RefactorUtils.java 文件源码

public static TerminalNode getRuleDefNameNode(Parser parser, ParseTree tree, String ruleName) {
    Collection<ParseTree> ruleDefRuleNodes;
    if ( Grammar.isTokenName(ruleName) ) {
        ruleDefRuleNodes = XPath.findAll(tree, "//lexerRule/TOKEN_REF", parser);
    }
    else {
        ruleDefRuleNodes = XPath.findAll(tree, "//parserRuleSpec/RULE_REF", parser);
    }
    for (ParseTree node : ruleDefRuleNodes) {
        String r = node.getText(); // always a TerminalNode; just get rule name of this def
        if ( r.equals(ruleName) ) {
            return (TerminalNode)node;
        }
    }
    return null;
}