Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * 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.

  */

 /*

  * @test

  * @bug     8040822

  * @summary Check that all TaskEvents are balanced.

  */

 import java.io.*;

 import java.net.URI;

 import java.util.*;

 import java.util.Map.Entry;

 import javax.tools.*;

 import com.sun.source.util.*;

 import com.sun.source.util.TaskEvent.Kind;

 import com.sun.tools.javac.api.JavacTool;

 import com.sun.tools.javac.comp.CompileStates.CompileState;

 public class EventsBalancedTest {

     JavacTool tool = (JavacTool) ToolProvider.getSystemJavaCompiler();

     StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);

     public static void main(String... args) throws IOException {

         new EventsBalancedTest().test();

     }

     void test() throws IOException {

         TestSource a = new TestSource("B", "class B extends A { }");

         TestSource b = new TestSource("A", "abstract class A { }");

         test(null, Arrays.asList(a, b));

         test(null, Arrays.asList(b, a));

         test(Arrays.asList("-XD-relax"), Arrays.asList(a, b));

         test(Arrays.asList("-XD-relax"), Arrays.asList(b, a));

         for (CompileState stop : CompileState.values()) {

             test(Arrays.asList("-XDshouldStopPolicyIfNoError=" + stop,

                                "-XDshouldStopPolicyIfError=" + stop),

                  Arrays.asList(a, b));

             test(Arrays.asList("-XDshouldStopPolicyIfNoError=" + stop,

                                "-XDshouldStopPolicyIfError=" + stop),

                  Arrays.asList(b, a));

         }

     }

     void test(Iterable<String> options, Iterable<JavaFileObject> files) throws IOException {

         StringWriter sw = new StringWriter();

         PrintWriter pw = new PrintWriter(sw);

         TestListener listener = new TestListener();

         JavacTask task = tool.getTask(pw, fm, null, options, null, files);

         task.setTaskListener(listener);

         task.call();

         for (Entry<Kind, Integer> e : listener.kind2Count.entrySet()) {

             if (e.getValue() != null && e.getValue() != 0) {

                 throw new IllegalStateException("Not balanced event: " + e.getKey());

             }

         }

     }

     static class TestListener implements TaskListener {

         final Map<Kind, Integer> kind2Count = new HashMap<>();

         int get(Kind k) {

             Integer count = kind2Count.get(k);

             if (count == null)

                 kind2Count.put(k, count = 0);

             return count;

         }

         @Override

         public void started(TaskEvent e) {

             kind2Count.put(e.getKind(), get(e.getKind()) + 1);

         }

         @Override

         public void finished(TaskEvent e) {

             int count = get(e.getKind());

             if (count <= 0)

                 throw new IllegalStateException("count<=0 for: " + e.getKind());

             kind2Count.put(e.getKind(), count - 1);

         }

     }

     static class TestSource extends SimpleJavaFileObject {

         final String content;

         public TestSource(String fileName, String content) {

             super(URI.create("myfo:/" + fileName + ".java"), JavaFileObject.Kind.SOURCE);

             this.content = content;

         }

         @Override

         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

             return content;

         }

     }

 }