/*

 * Copyright (c) 2005, 2016, 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.

 */

/*

 * @test

 * @bug 6175634

 * @summary Allow early return from methods

 *

 * @bug 6431720

 * @summary Unexpected InvalidTypeException when call ThreadReference.forceEarlyReturn with VoidValue

 *

 * @bug 6432855

 * @summary Need a way to create JDI VoidValue for use in ThreadReference.forceEarlyReturn

 *

 * @author Tim Bell (based on MethodExitReturnValuesTest by Jim Holmlund)

 *

 * @run build TestScaffold VMConnection TargetListener TargetAdapter

 * @run compile -g EarlyReturnTest.java

 * @run driver EarlyReturnTest

 */

import com.sun.jdi.*;

import com.sun.jdi.event.*;

import com.sun.jdi.request.*;

import java.util.*;

import java.net.URLClassLoader;

import java.net.URL;

import java.lang.reflect.Array;

/*

 * This test has a debuggee which calls a static method

 * for each kind of JDI Value, and then an instance method

 * for each.

 *

 * The debugger sets breakpoints in all methods.  When a breakpoint

 * is hit the debugger requests an early return and supplies a new

 * return value.  It then checks that the correct return values are

 * included in the MethodExitEvents.

 *

 * Each value is stored in a static var in the debuggee.  The debugger

 * gets the values from these static vars to check for correct

 * return values in the MethodExitEvents.

 */

class EarlyReturnTarg {

    static boolean debuggerWatching = false;

    static int failureCount = 0;

    /*

     * These are the values that will be used by methods

     * returning normally.

     */

    static URL[] urls = new URL[1];

    public static byte      byteValue = 89;

    public static char      charValue = 'x';

    public static double    doubleValue = 2.2;

    public static float     floatValue = 3.3f;

    public static int       intValue = 1;

    public static long      longValue = Long.MAX_VALUE;

    public static short     shortValue = 8;

    public static boolean   booleanValue = false;

    public static Class       classValue = Object.class;

    public static ClassLoader classLoaderValue;

    {

        try {

            urls[0] = new URL("hi there");

        } catch (java.net.MalformedURLException ee) {

        }

        classLoaderValue = new URLClassLoader(urls);

    }

    public static Thread      threadValue = Thread.currentThread();

    public static ThreadGroup threadGroupValue = threadValue.getThreadGroup();

    public static String      stringValue = "abc";

    public static int[]       intArrayValue = new int[] {1, 2, 3};

    public static EarlyReturnTarg  objectValue =

        new EarlyReturnTarg();

    public String ivar = stringValue;

    /*

     * These are the values that will be used by methods

     * returning early.  These are != the normal values

     * defined above.

     */

    static URL[] eurls = new URL[1];

    public static byte      ebyteValue = 42;

    public static char      echarValue = 'a';

    public static double    edoubleValue = 6.6;

    public static float     efloatValue = 9.9f;

    public static int       eintValue = 7;

    public static long      elongValue = Long.MIN_VALUE;

    public static short     eshortValue = 3;

    public static boolean   ebooleanValue = true;

    public static Class eclassValue = String.class;

    public static ClassLoader eclassLoaderValue;

    {

        try {

            urls[0] = new URL("been there, done that");

        } catch (java.net.MalformedURLException ee) {

        }

        classLoaderValue = new URLClassLoader(urls);

    }

    public static Thread ethreadValue;

    public static ThreadGroup ethreadGroupValue;

    public static String estringValue = "wxyz";

    public static int[]       eintArrayValue = new int[] {10, 11, 12};

    public static java.util.Date eobjectValue = new java.util.Date();

    // Used to check the return values seen on the debugee side

    public static boolean chk(byte v) {

        return v == (debuggerWatching ? ebyteValue: byteValue);

    }

    public static boolean chk(char v) {

        return v == (debuggerWatching ? echarValue: charValue);

