com.alibaba.p3c.pmd.lang.java.rule.util.NodeUtils Maven / Gradle / Ivy

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Alibaba Java Coding Guidelines PMD implementations

There is a newer version: 2.1.1

/*
 * Copyright 1999-2017 Alibaba Group.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.p3c.pmd.lang.java.rule.util;

import net.sourceforge.pmd.lang.ast.Node;
import net.sourceforge.pmd.lang.java.ast.ASTFieldDeclaration;
import net.sourceforge.pmd.lang.java.ast.ASTPrimaryExpression;
import net.sourceforge.pmd.lang.java.typeresolution.TypeHelper;

/**
 * @author caikang
 * @date 2016/11/16
 */
public class NodeUtils {
    public static boolean isParentOrSelf(Node descendant, Node ancestor) {
        if (descendant == ancestor) {
            return true;
        }
        if (descendant == null || ancestor == null) {
            return false;
        }
        Node parent = descendant.jjtGetParent();
        while (parent != ancestor && parent != null) {
            parent = parent.jjtGetParent();
        }
        return parent == ancestor;
    }

    /**
     * TODO optimize
     *
     * @param expression expression
     * @return true if wrapper type
     */
    public static boolean isWrapperType(ASTPrimaryExpression expression) {
        return TypeHelper.isA(expression, Integer.class)
            || TypeHelper.isA(expression, Long.class)
            || TypeHelper.isA(expression, Boolean.class)
            || TypeHelper.isA(expression, Byte.class)
            || TypeHelper.isA(expression, Double.class)
            || TypeHelper.isA(expression, Short.class)
            || TypeHelper.isA(expression, Float.class)
            || TypeHelper.isA(expression, Character.class);
    }

    public static boolean isConstant(ASTFieldDeclaration field) {
        return field != null && field.isStatic() && field.isFinal();
    }
}