public async Task <CompletionResult> GetCompletionData(int position, char?triggerChar, bool useSignatureHelp)
{
IList <ICompletionDataEx> completionData = null;
IOverloadProviderEx overloadProvider = null;
bool?isCompletion = null;
var document = _roslynHost.GetDocument(_documentId);
if (useSignatureHelp || triggerChar != null)
{
var signatureHelpProvider = _roslynHost.GetService <ISignatureHelpProvider>();
var isSignatureHelp = useSignatureHelp || signatureHelpProvider.IsTriggerCharacter(triggerChar.Value);
if (isSignatureHelp)
{
var signatureHelp = await signatureHelpProvider.GetItemsAsync(
document,
position,
new SignatureHelpTriggerInfo(
useSignatureHelp
? SignatureHelpTriggerReason.InvokeSignatureHelpCommand
: SignatureHelpTriggerReason.TypeCharCommand, triggerChar))
.ConfigureAwait(false);
if (signatureHelp != null)
{
overloadProvider = new RoslynOverloadProvider(signatureHelp);
}
}
else
{
isCompletion = await CompletionService.IsCompletionTriggerCharacterAsync(document, position - 1).ConfigureAwait(false);
}
}
if (overloadProvider == null && isCompletion != false)
{
var data = await CompletionService.GetCompletionListAsync(
document,
position,
triggerChar != null
?CompletionTriggerInfo.CreateTypeCharTriggerInfo(triggerChar.Value)
: CompletionTriggerInfo.CreateInvokeCompletionTriggerInfo()
).ConfigureAwait(false);
completionData = data?.Items.Select(item => new RoslynCompletionData(item, _snippetService.SnippetManager)).ToArray <ICompletionDataEx>()
?? Array.Empty <ICompletionDataEx>();
}
return(new CompletionResult(completionData, overloadProvider));
}
public Task <bool> IsCompletionTriggerCharacter(int position)
{
return(CompletionService.IsCompletionTriggerCharacterAsync(GetCurrentDocument(), position));
}