    }

    public static boolean chk(double v) {

        return v == (debuggerWatching ? edoubleValue: doubleValue);

    }

    public static boolean chk(float v) {

        return v == (debuggerWatching ? efloatValue: floatValue);

    }

    public static boolean chk(int v) {

        return v == (debuggerWatching ? eintValue: intValue);

    }

    public static boolean chk(long v) {

        return v == (debuggerWatching ? elongValue: longValue);

    }

    public static boolean chk(short v) {

        return v == (debuggerWatching ? eshortValue: shortValue);

    }

    public static boolean chk(boolean v) {

        return v == (debuggerWatching ? ebooleanValue: booleanValue);

    }

    public static boolean chk(String v) {

        return v.equals(debuggerWatching ? estringValue: stringValue);

    }

    public static boolean chk(Object v) {

        return v.equals(debuggerWatching ? eobjectValue: objectValue);

    }

    // Used to show which set of tests follows

    public static String s_show(String p1) { return p1;}

    // These are the static methods

    public static byte s_bytef(int p1){ return byteValue; }

    public static char s_charf()      { return charValue; }

    public static double s_doublef()  { return doubleValue; }

    public static float s_floatf()    { return floatValue; }

    public static int s_intf()        { return intValue; }

    public static long s_longf()      { return longValue; }

    public static short s_shortf()    { return shortValue; }

    public static boolean s_booleanf(){ return booleanValue; }

    public static String s_stringf()  { return stringValue; }

    public static Class s_classf()    { return classValue; }

    public static ClassLoader s_classLoaderf()

                                      { return classLoaderValue; }

    public static Thread s_threadf()  { return threadValue; }

    public static ThreadGroup s_threadGroupf()

                                      { return threadGroupValue; }

    public static int[] s_intArrayf() { return intArrayValue; }

    public static Object s_nullObjectf() { return null; }

    public static Object s_objectf()  { return objectValue; }

    public static void s_voidf()      { System.err.println("debugee in s_voidf");}

    // These are the instance methods

    public byte i_bytef(int p1)      { return byteValue; }

    public char i_charf()            { return charValue; }

    public double i_doublef()        { return doubleValue; }

    public float i_floatf()          { return floatValue; }

    public int i_intf()              { return intValue; }

    public long i_longf()            { return longValue; }

    public short i_shortf()          { return shortValue; }

    public boolean i_booleanf()      { return booleanValue; }

    public String i_stringf()        { return stringValue; }

    public Class i_classf()          { return classValue; }

    public ClassLoader i_classLoaderf()

                                     { return classLoaderValue; }

    public Thread i_threadf()        { return threadValue; }

    public ThreadGroup i_threadGroupf()

                                     { return threadGroupValue; }

    public int[] i_intArrayf()       { return intArrayValue; }

    public Object i_nullObjectf()    { return null; }

    public Object i_objectf()        { return objectValue; }

    public void i_voidf()            {}

    static void doit(EarlyReturnTarg xx) throws Exception {

        System.err.print("debugee in doit ");

        if (debuggerWatching) {

            System.err.println("with a debugger watching.  Early returns expected.");

        } else {

            System.err.println("with no debugger watching.  Normal returns.");

        }

        s_show("==========  Testing static methods ================");

        if (!chk( s_bytef(88))) failureCount++;

        if (!chk( s_charf())) failureCount++;

        if (!chk( s_doublef())) failureCount++;

        if (!chk( s_floatf())) failureCount++;

        if (!chk( s_intf())) failureCount++;

        if (!chk( s_longf())) failureCount++;

        if (!chk( s_shortf())) failureCount++;

        if (!chk( s_booleanf())) failureCount++;

        if (!chk( s_stringf())) failureCount++;

        s_classf();

        s_classLoaderf();

        s_threadf();

        s_threadGroupf();

        s_intArrayf();

        s_nullObjectf();

        if (!chk( s_objectf())) failureCount++;

        s_voidf();

        s_show("==========  Testing instance methods ================");

