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 java.io.StringWriter;
 25 import java.lang.reflect.Member;
 26 import java.lang.reflect.Method;
 27 import java.lang.reflect.code.Op;
 28 import java.lang.reflect.code.OpTransformer;
 29 import java.lang.reflect.code.analysis.SSA;
 30 import java.lang.reflect.code.op.CoreOp;
 31 import java.lang.reflect.code.op.ExtendedOp;
 32 import java.lang.reflect.code.parser.OpParser;
 33 import java.lang.reflect.code.writer.OpWriter;
 34 import java.lang.runtime.CodeReflection;
 35 
 36 public class CodeReflectionTester {
 37 
 38     public static void main(String[] args) throws ReflectiveOperationException {
 39         if (args.length != 1) {
 40             System.err.println("Usage: CodeReflectionTester <classname>");
 41             System.exit(1);
 42         }
 43         Class<?> clazz = Class.forName(args[0]);
 44         for (Method m : clazz.getDeclaredMethods()) {
 45             check(m);
 46         }
 47     }
 48 
 49     static void check(Method method) throws ReflectiveOperationException {
 50         if (!method.isAnnotationPresent(CodeReflection.class)) {
 51             return;
 52         }
 53 
 54         LoweredModel lma = method.getAnnotation(LoweredModel.class);
 55         if (lma == null) {
 56             throw new AssertionError("No @IR annotation found on reflective method");
 57         }
 58 
 59         CoreOp.FuncOp f = method.getCodeModel().orElseThrow(() ->
 60                 new AssertionError("No code model for reflective method"));
 61         f = lower(f, lma.ssa());
 62 
 63         String actual = canonicalizeModel(method, f);
 64         String expected = canonicalizeModel(method, lma.value());
 65         if (!actual.equals(expected)) {
 66             throw new AssertionError(String.format("Bad code model\nFound:\n%s\n\nExpected:\n%s", actual, expected));
 67         }
 68     }
 69 
 70     static CoreOp.FuncOp lower(CoreOp.FuncOp f, boolean ssa) {
 71         f = f.transform(OpTransformer.LOWERING_TRANSFORMER);
 72         f.writeTo(System.out);
 73 
 74         if (ssa) {
 75             f = SSA.transform(f);
 76             f.writeTo(System.out);
 77         }
 78 
 79         return f;
 80     }
 81 
 82     // serializes dropping location information, parses, and then serializes, dropping location information
 83     static String canonicalizeModel(Member m, Op o) {
 84         return canonicalizeModel(m, serialize(o));
 85     }
 86 
 87     // parses, and then serializes, dropping location information
 88     static String canonicalizeModel(Member m, String d) {
 89         Op o;
 90         try {
 91             o = OpParser.fromString(ExtendedOp.FACTORY, d).get(0);
 92         } catch (Exception e) {
 93             throw new IllegalStateException(m.toString(), e);
 94         }
 95         return serialize(o);
 96     }
 97 
 98     // serializes, dropping location information
 99     static String serialize(Op o) {
100         StringWriter w = new StringWriter();
101         OpWriter.writeTo(w, o, OpWriter.LocationOption.DROP_LOCATION);
102         return w.toString();
103     }
104 }