/*

 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package nsk.jvmti.RedefineClasses;

import java.io.*;

/**

 * This test checks that preexisting instance fields of a redefined

 * class will retain their previous values at the completion of

 * the redefinition and any new fields will have their default values.

 */

public class redefclass004 {

    static final int PASSED = 0;

    static final int FAILED = 2;

    static final int NO_RESULTS = 3;

    static final int JCK_STATUS_BASE = 95;

    static boolean DEBUG_MODE = false;

    static String fileDir = ".";

    private PrintStream out;

    static {

        try {

            System.loadLibrary("redefclass004");

        } catch (UnsatisfiedLinkError e) {

            System.err.println("Could not load redefclass004 library");

            System.err.println("java.library.path:" +

                System.getProperty("java.library.path"));

            throw e;

        }

    }

    native static int makeRedefinition(int vrb, Class redefCls,

        byte[] classBytes);

    native static int checkNewFields(int vrb, redefclass004r redefClsObj);

    public static void main(String[] argv) {

        argv = nsk.share.jvmti.JVMTITest.commonInit(argv);

        System.exit(run(argv, System.out) + JCK_STATUS_BASE);

    }

    public static int run(String argv[], PrintStream out) {

        return new redefclass004().runIt(argv, out);

    }

    private int runIt(String argv[], PrintStream out) {

        File newRedefClassFile = null;

        byte[] redefClassBytes;

        int retValue = 0;

        boolean totalRes = true;

        this.out = out;

        for (int i = 0; i < argv.length; i++) {

            String token = argv[i];

            if (token.equals("-v")) // verbose mode

                DEBUG_MODE = true;

            else

                fileDir = token;

        }

        redefclass004r redefClsObj = new redefclass004r();

        if ((retValue=redefClsObj.checkIt(out, DEBUG_MODE)) == 19) {

            if (DEBUG_MODE) {

                out.println("Successfully check the OLD version of redefclass004r");

                out.println("Default values of instance field of the redefined class:");

                out.println("\tbyteFld = " + redefClsObj.byteFld);

                out.println("\tshortFld = " + redefClsObj.shortFld);

                out.println("\tintFld = " + redefClsObj.intFld);

                out.println("\tlongFld = " + redefClsObj.longFld);

                out.println("\tfloatFld = " + redefClsObj.floatFld);

                out.println("\tdoubleFld = " + redefClsObj.doubleFld);

                out.println("\tcharFld = '" + redefClsObj.charFld + "'");

                out.println("\tbooleanFld = " + redefClsObj.booleanFld);

                out.println("\tstringFld = \"" + redefClsObj.stringFld + "\"\n");

            }

        } else {

            out.println("TEST: failed to check the OLD version of redefclass004r");

            out.println("      check CLASSPATH to the file oldclass/redefclass004r.class");

            out.println("      java.class.path: " +

                System.getProperty("java.class.path"));

            return FAILED;

        }

// change the values of instance (nonstatic) fields of a redefined class

        redefClsObj.byteFld = 1;

        redefClsObj.shortFld = 2;

        redefClsObj.intFld = 3;

        redefClsObj.longFld = 4L;

        redefClsObj.floatFld = 5.1F;

        redefClsObj.doubleFld = 6.0D;

        redefClsObj.charFld = 'a';

        redefClsObj.booleanFld = false;

        redefClsObj.stringFld = "redefclass004r";

// try to redefine class redefclass004r

        String fileName = fileDir + File.separator + "newclass" + File.separator +

            redefclass004r.class.getName().replace('.', File.separatorChar) +

            ".class";

        if (DEBUG_MODE)

            out.println("Trying to redefine class from the file: " + fileName);

        try {

            FileInputStream in = new FileInputStream(fileName);

            redefClassBytes = new byte[in.available()];

            in.read(redefClassBytes);

            in.close();

        } catch (Exception ex) {

            out.println("# Unexpected exception while reading class file:");

            out.println("# " + ex);

            return FAILED;

        }

// make real redefinition

        if (DEBUG_MODE)

            retValue=makeRedefinition(1, redefClsObj.getClass(),

                redefClassBytes);

        else

            retValue=makeRedefinition(0, redefClsObj.getClass(),

                redefClassBytes);

        switch (retValue) {

            case FAILED:

                out.println("TEST: failed to redefine class");

                return FAILED;

            case NO_RESULTS:

                return PASSED;

            case PASSED:

                break;

        }

        if ((retValue=redefClsObj.checkIt(out, DEBUG_MODE)) == 73) {

            if (DEBUG_MODE)

                out.println("Successfully check the NEW version of redefclass004r\n");

/* Check that preexisting instance (nonstatic) fields of the redefined class

   retain their previous values after the redefinition */

            if (redefClsObj.byteFld == 1 && redefClsObj.shortFld == 2 &&

                redefClsObj.intFld == 3 && redefClsObj.longFld == 4L &&

                redefClsObj.floatFld == 5.1F && redefClsObj.doubleFld == 6.0D &&

                redefClsObj.charFld == 'a' && redefClsObj.booleanFld == false &&

                redefClsObj.stringFld.equals("redefclass004r")) {

                if (DEBUG_MODE)

                    out.println("Check #1 PASSED: Preexisting instance fields " +

                        "of the redefined class retain their previous values\n");

            } else {

                out.println("TEST FAILED: Preexisting instance fields of the " +

                    "redefined class do not retain their previous values");

                out.println("Current values of instance field of the redefined class:");

                out.println("\tbyteFld = " + redefClsObj.byteFld +

                    ",\texpected 1");

                out.println("\tshortFld = " + redefClsObj.shortFld +

                    ",\texpected 2");

                out.println("\tintFld = " + redefClsObj.intFld +

                    ",\texpected 3");

                out.println("\tlongFld = " + redefClsObj.longFld +

                    ",\texpected 4");

                out.println("\tfloatFld = " + redefClsObj.floatFld +

                    ",\texpected 5.1");

                out.println("\tdoubleFld = " + redefClsObj.doubleFld +

                    ",\texpected 6.0");

                out.println("\tcharFld = '" + redefClsObj.charFld +

                    "',\texpected 'a'");

                out.println("\tbooleanFld = " + redefClsObj.booleanFld +

                    ",\texpected false");

                out.println("\tstringFld = \"" + redefClsObj.stringFld +

                    "\",\texpected \"redefclass004r\"\n");

                totalRes = false;

            }

/* Check that all new instance (nonstatic) fields of the redefined class

   will have their default values after redefinition */

            if (DEBUG_MODE)

                retValue=checkNewFields(1, redefClsObj);

            else

                retValue=checkNewFields(0, redefClsObj);

            if (retValue == PASSED) {

                if (DEBUG_MODE)

                    out.println("Check #2 PASSED: All new instance " +

                        "fields of the redefined class\n" +

                        "\thave their default values\n");

            } else {

                out.println("TEST FAILED: New instance fields " +

                    "of the redefined class were not assigned " +

                    "their default value\n");

                totalRes = false;

            }

        } else {

            if (retValue == 19)

                out.println("TEST FAILED: the method redefclass004r.checkIt() is still old");

            else

                out.println("TEST: failed to call method redefclass004r.checkIt()");

            return FAILED;

        }

        if (totalRes) return PASSED;

        else return FAILED;

    }

}