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

#[lang = "unpin"]
pub auto trait Unpin { }

Types which can be safely moved after being pinned.

Since Rust itself has no notion of immovable types, and considers moves (e.g. through assignment or mem::replace) to always be safe, this trait cannot prevent types from moving by itself.

Instead it is used to prevent moves through the type system, by controlling the behavior of pointers P wrapped in the Pin<P> wrapper, which "pin" the type in place by not allowing it to be moved out of them. See the pin module documentation for more information on pinning.

Implementing this trait lifts the restrictions of pinning off a type, which then allows it to move out 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> 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 Unpin for Position

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

impl Unpin for Waker

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

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

impl !Unpin for PhantomPinned

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

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

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

impl Unpin for isize

impl Unpin for i8

impl Unpin for i16

impl Unpin for i32

impl Unpin for i64

impl Unpin for i128

impl Unpin for usize

impl Unpin for u8

impl Unpin for u16

impl Unpin for u32

impl Unpin for u64

impl Unpin for u128

impl Unpin for f32

impl Unpin for f64

impl Unpin for char

impl Unpin for str

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

impl Unpin for [u8]

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Implementors

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

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Auto implementors

impl Unpin for CompareResult

impl Unpin for Needed

impl Unpin for Endianness

impl Unpin for Ordering

impl Unpin for DefaultHasher

impl Unpin for RandomState

impl Unpin for CollectionAllocErr

impl Unpin for Infallible

impl Unpin for Error

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

impl Unpin for SipHasher

impl Unpin for RangeFull

impl Unpin for NoneError

impl Unpin for SearchStep

impl Unpin for ParseBoolError

impl Unpin for String

impl Unpin for Utf8Error

impl Unpin for FromUtf16Error

impl Unpin for FromUtf8Error

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

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

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

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

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

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

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

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

impl<'a> Unpin for EscapeUnicode<'a>

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

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

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

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

impl<'a> Unpin for nom::lib::std::string::Drain<'a>

impl<'a> Unpin for CompleteStr<'a>

impl<'a> Unpin for CompleteByteSlice<'a>

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

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

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

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

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

impl<'a, 'b> Unpin for DebugMap<'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: MultiCharEq + Unpin, 

impl<'a, I> Unpin for Splice<'a, I> where
    I: Unpin, 

impl<'a, K> Unpin for nom::lib::std::collections::hash_set::Iter<'a, K>

impl<'a, K> Unpin for nom::lib::std::collections::hash_set::Drain<'a, K> where
    K: Unpin, 

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::Keys<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::ValuesMut<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::IterMut<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::Iter<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::Values<'a, K, V>

impl<'a, K, V> Unpin for RawOccupiedEntryMut<'a, K, V>

impl<'a, K, V> Unpin for RangeMut<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::ValuesMut<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::Iter<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::Range<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::Keys<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::OccupiedEntry<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::IterMut<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::Values<'a, K, V>

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::Entry<'a, K, V> where
    K: Unpin, 

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::Entry<'a, K, V> where
    K: Unpin, 

impl<'a, K, V> Unpin for nom::lib::std::collections::btree_map::VacantEntry<'a, K, V> where
    K: Unpin, 

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::Drain<'a, K, V> where
    K: Unpin,
    V: Unpin, 

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::OccupiedEntry<'a, K, V> where
    K: Unpin, 

impl<'a, K, V> Unpin for nom::lib::std::collections::hash_map::VacantEntry<'a, K, V> where
    K: Unpin, 

impl<'a, K, V, S> Unpin for RawEntryBuilder<'a, K, V, S>

impl<'a, K, V, S> Unpin for RawVacantEntryMut<'a, K, V, S>

impl<'a, K, V, S> Unpin for RawEntryBuilderMut<'a, K, V, S>

impl<'a, K, V, S> Unpin for RawEntryMut<'a, K, V, S>

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::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 PeekMut<'a, T>

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

impl<'a, T> Unpin for nom::lib::std::collections::binary_heap::Drain<'a, T>

impl<'a, T> Unpin for nom::lib::std::collections::btree_set::Union<'a, T>

impl<'a, T> Unpin for nom::lib::std::collections::btree_set::Difference<'a, T>

impl<'a, T> Unpin for nom::lib::std::collections::btree_set::Intersection<'a, T>

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

impl<'a, T> Unpin for nom::lib::std::collections::btree_set::Range<'a, T>

impl<'a, T> Unpin for nom::lib::std::collections::btree_set::SymmetricDifference<'a, T>

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

impl<'a, T> Unpin for nom::lib::std::collections::vec_deque::IterMut<'a, T>

impl<'a, T> Unpin for nom::lib::std::collections::vec_deque::Drain<'a, T>

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

impl<'a, T> Unpin for nom::lib::std::collections::linked_list::IterMut<'a, T>

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 nom::lib::std::slice::IterMut<'a, T>

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

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

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

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

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

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

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

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

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

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

impl<'a, T> Unpin for nom::lib::std::vec::Drain<'a, T>

impl<'a, T, F> Unpin for nom::lib::std::collections::linked_list::DrainFilter<'a, T, F> where
    F: Unpin, 

impl<'a, T, F> Unpin for nom::lib::std::vec::DrainFilter<'a, T, F> where
    F: 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 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, S> Unpin for nom::lib::std::collections::hash_set::SymmetricDifference<'a, T, S>

impl<'a, T, S> Unpin for nom::lib::std::collections::hash_set::Intersection<'a, T, S>

impl<'a, T, S> Unpin for nom::lib::std::collections::hash_set::Union<'a, T, S>

impl<'a, T, S> Unpin for nom::lib::std::collections::hash_set::Difference<'a, T, S>

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<E> Unpin for ErrorKind<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<H> Unpin for BuildHasherDefault<H> where
    H: 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 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> Unpin for Err<I, E> where
    E: Unpin,
    I: Unpin, 

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

impl<I, P> Unpin for Filter<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 nom::lib::std::ops::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<K> Unpin for nom::lib::std::collections::hash_set::IntoIter<K> where
    K: Unpin, 

impl<K, V> Unpin for nom::lib::std::collections::btree_map::IntoIter<K, V>

impl<K, V> Unpin for nom::lib::std::collections::hash_map::IntoIter<K, V> where
    K: Unpin,
    V: Unpin, 

impl<K, V> Unpin for BTreeMap<K, V> where
    K: Unpin,
    V: Unpin, 

impl<K, V, S> Unpin for HashMap<K, V, S> where
    K: Unpin,
    S: Unpin,
    V: Unpin, 

impl<T> Unpin for LinkedList<T>

impl<T> Unpin for nom::lib::std::collections::btree_set::IntoIter<T>

impl<T> Unpin for nom::lib::std::collections::linked_list::IntoIter<T>

impl<T> Unpin for Discriminant<T>

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 BinaryHeap<T> where
    T: Unpin, 

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

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

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

impl<T> Unpin for nom::lib::std::collections::vec_deque::IntoIter<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 Vec<T> where
    T: Unpin, 

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

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

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

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, S> Unpin for HashSet<T, S> where
    S: Unpin,
    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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