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 import jdk.incubator.code.CodeReflection;
25 import jdk.incubator.code.Op;
26 import jdk.incubator.code.OpTransformer;
27 import jdk.incubator.code.dialect.core.CoreOp;
28 import jdk.incubator.code.interpreter.Interpreter;
29 import org.junit.jupiter.api.Assertions;
30 import org.junit.jupiter.api.Test;
31 
32 import java.lang.invoke.MethodHandles;
33 import java.lang.reflect.Method;
34 import java.util.Optional;
35 import java.util.stream.Stream;
36 
37 /*
38  * @test
39  * @modules jdk.incubator.code
40  * @run junit TestWhileOp
41  */
42 
43 public class TestWhileOp {
44 
45     @CodeReflection
46     public static int whileLoop() {
47         int i = 0;
48         while (i < 10) {
49             i++;
50         }
51         return i;
52     }
53 
54     @Test
55     public void testWhileLoop() {
56         CoreOp.FuncOp f = getFuncOp("whileLoop");
57 
58         System.out.println(f.toText());
59 
60         CoreOp.FuncOp lf = f.transform(OpTransformer.LOWERING_TRANSFORMER);
61 
62         System.out.println(lf.toText());
63 
64         Assertions.assertEquals(whileLoop(), Interpreter.invoke(MethodHandles.lookup(), lf));
65     }
66 
67     @CodeReflection
68     public static int doWhileLoop() {
69         int i = 0;
70         do {
71             i++;
72         } while (i < 10);
73         return i;
74     }
75 
76     @Test
77     public void testDpWhileLoop() {
78         CoreOp.FuncOp f = getFuncOp("doWhileLoop");
79 
80         System.out.println(f.toText());
81 
82         CoreOp.FuncOp lf = f.transform(OpTransformer.LOWERING_TRANSFORMER);
83 
84         System.out.println(lf.toText());
85 
86         Assertions.assertEquals(doWhileLoop(), Interpreter.invoke(MethodHandles.lookup(), lf));
87     }
88 
89     static CoreOp.FuncOp getFuncOp(String name) {
90         Optional<Method> om = Stream.of(TestWhileOp.class.getDeclaredMethods())
91                 .filter(m -> m.getName().equals(name))
92                 .findFirst();
93 
94         Method m = om.get();
95         return Op.ofMethod(m).get();
96     }
97 }