Trait Component 

pub trait Component:
    Sealed
    + Serialize
    + DeserializeOwned
    + 'static {
    const TYPE_CODE: TypeCode;
    const SCHEMA_VERSION: u32;

    // Provided methods
    fn canonical_bytes(&self) -> Vec<u8> 
       where Self: Sized { ... }
    fn from_bytes(
        version: u32,
        bytes: &[u8],
    ) -> Result<Box<Self>, DeserializeError>
       where Self: Sized { ... }
    fn approx_size(&self) -> usize
       where Self: Sized { ... }
}

Component — derive-only via #[derive(arkhe_macros::ArkheComponent)]. Default methods use postcard for the canonical-bytes round trip; the macro only needs to emit Sealed + the const declarations.

Required Associated Constants

const TYPE_CODE: TypeCode

Stable dispatch identifier for this component type. Set by the #[arkhe(type_code = N, ...)] attribute on the deriving struct.

const SCHEMA_VERSION: u32

Version tag accompanying canonical bytes. Bumping invalidates older serialized payloads at decode time.

Provided Methods

fn canonical_bytes(&self) -> Vec<u8>

where Self: Sized,

Postcard-canonical byte encoding. Default implementation uses postcard::to_allocvec against the deriving type’s serde impl.

fn from_bytes(version: u32, bytes: &[u8]) -> Result<Box<Self>, DeserializeError>

where Self: Sized,

Inverse of canonical_bytes. Returns DeserializeError::SchemaVersionMismatch if version does not equal Component::SCHEMA_VERSION.

fn approx_size(&self) -> usize

where Self: Sized,

Approximate byte size — defaults to canonical_bytes().len(). Override only if a cheaper estimate is required.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors