AbstractPQLQuery.java 文件源码

protected boolean interpretParentheses(ParseTree tree) {
    ParseTree child = tree.getChild(1); 
    int ruleIndex = ((RuleNode)child).getRuleContext().getRuleIndex();

    switch (ruleIndex) {
        case PQLParser.RULE_proposition:
            return interpretProposition(child);
        case PQLParser.RULE_conjunction:
            return interpretConjunction(child);
        case PQLParser.RULE_disjunction:
            return interpretDisjunction(child);
        case PQLParser.RULE_logicalTest:
            return interpretLogicalTest(child);
    }

    return false;
}