static void Analyze([NotNull] IAnonymousMethodExpression anonymousMethodExpression, [NotNull] IHighlightingConsumer consumer)
{
if (!anonymousMethodExpression.IsAsync || !anonymousMethodExpression.ReturnType.IsVoid())
{
return; // not an "async delegate (...) { ... }" that returns void
}
if (anonymousMethodExpression.Parent is IAssignmentExpression assignmentExpression &&
assignmentExpression.IsEventSubscriptionOrUnSubscription())
{
return; // direct event target
}
Debug.Assert(anonymousMethodExpression.AsyncKeyword != null);
consumer.AddHighlighting(
new AsyncVoidFunctionExpressionHighlighting(
"'async void' anonymous method expression not used as a direct event handler.",
anonymousMethodExpression.AsyncKeyword,
() => anonymousMethodExpression.SetAsync(false)));
}
