Enum sp_runtime_interface::wasm::WrappedFFIValue[][src]

pub enum WrappedFFIValue<T, O = ()> {
    Wrapped(T),
    WrappedAndOwned(T, O),
}
Expand description

Represents a wrapped ffi value.

It is either the ffi value itself or the ffi value plus some other owned value. By providing support for storing another owned value besides the actual ffi value certain performance optimizations can be applied. For example using the pointer to a Vec<u8>, while using the pointer to a SCALE encoded Vec<u8> that is stored in this wrapper for any other Vec<T>.

Variants

Wrapped(T)
WrappedAndOwned(T, O)

Implementations

Returns the wrapped ffi value.

Trait Implementations

Performs the conversion.

Performs the conversion.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

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. Read more

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

Performs the conversion.

Performs the conversion.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.