public void Increment()
{
var countdownDisposable = new CountdownDisposable(() => { });
countdownDisposable.Count.Should().Be(0);
var disposable1 = countdownDisposable.Increment();
countdownDisposable.Count.Should().Be(1);
var disposable2 = countdownDisposable.Increment();
countdownDisposable.Count.Should().Be(2);
disposable2.Dispose();
countdownDisposable.Count.Should().Be(1);
disposable2.Dispose();
countdownDisposable.Count.Should().Be(1);
disposable2 = countdownDisposable.Increment();
countdownDisposable.Count.Should().Be(2);
disposable1.Dispose();
countdownDisposable.Count.Should().Be(1);
disposable2.Dispose();
countdownDisposable.Count.Should().Be(0);
}
private IDisposable EditTextBuffer()
{
if (_readOnlyRegion != null)
{
using (var edit = _historyTextBuffer.CreateReadOnlyRegionEdit()) {
edit.RemoveReadOnlyRegion(_readOnlyRegion);
_readOnlyRegion = null;
edit.Apply();
}
}
HistoryChanging?.Invoke(this, new EventArgs());
return(_textBufferIsEditable.Increment());
}
public async Task <ExecutionResult> ExecuteCodeAsync(string text)
{
var start = 0;
var end = text.IndexOf('\n');
if (end == -1)
{
return(ExecutionResult.Success);
}
try {
using (Session.DisableMutatedOnReadConsole()) {
while (end != -1)
{
var line = text.Substring(start, end - start + 1);
start = end + 1;
end = text.IndexOf('\n', start);
using (var request = await Session.BeginInteractionAsync()) {
using (_evaluatorRequest.Increment()) {
if (line.Length >= request.MaxLength)
{
CurrentWindow.WriteErrorLine(string.Format(Resources.InputIsTooLong, request.MaxLength));
return(ExecutionResult.Failure);
}
await request.RespondAsync(line);
}
}
}
}
return(ExecutionResult.Success);
} catch (RHostDisconnectedException rhdex) {
WriteError(rhdex.Message);
return(ExecutionResult.Success);
} catch (OperationCanceledException) {
// Cancellation reason was already reported via RSession.Error and printed out;
// Return success cause connection lost doesn't mean that RHost died
return(ExecutionResult.Success);
} catch (Exception ex) {
await _coreShell.ShowErrorMessageAsync(ex.ToString());
return(ExecutionResult.Failure);
} finally {
History.AddToHistory(text);
}
}
public void Create()
{
var callCount = 0;
Action callback = () => callCount++;
var countdownDisposable = new CountdownDisposable(callback);
countdownDisposable.Count.Should().Be(0);
callCount.Should().Be(0);
var disposable = countdownDisposable.Increment();
countdownDisposable.Count.Should().Be(1);
callCount.Should().Be(0);
disposable.Dispose();
countdownDisposable.Count.Should().Be(0);
callCount.Should().Be(1);
}
public IDisposable DisableMutatedOnReadConsole()
{
return(_disableMutatingOnReadConsole.Increment());
}
public IDisposable StartBatchUpdate() => _batchUpdate.Increment();