Struct CallbackClosure

pub struct CallbackClosure<M>
where
    M: ManagedTypeApi + ErrorApi,
{ /* private fields */ }

Object that encodes full async callback data.

Should not be created manually, we have auto-generated call proxies that will create this object in a type-safe manner.

How it functions:

• With the old async call mechanism, this data is serialized to storage.
• With the new promises framework, the VM handles this data.

In both cases the framework hides all the magic, the developer shouldn’t worry about it.

Implementations

impl<M: ManagedTypeApi + ErrorApi> CallbackClosure<M>

pub fn new(callback_name: &'static str) -> Self

pub fn push_endpoint_arg<T: TopEncodeMulti>(&mut self, endpoint_arg: &T)

pub fn save_to_storage<A: BlockchainApi + StorageWriteApi>(&self)

Trait Implementations

impl<M> TopEncode for CallbackClosure<M>

where M: ManagedTypeApi + ErrorApi,

fn top_encode_or_handle_err<O, H>( &self, output: O, __h__: H, ) -> Result<(), H::HandledErr>

where O: TopEncodeOutput, H: EncodeErrorHandler,

Version of top_encode that can handle errors as soon as they occur. For instance in can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.

fn top_encode<O>(&self, output: O) -> Result<(), EncodeError>

where O: TopEncodeOutput,

Attempt to serialize the value to ouput.

impl<Api> TxAsyncCallCallback<Api> for CallbackClosure<Api>

where Api: CallTypeApi + StorageWriteApi,

fn save_callback_closure_to_storage(&self)

impl<Api> TxPromisesCallback<Api> for CallbackClosure<Api>

where Api: CallTypeApi,

fn callback_name(&self) -> &'static str

fn overwrite_with_serialized_args( &self, cb_closure_args_serialized: &mut ManagedBuffer<Api>, )

fn gas_for_callback(&self) -> u64

impl<Api> TxResultHandler<TxScEnv<Api>> for CallbackClosure<Api>

where Api: CallTypeApi,

type OriginalResult = ()