Enum ffimage::packed::dynamic::MemoryView

pub enum MemoryView<'a> {
    U8(&'a [u8]),
    U16(&'a [u16]),
}

Runtime memory view

Variants

U8(&'a [u8])

U16(&'a [u16])

Implementations

impl<'a> MemoryView<'a>

pub fn as_slice<T: 'static>(&self) -> Option<&[T]>

Returns the slice representation of a memory view

It is ensured that only the proper type representation can be cast from the underlying view. If, for example, you were to call the method on a U16 view and try to get a u8 slice reference, the function would return None instead.

Example

use std::convert::TryFrom;
use ffimage::packed::dynamic::MemoryView;

let mem: Vec<u8> = vec![0; 12];
let view = MemoryView::try_from(&mem[..])
    .expect("Failed to wrap memory region");

let slice: &[u8] = view.as_slice()
    .expect("Failed to cast memory view");

pub fn len(&self) -> usize

Returns the number of elements in the view

pub fn is_empty(&self) -> bool

Returns true if there are no elements in the view

Trait Implementations

impl<'a, '_> From<&'_ MemoryView<'a>> for MemoryBuffer

fn from(view: &MemoryView<'a>) -> Self

Performs the conversion.

impl<'a, T: 'static, '_> TryFrom<&'_ [T]> for MemoryView<'a>

type Error = ()

The type returned in the event of a conversion error.

fn try_from(slice: &[T]) -> Result<Self, Self::Error>

Performs the conversion.