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/*
* Copyright (c) 2013, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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 8027823
* @run junit test.java.lang.invoke.TestCatchException
*/
package test.java.lang.invoke;
import java.lang.invoke.*;
import org.junit.*;
import static org.junit.Assert.*;
public class TestCatchException {
static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
static final 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);
private static int noThrow(Object o1, Object o2, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
return 42;
}
private static int throwEx(Object o1, Object o2, int i1, int i2, int i3, int i4, int i5, int i6, int i7) throws Exception {
throw new Exception();
}
private static int handler(Exception e) {
return 17;
}
@Test
public void testNoThrowPath() throws Throwable {
MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "noThrow", M_TYPE);
MethodHandle handler = LOOKUP.findStatic(TestCatchException.class, "handler", MethodType.methodType(int.class, Exception.class));
MethodHandle h = MethodHandles.catchException(target, Exception.class, handler);
int x = (int)h.invokeExact(new Object(), new Object(), 1, 2, 3, 4, 5, 6, 7);
assertEquals(x, 42);
}
@Test
public void testThrowPath() throws Throwable {
MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "throwEx", M_TYPE);
MethodHandle handler = LOOKUP.findStatic(TestCatchException.class, "handler", MethodType.methodType(int.class, Exception.class));
MethodHandle h = MethodHandles.catchException(target, Exception.class, handler);
int x = (int)h.invokeExact(new Object(), new Object(), 1, 2, 3, 4, 5, 6, 7);
assertEquals(x, 17);
}
static final Object masterParam = new Object();
static final Object[] masterTail = new Object[] { "str" };
static Exception masterEx = new Exception();
public static Object m1(Object o1, Object o2, Object o3, Object o4, Object o5,
Object o6, Object o7, Object o8, Object... tail) {
assertEquals(masterParam, o1);
assertEquals(masterParam, o2);
assertEquals(masterParam, o3);
assertEquals(masterParam, o4);
assertEquals(masterParam, o5);
assertEquals(masterParam, o6);
assertEquals(masterParam, o7);
assertEquals(masterParam, o8);
assertEquals(masterTail, tail);
return tail;
}
public static Object m2(Exception e, Object o1, Object o2, Object o3, Object o4,
Object o5, Object o6, Object o7, Object o8, Object... tail) {
assertEquals(masterEx, e);
assertEquals(masterParam, o1);
assertEquals(masterParam, o2);
assertEquals(masterParam, o3);
assertEquals(masterParam, o4);
assertEquals(masterParam, o5);
assertEquals(masterParam, o6);
assertEquals(masterParam, o7);
assertEquals(masterParam, o8);
assertEquals(masterTail, tail);
return tail;
}
public static Object throwEx(Object o1, Object o2, Object o3, Object o4, Object o5,
Object o6, Object o7, Object o8, Object... tail) throws Exception {
assertEquals(masterParam, o1);
assertEquals(masterParam, o2);
assertEquals(masterParam, o3);
assertEquals(masterParam, o4);
assertEquals(masterParam, o5);
assertEquals(masterParam, o6);
assertEquals(masterParam, o7);
assertEquals(masterParam, o8);
assertEquals(masterTail, tail);
throw masterEx;
}
@Test
public void testVarargsCollectorNoThrow() throws Throwable {
MethodType t1 = MethodType.methodType(Object.class, Object.class, Object.class, Object.class, Object.class,
Object.class, Object.class, Object.class, Object.class, Object[].class);
MethodType t2 = t1.insertParameterTypes(0, Exception.class);
MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "m1", t1)
.asVarargsCollector(Object[].class);
MethodHandle catcher = LOOKUP.findStatic(TestCatchException.class, "m2", t2)
.asVarargsCollector(Object[].class);
MethodHandle gwc = MethodHandles.catchException(target, Exception.class, catcher);
Object o = masterParam;
Object[] obj1 = masterTail;
Object r2 = gwc.invokeExact(o, o, o, o, o, o, o, o, obj1);
assertEquals(r2, obj1);
}
@Test
public void testVarargsCollectorThrow() throws Throwable {
MethodType t1 = MethodType.methodType(Object.class, Object.class, Object.class, Object.class, Object.class,
Object.class, Object.class, Object.class, Object.class, Object[].class);
MethodType t2 = t1.insertParameterTypes(0, Exception.class);
MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "throwEx", t1)
.asVarargsCollector(Object[].class);
MethodHandle catcher = LOOKUP.findStatic(TestCatchException.class, "m2", t2)
.asVarargsCollector(Object[].class);
MethodHandle gwc = MethodHandles.catchException(target, Exception.class, catcher);
Object o = masterParam;
Object[] obj1 = masterTail;
Object r2 = gwc.invokeExact(o, o, o, o, o, o, o, o, obj1);
assertEquals(r2, obj1);
}
public static void main(String[] args) throws Throwable {
TestCatchException test = new TestCatchException();
test.testNoThrowPath();
test.testThrowPath();
test.testVarargsCollectorNoThrow();
test.testVarargsCollectorThrow();
System.out.println("TEST PASSED");
}
}
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