1 /*

     2  * Copyright (c) 2014, 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 

    26 import java.io.File;

    27 import java.lang.reflect.Method;

    28 

    29 

    30 public class SJavacTestUtil {

    31 

    32     public static void runSjavacTest(String testClassName, String[] args)

    33             throws Exception {

    34 

    35         if (!isSJavacOnClassPath()) {

    36             System.out.println("sjavac not available: pass by default");

    37             return;

    38         }

    39 

    40         File srcDir = new File(System.getProperty("test.src"));

    41         File clsDir = new File(System.getProperty("test.classes"));

    42 

    43         File src = new File(srcDir, testClassName + ".java");

    44         File cls = new File(clsDir, testClassName + ".class");

    45 

    46         if (cls.lastModified() < src.lastModified()) {

    47             System.err.println("Recompiling test class...");

    48             String[] javacArgs = { "-d", clsDir.getPath(), src.getPath() };

    49             int rc = com.sun.tools.javac.Main.compile(javacArgs);

    50             if (rc != 0)

    51                 throw new Exception("compilation failed");

    52         }

    53 

    54         Class<?> sjavac = Class.forName(testClassName);

    55         Method main = sjavac.getMethod("main", String[].class);

    56         main.invoke(null, new Object[] { args });

    57 

    58     }

    59 

    60     private static boolean isSJavacOnClassPath() {

    61         String cls = "com/sun/tools/sjavac/Main.class";

    62         return SJavacTestUtil.class.getClassLoader().getResource(cls) != null;

    63     }

    64 }