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));
}
private async Task CreateSpellCheckCodeIssueAsync(CodeFixContext context, TSimpleName nameNode, string nameText, CancellationToken cancellationToken)
{
var document = context.Document;
var completionList = await CompletionService.GetCompletionListAsync(
document, nameNode.SpanStart, CompletionTriggerInfo.CreateInvokeCompletionTriggerInfo(), cancellationToken : cancellationToken).ConfigureAwait(false);
if (completionList == null)
{
return;
}
var completionRules = CompletionService.GetCompletionRules(document);
var onlyConsiderGenerics = IsGeneric(nameNode);
var results = new MultiDictionary <double, string>();
using (var similarityChecker = new WordSimilarityChecker(nameText, substringsAreSimilar: true))
{
foreach (var item in completionList.Items)
{
if (onlyConsiderGenerics && !IsGeneric(item))
{
continue;
}
var candidateText = item.FilterText;
double matchCost;
if (!similarityChecker.AreSimilar(candidateText, out matchCost))
{
continue;
}
var insertionText = completionRules.GetTextChange(item).NewText;
results.Add(matchCost, insertionText);
}
}
var matches = results.OrderBy(kvp => kvp.Key)
.SelectMany(kvp => kvp.Value.Order())
.Where(t => t != nameText)
.Take(3)
.Select(n => CreateCodeAction(nameNode, nameText, n, document));
context.RegisterFixes(matches, context.Diagnostics);
}