Pointer

gp_wasm_interface

Struct Pointer 

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pub struct Pointer<T>
where
    T: PointerType,
{ /* private fields */ }
Expand description

Type to represent a pointer in wasm at the host.

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

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

Create a new instance of Self.

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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.

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pub fn null() -> Pointer<T>

Create a null pointer.

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

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

Trait Implementations§

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

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

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T> Debug for Pointer<T>
where T: Debug + PointerType,

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

Formats the value using the given formatter. Read more
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impl<T> From<u32> for Pointer<T>
where T: PointerType,

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

Converts to this type from the input type.
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impl<T> IntoValue for Pointer<T>
where T: PointerType,

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const VALUE_TYPE: ValueType = ValueType::I32

The type of the value in wasm.
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fn into_value(self) -> Value

Convert self into a wasm Value.
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impl<T> PartialEq for Pointer<T>
where T: PartialEq + PointerType,

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T> TryFromValue for Pointer<T>
where T: PointerType,

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

Try to convert the given Value into Self.
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impl<T> Copy for Pointer<T>
where T: Copy + PointerType,

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

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

Auto Trait Implementations§

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impl<T> Freeze for Pointer<T>

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impl<T> RefUnwindSafe for Pointer<T>
where T: RefUnwindSafe,

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impl<T> Send for Pointer<T>
where T: Send,

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impl<T> Sync for Pointer<T>
where T: Sync,

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impl<T> Unpin for Pointer<T>
where T: Unpin,

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impl<T> UnwindSafe for Pointer<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,