Java example source code file (Test6987555.java)

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class, debug, methodhandle, name, string, test6987555, throwable

The Test6987555.java Java example source code

/*
 * Copyright (c) 2010, 2011, 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 6987555
 * @summary JSR 292 unboxing to a boolean value fails on big-endian SPARC
 *
 * @run main/othervm -Xint -ea -XX:+UnlockDiagnosticVMOptions -XX:+VerifyMethodHandles Test6987555
 */

import java.lang.invoke.*;

public class Test6987555 {
    private static final Class   CLASS = Test6987555.class;
    private static final String  NAME  = "foo";
    private static final boolean DEBUG = false;

    public static void main(String[] args) throws Throwable {
        testboolean();
        testbyte();
        testchar();
        testshort();
        testint();
    }

    // boolean
    static void testboolean() throws Throwable {
        doboolean(false);
        doboolean(true);
    }
    static void doboolean(boolean x) throws Throwable {
        if (DEBUG)  System.out.println("boolean=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(boolean.class, boolean.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(boolean.class, Boolean.class));
        boolean a = (boolean) mh1.invokeExact(x);
        boolean b = (boolean) mh2.invokeExact(Boolean.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // byte
    static void testbyte() throws Throwable {
        byte[] a = new byte[] {
            Byte.MIN_VALUE,
            Byte.MIN_VALUE + 1,
            -0x0F,
            -1,
            0,
            1,
            0x0F,
            Byte.MAX_VALUE - 1,
            Byte.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            dobyte(a[i]);
        }
    }
    static void dobyte(byte x) throws Throwable {
        if (DEBUG)  System.out.println("byte=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(byte.class, byte.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(byte.class, Byte.class));
        byte a = (byte) mh1.invokeExact(x);
        byte b = (byte) mh2.invokeExact(Byte.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // char
    static void testchar() throws Throwable {
        char[] a = new char[] {
            Character.MIN_VALUE,
            Character.MIN_VALUE + 1,
            0x000F,
            0x00FF,
            0x0FFF,
            Character.MAX_VALUE - 1,
            Character.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            dochar(a[i]);
        }
    }
    static void dochar(char x) throws Throwable {
        if (DEBUG)  System.out.println("char=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(char.class, char.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(char.class, Character.class));
        char a = (char) mh1.invokeExact(x);
        char b = (char) mh2.invokeExact(Character.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // short
    static void testshort() throws Throwable {
        short[] a = new short[] {
            Short.MIN_VALUE,
            Short.MIN_VALUE + 1,
            -0x0FFF,
            -0x00FF,
            -0x000F,
            -1,
            0,
            1,
            0x000F,
            0x00FF,
            0x0FFF,
            Short.MAX_VALUE - 1,
            Short.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            doshort(a[i]);
        }
    }
    static void doshort(short x) throws Throwable {
        if (DEBUG)  System.out.println("short=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(short.class, short.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(short.class, Short.class));
        short a = (short) mh1.invokeExact(x);
        short b = (short) mh2.invokeExact(Short.valueOf(x));
        assert a == b : a + " != " + b;
    }

    // int
    static void testint() throws Throwable {
        int[] a = new int[] {
            Integer.MIN_VALUE,
            Integer.MIN_VALUE + 1,
            -0x00000FFF,
            -0x000000FF,
            -0x0000000F,
            -1,
            0,
            1,
            0x0000000F,
            0x000000FF,
            0x00000FFF,
            Integer.MAX_VALUE - 1,
            Integer.MAX_VALUE
        };
        for (int i = 0; i < a.length; i++) {
            doint(a[i]);
        }
    }
    static void doint(int x) throws Throwable {
        if (DEBUG)  System.out.println("int=" + x);
        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(int.class, int.class));
        MethodHandle mh2 = mh1.asType(MethodType.methodType(int.class, Integer.class));
        int a = (int) mh1.invokeExact(x);
        int b = (int) mh2.invokeExact(Integer.valueOf(x));
        assert a == b : a + " != " + b;
    }

    public static boolean foo(boolean i) { return i; }
    public static byte    foo(byte    i) { return i; }
    public static char    foo(char    i) { return i; }
    public static short   foo(short   i) { return i; }
    public static int     foo(int     i) { return i; }
}