Struct ListVTable 

#[repr(C)]
pub struct ListVTable {
    pub len: unsafe fn(PtrConst) -> usize,
    pub get: unsafe fn(PtrConst, usize, &'static Shape) -> Option<PtrConst>,
    pub get_mut: Option<unsafe fn(PtrMut, usize, &'static Shape) -> Option<PtrMut>>,
    pub as_ptr: Option<unsafe fn(PtrConst) -> PtrConst>,
    pub as_mut_ptr: Option<unsafe fn(PtrMut) -> PtrMut>,
}

Virtual table for shareable list operations.

These operations can be type-erased and shared across all instantiations of a generic list type (e.g., one vtable for all Vec<T>). They work using runtime shape information to compute element offsets.

Per-type operations that cannot be shared (init, push, iterator) live in ListTypeOps.

Fields

len: unsafe fn(PtrConst) -> usize

cf. ListLenFn

get: unsafe fn(PtrConst, usize, &'static Shape) -> Option<PtrConst>

cf. ListGetFn

get_mut: Option<unsafe fn(PtrMut, usize, &'static Shape) -> Option<PtrMut>>

cf. ListGetMutFn Only available for mutable lists

as_ptr: Option<unsafe fn(PtrConst) -> PtrConst>

cf. ListAsPtrFn Only available for types that can be accessed as a contiguous array

as_mut_ptr: Option<unsafe fn(PtrMut) -> PtrMut>

cf. ListAsMutPtrFn Only available for types that can be accessed as a contiguous array

Implementations

impl ListVTable

pub const fn builder() -> ListVTableBuilder

Creates a new builder for this vtable

Trait Implementations

impl Clone for ListVTable

fn clone(&self) -> ListVTable

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ListVTable

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Copy for ListVTable