public UInt160 GetExecutionResult(Neo.Network.P2P.Payloads.InvocationTransaction transaction)
{
UInt160 contractHash = null;
using (ApplicationEngine engine = new ApplicationEngine(
TriggerType.Application,
transaction,
Blockchain.Singleton.GetSnapshot().Clone(),
transaction.Gas,
true))
{
engine.LoadScript(transaction.Script);
while (
!engine.State.HasFlag(VMState.FAULT) &&
engine.InvocationStack.Any() &&
engine.CurrentContext.InstructionPointer != engine.CurrentContext.Script.Length)
{
var nextOpCode = engine.CurrentContext.NextInstruction.OpCode;
if (nextOpCode == OpCode.APPCALL || nextOpCode == OpCode.TAILCALL)
{
contractHash = new UInt160(engine.CurrentContext.NextInstruction.Operand);
break;
}
var executeNextMethod = typeof(ExecutionEngine).GetMethod("ExecuteNext", BindingFlags.NonPublic | BindingFlags.Instance);
executeNextMethod.Invoke(engine, new object[0]);
}
}
return(contractHash);
}
public UInt160 GetExecutionResult(Neo.Network.P2P.Payloads.InvocationTransaction transaction)
{
UInt160 contractHash = null;
using (ApplicationEngine engine = new ApplicationEngine(
TriggerType.Application,
transaction,
Blockchain.Singleton.GetSnapshot().Clone(),
transaction.Gas,
true))
{
engine.LoadScript(transaction.Script);
while (
!engine.State.HasFlag(VMState.FAULT) &&
engine.InvocationStack.Any() &&
engine.CurrentContext.InstructionPointer != engine.CurrentContext.Script.Length)
{
var nextOpCode = engine.CurrentContext.NextInstruction;
if (nextOpCode == OpCode.APPCALL || nextOpCode == OpCode.TAILCALL)
{
var startingPosition = engine.CurrentContext.InstructionPointer;
engine.CurrentContext.InstructionPointer = startingPosition + 1;
var reader = engine.CurrentContext.GetFieldValue <BinaryReader>("OpReader");
var rawContractHash = reader.ReadBytes(20);
if (rawContractHash.All(x => x == 0))
{
rawContractHash = engine.CurrentContext.EvaluationStack.Pop().GetByteArray();
}
engine.CurrentContext.InstructionPointer = startingPosition;
contractHash = new UInt160(rawContractHash);
break;
}
engine.StepInto();
}
}
return(contractHash);
}