AbstractPQLQuery.java 文件源码

protected void interpretLocation(ParseTree tree) {  
    ParseTree child = tree.getChild(0); 

    if (child instanceof RuleNode) {
           int ruleIndex = ((RuleNode)child).getRuleContext().getRuleIndex();

           switch (ruleIndex) {
            case PQLParser.RULE_universe :
                this.locations.add(new PQLLocation());
                break;
            case PQLParser.RULE_locationPath :
                this.locations.add(new PQLLocation(this.interpretString(child)));
                break;
           }
       }
}