Trait Contract

pub trait Contract: IoType {
    type Slot: IoType;
    type Tmp: IoType;

    const MAIN_CONTRACT_METADATA: &[u8];
    const CRATE_NAME: &str;
}

A trait that indicates the struct is a contact.

Do not implement this trait explicitly! Implementation is automatically generated by the macro which generates smart contract implementation. This trait is required, but not sufficient for proper contract implementation, use #[contract] attribute macro instead.

Required Associated Constants

const MAIN_CONTRACT_METADATA: &[u8]

Main contract metadata, see ContractMetadataKind for encoding details.

More metadata can be contributed by trait implementations.

const CRATE_NAME: &str

Name of the crate where contact is located.

NOTE: It is unlikely to be necessary to interact with this directly.

Required Associated Types

type Slot: IoType

Slot type used by this contract

type Tmp: IoType

Tmp type used by this contract

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