/*

 * Copyright (c) 2015, 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 8051045

 * @summary Test that exceptions from invokedynamic are wrapped in BootstrapMethodError

 * @modules java.base/jdk.internal.org.objectweb.asm

 * @run main BootstrapMethodErrorTest

 */

import java.lang.reflect.Method;

import java.lang.invoke.MethodHandle;

import java.lang.invoke.MethodHandles;

import static java.lang.invoke.MethodHandles.*;

import static java.lang.invoke.MethodType.*;

import jdk.internal.org.objectweb.asm.ClassWriter;

import jdk.internal.org.objectweb.asm.Handle;

import jdk.internal.org.objectweb.asm.MethodVisitor;

import jdk.internal.org.objectweb.asm.Opcodes;

public class BootstrapMethodErrorTest extends ClassLoader implements Opcodes {

  @Override

  public Class findClass(String name) throws ClassNotFoundException {

    byte[] b;

    try {

      b = loadClassData(name);

    } catch (Throwable th) {

      throw new ClassNotFoundException("Loading error", th);

    }

    return defineClass(name, b, 0, b.length);

  }

  private byte[] loadClassData(String name) throws Exception {

    ClassWriter cw = new ClassWriter(0);

    MethodVisitor mv;

    if (name.equals("C")) {

      cw.visit(52, ACC_SUPER | ACC_PUBLIC, "C", null, "java/lang/Object", null);

      {

        mv = cw.visitMethod(ACC_PRIVATE | ACC_STATIC, "m", "()V", null, null);

        mv.visitCode();

        mv.visitInsn(RETURN);

        mv.visitMaxs(0, 1);

        mv.visitEnd();

      }

      cw.visitEnd();

      return cw.toByteArray();

    } else if (name.equals("Exec")) {

      cw.visit(52, ACC_SUPER | ACC_PUBLIC, "Exec", null, "java/lang/Object", null);

      {

        mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "invokeRef", "()V", null, null);

        mv.visitCode();

        Handle h = new Handle(H_INVOKESTATIC, "C", "m", "()V");

        mv.visitInvokeDynamicInsn("C", "()V", h);

        mv.visitInsn(RETURN);

        mv.visitMaxs(0, 0);

        mv.visitEnd();

      }

      cw.visitEnd();

      return cw.toByteArray();

    }

    return null;

  }

  public static void main(String[] args) throws ClassNotFoundException, IllegalAccessException, NoSuchMethodException {

    new BootstrapMethodErrorTest().test();

  }

  public void test() throws ClassNotFoundException, IllegalAccessException, NoSuchMethodException {

    Class.forName("C", true, this);

    Class<?> exec = Class.forName("Exec", true, this);

    try {

      exec.getMethod("invokeRef").invoke(null);

    } catch (Throwable e) {

      Throwable c = e.getCause();

      if (c == null) {

        throw new RuntimeException(

            "Expected BootstrapMethodError wrapped in an InvocationTargetException but it wasn't wrapped", e);

      } else if (c instanceof BootstrapMethodError) {

        // Only way to pass test, all else should throw

        return;

      } else {

        throw new RuntimeException(

            "Expected BootstrapMethodError but got another Error: "

            + c.getClass().getName(),

            c);

      }

    }

    throw new RuntimeException("Expected BootstrapMethodError but no Error at all was thrown");

  }

}