1 /*

     2  * Copyright (c) 2015, 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 import com.sun.source.tree.CompilationUnitTree;

    25 import com.sun.source.tree.Tree;

    26 import com.sun.source.util.SourcePositions;

    27 import com.sun.source.util.TreePath;

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

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

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

    31 import com.sun.tools.javac.util.Context;

    32 import java.util.ArrayList;

    33 import java.util.Arrays;

    34 import java.util.Iterator;

    35 import java.util.List;

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

    37 import javax.tools.Diagnostic;

    38 import javax.tools.DiagnosticCollector;

    39 import javax.tools.JavaCompiler;

    40 import javax.tools.JavaFileManager;

    41 import javax.tools.JavaFileObject;

    42 import javax.tools.ToolProvider;

    43 import javax.tools.StandardJavaFileManager;

    44 import com.sun.source.tree.ImportTree;

    45 import java.util.Collections;

    46 import java.io.PrintWriter;

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

    48 import static javax.tools.StandardLocation.CLASS_OUTPUT;

    49 

    50 /*

    51  * @test

    52  * @bug 8067384 8068488

    53  * @summary Verify that JavacParser can be extended

    54  */

    55 public class JavacExtensionTest {

    56 

    57     public static void main(String[] args) throws Exception {

    58         PrintWriter pw = new PrintWriter("trialSource.java", "UTF-8");

    59         pw.println("int x = 9;");

    60         pw.close();

    61         List<? extends Tree> defs = parse("trialSource.java");

    62         if (defs.size() != 1) {

    63             throw new AssertionError("Expected only one def, got: " + defs.size());

    64         }

    65         Tree tree = defs.get(0);

    66         if (tree instanceof VariableTree) {

    67             System.out.println("Passes!  --- " + tree);

    68         } else {

    69             throw new AssertionError("Expected VariableTree, got: " + tree);

    70         }

    71     }

    72 

    73     static List<? extends Tree> parse(String srcfile) throws Exception {

    74         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

    75         StandardJavaFileManager fileManager = compiler.getStandardFileManager(null, null, null);

    76         Iterable<? extends JavaFileObject> fileObjects = fileManager.getJavaFileObjects(srcfile);

    77         String classPath = System.getProperty("java.class.path");

    78         List<String> options = Arrays.asList("-classpath", classPath);

    79         DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();

    80         Context context = new Context();

    81         JavacTaskImpl task = (JavacTaskImpl) ((JavacTool) compiler).getTask(null, null,

    82                 diagnostics, options, null, fileObjects, context);

    83         TrialParserFactory.instance(context);

    84         Iterable<? extends CompilationUnitTree> asts = task.parse();

    85         Iterator<? extends CompilationUnitTree> it = asts.iterator();

    86         if (it.hasNext()) {

    87             CompilationUnitTree cut = it.next();

    88             return cut.getTypeDecls();

    89         } else {

    90             throw new AssertionError("Expected compilation unit");

    91         }

    92     }

    93 }