        if (!chk( xx.i_bytef(89))) failureCount++;

        if (!chk( xx.i_charf())) failureCount++;

        if (!chk( xx.i_doublef())) failureCount++;

        if (!chk( xx.i_floatf())) failureCount++;

        if (!chk( xx.i_intf())) failureCount++;

        if (!chk( xx.i_longf())) failureCount++;

        if (!chk( xx.i_shortf())) failureCount++;

        if (!chk( xx.i_booleanf())) failureCount++;

        if (!chk( xx.i_stringf())) failureCount++;

        xx.i_intArrayf();

        xx.i_classf();

        xx.i_classLoaderf();

        xx.i_threadf();

        xx.i_threadGroupf();

        xx.i_nullObjectf();

        if (!chk( xx.i_objectf())) failureCount++;

        xx.i_voidf();

    }

    /** Hang so that test fails */

    static void hang() {

        try {

            // ten minute nap

            Thread.currentThread().sleep(10 * 60 * 1000);

        } catch (InterruptedException exc) {

            // shouldn't happen

        }

    }

    public static void main(String[] args) throws Exception {

        // The debugger will stop at the start of main,

        // set breakpoints and then do a resume.

        System.err.println("debugee in main");

        EarlyReturnTarg xx =

            new EarlyReturnTarg();

        doit(xx);

        if (debuggerWatching && failureCount > 0) {

            hang();

            throw new Exception("EarlyReturnTarg: failed");

        }

    }

}

public class EarlyReturnTest extends TestScaffold {

    /*

     * Class patterns for which we don't want events (copied

     * from the "Trace.java" example):

     *     http://java.sun.com/javase/technologies/core/toolsapis/jpda/

     */

    private String[] excludes = {

        "javax.*",

        "sun.*",

        "com.sun.*",

        "com.oracle.*",

        "oracle.*"};

    static VirtualMachineManager vmm ;

    ClassType targetClass;

    Field theValueField;

    static int earlyReturns = 0;

    static final int expectedEarlyReturns = 34; // determined by inspection :-)

    EarlyReturnTest(String args[]) {

        super(args);

    }

    public static void main(String[] args)      throws Exception {

        EarlyReturnTest meee = new EarlyReturnTest(args);

        vmm = Bootstrap.virtualMachineManager();

        meee.startTests();

    }

    // chkXXX methods lifted directly from MethodExitReturnValuesTest

    // These methods check for correct return values.  Thanks, Jim!

    void ckByteValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("ebyteValue");

        ByteValue theValue = (ByteValue)targetClass.getValue(theValueField);

        byte vv = theValue.value();

        byte rv = ((ByteValue)retValue).value();

        if (vv != rv) {

            failure("failure: byte: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: byte " + rv);

            earlyReturns++;

        }

    }

    void ckCharValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("echarValue");

        CharValue theValue = (CharValue)targetClass.getValue(theValueField);

        char vv = theValue.value();

        char rv = ((CharValue)retValue).value();

        if (vv != rv) {

            failure("failure: char: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: char " + rv);

            earlyReturns++;

        }

    }

    void ckDoubleValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("edoubleValue");

        DoubleValue theValue = (DoubleValue)targetClass.getValue(theValueField);

        double vv = theValue.value();

        double rv = ((DoubleValue)retValue).value();

        if (vv != rv) {

            failure("failure: double: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: double " + rv);

            earlyReturns++;

        }

    }

    void ckFloatValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("efloatValue");

        FloatValue theValue = (FloatValue)targetClass.getValue(theValueField);

        float vv = theValue.value();

        float rv = ((FloatValue)retValue).value();

        if (vv != rv) {

            failure("failure: float: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: float " + rv);

            earlyReturns++;

        }

    }

    void ckIntValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("eintValue");

        IntegerValue theValue = (IntegerValue)targetClass.getValue(theValueField);

        int vv = theValue.value();

        int rv = ((IntegerValue)retValue).value();

        if (vv != rv) {

            failure("failure: int: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: int " + rv);

            earlyReturns++;

