private void Start(bool incomingStream)
{
if (this.disposed)
{
throw PSTraceSource.NewObjectDisposedException("PipelineProcessor");
}
if (this.Stopping)
{
throw new PipelineStoppedException();
}
if (!this.executionStarted)
{
if ((this._commands == null) || (this._commands.Count == 0))
{
throw PSTraceSource.NewInvalidOperationException("PipelineStrings", "PipelineExecuteRequiresAtLeastOneCommand", new object[0]);
}
CommandProcessorBase base2 = this._commands[0];
if ((base2 == null) || (base2.CommandRuntime == null))
{
throw PSTraceSource.NewInvalidOperationException("PipelineStrings", "PipelineExecuteRequiresAtLeastOneCommand", new object[0]);
}
if (this.executionScope == null)
{
this.executionScope = base2.Context.EngineSessionState.CurrentScope;
}
CommandProcessorBase base3 = this._commands[this._commands.Count - 1];
if ((base3 == null) || (base3.CommandRuntime == null))
{
throw PSTraceSource.NewInvalidOperationException();
}
if (this.ExternalSuccessOutput != null)
{
base3.CommandRuntime.OutputPipe.ExternalWriter = this.ExternalSuccessOutput;
}
this.SetExternalErrorOutput();
if ((this.ExternalInput == null) && !incomingStream)
{
base2.CommandRuntime.IsClosed = true;
}
IDictionary variableValue = base2.Context.GetVariableValue(SpecialVariables.PSDefaultParameterValuesVarPath, false) as IDictionary;
this.executionStarted = true;
int[] numArray = new int[this._commands.Count + 1];
for (int i = 0; i < this._commands.Count; i++)
{
CommandProcessorBase base4 = this._commands[i];
if (base4 == null)
{
throw PSTraceSource.NewInvalidOperationException();
}
Guid engineActivityId = base4.Context.CurrentRunspace.EngineActivityId;
Guid activityId = EtwActivity.CreateActivityId();
EtwActivity.SetActivityId(activityId);
base4.PipelineActivityId = activityId;
MshLog.LogCommandLifecycleEvent(base4.Context, CommandState.Started, base4.Command.MyInvocation);
InvocationInfo myInvocation = base4.Command.MyInvocation;
myInvocation.PipelinePosition = i + 1;
myInvocation.PipelineLength = this._commands.Count;
myInvocation.PipelineIterationInfo = numArray;
base4.DoPrepare(variableValue);
myInvocation.ExpectingInput = base4.IsPipelineInputExpected();
}
this.SetupOutErrorVariable();
for (int j = 0; j < this._commands.Count; j++)
{
this._commands[j].DoBegin();
}
}
}