Trait TopEncodeOutput

pub trait TopEncodeOutput: Sized {
    type NestedBuffer: NestedEncodeOutput;

    // Required methods
    fn set_slice_u8(self, bytes: &[u8]);
    fn start_nested_encode(&self) -> Self::NestedBuffer;
    fn finalize_nested_encode(self, nb: Self::NestedBuffer);

    // Provided methods
    fn set_u64(self, value: u64) { ... }
    fn set_i64(self, value: i64) { ... }
    fn supports_specialized_type<T: TryStaticCast>() -> bool { ... }
    fn set_specialized<T, H>(
        self,
        _value: &T,
        h: H,
    ) -> Result<(), H::HandledErr>
       where T: TryStaticCast,
             H: EncodeErrorHandler { ... }
}

Specifies objects that can receive the result of a TopEncode computation. in principle from NestedEncode performed on nested items.

All methods consume the object, so they can only be called once.

The trait is used in 3 scenarios:

• SC results
• #[storage_set(...)]
• Serialize async call.

Required Associated Types

type NestedBuffer: NestedEncodeOutput

Type of NestedEncodeOutput that can be spawned to gather serializations of children.

Required Methods

fn set_slice_u8(self, bytes: &[u8])

fn start_nested_encode(&self) -> Self::NestedBuffer

fn finalize_nested_encode(self, nb: Self::NestedBuffer)

Provided Methods

fn set_u64(self, value: u64)

fn set_i64(self, value: i64)

fn supports_specialized_type<T: TryStaticCast>() -> bool

fn set_specialized<T, H>(self, _value: &T, h: H) -> Result<(), H::HandledErr>

where T: TryStaticCast, H: EncodeErrorHandler,

Allows special handling of special types. Also requires an alternative serialization, in case the special handling is not covered. The alternative serialization, else_serialization is only called when necessary and is normally compiled out via monomorphization.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl TopEncodeOutput for &mut Vec<u8>

type NestedBuffer = Vec<u8>