin, 

impl<F, G> Unpin for Or<F, G> where
    F: Unpin,
    G: Unpin, 

impl<F, G, O1> Unpin for AndThen<F, G, O1> where
    F: Unpin,
    G: Unpin,
    O1: Unpin, 

impl<F, G, O1> Unpin for nom::FlatMap<F, G, O1> where
    F: Unpin,
    G: Unpin,
    O1: Unpin, 

impl<F, G, O1> Unpin for nom::Map<F, G, O1> where
    F: Unpin,
    G: Unpin,
    O1: Unpin, 

impl<F, O1, O2, E1, E2> Unpin for Into<F, O1, O2, E1, E2> where
    E1: Unpin,
    E2: Unpin,
    F: Unpin,
    O1: Unpin,
    O2: Unpin, 

impl<I> Unpin for nom::error::Error<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, E, F> Unpin for ParserIterator<I, E, F> where
    E: Unpin,
    F: Unpin,
    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 nom::lib::std::iter::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 nom::lib::std::iter::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<T> Unpin for Bound<T> where
    T: Unpin, 

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

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

impl<T> Unpin for 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 Discriminant<T>

impl<T> Unpin for nom::lib::std::result::IntoIter<T> where
    T: Unpin, 

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

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

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

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

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