1 /*
 2  * Copyright (c) 2024, 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.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * @test
26  * @ignore Reflection on the contents of local classes is not supported.
27  * @summary Smoke test for captured values in local classes.
28  * @modules jdk.incubator.code
29  * @run junit TestLocalCapture
30  */
31 
32 import jdk.incubator.code.Op;
33 
34 import java.lang.invoke.MethodHandles;
35 import java.lang.reflect.Method;
36 import jdk.incubator.code.interpreter.Interpreter;
37 import jdk.incubator.code.dialect.core.CoreOp.FuncOp;
38 import jdk.incubator.code.Reflect;
39 import org.junit.jupiter.api.Assertions;
40 import org.junit.jupiter.params.ParameterizedTest;
41 import org.junit.jupiter.params.provider.MethodSource;
42 
43 import java.util.stream.IntStream;
44 
45 public class TestLocalCapture {
46 
47     int x = 13;
48     final int CONST = 1;
49 
50     @Reflect
51     public int sum(int y, int z) {
52         final int localConst = 2;
53         class Foo {
54             int sum(int z) { return localConst + x + y + z + CONST; };
55         }
56         return new Foo().sum(z);
57     }
58 
59     @ParameterizedTest
60     @MethodSource("ints")
61     public void testLocalCapture(int y) throws ReflectiveOperationException {
62         Method sum = TestLocalCapture.class.getDeclaredMethod("sum", int.class, int.class);
63         FuncOp model = Op.ofMethod(sum).get();
64         int found = (int)Interpreter.invoke(MethodHandles.lookup(), model, this, y, 17);
65         int expected = sum(y, 17);
66         Assertions.assertEquals(expected, found);
67     }
68 
69     public static IntStream ints() {
70         return IntStream.range(0, 50);
71     }
72 }