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// Copyright 2019-2022 PureStake Inc.
// This file is part of Moonbeam.
// Moonbeam is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Moonbeam is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Moonbeam. If not, see <http://www.gnu.org/licenses/>.
#[macro_export]
macro_rules! impl_evm_runner_precompile_or_eth_xcm {
{} => {
use fp_evm::{CallInfo, CallOrCreateInfo, Context, Transfer};
use frame_support::dispatch::CallableCallFor;
use pallet_evm::{Runner, RunnerError};
use precompile_utils::{prelude::*, evm::handle::with_precompile_handle};
use sp_core::U256;
use sp_runtime::DispatchError;
use sp_std::vec::Vec;
use xcm_primitives::{EthereumXcmTransaction, EthereumXcmTransactionV2};
pub struct EvmRunnerPrecompileOrEthXcm<CallDispatcher, Runtime>(
core::marker::PhantomData<(CallDispatcher, Runtime)>,
);
impl<CallDispatcher, Runtime> Runner<Runtime>
for EvmRunnerPrecompileOrEthXcm<CallDispatcher, Runtime>
where
CallDispatcher: xcm_executor::traits::CallDispatcher<RuntimeCall>,
Runtime: pallet_evm::Config + pallet_ethereum_xcm::Config,
Runtime::RuntimeOrigin: From<pallet_ethereum_xcm::RawOrigin>,
{
type Error = DispatchError;
fn call(
source: H160,
target: H160,
input: Vec<u8>,
value: U256,
gas_limit: u64,
_max_fee_per_gas: Option<U256>,
_max_priority_fee_per_gas: Option<U256>,
_nonce: Option<U256>,
access_list: Vec<(H160, Vec<H256>)>,
_is_transactional: bool,
_validate: bool,
_weight_limit: Option<Weight>,
_transaction_len: Option<u64>,
_config: &fp_evm::Config,
) -> Result<CallInfo, RunnerError<Self::Error>> {
// The `with_precompile_handle` function will execute the closure (and return the
// result in a Some) if and only if there is an available EVM context. Otherwise,
// it will return None.
if let Some((exit_reason, value)) = with_precompile_handle(|precompile_handle| {
let transfer = if value.is_zero() {
None
} else {
Some(Transfer {
source,
target,
value,
})
};
precompile_handle.call(
transfer,
input.clone(),
Some(gas_limit),
false,
&Context {
address: target,
caller: source,
apparent_value: value,
},
)
}) {
Ok(CallInfo {
exit_reason,
used_gas: fp_evm::UsedGas {
standard: U256::default(),
effective: U256::default(),
logs: Default::default(),
weight_info: None,
let xcm_transaction = EthereumXcmTransaction::V2(EthereumXcmTransactionV2 {
gas_limit: gas_limit.into(),
action: pallet_ethereum_xcm::TransactionAction::Call(target),
input: input.try_into().map_err(|_| RunnerError {
error: DispatchError::Exhausted,
weight: Default::default(),
})?,
access_list: Some(access_list),
});
let mut execution_info: Option<CallOrCreateInfo> = None;
pallet_ethereum::catch_exec_info(&mut execution_info, || {
CallDispatcher::dispatch(
RuntimeCall::EthereumXcm(pallet_ethereum_xcm::Call::transact { xcm_transaction }),
RawOrigin::Signed(source.into()).into(),
.map_err(|DispatchErrorWithPostInfo { error, .. }| RunnerError {
error,
})?;
if let Some(CallOrCreateInfo::Call(call_info))= execution_info {
Ok(call_info)
// `execution_info` must have been filled in
Err(RunnerError {
error: DispatchError::Unavailable,
}
fn create(
_source: H160,
_init: Vec<u8>,
_value: U256,
_gas_limit: u64,
_access_list: Vec<(H160, Vec<H256>)>,
) -> Result<fp_evm::CreateInfo, RunnerError<Self::Error>> {
unimplemented!()
fn create2(
_salt: H256,
fn create_force_address(
init: Vec<u8>,
max_fee_per_gas: Option<U256>,
max_priority_fee_per_gas: Option<U256>,
nonce: Option<U256>,
is_transactional: bool,
validate: bool,
weight_limit: Option<Weight>,
transaction_len: Option<u64>,
config: &fp_evm::Config,
force_address: H160,
action: pallet_ethereum_xcm::TransactionAction::Create,
input: init.try_into().map_err(|_| RunnerError {
RuntimeCall::EthereumXcm(pallet_ethereum_xcm::Call::force_transact_as {
transact_as: source,
xcm_transaction,
force_create_address: Some(force_address),
}),
RawOrigin::Root.into(),
if let Some(CallOrCreateInfo::Create(create_info))= execution_info {
Ok(create_info)
fn validate(
_target: Option<H160>,
_input: Vec<u8>,
_evm_config: &fp_evm::Config,
) -> Result<(), RunnerError<Self::Error>> {