171 lines
7.0 KiB
Java
171 lines
7.0 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8027823
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* @run junit test.java.lang.invoke.TestCatchException
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*/
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package test.java.lang.invoke;
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import java.lang.invoke.*;
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import org.junit.*;
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import static org.junit.Assert.*;
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public class TestCatchException {
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static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
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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);
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private static int noThrow(Object o1, Object o2, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
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return 42;
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}
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private static int throwEx(Object o1, Object o2, int i1, int i2, int i3, int i4, int i5, int i6, int i7) throws Exception {
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throw new Exception();
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}
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private static int handler(Exception e) {
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return 17;
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}
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@Test
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public void testNoThrowPath() throws Throwable {
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MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "noThrow", M_TYPE);
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MethodHandle handler = LOOKUP.findStatic(TestCatchException.class, "handler", MethodType.methodType(int.class, Exception.class));
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MethodHandle h = MethodHandles.catchException(target, Exception.class, handler);
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int x = (int)h.invokeExact(new Object(), new Object(), 1, 2, 3, 4, 5, 6, 7);
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assertEquals(x, 42);
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}
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@Test
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public void testThrowPath() throws Throwable {
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MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "throwEx", M_TYPE);
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MethodHandle handler = LOOKUP.findStatic(TestCatchException.class, "handler", MethodType.methodType(int.class, Exception.class));
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MethodHandle h = MethodHandles.catchException(target, Exception.class, handler);
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int x = (int)h.invokeExact(new Object(), new Object(), 1, 2, 3, 4, 5, 6, 7);
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assertEquals(x, 17);
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}
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static final Object masterParam = new Object();
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static final Object[] masterTail = new Object[] { "str" };
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static Exception masterEx = new Exception();
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public static Object m1(Object o1, Object o2, Object o3, Object o4, Object o5,
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Object o6, Object o7, Object o8, Object... tail) {
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assertEquals(masterParam, o1);
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assertEquals(masterParam, o2);
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assertEquals(masterParam, o3);
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assertEquals(masterParam, o4);
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assertEquals(masterParam, o5);
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assertEquals(masterParam, o6);
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assertEquals(masterParam, o7);
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assertEquals(masterParam, o8);
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assertEquals(masterTail, tail);
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return tail;
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}
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public static Object m2(Exception e, Object o1, Object o2, Object o3, Object o4,
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Object o5, Object o6, Object o7, Object o8, Object... tail) {
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assertEquals(masterEx, e);
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assertEquals(masterParam, o1);
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assertEquals(masterParam, o2);
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assertEquals(masterParam, o3);
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assertEquals(masterParam, o4);
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assertEquals(masterParam, o5);
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assertEquals(masterParam, o6);
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assertEquals(masterParam, o7);
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assertEquals(masterParam, o8);
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assertEquals(masterTail, tail);
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return tail;
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}
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public static Object throwEx(Object o1, Object o2, Object o3, Object o4, Object o5,
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Object o6, Object o7, Object o8, Object... tail) throws Exception {
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assertEquals(masterParam, o1);
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assertEquals(masterParam, o2);
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assertEquals(masterParam, o3);
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assertEquals(masterParam, o4);
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assertEquals(masterParam, o5);
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assertEquals(masterParam, o6);
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assertEquals(masterParam, o7);
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assertEquals(masterParam, o8);
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assertEquals(masterTail, tail);
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throw masterEx;
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}
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@Test
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public void testVarargsCollectorNoThrow() throws Throwable {
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MethodType t1 = MethodType.methodType(Object.class, Object.class, Object.class, Object.class, Object.class,
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Object.class, Object.class, Object.class, Object.class, Object[].class);
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MethodType t2 = t1.insertParameterTypes(0, Exception.class);
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MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "m1", t1)
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.asVarargsCollector(Object[].class);
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MethodHandle catcher = LOOKUP.findStatic(TestCatchException.class, "m2", t2)
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.asVarargsCollector(Object[].class);
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MethodHandle gwc = MethodHandles.catchException(target, Exception.class, catcher);
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Object o = masterParam;
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Object[] obj1 = masterTail;
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Object r2 = gwc.invokeExact(o, o, o, o, o, o, o, o, obj1);
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assertEquals(r2, obj1);
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}
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@Test
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public void testVarargsCollectorThrow() throws Throwable {
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MethodType t1 = MethodType.methodType(Object.class, Object.class, Object.class, Object.class, Object.class,
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Object.class, Object.class, Object.class, Object.class, Object[].class);
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MethodType t2 = t1.insertParameterTypes(0, Exception.class);
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MethodHandle target = LOOKUP.findStatic(TestCatchException.class, "throwEx", t1)
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.asVarargsCollector(Object[].class);
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MethodHandle catcher = LOOKUP.findStatic(TestCatchException.class, "m2", t2)
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.asVarargsCollector(Object[].class);
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MethodHandle gwc = MethodHandles.catchException(target, Exception.class, catcher);
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Object o = masterParam;
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Object[] obj1 = masterTail;
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Object r2 = gwc.invokeExact(o, o, o, o, o, o, o, o, obj1);
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assertEquals(r2, obj1);
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}
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public static void main(String[] args) throws Throwable {
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TestCatchException test = new TestCatchException();
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test.testNoThrowPath();
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test.testThrowPath();
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test.testVarargsCollectorNoThrow();
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test.testVarargsCollectorThrow();
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System.out.println("TEST PASSED");
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}
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}
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