private static bool MatchesFilterText(CompletionHelper helper, CompletionItem item, SourceText text, Dictionary <TextSpan, string> textSpanToText)
{
var filterText = GetFilterText(item, text, textSpanToText);
if (string.IsNullOrEmpty(filterText))
{
return(true);
}
return(helper.MatchesFilterText(item, filterText));
}
public async Task <CompletionResult> GetCompletionData(int position, char?triggerChar, bool useSignatureHelp)
{
IList <ICompletionDataEx> completionData = null;
IOverloadProviderEx overloadProvider = null;
var useHardSelection = true;
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);
}
}
}
if (overloadProvider == null)
{
var completionService = CompletionService.GetService(document);
var completionTrigger = GetCompletionTrigger(triggerChar);
var data = await completionService.GetCompletionsAsync(
document,
position,
completionTrigger
).ConfigureAwait(false);
if (data != null && data.Items.Any())
{
useHardSelection = data.SuggestionModeItem == null;
var helper = CompletionHelper.GetHelper(document, completionService);
var text = await document.GetTextAsync().ConfigureAwait(false);
var textSpanToText = new Dictionary <TextSpan, string>();
completionData = data.Items
.Where(item => MatchesFilterText(helper, item, text, textSpanToText))
.Select(item => new RoslynCompletionData(document, item, triggerChar, _snippetService.SnippetManager))
.ToArray <ICompletionDataEx>();
}
else
{
completionData = Array.Empty <ICompletionDataEx>();
}
}
return(new CompletionResult(completionData, overloadProvider, useHardSelection));
}