content: /*
   * Created on Feb 15, 2008
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
   * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
   * specific language governing permissions and limitations under the License.
   *
   * Copyright @2008-2012 the original author or authors.
   */
  package org.fest.assertions.error;
  
  import java.lang.reflect.AccessibleObject;
  import java.lang.reflect.Constructor;
  import java.security.AccessController;
  import java.security.PrivilegedAction;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import org.fest.util.Arrays;
  
  /**
   * Access to constructors using Java reflection.
   *
   * @author Yvonne Wang
   * @author Alex Ruiz
   */
  class ConstructorInvoker {
    private static Logger logger = Logger.getLogger(ConstructorInvoker.class.getCanonicalName());
  
    Object newInstance(String className, Class<?>[] parameterTypes, Object[] parameterValues) throws Exception {
      Class<?> targetType = Class.forName(className);
      Constructor<?> constructor = targetType.getConstructor(parameterTypes);
      boolean accessible = constructor.isAccessible();
      try {
        setAccessible(constructor, true);
        return constructor.newInstance(parameterValues);
      } finally {
        try {
          setAccessible(constructor, accessible);
        } catch (RuntimeException e) {
          String format = "Failed to restore \"accessible\" field in the constructor %s(%s)";
          logger.log(Level.SEVERE, String.format(format, className, Arrays.format(parameterTypes)));
        }
      }
    }
  
    private void setAccessible(AccessibleObject accessible, boolean value) {
      AccessController.doPrivileged(new SetAccessibleValueAction(accessible, value));
    }
  
    private static class SetAccessibleValueAction implements PrivilegedAction<Void> {
      private final AccessibleObject object;
      private final boolean accessible;
  
      private SetAccessibleValueAction(AccessibleObject object, boolean accessible) {
        this.object = object;
        this.accessible = accessible;
      }
  
      @Override
      public Void run() {
        object.setAccessible(accessible);
        return null;
      }
    }
  }
  