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

 /*

  * Copyright (c) 2011, 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 7080267

  * @summary Call to toString() from an ExpressionStatementTree doesn't take in

  *      consideration the ";" at the end

  */

 import com.sun.source.tree.BlockTree;

 import com.sun.source.tree.CompilationUnitTree;

 import com.sun.source.tree.StatementTree;

 import com.sun.source.tree.Tree;

 import java.io.IOException;

 import java.net.URI;

 import java.util.Arrays;

 import java.util.Collections;

 import java.util.List;

 import javax.tools.JavaFileObject;

 import javax.tools.SimpleJavaFileObject;

 import javax.tools.StandardJavaFileManager;

 import com.sun.source.util.JavacTask;

 import com.sun.source.util.TreeScanner;

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

 public class TestToString {

     String[] statements = {

         "i = i + 1;",

         "i++;",

         "m();",

         ";",

         "if (i == 0) return;",

         "while (i > 0) i--;",

         "{ }",

         "{ i++; }",

         "class C { }"

     };

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

         new TestToString().run();

     }

     void run() throws Exception {

         for (String s: statements) {

             test(s);

         }

         if (errors > 0)

             throw new Exception(errors + " errors found");

     }

     void test(String stmt) throws IOException {

         System.err.println("Test: " + stmt);

         List<String> options = Collections.<String>emptyList();

         List<? extends JavaFileObject> files = Arrays.asList(new JavaSource(stmt));

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

         checkEqual(scan(t.parse()), stmt);

     }

     String scan(Iterable<? extends CompilationUnitTree> trees) {

         class Scanner extends TreeScanner<Void,StringBuilder> {

             String scan(Iterable<? extends Tree> trees) {

                 StringBuilder sb = new StringBuilder();

                 scan(trees, sb);

                 return sb.toString();

             }

             @Override

             public Void scan(Tree tree, StringBuilder sb) {

                 if (print && tree instanceof StatementTree) {

                     sb.append(PREFIX);

                     sb.append(tree);

                     sb.append(SUFFIX);

                     return null;

                 } else {

                     return super.scan(tree, sb);

                 }

             }

             @Override

             public Void visitBlock(BlockTree tree, StringBuilder sb) {

                 print = true;

                 try {

                     return super.visitBlock(tree, sb);

                 } finally {

                     print = false;

                 }

             }

             boolean print = false;

         }

         return new Scanner().scan(trees);

     }

     void checkEqual(String found, String expect) {

         boolean match = (found == null) ? (expect == null) :

             expect.equals(found

                 .replaceAll("^\\Q" + PREFIX + "\\E\\s*", "")

                 .replaceAll("\\s*\\Q" + SUFFIX + "\\E$", "")

                 .replaceAll("\\s+", " "));

         if (!match)

             error("Mismatch: expected: " + expect + " found: " + found);

     }

     void error(String msg) {

         System.err.println("Error: " + msg);

         errors++;

     }

     static final String PREFIX = "#<";

     static final String SUFFIX = "#>";

     JavacTool tool = JavacTool.create();

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

     int errors = 0;

     static class JavaSource extends SimpleJavaFileObject {

         String source =

                 "class Test {\n" +

                 "    int i;\n" +

                 "    void m() {\n" +

                 "        #S\n" +

                 "    }\n" +

                 "}";

         public JavaSource(String stmt) {

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

             source = source.replace("#S", stmt);

         }

         @Override

         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

             return source;

         }

     }

 }