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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package statedb_modifier | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "github.com/ethereum/go-ethereum/params" | ||
| evm "github.com/evmos/ethermint/x/evm/vm" | ||
| "github.com/evmos/ethermint/x/evm/vm/geth" | ||
|
|
||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ibctransfertypes "github.com/cosmos/ibc-go/v6/modules/apps/transfer/types" | ||
| "github.com/ethereum/go-ethereum/core/vm" | ||
| ethermint_statedb "github.com/evmos/ethermint/x/evm/statedb" | ||
| ) | ||
|
|
||
| var ErrUnsupportedStateDB = errors.New("unsupported statedb") | ||
|
|
||
| type IBCTransferKeeper interface { | ||
| Transfer(goCtx context.Context, msg *ibctransfertypes.MsgTransfer) (*ibctransfertypes.MsgTransferResponse, error) | ||
| } | ||
|
|
||
| type EvmutilKeeper interface { | ||
| ConvertERC20ToCoin( | ||
| goCtx context.Context, | ||
| initiator string, | ||
| receiver string, | ||
| kavaERC20Address string, | ||
| amount sdk.Int, | ||
| ) error | ||
| } | ||
|
|
||
| type ModifiedStateDB struct { | ||
| vm.StateDB | ||
| ibcTransferKeeper IBCTransferKeeper | ||
| evmutilKeeper EvmutilKeeper | ||
| } | ||
|
|
||
| func NewModifiedStateDB(stateDB vm.StateDB, ibcTransferKeeper IBCTransferKeeper, evmutilKeeper EvmutilKeeper) *ModifiedStateDB { | ||
| return &ModifiedStateDB{ | ||
| StateDB: stateDB, | ||
| ibcTransferKeeper: ibcTransferKeeper, | ||
| evmutilKeeper: evmutilKeeper, | ||
| } | ||
| } | ||
|
|
||
| func GetEVMConstructor( | ||
| ibcTransferKeeper IBCTransferKeeper, | ||
| evmutilKeeper EvmutilKeeper, | ||
| ) evm.Constructor { | ||
| return func( | ||
| blockCtx vm.BlockContext, | ||
| txCtx vm.TxContext, | ||
| stateDB vm.StateDB, | ||
| chainConfig *params.ChainConfig, | ||
| config vm.Config, | ||
| customPrecompiles evm.PrecompiledContracts, | ||
| ) evm.EVM { | ||
| customStateDB := NewModifiedStateDB(stateDB, ibcTransferKeeper, evmutilKeeper) | ||
| return geth.NewEVM(blockCtx, txCtx, customStateDB, chainConfig, config, customPrecompiles) | ||
| } | ||
| } | ||
|
|
||
| func (s *ModifiedStateDB) Context() (context.Context, error) { | ||
| stateDB, ok := s.StateDB.(*ethermint_statedb.StateDB) | ||
| if !ok { | ||
| return nil, ErrUnsupportedStateDB | ||
| } | ||
|
|
||
| return stateDB.Context(), nil | ||
| } | ||
|
|
||
| func (s *ModifiedStateDB) IBCTransfer(goCtx context.Context, msg *ibctransfertypes.MsgTransfer) (*ibctransfertypes.MsgTransferResponse, error) { | ||
| resp, err := s.ibcTransferKeeper.Transfer(goCtx, msg) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return resp, nil | ||
| } | ||
|
|
||
| func (s *ModifiedStateDB) ConvertERC20ToCoin( | ||
| goCtx context.Context, | ||
| initiator string, | ||
| receiver string, | ||
| kavaERC20Address string, | ||
| amount sdk.Int, | ||
| ) error { | ||
| return s.evmutilKeeper.ConvertERC20ToCoin(goCtx, initiator, receiver, kavaERC20Address, amount) | ||
| } |