mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.0 KiB
74 lines
2.0 KiB
package core
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/state"
|
|
"github.com/ethereum/go-ethereum/vm"
|
|
)
|
|
|
|
type Execution struct {
|
|
vm vm.VirtualMachine
|
|
address, input []byte
|
|
Gas, price, value *big.Int
|
|
object *state.StateObject
|
|
SkipTransfer bool
|
|
}
|
|
|
|
func NewExecution(vm vm.VirtualMachine, address, input []byte, gas, gasPrice, value *big.Int) *Execution {
|
|
return &Execution{vm: vm, address: address, input: input, Gas: gas, price: gasPrice, value: value}
|
|
}
|
|
|
|
func (self *Execution) Addr() []byte {
|
|
return self.address
|
|
}
|
|
|
|
func (self *Execution) Call(codeAddr []byte, caller vm.ClosureRef) ([]byte, error) {
|
|
// Retrieve the executing code
|
|
code := self.vm.Env().State().GetCode(codeAddr)
|
|
|
|
return self.exec(code, codeAddr, caller)
|
|
}
|
|
|
|
func (self *Execution) exec(code, contextAddr []byte, caller vm.ClosureRef) (ret []byte, err error) {
|
|
env := self.vm.Env()
|
|
chainlogger.Debugf("pre state %x\n", env.State().Root())
|
|
|
|
if self.vm.Env().Depth() == vm.MaxCallDepth {
|
|
// Consume all gas (by not returning it) and return a depth error
|
|
return nil, vm.DepthError{}
|
|
}
|
|
|
|
from, to := env.State().GetStateObject(caller.Address()), env.State().GetOrNewStateObject(self.address)
|
|
// Skipping transfer is used on testing for the initial call
|
|
if !self.SkipTransfer {
|
|
err = env.Transfer(from, to, self.value)
|
|
if err != nil {
|
|
caller.ReturnGas(self.Gas, self.price)
|
|
|
|
err = fmt.Errorf("Insufficient funds to transfer value. Req %v, has %v", self.value, from.Balance)
|
|
return
|
|
}
|
|
}
|
|
|
|
snapshot := env.State().Copy()
|
|
defer func() {
|
|
if /*vm.IsDepthErr(err) ||*/ vm.IsOOGErr(err) {
|
|
env.State().Set(snapshot)
|
|
}
|
|
chainlogger.Debugf("post state %x\n", env.State().Root())
|
|
}()
|
|
|
|
self.object = to
|
|
ret, err = self.vm.Run(to, caller, code, self.value, self.Gas, self.price, self.input)
|
|
|
|
return
|
|
}
|
|
|
|
func (self *Execution) Create(caller vm.ClosureRef) (ret []byte, err error, account *state.StateObject) {
|
|
ret, err = self.exec(self.input, nil, caller)
|
|
account = self.vm.Env().State().GetStateObject(self.address)
|
|
|
|
return
|
|
}
|
|
|