        }

    }

    void ckLongValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("elongValue");

        LongValue theValue = (LongValue)targetClass.getValue(theValueField);

        long vv = theValue.value();

        long rv = ((LongValue)retValue).value();

        if (vv != rv) {

            failure("failure: long: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: long " + rv);

            earlyReturns++;

        }

    }

    void ckShortValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("eshortValue");

        ShortValue theValue = (ShortValue)targetClass.getValue(theValueField);

        short vv = theValue.value();

        short rv = ((ShortValue)retValue).value();

        if (vv != rv) {

            failure("failure: short: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: short " + rv);

            earlyReturns++;

        }

    }

    void ckBooleanValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("ebooleanValue");

        BooleanValue theValue = (BooleanValue)targetClass.getValue(theValueField);

        boolean vv = theValue.value();

        boolean rv = ((BooleanValue)retValue).value();

        if (vv != rv) {

            failure("failure: boolean: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: boolean " + rv);

            earlyReturns++;

        }

    }

    void ckStringValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("estringValue");

        StringReference theValue = (StringReference)targetClass.getValue(theValueField);

        String vv = theValue.value();

        String rv = ((StringReference)retValue).value();

        if (vv != rv) {

            failure("failure: String: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: String: " + rv);

            earlyReturns++;

        }

    }

    void ckClassValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("eclassValue");

        ClassObjectReference vv = (ClassObjectReference)targetClass.

            getValue(theValueField);

        ClassObjectReference rv = (ClassObjectReference)retValue;

        if (vv != rv) {

            failure("failure: Class: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: Class: " + rv);

            earlyReturns++;

        }

    }

    void ckClassLoaderValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("eclassLoaderValue");

        ClassLoaderReference vv = (ClassLoaderReference)targetClass.

            getValue(theValueField);

        ClassLoaderReference rv = (ClassLoaderReference)retValue;

        if (vv != rv) {

            failure("failure: ClassLoader: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: ClassLoader: " + rv);

            earlyReturns++;

        }

    }

    void ckThreadValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("ethreadValue");

        ThreadReference vv = (ThreadReference)targetClass.

            getValue(theValueField);

        ThreadReference rv = (ThreadReference)retValue;

        if (vv != rv) {

            failure("failure: Thread: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: Thread: " + rv);

            earlyReturns++;

        }

    }

    void ckThreadGroupValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("ethreadGroupValue");

        ThreadGroupReference vv = (ThreadGroupReference)targetClass.

            getValue(theValueField);

        ThreadGroupReference rv = (ThreadGroupReference)retValue;

        if (vv != rv) {

            failure("failure: ThreadgGroup: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: ThreadGroup: " + rv);

            earlyReturns++;

        }

    }

    void ckArrayValue(Value retValue) {

        Field theValueField = targetClass.fieldByName("eintArrayValue");

        ArrayReference theValue = (ArrayReference)targetClass.getValue(theValueField);

        IntegerValue theElem2 = (IntegerValue)theValue.getValue(2);

        ArrayReference theRetValue = (ArrayReference)retValue;

        IntegerValue retElem2 = (IntegerValue)theRetValue.getValue(2);

        int vv = theElem2.value();

        int rv = retElem2.value();

        if (vv != rv) {

            failure("failure: in[2]: expected " + vv + ", got " + rv);

        } else {

            System.out.println("Passed: int[2]: " + rv);

            earlyReturns++;

        }

    }

    void ckNullObjectValue(Value retValue) {

        if (retValue != null) {

            failure("failure: NullObject: expected " + null + ", got " + retValue);

        } else {

            System.out.println("Passed: NullObject: " + retValue);

            earlyReturns++;

        }

    }

    void ckObjectValue(Value retValue) {

        ObjectReference theRetValue = (ObjectReference)retValue;