Method call_function

language/evm/exec-utils/src/exec.rs:192–216

Call a contract method with the given signature. The signature is represented by a string consisting of the name of the method and a list of parameter types (e.g. `foo(uint256,uint256)`).

(
        &mut self,
        caller_address: H160,
        contract_address: H160,
        eth_amount: U256,
        method_sig: &str,
        method_args: &[u8],
    )

    /// The signature is represented by a string consisting of the name of the method and
    /// a list of parameter types (e.g. `foo(uint256,uint256)`).
    pub fn call_function(
        &mut self,
        caller_address: H160,
        contract_address: H160,
        eth_amount: U256,
        method_sig: &str,
        method_args: &[u8],
    ) -> (ExitReason, Vec<u8>) {
        self.transact(|exec| {
            let mut data = vec![];
            data.extend(derive_method_selector(method_sig));
            data.extend(method_args);

            let (exit_reason, buffer) = exec.transact_call(
                caller_address,
                contract_address,
                eth_amount,
                data,
                u64::MAX,
                vec![],
            );

            (exit_reason, buffer)
        })
    }

    /// Execute custom EVM opecodes.
    /// You are still required to specify a caller address and a contract address, even though a contract may not exist