/*

 * Copyright (c) 2019, Red Hat, Inc

 * 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 fib;

public class FibJNI {

    static {

        // Native lib used for debug symbols stripping

        System.loadLibrary("Fib");

    }

    private final int num;

    private final long expected;

    public FibJNI(int num, long expected) {

        this.num = num;

        this.expected = expected;

    }

    public void callNative() {

        callJNI(this, num);

    }

    // Called from JNI library libFib

    private void callback(long val) {

        System.out.println("Debug: result was: " + val);

        if (val != expected) {

            throw new RuntimeException("Expected " + expected + " but got: " +val);

        }

    }

    public static native void callJNI(Object target, int num);

    public static void main(String[] args) {

        if (args.length != 2) {

            System.err.println("Usage: " + FibJNI.class.getName() + " <input> <expectedResult>");

        }

        int input = Integer.parseInt(args[0]);

        long expected = Long.parseLong(args[1]);

        FibJNI fib = new FibJNI(input, expected);

        fib.callNative();

        System.out.println("DEBUG: Sanity check for " + FibJNI.class.getSimpleName() + " passed.");

    }

}