public void Signature(string content, int position, string expectedFunctionName, int expectedSignatureEnd)
{
AstRoot ast = RParser.Parse(content);
int signatureEnd;
string functionName = SignatureHelp.GetFunctionNameFromBuffer(ast, ref position, out signatureEnd);
functionName.Should().Be(expectedFunctionName);
signatureEnd.Should().Be(expectedSignatureEnd);
}
internal bool AugmentQuickInfoSession(AstRoot ast, int position, IQuickInfoSession session,
IList <object> quickInfoContent, out ITrackingSpan applicableToSpan,
Action <object, string> retriggerAction, string packageName)
{
int signatureEnd = position;
applicableToSpan = null;
string functionName = SignatureHelp.GetFunctionNameFromBuffer(ast, ref position, out signatureEnd);
if (!string.IsNullOrEmpty(functionName))
{
ITextSnapshot snapshot = session.TextView.TextBuffer.CurrentSnapshot;
position = Math.Min(signatureEnd, position);
int start = Math.Min(position, snapshot.Length);
int end = Math.Min(signatureEnd, snapshot.Length);
applicableToSpan = snapshot.CreateTrackingSpan(Span.FromBounds(start, end), SpanTrackingMode.EdgeInclusive);
packageName = packageName ?? _packageName;
_packageName = null;
var functionInfo = FunctionIndex.GetFunctionInfo(functionName, packageName, retriggerAction, session);
if (functionInfo != null && functionInfo.Signatures != null)
{
foreach (ISignatureInfo sig in functionInfo.Signatures)
{
string signatureString = sig.GetSignatureString(functionName);
int wrapLength = Math.Min(SignatureInfo.MaxSignatureLength, signatureString.Length);
string text;
if (string.IsNullOrWhiteSpace(functionInfo.Description))
{
text = string.Empty;
}
else
{
/// VS may end showing very long tooltip so we need to keep
/// description reasonably short: typically about
/// same length as the function signature.
text = signatureString + "\r\n" + functionInfo.Description.Wrap(wrapLength);
}
if (text.Length > 0)
{
quickInfoContent.Add(text);
return(true);
}
}
}
}
return(false);
}