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 java.lang.reflect.code.OpTransformer;
 28 import java.lang.reflect.code.op.CoreOp;
 29 import java.lang.reflect.code.Op;
 30 import java.lang.reflect.code.interpreter.Interpreter;
 31 import java.lang.reflect.Method;
 32 import java.lang.runtime.CodeReflection;
 33 import java.util.Optional;
 34 import java.util.stream.Stream;
 35 
 36 /*
 37  * @test
 38  * @run testng TestForOp
 39  */
 40 
 41 public class TestForOp {
 42 
 43     @CodeReflection
 44     public static int f() {
 45         int j = 0;
 46         for (int i = 0; i < 10; i++) {
 47             j += i;
 48         }
 49         return j;
 50     }
 51 
 52     @Test
 53     public void testf() {
 54         CoreOp.FuncOp f = getFuncOp("f");
 55 
 56         f.writeTo(System.out);
 57 
 58         CoreOp.FuncOp lf = f.transform(OpTransformer.LOWERING_TRANSFORMER);
 59 
 60         lf.writeTo(System.out);
 61 
 62         Assert.assertEquals(Interpreter.invoke(lf), f());
 63     }
 64 
 65     @CodeReflection
 66     public static int f2() {
 67         int k = 0;
 68         for (int i = 0, j = 0; i < 10; i++, j++) {
 69             k += i;
 70             k += j;
 71         }
 72         return k;
 73     }
 74 
 75     @Test
 76     public void testf2() {
 77         CoreOp.FuncOp f = getFuncOp("f2");
 78 
 79         f.writeTo(System.out);
 80 
 81         CoreOp.FuncOp lf = f.transform(OpTransformer.LOWERING_TRANSFORMER);
 82 
 83         lf.writeTo(System.out);
 84 
 85         Assert.assertEquals(Interpreter.invoke(lf), f2());
 86     }
 87 
 88     @CodeReflection
 89     public static int f3() {
 90         int k = 0;
 91         int i = 0;
 92         int j = 0;
 93         for (i = 0, j = 0; i < 10; i++, j++) {
 94             k += i;
 95             k += j;
 96         }
 97         return k;
 98     }
 99 
100     @Test
101     public void testf3() {
102         CoreOp.FuncOp f = getFuncOp("f3");
103 
104         f.writeTo(System.out);
105 
106         CoreOp.FuncOp lf = f.transform(OpTransformer.LOWERING_TRANSFORMER);
107 
108         lf.writeTo(System.out);
109 
110         Assert.assertEquals(Interpreter.invoke(lf), f3());
111     }
112 
113     static CoreOp.FuncOp getFuncOp(String name) {
114         Optional<Method> om = Stream.of(TestForOp.class.getDeclaredMethods())
115                 .filter(m -> m.getName().equals(name))
116                 .findFirst();
117 
118         Method m = om.get();
119         return m.getCodeModel().get();
120     }
121 }