Trait elrond_wasm::contract_base::ContractBase

pub trait ContractBase: Sized {
    type Api: VMApi;
    fn raw_vm_api(&self) -> Self::Api;

    fn call_value(&self) -> CallValueWrapper<Self::Api> { ... }
    fn send(&self) -> SendWrapper<Self::Api> { ... }
    fn type_manager(&self) -> Self::Api { ... }
    fn blockchain(&self) -> BlockchainWrapper<Self::Api> { ... }
    fn crypto(&self) -> CryptoWrapper<Self::Api> { ... }
    fn serializer(&self) -> ManagedSerializer<Self::Api> { ... }
    fn error(&self) -> ErrorHelper<Self::Api> { ... }
    fn print(&self) -> PrintHelper<Self::Api> { ... }
}

Interface to be used by the actual smart contract code.

Note: contracts and the api are not mutable. They simply pass on/retrieve data to/from the protocol. When mocking the blockchain state, we use the Rc/RefCell pattern to isolate mock state mutability from the contract interface.

Associated Types

type Api: VMApi

Required methods

fn raw_vm_api(&self) -> Self::Api

Grants direct access to the underlying VM API. Avoid using it directly.

Provided methods

fn call_value(&self) -> CallValueWrapper<Self::Api>

Gateway into the call value retrieval functionality. The payment annotations should normally be the ones to handle this, but the developer is also given direct access to the API.

fn send(&self) -> SendWrapper<Self::Api>

Gateway to the functionality related to sending transactions from the current contract.

fn type_manager(&self) -> Self::Api

Managed types API. Required to create new instances of managed types.

fn blockchain(&self) -> BlockchainWrapper<Self::Api>

Gateway blockchain info related to the current transaction and to accounts.

fn crypto(&self) -> CryptoWrapper<Self::Api>

Stateless crypto functions provided by the Arwen VM.

fn serializer(&self) -> ManagedSerializer<Self::Api>

Component that provides contract developers access to highly optimized manual serialization and deserialization.

fn error(&self) -> ErrorHelper<Self::Api>

fn print(&self) -> PrintHelper<Self::Api>

Implementors