1 /*

     2  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 6993301

    27  * @summary catch parameters do not have correct kind (i.e. ElementKind.EXCEPTION_PARAMETER)

    28  */

    29 

    30 import com.sun.source.tree.CompilationUnitTree;

    31 import com.sun.source.tree.IdentifierTree;

    32 import com.sun.source.tree.VariableTree;

    33 import com.sun.source.util.TreePathScanner;

    34 import com.sun.source.util.Trees;

    35 import com.sun.tools.javac.api.JavacTaskImpl;

    36 import java.io.IOException;

    37 import java.net.URI;

    38 import java.util.Arrays;

    39 import javax.lang.model.element.Element;

    40 import javax.lang.model.element.ElementKind;

    41 import javax.tools.JavaCompiler;

    42 import javax.tools.JavaFileObject;

    43 import javax.tools.SimpleJavaFileObject;

    44 import javax.tools.ToolProvider;

    45 

    46 /**

    47  *

    48  * @author Jan Lahoda

    49  */

    50 public class T6993301 {

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

    52         new T6993301().testExceptionParameterCorrectKind();

    53     }

    54 

    55     static class MyFileObject extends SimpleJavaFileObject {

    56         private String text;

    57         public MyFileObject(String text) {

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

    59             this.text = text;

    60         }

    61         @Override

    62         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

    63             return text;

    64         }

    65     }

    66 

    67     public void testExceptionParameterCorrectKind() throws IOException {

    68         final String bootPath = System.getProperty("sun.boot.class.path");

    69         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();

    70         assert tool != null;

    71 

    72         String code = "package test; public class Test { { try { } catch (NullPointerException ex) {} } }";

    73 

    74         final JavacTaskImpl ct = (JavacTaskImpl)tool.getTask(null, null, null,

    75                 Arrays.asList("-bootclasspath",  bootPath),

    76                 null, Arrays.asList(new MyFileObject(code)));

    77         CompilationUnitTree cut = ct.parse().iterator().next();

    78 

    79         ct.analyze();

    80 

    81         new TreePathScanner<Void, Void>() {

    82             @Override

    83             public Void visitVariable(VariableTree node, Void p) {

    84                 Element el = Trees.instance(ct).getElement(getCurrentPath());

    85 

    86                 assertNotNull(el);

    87                 assertEquals(ElementKind.EXCEPTION_PARAMETER, el.getKind());

    88 

    89                 return super.visitVariable(node, p);

    90             }

    91         }.scan(cut, null);

    92     }

    93 

    94     private void assertNotNull(Object o) {

    95         if (o == null)

    96             throw new AssertionError();

    97     }

    98 

    99     private <T> void assertEquals(T expected, T actual) {

   100         if (expected == null ? actual == null : expected.equals(actual))

   101             return;

   102         throw new AssertionError("expected: " + expected + ", actual: " + actual);

   103     }

   104 

   105 }