private async Task <List <AnalysisVariable> > GetKeywordParameters(string expr, string originalName)
{
List <AnalysisVariable> paramVars = new List <AnalysisVariable>();
if (expr.IndexOf('.') == -1)
{
// let's check if we'r re-naming a keyword argument...
ITrackingSpan span = _view.GetCaretSpan();
var sigs = await _uiThread.InvokeTask(() => _serviceProvider.GetPythonToolsService().GetSignaturesAsync(_view, _view.TextBuffer.CurrentSnapshot, span))
.ConfigureAwait(false);
foreach (var sig in sigs.Signatures)
{
PythonSignature overloadRes = sig as PythonSignature;
if (overloadRes != null)
{
foreach (PythonParameter param in overloadRes.Parameters)
{
if (param.Name == originalName && param.Variables != null)
{
paramVars.AddRange(param.Variables);
}
}
}
}
}
return(paramVars);
}
private void Backspace()
{
if (_sigHelpSession != null)
{
SnapshotPoint?caretPoint = GetCaretPoint();
if (caretPoint != null && caretPoint.Value.Position != 0)
{
string deleting = _textView.TextSnapshot.GetText(caretPoint.Value.Position - 1, 1);
if (deleting == ",")
{
PythonSignature sig = _sigHelpSession.SelectedSignature as PythonSignature;
if (sig != null)
{
int curParam = sig.Parameters.IndexOf(sig.CurrentParameter);
if (curParam > 0)
{
sig.SetCurrentParameter(sig.Parameters[curParam - 1]);
}
}
}
else if (deleting == "(")
{
// TODO: See if we should pop to an outer nesting of signature help
_sigHelpSession.Dismiss();
}
}
}
}
private void CommaFindBestSignature(int curParam)
{
// see if we have a signature which accomodates this...
// TODO: We should also take into account param arrays
// TODO: We should also get the types of the arguments and use that to
// pick the best signature when the signature includes types.
foreach (var availableSig in _sigHelpSession.Signatures)
{
if (availableSig.Parameters.Count > (curParam + 1))
{
_sigHelpSession.SelectedSignature = availableSig;
PythonSignature sig = availableSig as PythonSignature;
if (sig != null)
{
sig.SetCurrentParameter(sig.Parameters[curParam + 1]);
}
break;
}
}
}
private void CommaAdvanceParameter()
{
// we advance to the next parameter
// TODO: Take into account params arrays
// TODO: need to parse and see if we have keyword arguments entered into the current signature yet
PythonSignature sig = _sigHelpSession.SelectedSignature as PythonSignature;
if (sig != null)
{
int curParam = sig.Parameters.IndexOf(sig.CurrentParameter);
if (curParam != -1)
{
if (curParam < sig.Parameters.Count - 1)
{
sig.SetCurrentParameter(sig.Parameters[curParam + 1]);
}
else
{
CommaFindBestSignature(curParam);
}
}
}
}
