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.Reflect;
 25 import jdk.incubator.code.CodeTransformer;
 26 import jdk.incubator.code.Op;
 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.List;
 35 import java.util.Optional;
 36 import java.util.stream.Stream;
 37 
 38 /*
 39  * @test
 40  * @modules jdk.incubator.code
 41  * @run junit TestEnhancedForOp
 42  */
 43 
 44 public class TestEnhancedForOp {
 45 
 46     @Reflect
 47     public static int f() {
 48         int j = 0;
 49         for (int i : List.of(1, 2, 3, 4)) {
 50             j += i;
 51         }
 52         return j;
 53     }
 54 
 55     static CoreOp.FuncOp getFuncOp(String name) {
 56         Optional<Method> om = Stream.of(TestEnhancedForOp.class.getDeclaredMethods())
 57                 .filter(m -> m.getName().equals(name))
 58                 .findFirst();
 59 
 60         Method m = om.get();
 61         return Op.ofMethod(m).get();
 62     }
 63 
 64     @Test
 65     public void testf() {
 66         CoreOp.FuncOp f = getFuncOp("f");
 67 
 68         System.out.println(f.toText());
 69 
 70         CoreOp.FuncOp lf = f.transform(CodeTransformer.LOWERING_TRANSFORMER);
 71 
 72         System.out.println(lf.toText());
 73 
 74         Assertions.assertEquals(f(), Interpreter.invoke(MethodHandles.lookup(), lf));
 75     }
 76 
 77 
 78     @Reflect
 79     public static int array(int[] a) {
 80         int j = 0;
 81         for (int i : a) {
 82             j += i;
 83         }
 84         return j;
 85     }
 86 
 87     @Test
 88     public void testArray() {
 89         CoreOp.FuncOp f = getFuncOp("array");
 90 
 91         System.out.println(f.toText());
 92 
 93         CoreOp.FuncOp lf = f.transform(CodeTransformer.LOWERING_TRANSFORMER);
 94 
 95         System.out.println(lf.toText());
 96 
 97         int[] ia = new int[] {1, 2, 3, 4};
 98         Assertions.assertEquals(array(ia), Interpreter.invoke(MethodHandles.lookup(), lf, ia));
 99     }
100 }