jdk

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AccessModifiers.java 
121 строка · 4.2 Кб
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/*
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 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 8027530
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 * @summary test -public, -protected, -package, -private options
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 * @modules jdk.jdeps/com.sun.tools.javap
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 */
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import java.io.*;
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import java.util.*;
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import java.lang.StringBuilder;
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public class AccessModifiers {
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    public int errorCount;
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    protected String protectedField;
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    String packageField;
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    private String privateField;
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    public static void main(String[] args) throws Exception {
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        new AccessModifiers().run();
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    }
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    private void run() throws Exception {
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        List<String> pubMembers = new ArrayList<String>();
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        pubMembers.add("public int errorCount");
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        pubMembers.add("public AccessModifiers");
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        pubMembers.add("public static void main");
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        List<String> proMembers = new ArrayList<String>();
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        proMembers.add("protected java.lang.String protectedField");
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        proMembers.add("protected java.lang.String runJavap");
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        List<String> pkgMembers = new ArrayList<String>();
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        pkgMembers.add("java.lang.String packageField");
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        pkgMembers.add("boolean verify");
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        pkgMembers.add("void error");
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        List<String> priMembers = new ArrayList<String>();
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        priMembers.add("private java.lang.String privateField");
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        priMembers.add("private void run() throws java.lang.Exception");
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        priMembers.add("private void test");
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        List<String> expectedList = new ArrayList<String>();
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        expectedList.addAll(pubMembers);
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        test("-public", expectedList);
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        expectedList.addAll(proMembers);
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        test("-protected", expectedList);
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        expectedList.addAll(pkgMembers);
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        test("-package", expectedList);
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        expectedList.addAll(priMembers);
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        test("-private", expectedList);
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        if (errorCount > 0)
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            throw new Exception(errorCount + " errors received");
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    }
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    private void test(String option, List<String> expectedStrs) throws Exception {
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        String output = runJavap(0, option);
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        if (verify(output, expectedStrs))
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            System.out.println(option + " test passed");
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    }
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    protected String runJavap(int expect, String... options) {
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        // convert the varargs to a list in order to add class name
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        List<String> optlist = new ArrayList<String>();
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        optlist.addAll(Arrays.asList(options));
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        optlist.add("AccessModifiers");
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        String[] newoptions = optlist.toArray(new String[optlist.size()]);
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        StringWriter sw = new StringWriter();
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        PrintWriter pw = new PrintWriter(sw);
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        System.out.printf("\nRun javap " + optlist + "\n\n");
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        int rc = com.sun.tools.javap.Main.run(newoptions, pw);
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        pw.close();
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        System.out.println(sw);
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        if (rc != expect)
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           throw new Error("Expect to return " + expect + ", but return " + rc);
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        return sw.toString();
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    }
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    boolean verify(String output, List<String> expects) {
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        boolean pass = true;
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        for (String expect: expects) {
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            if (!output.contains(expect)) {
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                error(expect + " not found");
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                pass = false;
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            }
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        }
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        return pass;
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    }
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    void error(String msg) {
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        System.err.println(msg);
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        errorCount++;
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    }
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}
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