pub struct Codec<T: Codec>(_);
Expand description

The implementation of the pass by codec strategy. This strategy uses a SCALE encoded representation of the type between wasm and the host.

Use this type as associated type for PassBy to implement this strategy for a type.

This type expects the type that wants to implement this strategy as generic parameter.

PassByCodec is a derive macro to implement this strategy.

Example

#[derive(codec::Encode, codec::Decode)]
struct Test;

impl PassBy for Test {
    type PassBy = Codec<Self>;
}

Trait Implementations

Convert the given instance to the ffi value. Read more

Create T from the given ffi value. Read more

The type is passed as u64.

The u64 value is build by length 32bit << 32 | pointer 32bit

Self is encoded and the length and the pointer are taken from the encoded vector.

The ffi type that is used to represent Self.

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.

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.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more