1 files changed, 70 insertions, 0 deletions
diff --git a/cmd/utils/vm_env.go b/cmd/utils/vm_env.go
new file mode 100644
index 000000000..461a797c2
--- /dev/null
+++ b/cmd/utils/vm_env.go
@@ -0,0 +1,70 @@
+package utils
+
+import (
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/state"
+	"github.com/ethereum/go-ethereum/vm"
+)
+
+type VMEnv struct {
+	state *state.StateDB
+	block *types.Block
+
+	transactor []byte
+	value      *big.Int
+
+	depth int
+	Gas   *big.Int
+}
+
+func NewEnv(state *state.StateDB, block *types.Block, transactor []byte, value *big.Int) *VMEnv {
+	return &VMEnv{
+		state:      state,
+		block:      block,
+		transactor: transactor,
+		value:      value,
+	}
+}
+
+func (self *VMEnv) Origin() []byte        { return self.transactor }
+func (self *VMEnv) BlockNumber() *big.Int { return self.block.Number }
+func (self *VMEnv) PrevHash() []byte      { return self.block.PrevHash }
+func (self *VMEnv) Coinbase() []byte      { return self.block.Coinbase }
+func (self *VMEnv) Time() int64           { return self.block.Time }
+func (self *VMEnv) Difficulty() *big.Int  { return self.block.Difficulty }
+func (self *VMEnv) BlockHash() []byte     { return self.block.Hash() }
+func (self *VMEnv) Value() *big.Int       { return self.value }
+func (self *VMEnv) State() *state.StateDB { return self.state }
+func (self *VMEnv) GasLimit() *big.Int    { return self.block.GasLimit }
+func (self *VMEnv) Depth() int            { return self.depth }
+func (self *VMEnv) SetDepth(i int)        { self.depth = i }
+func (self *VMEnv) AddLog(log state.Log) {
+	self.state.AddLog(log)
+}
+func (self *VMEnv) Transfer(from, to vm.Account, amount *big.Int) error {
+	return vm.Transfer(from, to, amount)
+}
+
+func (self *VMEnv) vm(addr, data []byte, gas, price, value *big.Int) *core.Execution {
+	return core.NewExecution(self, addr, data, gas, price, value)
+}
+
+func (self *VMEnv) Call(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(addr, data, gas, price, value)
+	ret, err := exe.Call(addr, caller)
+	self.Gas = exe.Gas
+
+	return ret, err
+}
+func (self *VMEnv) CallCode(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	exe := self.vm(caller.Address(), data, gas, price, value)
+	return exe.Call(addr, caller)
+}
+
+func (self *VMEnv) Create(caller vm.ClosureRef, addr, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ClosureRef) {
+	exe := self.vm(addr, data, gas, price, value)
+	return exe.Create(caller)
+}