CanTransfer checks whether the from account has enough balance.

ExecuteContract processes a transfer which contains a contract.

GetHashFn returns a GetHashFunc which retrieves hashes by number.

MakeTransfer transfers account.

NewParams creates a new context for use in the EVM.

NewStateDBAdapter creates a new state db with iotex blockchain.

CodeKVNameSpace is the bucket name for code.

ContractKVNameSpace is the bucket name for contract data storage.

PreimageKVNameSpace is the bucket name for preimage data storage.

ErrInconsistentNonce is the error that the nonce is different from executor's nonce.

Params is the context and parameters.