private CallArgs ParseCallArgs()
{
var t = NextToken();
AssertDelimiter(Delimiter.ParenthesisOpen, t);
var node = new CallArgs();
t = NextToken(false);
if (t.IsDelimiter(Delimiter.ParenthesisClose))
{
_stream.Next();
return(node);
}
do
{
var expr = ParseExpression();
node.AddChild(expr);
} while (NextToken().IsDelimiter(Delimiter.Comma));
_stream.Previous(); // Not comma encountered
t = NextToken();
AssertDelimiter(Delimiter.ParenthesisClose, t);
return(node);
}