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view 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> |
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date | Tue, 19 May 2015 12:30:51 +0200 |
parents | |
children | 24d12404e70a |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.api.dsl.test.processor; import com.oracle.truffle.dsl.processor.verify.VerifyTruffleProcessor; import java.util.Locale; import java.util.ServiceLoader; import javax.annotation.processing.Processor; import javax.tools.Diagnostic; import javax.tools.JavaFileObject; import static org.junit.Assert.*; import org.junit.Test; /** * Verify errors emitted by the processor. * * @author Jaroslav Tulach */ public class TruffleProcessorTest { @Test public void childCannotBeFinal() throws Exception { // @formatter:off String code = "package x.y.z;\n" + "import com.oracle.truffle.api.nodes.Node;\n" + "abstract class MyNode extends Node {\n" + " @Child final MyNode first;\n" + " MyNode(MyNode n) {\n" + " this.first = n;\n" + " };\n" + "}\n"; // @formatter:on Compile c = Compile.create(VerifyTruffleProcessor.class, code); c.assertErrors(); boolean ok = false; StringBuilder msgs = new StringBuilder(); for (Diagnostic<? extends JavaFileObject> e : c.getErrors()) { String msg = e.getMessage(Locale.ENGLISH); if (msg.contains("cannot be final")) { ok = true; } msgs.append("\n").append(msg); } if (!ok) { fail("Should contain warning about final:" + msgs); } } @Test public void workAroundCannonicalDependency() throws Exception { Class<?> myProc = VerifyTruffleProcessor.class; assertNotNull(myProc); StringBuilder sb = new StringBuilder(); sb.append("Cannot find ").append(myProc); for (Processor load : ServiceLoader.load(Processor.class)) { sb.append("Found ").append(load); if (myProc.isInstance(load)) { return; } } fail(sb.toString()); } }