Struct rustc_metadata::rmeta::table::Table

pub(super) struct Table<I: Idx, T> where
    Option<T>: FixedSizeEncoding,  {
    _marker: PhantomData<(fn(_: &I), T)>,
    _bytes: [u8],
}

Random-access table (i.e. offering constant-time get/set), similar to Vec<Option<T>>, but without requiring encoding or decoding all the values eagerly and in-order. A total of (max_idx + 1) * <Option<T> as FixedSizeEncoding>::BYTE_LEN bytes are used for a table, where max_idx is the largest index passed to TableBuilder::set.

Fields

_marker: PhantomData<(fn(_: &I), T)>

_bytes: [u8]

Trait Implementations

impl<I: Idx, T> LazyMeta for Table<I, T> where
    Option<T>: FixedSizeEncoding, 

type Meta = usize

fn min_size(len: usize) -> usize

Returns the minimum encoded size.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: (unsized)