Struct node_testing::client::sc_executor::sp_wasm_interface::Pointer

pub struct Pointer<T> where
    T: PointerType,  { /* fields omitted */ }

Type to represent a pointer in wasm at the host.

Implementations

impl<T> Pointer<T> where
    T: PointerType, 

pub fn new(ptr: u32) -> Pointer<T>

Create a new instance of Self.

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

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() -> Pointer<T>

Create a null pointer.

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

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

Trait Implementations

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

pub 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 for Pointer<T> where
    T: Debug + PointerType, 

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

Formats the value using the given formatter.

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

pub fn from(ptr: u32) -> Pointer<T>

Performs the conversion.

impl<T> FromFFIValue for Pointer<T> where
    T: PointerType, 

type SelfInstance = Pointer<T>

As Self can be an unsized type, it needs to be represented by a sized type at the host. This SelfInstance is the sized type.

pub fn from_ffi_value(
    &mut dyn FunctionContext,
    arg: u32
) -> Result<Pointer<T>, String>

Create SelfInstance from the given

impl<T> IntoFFIValue for Pointer<T> where
    T: PointerType, 

pub fn into_ffi_value(self, &mut dyn FunctionContext) -> Result<u32, String>

Convert self into a ffi value.

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

pub const VALUE_TYPE: ValueType

The type of the value in wasm.

pub fn into_value(self) -> Value

Convert self into a wasm Value.

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

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

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

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

This method tests for !=.

impl<T> RIType for Pointer<T> where
    T: PointerType, 

type FFIType = u32

The ffi type that is used to represent Self.

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

pub fn try_from_value(val: Value) -> Option<Pointer<T>>

Try to convert the given Value into Self.

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

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

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

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