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  * @run main Unreflect TestEnhancedForOp
 43  * @run junit TestEnhancedForOp
 44  */
 45 
 46 public class TestEnhancedForOp {
 47 
 48     @Reflect
 49     public static int f() {
 50         int j = 0;
 51         for (int i : List.of(1, 2, 3, 4)) {
 52             j += i;
 53         }
 54         return j;
 55     }
 56 
 57     static CoreOp.FuncOp getFuncOp(String name) {
 58         Optional<Method> om = Stream.of(TestEnhancedForOp.class.getDeclaredMethods())
 59                 .filter(m -> m.getName().equals(name))
 60                 .findFirst();
 61 
 62         Method m = om.get();
 63         return Op.ofMethod(m).get();
 64     }
 65 
 66     @Test
 67     public void testf() {
 68         CoreOp.FuncOp f = getFuncOp("f");
 69 
 70         System.out.println(f.toText());
 71 
 72         CoreOp.FuncOp lf = f.transform(CodeTransformer.LOWERING_TRANSFORMER);
 73 
 74         System.out.println(lf.toText());
 75 
 76         Assertions.assertEquals(f(), Interpreter.invoke(MethodHandles.lookup(), lf));
 77     }
 78 
 79 
 80     @Reflect
 81     public static int array(int[] a) {
 82         int j = 0;
 83         for (int i : a) {
 84             j += i;
 85         }
 86         return j;
 87     }
 88 
 89     @Test
 90     public void testArray() {
 91         CoreOp.FuncOp f = getFuncOp("array");
 92 
 93         System.out.println(f.toText());
 94 
 95         CoreOp.FuncOp lf = f.transform(CodeTransformer.LOWERING_TRANSFORMER);
 96 
 97         System.out.println(lf.toText());
 98 
 99         int[] ia = new int[] {1, 2, 3, 4};
100         Assertions.assertEquals(array(ia), Interpreter.invoke(MethodHandles.lookup(), lf, ia));
101     }
102 }