/// <summary>
/// Appends given text to the last input span (standard input or active code input).
/// </summary>
private void AppendInput(string text)
{
var snapshot = _window._projectionBuffer.CurrentSnapshot;
var spanCount = snapshot.SpanCount;
var inputSpan = snapshot.GetSourceSpan(spanCount - 1);
Debug.Assert(_window.GetSpanKind(inputSpan.Snapshot) == ReplSpanKind.Language ||
_window.GetSpanKind(inputSpan.Snapshot) == ReplSpanKind.StandardInput);
var buffer = inputSpan.Snapshot.TextBuffer;
var span = inputSpan.Span;
using (var edit = buffer.CreateEdit())
{
edit.Insert(edit.Snapshot.Length, text);
edit.Apply();
}
var replSpan = new CustomTrackingSpan(
buffer.CurrentSnapshot,
new Span(span.Start, span.Length + text.Length),
PointTrackingMode.Negative,
PointTrackingMode.Positive);
ReplaceProjectionSpan(spanCount - 1, replSpan);
_window.Caret.EnsureVisible();
}
public async Task <ExecutionResult> ResetAsync(bool initialize)
{
try
{
Debug.Assert(State != State.Resetting, "The button should have been disabled.");
if (_window._stdInputStart != null)
{
CancelStandardInput();
}
_window._buffer.Flush();
if (State == State.WaitingForInput)
{
var snapshot = _window._projectionBuffer.CurrentSnapshot;
var spanCount = snapshot.SpanCount;
Debug.Assert(_window.GetSpanKind(snapshot.GetSourceSpan(spanCount - 1)) == ReplSpanKind.Language);
StoreUncommittedInput();
RemoveProjectionSpans(spanCount - 2, 2);
_window._currentLanguageBuffer = null;
}
State = State.Resetting;
var executionResult = await _window._evaluator.ResetAsync(initialize).ConfigureAwait(true);
Debug.Assert(_window.OnUIThread()); // ConfigureAwait should bring us back to the UI thread.
Debug.Assert(State == State.Resetting, $"Unexpected state {State}");
FinishExecute(executionResult.IsSuccessful);
return(executionResult);
}
catch (Exception e) when(_window.ReportAndPropagateException(e))
{
throw ExceptionUtilities.Unreachable;
}
}