/*
 * 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 2012-2024 the original author or authors.
 */
package org.assertj.core.util.introspection;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Member;
import java.lang.reflect.Modifier;

/**
 * Shameless copy from Apache commons lang and then modified to keep only the interesting stuff for AssertJ.
 * 
 * Contains common code for working with Methods/Constructors, extracted and
 * refactored from <code>MethodUtils</code> when it was imported from Commons
 * BeanUtils.
 */
abstract class MemberUtils {

  private static final int ACCESS_TEST = Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE;

  /**
   * XXX Default access superclass workaround
   *
   * When a public class has a default access superclass with public members,
   * these members are accessible. Calling them from compiled code works fine.
   * Unfortunately, on some JVMs, using reflection to invoke these members
   * seems to (wrongly) prevent access even when the modifier is public.
   * Calling setAccessible(true) solves the problem but will only work from
   * sufficiently privileged code. Better workarounds would be gratefully
   * accepted.
   * @param o the AccessibleObject to set as accessible
   */
  static void setAccessibleWorkaround(AccessibleObject o) {
    if (o == null || o.isAccessible()) {
      return;
    }
    Member m = (Member) o;
    if (Modifier.isPublic(m.getModifiers())
        && isPackageAccess(m.getDeclaringClass().getModifiers())) {
      try {
        o.setAccessible(true);
      } catch (SecurityException e) { // NOPMD
        // ignore in favor of subsequent IllegalAccessException
      }
    }
  }

  /**
   * Returns whether a given set of modifiers implies package access.
   * @param modifiers to test
   * @return true unless package/protected/private modifier detected
   */
  static boolean isPackageAccess(int modifiers) {
    return (modifiers & ACCESS_TEST) == 0;
  }
}
