public int StartExecutionLoop()
{
InitializeCurrentSession();
Roundtrip roundtrip = null;
var stopWatch = new Stopwatch();
try
{
while (true)
{
_sessionViewModel.CommandPrompt = GetPrompt();
var queueItem = _executionQueue.Dequeue();
if (queueItem is LoadSessionRequest loadSessionRequest)
{
LoadSession();
if (loadSessionRequest.RunAfterLoad)
{
NotifyExecuteAll();
}
continue;
}
if (queueItem is CodeCompletionRequest codeCompletionRequest)
{
DoCodeCompletion(codeCompletionRequest);
continue;
}
var input = new PSDataCollection <PSObject>();
input.Complete();
var output = new PSDataCollection <PSObject>();
var request = queueItem as ExecutionRequest;
roundtrip = request.Roundtrip;
SessionViewModel.ActiveOutput = roundtrip.ViewModel;
var commandLine = roundtrip.ViewModel.CommandLine;
_powerShell.Commands.Clear();
_powerShell.AddScript(commandLine);
_powerShell.AddCommand("Out-NotebookInternal");
_powerShell.Commands.Commands[0].MergeMyResults(PipelineResultTypes.Error, PipelineResultTypes.Output);
roundtrip.ViewModel.Hidden();
roundtrip.ViewModel.ClearOutput();
roundtrip.ViewModel.ShowExecuting();
try
{
ResetCancelState();
stopWatch.Restart();
var asyncResult = _powerShell.BeginInvoke(input, output);
WaitHandle.WaitAny(new WaitHandle[] { asyncResult.AsyncWaitHandle, _cancelEvent });
_stdout.Flush();
if (_cancelled)
{
_powerShell.Stop();
roundtrip.ViewModel.WriteLine("^C");
}
_powerShell.EndInvoke(asyncResult);
}
catch (RuntimeException ex)
{
DisplayError(ex);
}
stopWatch.Stop();
_sessionViewModel.TimeTaken = stopWatch.Elapsed;
_sessionViewModel.HideProgress();
roundtrip.ViewModel.ShowEditing();
if (_cancelled)
{
foreach (var item in _executionQueue.Enumerate())
{
if (item is ExecutionRequest r)
{
r.Roundtrip.ViewModel.ShowEditing();
}
}
}
if (request.MoveToNext)
{
if (_sessionViewModel.IsLastItem(roundtrip.ViewModel))
{
CreateNewRoundtrip(true);
}
else
{
var rr = _sessionViewModel.GetNextRoundtripViewModel(roundtrip.ViewModel);
rr.Focus();
}
}
}
}
catch (OperationCanceledException)
{
// pass
}
return(_exitCode);
}