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 org.testng.Assert;
 25 import org.testng.annotations.Test;
 26 
 27 import jdk.incubator.code.OpTransformer;
 28 import jdk.incubator.code.dialect.core.CoreOp;
 29 import jdk.incubator.code.Op;
 30 import jdk.incubator.code.bytecode.BytecodeGenerator;
 31 
 32 import java.lang.invoke.MethodHandle;
 33 import java.lang.invoke.MethodHandles;
 34 import java.lang.reflect.Method;
 35 import jdk.incubator.code.CodeReflection;
 36 import java.util.Optional;
 37 import java.util.stream.Stream;
 38 
 39 /*
 40  * @test
 41  * @modules jdk.incubator.code
 42  * @run testng TestArrayCreation
 43  */
 44 
 45 public class TestArrayCreation {
 46     @CodeReflection
 47     public static String[] f() {
 48         return new String[10];
 49     }
 50 
 51     @Test
 52     public void testf() throws Throwable {
 53         CoreOp.FuncOp f = getFuncOp("f");
 54 
 55         MethodHandle mh = generate(f);
 56 
 57         Assert.assertEquals((String[]) mh.invoke(), f());
 58     }
 59 
 60     @CodeReflection
 61     public static String[][] f2() {
 62         return new String[10][];
 63     }
 64 
 65     @Test
 66     public void testf2() throws Throwable {
 67         CoreOp.FuncOp f = getFuncOp("f2");
 68 
 69         MethodHandle mh = generate(f);
 70 
 71         Assert.assertEquals((String[][]) mh.invoke(), f2());
 72     }
 73 
 74     @CodeReflection
 75     public static String[][] f3() {
 76         return new String[10][10];
 77     }
 78 
 79     @Test
 80     public void testf3() throws Throwable {
 81         CoreOp.FuncOp f = getFuncOp("f3");
 82 
 83         MethodHandle mh = generate(f);
 84 
 85         Assert.assertEquals((String[][]) mh.invoke(), f3());
 86     }
 87 
 88     @CodeReflection
 89     public static String[][] f4() {
 90         return new String[][]{{"one", "two"}, {"three"}};
 91     }
 92 
 93     @Test
 94     public void testf4() throws Throwable {
 95         CoreOp.FuncOp f = getFuncOp("f4");
 96 
 97         MethodHandle mh = generate(f);
 98 
 99         Assert.assertEquals((String[][]) mh.invoke(), f4());
100     }
101 
102     static MethodHandle generate(CoreOp.FuncOp f) {
103         System.out.println(f.toText());
104 
105         CoreOp.FuncOp lf = f.transform(OpTransformer.LOWERING_TRANSFORMER);
106         System.out.println(lf.toText());
107 
108         return BytecodeGenerator.generate(MethodHandles.lookup(), lf);
109     }
110 
111     static CoreOp.FuncOp getFuncOp(String name) {
112         Optional<Method> om = Stream.of(TestArrayCreation.class.getDeclaredMethods())
113                 .filter(m -> m.getName().equals(name))
114                 .findFirst();
115 
116         Method m = om.get();
117         return Op.ofMethod(m).get();
118     }
119 }