1 /*
   2  * Copyright (c) 2014, 2018, 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 package vm.mlvm.share;
  25 
  26 import java.util.List;
  27 import java.util.ArrayList;
  28 import vm.share.options.OptionObjectFactory;
  29 import java.util.regex.Pattern;
  30 
  31 /**
  32  * Implementation of vm.share.options.OptionObjectFactory interface.
  33  * Parses the comma-separated list of exception class names.
  34  *
  35  * @see vm.mlvm.share.MlvmTest
  36  * @see vm.mlvm.share.MlvmTestExecutor#launch(Class<?> testClass, Object[] constructorArgs)
  37  *
  38  */
  39 
  40 public class ExceptionsOptionObjectFactory implements OptionObjectFactory<List<Class<? extends Throwable>>> {
  41 
  42     private static final String DESCRIPTION = "list of exception class names separated by comma";
  43 
  44     @Override
  45     public String getPlaceholder() {
  46         return DESCRIPTION;
  47     }
  48 
  49     @Override
  50     public String getDescription() {
  51         return DESCRIPTION;
  52     }
  53 
  54     @Override
  55     public String getParameterDescription(String param) {
  56         return "exception of type " + param;
  57     }
  58 
  59     @Override
  60     public String[] getPossibleValues() {
  61         return new String[] { Throwable.class.getName() };
  62     }
  63 
  64     @Override
  65     public String getDefaultValue() {
  66         return "";
  67     }
  68 
  69     @Override
  70     public List<Class<? extends Throwable>> getObject(String classNameList) {
  71         List<Class<? extends Throwable>> result = new ArrayList<>();
  72         classNameList = classNameList.trim();
  73 
  74         if (!classNameList.isEmpty()) {
  75             for (String className : classNameList.split(",")) {
  76                 result.add(getClassFor(className.trim()));
  77             }
  78         }
  79 
  80         return result;
  81     }
  82 
  83     private static Class<? extends Throwable> getClassFor(String className) {
  84         try {
  85             return Class.forName(className).asSubclass(Throwable.class);
  86         } catch (ClassNotFoundException e) {
  87             throw new RuntimeException("Cannot find class '" + className + "'", e);
  88         } catch (ClassCastException e) {
  89             throw new RuntimeException("Subclass of " + Throwable.class.getName() + " should be specified. Cannot cast '" + className + "' to the Throwable", e);
  90         }
  91     }
  92 }