1 files changed, 68 insertions, 0 deletions
diff --git a/core/vm/noop.go b/core/vm/noop.go
new file mode 100644
index 000000000..ca7d1055a
--- /dev/null
+++ b/core/vm/noop.go
@@ -0,0 +1,68 @@
+// Copyright 2016 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vm
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+func NoopCanTransfer(db StateDB, from common.Address, balance *big.Int) bool {
+	return true
+}
+func NoopTransfer(db StateDB, from, to common.Address, amount *big.Int) {}
+
+type NoopEVMCallContext struct{}
+
+func (NoopEVMCallContext) Call(caller ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
+	return nil, nil
+}
+func (NoopEVMCallContext) CallCode(caller ContractRef, addr common.Address, data []byte, gas, value *big.Int) ([]byte, error) {
+	return nil, nil
+}
+func (NoopEVMCallContext) Create(caller ContractRef, data []byte, gas, value *big.Int) ([]byte, common.Address, error) {
+	return nil, common.Address{}, nil
+}
+func (NoopEVMCallContext) DelegateCall(me ContractRef, addr common.Address, data []byte, gas *big.Int) ([]byte, error) {
+	return nil, nil
+}
+
+type NoopStateDB struct{}
+
+func (NoopStateDB) GetAccount(common.Address) Account                 { return nil }
+func (NoopStateDB) CreateAccount(common.Address) Account              { return nil }
+func (NoopStateDB) SubBalance(common.Address, *big.Int)               {}
+func (NoopStateDB) AddBalance(common.Address, *big.Int)               {}
+func (NoopStateDB) GetBalance(common.Address) *big.Int                { return nil }
+func (NoopStateDB) GetNonce(common.Address) uint64                    { return 0 }
+func (NoopStateDB) SetNonce(common.Address, uint64)                   {}
+func (NoopStateDB) GetCodeHash(common.Address) common.Hash            { return common.Hash{} }
+func (NoopStateDB) GetCode(common.Address) []byte                     { return nil }
+func (NoopStateDB) SetCode(common.Address, []byte)                    {}
+func (NoopStateDB) GetCodeSize(common.Address) int                    { return 0 }
+func (NoopStateDB) AddRefund(*big.Int)                                {}
+func (NoopStateDB) GetRefund() *big.Int                               { return nil }
+func (NoopStateDB) GetState(common.Address, common.Hash) common.Hash  { return common.Hash{} }
+func (NoopStateDB) SetState(common.Address, common.Hash, common.Hash) {}
+func (NoopStateDB) Suicide(common.Address) bool                       { return false }
+func (NoopStateDB) HasSuicided(common.Address) bool                   { return false }
+func (NoopStateDB) Exist(common.Address) bool                         { return false }
+func (NoopStateDB) Empty(common.Address) bool                         { return false }
+func (NoopStateDB) RevertToSnapshot(int)                              {}
+func (NoopStateDB) Snapshot() int                                     { return 0 }
+func (NoopStateDB) AddLog(*Log)                                       {}