IndexRQL.java 文件源码

private static <T> T checkNode(ParseTree node, Class<T> clazz) {
    if (node instanceof ErrorNode) {
        throw new IndexRQLParseError(node.getText());
    } else if (node instanceof TerminalNode) {
        return null;
    } else if (clazz.isInstance(node)) {
        return (T) node;
    }
    return null;
}