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  * @run testng TestBlockParameters
27  */
28 
29 import org.testng.Assert;
30 import org.testng.annotations.Test;
31 
32 import java.lang.reflect.code.Block;
33 import java.lang.reflect.code.CodeElement;
34 import java.lang.reflect.code.Op;
35 import java.lang.reflect.code.type.FunctionType;
36 import java.lang.reflect.code.type.JavaType;
37 
38 import static java.lang.reflect.code.op.CoreOp.*;
39 import static java.lang.reflect.code.type.FunctionType.functionType;
40 import static java.lang.reflect.code.type.JavaType.INT;
41 
42 public class TestBlockParameters {
43     static FuncOp m() {
44         return func("f", functionType(INT, INT, INT))
45                 .body(fe -> {
46                     LambdaOp lop = lambda(fe.parentBody(), functionType(INT, INT), JavaType.type(FunctionType.class))
47                             .body(le -> {
48                                 le.op(_return(le.parameters().get(0)));
49                             });
50                     fe.op(lop);
51                     Block.Builder b = fe.block(INT, INT);
52                     fe.op(branch(b.successor(fe.parameters())));
53 
54                     b.op(_return(b.parameters().get(0)));
55                 });
56     }
57 
58     @Test
59     public void t() {
60         FuncOp m = m();
61         m.traverse(null, CodeElement.blockVisitor((_, b) -> {
62             for (Block.Parameter p : b.parameters()) {
63                 testBlockParameter(p);
64             }
65 
66             return null;
67         }));
68     }
69 
70     void testBlockParameter(Block.Parameter p) {
71         Assert.assertEquals(p.index(), p.declaringBlock().parameters().indexOf(p));
72 
73         if (p.invokableOperation() instanceof Op.Invokable iop) {
74             Assert.assertTrue(p.declaringBlock().isEntryBlock());
75             Assert.assertEquals(p.index(), iop.parameters().indexOf(p));
76         } else {
77             // There are no non-invokable operations with bodies in the model
78             Assert.assertFalse(p.declaringBlock().isEntryBlock());
79         }
80     }
81 }