AbstractPQLQuery.java 文件源码

java
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项目:PQL 作者:
protected Set<PQLTask> interpretIntersection(ParseTree tree) {
    Set<PQLTask> result = null;

    for (int i = 0; i < tree.getChildCount(); i++) {
        ParseTree child = tree.getChild(i);

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

               switch (ruleIndex) {
                case PQLParser.RULE_tasks:
                    if (result==null) result = this.interpretTasks(child);
                    else result.retainAll(this.interpretTasks(child));
                    break;
                case PQLParser.RULE_difference:
                    if (result==null) result = this.interpretDifference(child);
                    else result.retainAll(this.interpretDifference(child));
                    break;
               }
           }
       }

    return result;
}
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