1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /**
  27  * @test
  28  * @bug 8027823
  29  * @run junit test.java.lang.invoke.TestCatchException
  30  */
  31 package test.java.lang.invoke;
  32 
  33 import java.lang.invoke.*;
  34 import org.junit.*;
  35 import static org.junit.Assert.*;
  36 
  37 public class TestCatchException {
  38     final static MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
  39     final static MethodType M_TYPE = MethodType.methodType(int.class, Object.class, Object.class, int.class, int.class, int.class, int.class, int.class, int.class, int.class);
  40 
  41     private static int noThrow(Object o1, Object o2, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
  42         return 42;
  43     }
  44 
  45     private static int throwEx(Object o1, Object o2, int i1, int i2, int i3, int i4, int i5, int i6, int i7) throws Exception {
  46         throw new Exception();
  47     }
  48 
  49     private static int handler(Exception e) {
  50         return 17;
  51     }
  52 
  53     @Test
  54     public void testNoThrowPath() throws Throwable {
  55         MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "noThrow", M_TYPE);
  56         MethodHandle handler = LOOKUP.findStatic(TestCatchException.class, "handler", MethodType.methodType(int.class, Exception.class));
  57 
  58         MethodHandle h = MethodHandles.catchException(target, Exception.class, handler);
  59 
  60         int x = (int)h.invokeExact(new Object(), new Object(), 1, 2, 3, 4, 5, 6, 7);
  61         assertEquals(x, 42);
  62     }
  63 
  64     @Test
  65     public void testThrowPath() throws Throwable {
  66         MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "throwEx", M_TYPE);
  67         MethodHandle handler = LOOKUP.findStatic(TestCatchException.class, "handler", MethodType.methodType(int.class, Exception.class));
  68 
  69         MethodHandle h = MethodHandles.catchException(target, Exception.class, handler);
  70 
  71         int x = (int)h.invokeExact(new Object(), new Object(), 1, 2, 3, 4, 5, 6, 7);
  72         assertEquals(x, 17);
  73     }
  74 
  75     public static void main(String[] args) throws Throwable {
  76         TestCatchException test = new TestCatchException();
  77         test.testNoThrowPath();
  78         test.testThrowPath();
  79         System.out.println("TEST PASSED");
  80     }
  81 }