| /* |
| * Copyright (c) 2017, 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 8173587 |
| * @summary metafactory should fail if the method name is not legal |
| */ |
| import java.lang.invoke.*; |
| import java.util.*; |
| |
| public class MetafactoryMethodNameTest { |
| |
| public static void main(String... args) { |
| goodName("x"); |
| goodName("xy"); |
| |
| goodName("]"); |
| goodName("x]"); |
| goodName("]y"); |
| goodName("x]y"); |
| |
| goodName("&"); |
| goodName("x&"); |
| goodName("&y"); |
| goodName("x&y"); |
| |
| badName("."); |
| badName("x."); |
| badName(".y"); |
| badName("x.y"); |
| |
| badName(";"); |
| badName("x;"); |
| badName(";y"); |
| badName("x;y"); |
| |
| badName("["); |
| badName("x["); |
| badName("[y"); |
| badName("x[y"); |
| |
| badName("/"); |
| badName("x/"); |
| badName("/y"); |
| badName("x/y"); |
| |
| badName("<"); |
| badName("x<"); |
| badName("<y"); |
| badName("x<y"); |
| |
| badName(">"); |
| badName("x>"); |
| badName(">y"); |
| badName("x>y"); |
| |
| badName(""); |
| badName("<init>"); |
| badName("<clinit>"); |
| } |
| |
| static MethodType mt(Class<?> ret, Class<?>... params) { |
| return MethodType.methodType(ret, params); |
| } |
| |
| static MethodHandle smh(Class<?> c, String name, MethodType desc) { |
| try { |
| return MethodHandles.lookup().findStatic(c, name, desc); |
| } catch (ReflectiveOperationException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| static Object[] arr(Object... args) { |
| return args; |
| } |
| |
| public static class C { |
| public static void m() {} |
| } |
| |
| public interface I {} |
| |
| private static MethodHandles.Lookup lookup = MethodHandles.lookup(); |
| private static MethodType toI = mt(I.class); |
| private static MethodType toVoid = mt(void.class); |
| private static MethodHandle mh = smh(C.class, "m", toVoid); |
| private static Class<?> lce = LambdaConversionException.class; |
| |
| static void goodName(String name) { |
| succeedMFLinkage(lookup, name, toI, toVoid, mh, toVoid); |
| succeedAltMFLinkage(lookup, name, toI, arr(toVoid, mh, toVoid, LambdaMetafactory.FLAG_SERIALIZABLE)); |
| } |
| |
| static void badName(String name) { |
| failMFLinkage(lookup, name, toI, toVoid, mh, toVoid, lce); |
| failAltMFLinkage(lookup, name, toI, arr(toVoid, mh, toVoid, LambdaMetafactory.FLAG_SERIALIZABLE), lce); |
| } |
| |
| static CallSite succeedMFLinkage(MethodHandles.Lookup lookup, |
| String name, |
| MethodType capType, |
| MethodType desc, |
| MethodHandle impl, |
| MethodType checked) { |
| try { |
| return LambdaMetafactory.metafactory(lookup, name, capType, desc, impl, checked); |
| } catch (Throwable t) { |
| String msg = String.format("Unexpected exception during linkage for metafactory(%s, %s, %s, %s, %s, %s)", |
| lookup, name, capType, desc, impl, checked); |
| throw new AssertionError(msg, t); |
| } |
| } |
| |
| static void failMFLinkage(MethodHandles.Lookup lookup, |
| String name, |
| MethodType capType, |
| MethodType desc, |
| MethodHandle impl, |
| MethodType checked, |
| Class<?> expectedExceptionType) { |
| try { |
| LambdaMetafactory.metafactory(lookup, name, capType, desc, impl, checked); |
| } catch (Throwable t) { |
| if (expectedExceptionType.isInstance(t)) { |
| return; |
| } else { |
| String msg = String.format("Unexpected exception: expected %s during linkage for metafactory(%s, %s, %s, %s, %s, %s)", |
| expectedExceptionType.getName(), |
| lookup, name, capType, desc, impl, checked); |
| throw new AssertionError(msg, t); |
| } |
| } |
| String msg = String.format("Unexpected success: expected %s during linkage for metafactory(%s, %s, %s, %s, %s, %s)", |
| expectedExceptionType.getName(), |
| lookup, name, capType, desc, impl, checked); |
| throw new AssertionError(msg); |
| } |
| |
| static CallSite succeedAltMFLinkage(MethodHandles.Lookup lookup, |
| String name, |
| MethodType capType, |
| Object[] args) { |
| try { |
| return LambdaMetafactory.altMetafactory(lookup, name, capType, args); |
| } catch (Throwable t) { |
| String msg = String.format("Unexpected exception during linkage for metafactory(%s, %s, %s, %s)", |
| lookup, name, capType, Arrays.asList(args)); |
| throw new AssertionError(msg, t); |
| } |
| } |
| |
| static void failAltMFLinkage(MethodHandles.Lookup lookup, |
| String name, |
| MethodType capType, |
| Object[] args, |
| Class<?> expectedExceptionType) { |
| try { |
| LambdaMetafactory.altMetafactory(lookup, name, capType, args); |
| } catch (Throwable t) { |
| if (expectedExceptionType.isInstance(t)) { |
| return; |
| } else { |
| String msg = String.format("Unexpected exception: expected %s during linkage for metafactory(%s, %s, %s, %s)", |
| expectedExceptionType.getName(), |
| lookup, name, capType, Arrays.asList(args)); |
| throw new AssertionError(msg, t); |
| } |
| } |
| String msg = String.format("Unexpected success: expected %s during linkage for metafactory(%s, %s, %s, %s)", |
| expectedExceptionType.getName(), |
| lookup, name, capType, Arrays.asList(args)); |
| throw new AssertionError(msg); |
| } |
| |
| } |