Question

我正在编写一个自定义规则，用于检查正在分析的类是否正在扩展类型。例如：

班巴{ }

班级运输{ }

class PublicTransport extends Transport { }

类Bus应该扩展类Transport或子类的Transport。

public class EnsureSuperClassRule extends IssuableSubscriptionVisitor {

    final String SUPER_CLASS = "common.service.SuperService";

    @Override
    public List<Tree.Kind> nodesToVisit() {
    return ImmutableList.of(Tree.Kind.CLASS);
    }

    @Override
    public void visitNode(Tree tree) {

        ClassTree classTree = (ClassTree) tree;
        String className = classTree.simpleName().name();

        if (className.endsWith("Service")) {

            if(classTree.superClass() == null) {
                return false;
            }

            if (!SUPER_CLASS.equals(localClassTree.superClass().symbolType().fullyQualifiedName())) {
            reportIssue(tree, String.format("The class should extend SuperService or a class of type SuperService"));
            }
        }
      }
    }

}

我的问题是如何获得与超类的超类相关的信息？

Answer 1

您只需致电

即可

Class superClassOfSuperClass = this.class().getSuperClass();
superClassOfSuperClass.method().invoke(this);

我不确定上面的例子，因为遗传有一些错误或误解

Answer 2

您可以收集所有超级类，直到达到java.lang.Object为止：

@Override
public void visitNode(Tree pTree) {
    final ClassTree classTree = (ClassTree) pTree;

    final Set<String> superclasses = new HashSet<>();
    Type currentSuperclass = classTree.symbol().superClass();
    while (currentSuperclass != null) {
        superclasses.add(currentSuperclass.fullyQualifiedName());
        currentSuperclass = currentSuperclass.symbol().superClass();
    }
    
    // ... do something with superClasses

    super.visitNode(pTree);
}

@Override
public List<Kind> nodesToVisit() {
    return ImmutableList.of(Tree.Kind.CLASS);
}

（已通过sonar-java-plugin 6.3.0和sonar-plugin-api 8.2.0测试）

如何访问超级班级＆＃39;声纳自定义规则中的超类？

2 个答案: