Struct elrond_wasm::contract_base::CallValueWrapper

pub struct CallValueWrapper<A> where
    A: CallValueApi + ErrorApi + ManagedTypeApi,  { /* fields omitted */ }

Implementations

impl<A> CallValueWrapper<A> where
    A: CallValueApi + ErrorApi + ManagedTypeApi, 

pub fn egld_value(&self) -> BigUint<A>

Retrieves the EGLD call value from the VM. Will return 0 in case of an ESDT transfer (cannot have both EGLD and ESDT transfer simultaneously).

pub fn all_esdt_transfers(&self) -> ManagedVec<A, EsdtTokenPayment<A>>

Returns all ESDT transfers that accompany this SC call. Will return 0 results if nothing was transfered, or just EGLD. Fully managed underlying types, very efficient.

pub fn esdt_value(&self) -> BigUint<A>

Retrieves the ESDT call value from the VM. Will return 0 in case of an EGLD transfer (cannot have both EGLD and ESDT transfer simultaneously). Warning, not tested with multi transfer, use all_esdt_transfers instead!

pub fn token(&self) -> TokenIdentifier<A>

Returns the call value token identifier of the current call. The identifier is wrapped in a TokenIdentifier object, to hide underlying logic.

A note on implementation: even though the underlying api returns an empty name for EGLD, but the EGLD TokenIdentifier is serialized as EGLD. Warning, not tested with multi transfer, use all_esdt_transfers instead!

pub fn esdt_token_nonce(&self) -> u64

Returns the nonce of the received ESDT token. Will return 0 in case of EGLD or fungible ESDT transfer. Warning, not tested with multi transfer, use all_esdt_transfers instead!

pub fn esdt_token_type(&self) -> EsdtTokenType

Returns the ESDT token type. Will return “Fungible” for EGLD. Warning, not tested with multi transfer, use all_esdt_transfers instead!

pub fn payment_token_pair(&self) -> (BigUint<A>, TokenIdentifier<A>)

Returns both the call value (either EGLD or ESDT) and the token identifier. Especially used in the `#[payable(“*”)] auto-generated snippets. The method might seem redundant, but there is such a hook in Arwen that might be used in this scenario in the future. TODO: replace with multi transfer handling everywhere