public SpanMeta GetMeta(TextSpan span)
{
var node = SyntaxRoot.FindNode(span)?.GetExpression();
if (node != null)
{
var symbol = SemanticModel.GetSymbolInfo(node).Symbol ??
SemanticModel.GetDeclaredSymbol(node) ??
SemanticModel.GetTypeInfo(node).Type;
return(new SpanMeta(node, symbol));
}
var child = SyntaxRoot.ChildThatContainsPosition(span.Start);
return(new SpanMeta(child.AsToken()));
}