annotate graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/processor/TruffleProcessorTest.java @ 21420:fb17e716b03c

The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Tue, 19 May 2015 12:30:51 +0200
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children 24d12404e70a
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fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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6 * under the terms of the GNU General Public License version 2 only, as
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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12 * version 2 for more details (a copy is included in the LICENSE file that
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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16 * 2 along with this work; if not, write to the Free Software Foundation,
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.api.dsl.test.processor;
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24
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25 import com.oracle.truffle.dsl.processor.verify.VerifyTruffleProcessor;
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26 import java.util.Locale;
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27 import java.util.ServiceLoader;
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28 import javax.annotation.processing.Processor;
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29 import javax.tools.Diagnostic;
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30 import javax.tools.JavaFileObject;
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31 import static org.junit.Assert.*;
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32 import org.junit.Test;
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33
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34 /**
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35 * Verify errors emitted by the processor.
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36 *
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37 * @author Jaroslav Tulach
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38 */
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39 public class TruffleProcessorTest {
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40 @Test
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41 public void childCannotBeFinal() throws Exception {
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42 // @formatter:off
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43 String code = "package x.y.z;\n" +
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44 "import com.oracle.truffle.api.nodes.Node;\n" +
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45 "abstract class MyNode extends Node {\n" +
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46 " @Child final MyNode first;\n" +
fb17e716b03c The annotation processor should verify proper use of @Child annotation during compilation time and prevent usage of final.
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47 " MyNode(MyNode n) {\n" +
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48 " this.first = n;\n" +
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49 " };\n" +
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50 "}\n";
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51 // @formatter:on
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52
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53 Compile c = Compile.create(VerifyTruffleProcessor.class, code);
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54 c.assertErrors();
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55 boolean ok = false;
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56 StringBuilder msgs = new StringBuilder();
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57 for (Diagnostic<? extends JavaFileObject> e : c.getErrors()) {
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58 String msg = e.getMessage(Locale.ENGLISH);
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59 if (msg.contains("cannot be final")) {
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60 ok = true;
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61 }
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62 msgs.append("\n").append(msg);
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63 }
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64 if (!ok) {
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65 fail("Should contain warning about final:" + msgs);
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66 }
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67 }
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68
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69 @Test
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70 public void workAroundCannonicalDependency() throws Exception {
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71 Class<?> myProc = VerifyTruffleProcessor.class;
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72 assertNotNull(myProc);
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73 StringBuilder sb = new StringBuilder();
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74 sb.append("Cannot find ").append(myProc);
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75 for (Processor load : ServiceLoader.load(Processor.class)) {
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76 sb.append("Found ").append(load);
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77 if (myProc.isInstance(load)) {
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78 return;
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79 }
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80 }
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81 fail(sb.toString());
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82 }
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83 }