public async Task FunctionInfoTest1(string name)
{
var functionInfo = await _functionIndex.GetFunctionInfoAsync(name);
functionInfo.Should().NotBeNull();
functionInfo.Name.Should().Be(name);
functionInfo.Description.Should().NotBeEmpty();
functionInfo.Signatures.Should().ContainSingle()
.Which.Arguments.Should().ContainSingle();
var locusPoints = new List <int>();
functionInfo.Signatures[0].GetSignatureString(name, locusPoints).Should().Be(name + "(x)");
locusPoints.Should().Equal(4, 5);
}
private IEnumerable <IRFunctionSignatureHelp> GetSignaturesAsync(RFunctionSignatureInfo signatureInfo, IRIntellisenseContext context, Action <IEnumerable <IRFunctionSignatureHelp> > callback)
{
var snapshot = context.EditorBuffer.CurrentSnapshot;
var position = Math.Min(Math.Min(signatureInfo.FunctionCall.SignatureEnd, context.Position), snapshot.Length);
var applicableToSpan = GetApplicableSpan(signatureInfo, context);
IFunctionInfo functionInfo = null;
string packageName = null;
// First try user-defined function
if (string.IsNullOrEmpty(signatureInfo.PackageName))
{
functionInfo = context.AstRoot.GetUserFunctionInfo(signatureInfo.FunctionName, position);
}
else
{
packageName = signatureInfo.PackageName;
}
if (functionInfo != null)
{
return(MakeSignatures(functionInfo, applicableToSpan, context));
}
if (callback != null)
{
// Get collection of function signatures from documentation (parsed RD file)
_functionIndex.GetFunctionInfoAsync(signatureInfo.FunctionName, packageName, (fi, o) => {
InvokeSignaturesCallback(fi, applicableToSpan, context, callback);
});
}
return(null);
}
private static async Task GetFunctionInfoFromPackageAsync(IFunctionIndex functionIndex, string functionName, string packageName, Action <IFunctionInfo, object> callback, object parameter)
{
IFunctionInfo fi = null;
packageName = packageName ?? await functionIndex.GetPackageNameAsync(functionName);
if (!string.IsNullOrEmpty(packageName))
{
fi = await functionIndex.GetFunctionInfoAsync(functionName, packageName);
}
await functionIndex.Services.MainThread().SwitchToAsync();
callback(fi, parameter);
}
private void TryFetchDescription()
{
Task.Run(async() => {
SetDescription(await _functionIndex.GetFunctionInfoAsync(this.DisplayText));
}).Wait(500);
}