Struct sp_wasm_interface::Pointer

pub struct Pointer<T: PointerType> { /* private fields */ }

Type to represent a pointer in wasm at the host.

Implementations

impl<T: PointerType> Pointer<T>

pub fn new(ptr: u32) -> Self

Create a new instance of Self.

pub fn offset(self, offset: u32) -> Option<Self>

Calculate the offset from this pointer.

offset is in units of T. So, 3 means 3 * mem::size_of::<T>() as offset to the pointer.

Returns an Option to respect that the pointer could probably overflow.

pub fn null() -> Self

Create a null pointer.

pub fn cast<R: PointerType>(self) -> Pointer<R>

Cast this pointer of type T to a pointer of type R.

Trait Implementations

impl<T: Clone + PointerType> Clone for Pointer<T>

fn clone(&self) -> Pointer<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + PointerType> Debug for Pointer<T>

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

Formats the value using the given formatter.

impl<T: PointerType> From<Pointer<T>> for u32

fn from(ptr: Pointer<T>) -> Self

Converts to this type from the input type.

impl<T: PointerType> From<Pointer<T>> for u64

fn from(ptr: Pointer<T>) -> Self

Converts to this type from the input type.

impl<T: PointerType> From<Pointer<T>> for usize

fn from(ptr: Pointer<T>) -> Self

Converts to this type from the input type.

impl<T: PointerType> From<u32> for Pointer<T>

fn from(ptr: u32) -> Self

Converts to this type from the input type.

impl<T: PointerType> IntoValue for Pointer<T>

const VALUE_TYPE: ValueType = ValueType::I32

The type of the value in wasm.

fn into_value(self) -> Value

Convert self into a wasm Value.

impl<T: PartialEq + PointerType> PartialEq<Pointer<T>> for Pointer<T>

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<T: PointerType> TryFromValue for Pointer<T>

fn try_from_value(val: Value) -> Option<Self>

Try to convert the given Value into Self.

impl<T: Copy + PointerType> Copy for Pointer<T>

impl<T: Eq + PointerType> Eq for Pointer<T>

impl<T: PointerType> StructuralEq for Pointer<T>

impl<T: PointerType> StructuralPartialEq for Pointer<T>