Struct Le

#[repr(packed(1))]
pub struct Le<T>(/* private fields */);

Helper type representing a 1-byte-aligned little-endian value in memory.

This type is used in slice types for Wasmer host bindings. Guest types are not guaranteed to be either aligned or in the native endianness. This type wraps these types and provides explicit getters/setters to interact with the underlying value in a safe host-agnostic manner.

Implementations

impl<T> Le<T>

where T: Endian,

pub fn new(t: T) -> Le<T>

Creates a new Le<T> value where the internals are stored in a way that’s safe to copy into wasm linear memory.

pub fn get(&self) -> T

Reads the value stored in this Le<T>.

This will perform a correct read even if the underlying memory is unaligned, and it will also convert to the host’s endianness for the right representation of T.

pub fn set(&mut self, val: T)

Writes the val to this slot.

This will work correctly even if the underlying memory is unaligned and it will also automatically convert the val provided to an endianness appropriate for WebAssembly (little-endian).

Trait Implementations

impl<T: Copy> Clone for Le<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Endian + Debug> Debug for Le<T>

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

Formats the value using the given formatter.

impl<T: Endian> From<T> for Le<T>

fn from(t: T) -> Le<T>

Converts to this type from the input type.

impl<T: Endian + Ord> Ord for Le<T>

fn cmp(&self, other: &Le<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: Endian + PartialEq> PartialEq<T> for Le<T>

fn eq(&self, other: &T) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Endian + PartialEq> PartialEq for Le<T>

fn eq(&self, other: &Le<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Endian + PartialOrd> PartialOrd for Le<T>

fn partial_cmp(&self, other: &Le<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: AllBytesValid> AllBytesValid for Le<T>

impl<T: Copy> Copy for Le<T>

impl<T: Endian + Eq> Eq for Le<T>