[][src]Struct rustc_metadata::schema::LazySeq

#[must_use]
pub struct LazySeq<T> { pub len: usize, pub position: usize, _marker: PhantomData<T>, }
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A sequence of type T referred to by its absolute position in the metadata and length, and which can be decoded lazily. The sequence is a single node for the purposes of Lazy.

Unlike Lazy<Vec<T>>, the length is encoded next to the position, not at the position, which means that the length doesn't need to be known before encoding all the elements.

If the length is 0, no position is encoded, but otherwise, the encoding is that of Lazy, with the distinction that the minimal distance the length of the sequence, i.e. it's assumed there's no 0-byte element in the sequence.

Fields

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Methods

impl<'tcx> LazySeq<Index>
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Given the metadata, extract out the offset of a particular DefIndex (if any).

impl<'a, 'tcx: 'a, T: Decodable> LazySeq<T>
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impl<T> LazySeq<T>
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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Returns the minimum encoded size of length values of type T.

Trait Implementations

impl<'a, 'tcx, T> SpecializedEncoder<LazySeq<T>> for EncodeContext<'a, 'tcx>
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Encode the value in a manner specific to this encoder state.

impl<'a, 'tcx, T> SpecializedDecoder<LazySeq<T>> for DecodeContext<'a, 'tcx>
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Decode a value in a manner specific to this decoder state.

impl<T> Copy for LazySeq<T>
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impl<T> Clone for LazySeq<T>
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Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl<T> UseSpecializedEncodable for LazySeq<T>
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Defaults to returning an error (see SpecializationError).

impl<T> UseSpecializedDecodable for LazySeq<T>
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Defaults to returning an error (see SpecializationError).

impl<CTX, T> HashStable<CTX> for LazySeq<T>
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Auto Trait Implementations

impl<T> Send for LazySeq<T> where
    T: Send

impl<T> Sync for LazySeq<T> where
    T: Sync

Blanket Implementations

impl<T> ToOwned for T where
    T: Clone
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Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> From for T
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Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
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Performs the conversion.

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from)

Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
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Important traits for &'a mut R

Immutably borrows from an owned value. Read more

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from)

Performs the conversion.

impl<T> BorrowMut for T where
    T: ?Sized
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Important traits for &'a mut R

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
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🔬 This is a nightly-only experimental API. (get_type_id)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> Encodable for T where
    T: UseSpecializedEncodable + ?Sized
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impl<T> Decodable for T where
    T: UseSpecializedDecodable
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impl<E> SpecializationError for E
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Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more

impl<T> Erased for T
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impl<T> Send for T where
    T: ?Sized
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impl<T> Sync for T where
    T: ?Sized
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impl<T> Erased for T

impl<T> MaybeResult for T
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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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impl<'a, T> Captures for T where
    T: ?Sized
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