content: /*
   * Created on Jan 1, 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 @2008-2013 the original author or authors.
   */
  package org.fest.reflect.util;
  
  import org.jetbrains.annotations.NotNull;
  import java.lang.reflect.AccessibleObject;
  import java.security.AccessController;
  import java.security.PrivilegedAction;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import static org.fest.util.Preconditions.checkNotNull;
  
  /**
   * Utility methods related to {@code AccessibleObject}s.
   *
   * @author Alex Ruiz
   */
  public final class Accessibles {
    private static Logger logger = Logger.getLogger(Accessibles.class.getCanonicalName());
  
    private Accessibles() {
    }
  
    /**
     * Sets the {@code accessible} flag of the given {@code AccessibleObject} to the given {@code boolean} value, ignoring
     * any thrown exception.
     *
     * @param o          the given {@code AccessibleObject}.
     * @param accessible the value to set the {@code accessible} flag to.
     */
    public static void setAccessibleIgnoringExceptions(@NotNull AccessibleObject o, boolean accessible) {
      try {
        setAccessible(o, accessible);
      } catch (RuntimeException ignored) {
        String format = "Failed to set 'accessible' flag of %s to %s";
        logger.log(Level.SEVERE, String.format(format, o.toString(), String.valueOf(accessible)), ignored);
      }
    }
  
    /**
     * Sets the {@code accessible} flag of the given {@code AccessibleObject} to {@code true}.
     *
     * @param o the given {@code AccessibleObject}.
     * @throws NullPointerException if the given  {@code AccessibleObject} is {@code null}.
     * @throws SecurityException    if the request is denied.
     */
    public static void makeAccessible(@NotNull AccessibleObject o) {
      setAccessible(o, true);
    }
  
    /**
     * Sets the {@code accessible} flag of the given {@code AccessibleObject} to the given {@code boolean} value.
     *
     * @param o          the given {@code AccessibleObject}.
     * @param accessible the value to set the {@code accessible} flag to.
     * @throws NullPointerException if the given  {@code AccessibleObject} is {@code null}.
     * @throws SecurityException    if the request is denied.
     */
    public static void setAccessible(@NotNull AccessibleObject o, boolean accessible) {
      AccessController.doPrivileged(new SetAccessibleAction(o, accessible));
    }
  
    private static class SetAccessibleAction implements PrivilegedAction<Void> {
      private final AccessibleObject o;
      private final boolean accessible;
  
      SetAccessibleAction(@NotNull AccessibleObject o, boolean accessible) {
        this.o = checkNotNull(o);
        this.accessible = accessible;
      }
  
      @Override
      public Void run() {
        o.setAccessible(accessible);
        return null;
      }
    }
  }
  