ParseTreeUtil.java 文件源码

/**
 * Returns the starting token of the construct represented by node.
 *
 * @param node A node
 * @return Start token
 */
public static Token getStartTokenForNode(ParseTree node) {
    if (node instanceof TerminalNodeImpl) {
        return ((TerminalNodeImpl) node).getSymbol();
    } else {
        return ((ParserRuleContext) node).getStart();
    }
}