private bool ShouldTriggerCompletion(CompletionTrigger trigger, SnapshotPoint triggerLocation)
{
if (triggerLocation == triggerLocation.Snapshot.Length)
{
return(false);
}
try
{
var currentToken = _document.DocumentTokenizer.CurrentResult.GetToken(triggerLocation);
var currentTokenType = _document.DocumentTokenizer.GetTokenType(currentToken.Type);
if (currentTokenType == RadAsmTokenType.Comment)
{
return(false);
}
}
catch (ArgumentOutOfRangeException)
{
// outdated parser results so you cannot get valid tokens for the trigger location
return(false);
}
if (trigger.Reason == CompletionTriggerReason.Invoke ||
trigger.Reason == CompletionTriggerReason.InvokeAndCommitIfUnique)
{
return(true);
}
if (trigger.Reason == CompletionTriggerReason.Insertion && (trigger.Character == '\n' || trigger.Character == '\t') ||
trigger.Reason == CompletionTriggerReason.Deletion ||
trigger.Reason == CompletionTriggerReason.Backspace)
{
return(false);
}
var extend = triggerLocation.GetExtent();
if (extend.Span.Length < 3)
{
return(false);
}
return(true);
}
public CompletionStartData InitializeCompletion(CompletionTrigger trigger, SnapshotPoint triggerLocation, CancellationToken token) =>
ShouldTriggerCompletion(trigger, triggerLocation)
? new CompletionStartData(CompletionParticipation.ProvidesItems, triggerLocation.GetExtent().Span)
: CompletionStartData.DoesNotParticipateInCompletion;