public static SignatureHelpSession TryCreate(SnapshotPoint triggerPosition, SignatureHelpTriggerInfo triggerInfo, Lazy <ISignatureHelpBroker> signatureHelpBroker, ITextView textView)
{
var info = SignatureHelpInfo.Create(triggerPosition.Snapshot);
if (info == null)
{
return(null);
}
if (triggerInfo.TriggerReason == SignatureHelpTriggerReason.TypeCharCommand)
{
Debug.Assert(triggerInfo.TriggerCharacter != null);
if (triggerInfo.TriggerCharacter != null && !info.Value.SignatureHelpService.IsTriggerCharacter(triggerInfo.TriggerCharacter.Value))
{
return(null);
}
}
else if (triggerInfo.TriggerReason == SignatureHelpTriggerReason.RetriggerCommand)
{
if (triggerInfo.TriggerCharacter != null && !info.Value.SignatureHelpService.IsRetriggerCharacter(triggerInfo.TriggerCharacter.Value))
{
return(null);
}
}
return(new SignatureHelpSession(info.Value.SignatureHelpService, signatureHelpBroker, textView));
}
bool RestartCore(SnapshotPoint triggerPosition, SignatureHelpTriggerInfo triggerInfo)
{
var info = SignatureHelpInfo.Create(triggerPosition.Snapshot);
if (info == null)
{
return(false);
}
Start(info.Value, triggerPosition, triggerInfo);
return(true);
}