aoqi@0: /*
aoqi@0:  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6921495
aoqi@0:  * @summary spurious semicolons in class def cause empty NOPOS blocks
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.*;
aoqi@0: import java.net.*;
aoqi@0: import java.util.*;
aoqi@0: import javax.tools.*;
aoqi@0: import com.sun.source.util.*;
aoqi@0: 
aoqi@0: public class ExtraSemiTest {
aoqi@0: 
aoqi@0:     static class JavaSource extends SimpleJavaFileObject {
aoqi@0: 
aoqi@0:         final static String source =
aoqi@0:                         "class C {\n" +
aoqi@0:                         "    int x;;\n" +
aoqi@0:                         "    class X { int i;; };\n" +
aoqi@0:                         "}";
aoqi@0: 
aoqi@0:         JavaSource() {
aoqi@0:             super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE);
aoqi@0:         }
aoqi@0: 
aoqi@0:         @Override
aoqi@0:         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0:             return source;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     public static void main(String... args) throws IOException {
aoqi@0:         new ExtraSemiTest().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws IOException {
aoqi@0:         File destDir = new File("classes"); destDir.mkdir();
aoqi@0:         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
aoqi@0:         JavaSource source = new JavaSource();
aoqi@0:         JavacTask ct = (JavacTask)tool.getTask(null, null, null,
aoqi@0:                 Arrays.asList("-d", destDir.getPath(), "-XD-printsource"),
aoqi@0:                 null,
aoqi@0:                 Arrays.asList(source));
aoqi@0:         Boolean ok = ct.call();
aoqi@0:         if (!ok) throw new AssertionError("compilation failed");
aoqi@0: 
aoqi@0:         String text = readFile(new File(destDir, "C.java"));
aoqi@0:         System.out.println(text);
aoqi@0: 
aoqi@0:         // compress/canonicalize all whitespace
aoqi@0:         String canon = text.replaceAll("\\s+", " ");
aoqi@0:         System.out.println("canon: " + canon);
aoqi@0: 
aoqi@0:         // There are no empty blocks in the original text.
aoqi@0:         // C will be given a default constructor "C() { super(); }" which
aoqi@0:         // does not have any empty blocks.
aoqi@0:         // The bug is that spurious semicolons in the class defn are parsed
aoqi@0:         // into redundant empty blocks in the tree, so verify there are
aoqi@0:         // no empty blocks in the -printsource output
aoqi@0: 
aoqi@0:         if (canon.contains("{ }"))
aoqi@0:             throw new AssertionError("unexpected empty block found");
aoqi@0:     }
aoqi@0: 
aoqi@0:     String readFile(File f) throws IOException {
aoqi@0:         int len = (int) f.length();
aoqi@0:         byte[] data = new byte[len];
aoqi@0:         DataInputStream in = new DataInputStream(new FileInputStream(f));
aoqi@0:         try {
aoqi@0:             in.readFully(data);
aoqi@0:             return new String(data);
aoqi@0:         } finally {
aoqi@0:             in.close();
aoqi@0:         }
aoqi@0:     }
aoqi@0: }