mirror of https://github.com/poanetwork/quorum.git
97 lines
2.5 KiB
Go
97 lines
2.5 KiB
Go
package core
|
|
|
|
import (
|
|
"math/big"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
)
|
|
|
|
type Execution struct {
|
|
env vm.Environment
|
|
address *common.Address
|
|
input []byte
|
|
evm vm.VirtualMachine
|
|
|
|
Gas, price, value *big.Int
|
|
}
|
|
|
|
func NewExecution(env vm.Environment, address *common.Address, input []byte, gas, gasPrice, value *big.Int) *Execution {
|
|
exe := &Execution{env: env, address: address, input: input, Gas: gas, price: gasPrice, value: value}
|
|
exe.evm = vm.NewVm(env)
|
|
return exe
|
|
}
|
|
|
|
func (self *Execution) Call(codeAddr common.Address, caller vm.ContextRef) ([]byte, error) {
|
|
// Retrieve the executing code
|
|
code := self.env.State().GetCode(codeAddr)
|
|
|
|
return self.exec(&codeAddr, code, caller)
|
|
}
|
|
|
|
func (self *Execution) Create(caller vm.ContextRef) (ret []byte, err error, account *state.StateObject) {
|
|
ret, err = self.exec(nil, self.input, caller)
|
|
account = self.env.State().GetStateObject(*self.address)
|
|
return
|
|
}
|
|
|
|
func (self *Execution) exec(contextAddr *common.Address, code []byte, caller vm.ContextRef) (ret []byte, err error) {
|
|
start := time.Now()
|
|
|
|
env := self.env
|
|
evm := self.evm
|
|
if env.Depth() > int(params.CallCreateDepth.Int64()) {
|
|
caller.ReturnGas(self.Gas, self.price)
|
|
|
|
return nil, vm.DepthError{}
|
|
}
|
|
|
|
vsnapshot := env.State().Copy()
|
|
var createAccount bool
|
|
if self.address == nil {
|
|
// Generate a new address
|
|
nonce := env.State().GetNonce(caller.Address())
|
|
env.State().SetNonce(caller.Address(), nonce+1)
|
|
|
|
addr := crypto.CreateAddress(caller.Address(), nonce)
|
|
|
|
self.address = &addr
|
|
createAccount = true
|
|
}
|
|
snapshot := env.State().Copy()
|
|
|
|
var (
|
|
from = env.State().GetStateObject(caller.Address())
|
|
to *state.StateObject
|
|
)
|
|
if createAccount {
|
|
to = env.State().CreateAccount(*self.address)
|
|
} else {
|
|
to = env.State().GetOrNewStateObject(*self.address)
|
|
}
|
|
|
|
err = env.Transfer(from, to, self.value)
|
|
if err != nil {
|
|
env.State().Set(vsnapshot)
|
|
|
|
caller.ReturnGas(self.Gas, self.price)
|
|
|
|
return nil, ValueTransferErr("insufficient funds to transfer value. Req %v, has %v", self.value, from.Balance())
|
|
}
|
|
|
|
context := vm.NewContext(caller, to, self.value, self.Gas, self.price)
|
|
context.SetCallCode(contextAddr, code)
|
|
|
|
ret, err = evm.Run(context, self.input)
|
|
evm.Printf("message call took %v", time.Since(start)).Endl()
|
|
if err != nil {
|
|
env.State().Set(snapshot)
|
|
}
|
|
|
|
return
|
|
}
|