content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.
   */
  package com.kuro.whale.xposed;
  
  import java.lang.reflect.Method;
  import java.lang.reflect.Modifier;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.LinkedHashSet;
  import java.util.List;
  
  /**
   * <p>Operates on classes without using reflection.</p>
   * <p>
   * <p>This class handles invalid {@code null} inputs as best it can.
   * Each method documents its behaviour in more detail.</p>
   * <p>
   * <p>The notion of a {@code canonical name} includes the human
   * readable name for the type, for example {@code int[]}. The
   * non-canonical method variants work with the JVM names, such as
   * {@code [I}. </p>
   *
   * @version $Id: ClassUtils.java 1199894 2011-11-09 17:53:59Z ggregory $
   * @since 2.0
   */
  @SuppressWarnings("all")
  public class ClassUtils {
      static final class StringUtils {
          static final String EMPTY = "";
          // Delete
          //-----------------------------------------------------------------------
  
          /**
           * <p>Deletes all whitespaces from a String as defined by
           * {@link Character#isWhitespace(char)}.</p>
           * <p>
           * <pre>
           * StringUtils.deleteWhitespace(null)         = null
           * StringUtils.deleteWhitespace("")           = ""
           * StringUtils.deleteWhitespace("abc")        = "abc"
           * StringUtils.deleteWhitespace("   ab  c  ") = "abc"
           * </pre>
           *
           * @param str the String to delete whitespace from, may be null
           * @return the String without whitespaces, {@code null} if null String input
           */
          public static String deleteWhitespace(final String str) {
              if (str == null || str.isEmpty()) {
                  return str;
              }
              int sz = str.length();
              char[] chs = new char[sz];
              int count = 0;
              for (int i = 0; i < sz; i++) {
                  if (!Character.isWhitespace(str.charAt(i))) {
                      chs[count++] = str.charAt(i);
                  }
              }
              if (count == sz) {
                  return str;
              }
              return new String(chs, 0, count);
          }
      }
  
      static final class ArrayUtils {
          /**
           * An empty immutable {@code Class} array.
           */
          static final Class<?>[] EMPTY_CLASS_ARRAY = new Class[0];
  
          // Is same length
          //-----------------------------------------------------------------------
  
          /**
           * <p>Checks whether two arrays are the same length, treating
           * {@code null} arrays as length {@code 0}.
           * <p>
           * <p>Any multi-dimensional aspects of the arrays are ignored.</p>
           *
           * @param array1 the first array, may be {@code null}
           * @param array2 the second array, may be {@code null}
           * @return {@code true} if length of arrays matches, treating
           * {@code null} as an empty array
           */
          public static boolean isSameLength(final Object[] array1, final Object[] array2) {
              if ((array1 == null && array2 != null && array2.length > 0) ||
                      (array2 == null && array1 != null && array1.length > 0) ||
                      (array1 != null && array2 != null && array1.length != array2.length)) {
                  return false;
              }
              return true;
          }
      }
  
      /**
       * <p>The package separator character: <code>'&#x2e;' == {@value}</code>.</p>
       */
      public static final char PACKAGE_SEPARATOR_CHAR = '.';
  
      /**
       * <p>The package separator String: {@code "&#x2e;"}.</p>
       */
      public static final String PACKAGE_SEPARATOR = String.valueOf(PACKAGE_SEPARATOR_CHAR);
  
      /**
       * <p>The inner class separator character: <code>'$' == {@value}</code>.</p>
       */
      public static final char INNER_CLASS_SEPARATOR_CHAR = '$';
  
      /**
       * <p>The inner class separator String: {@code "$"}.</p>
       */
      public static final String INNER_CLASS_SEPARATOR = String.valueOf(INNER_CLASS_SEPARATOR_CHAR);
  
      /**
       * Maps primitive {@code Class}es to their corresponding wrapper {@code Class}.
       */
      private static final HashMap<Class<?>, Class<?>> primitiveWrapperMap = new HashMap<Class<?>, Class<?>>();
  
      static {
          primitiveWrapperMap.put(Boolean.TYPE, Boolean.class);
          primitiveWrapperMap.put(Byte.TYPE, Byte.class);
          primitiveWrapperMap.put(Character.TYPE, Character.class);
          primitiveWrapperMap.put(Short.TYPE, Short.class);
          primitiveWrapperMap.put(Integer.TYPE, Integer.class);
          primitiveWrapperMap.put(Long.TYPE, Long.class);
          primitiveWrapperMap.put(Double.TYPE, Double.class);
          primitiveWrapperMap.put(Float.TYPE, Float.class);
          primitiveWrapperMap.put(Void.TYPE, Void.TYPE);
      }
  
      /**
       * Maps wrapper {@code Class}es to their corresponding primitive types.
       */
      private static final HashMap<Class<?>, Class<?>> wrapperPrimitiveMap = new HashMap<Class<?>, Class<?>>();
  
      static {
          for (final Class<?> primitiveClass : primitiveWrapperMap.keySet()) {
              final Class<?> wrapperClass = primitiveWrapperMap.get(primitiveClass);
              if (!primitiveClass.equals(wrapperClass)) {
                  wrapperPrimitiveMap.put(wrapperClass, primitiveClass);
              }
          }
      }
  
      /**
       * Maps a primitive class name to its corresponding abbreviation used in array class names.
       */
      private static final HashMap<String, String> abbreviationMap = new HashMap<String, String>();
  
      /**
       * Maps an abbreviation used in array class names to corresponding primitive class name.
       */
      private static final HashMap<String, String> reverseAbbreviationMap = new HashMap<String, String>();
  
      /**
       * Add primitive type abbreviation to maps of abbreviations.
       *
       * @param primitive    Canonical name of primitive type
       * @param abbreviation Corresponding abbreviation of primitive type
       */
      private static void addAbbreviation(String primitive, String abbreviation) {
          abbreviationMap.put(primitive, abbreviation);
          reverseAbbreviationMap.put(abbreviation, primitive);
      }
  
      /**
       * Feed abbreviation maps
       */
      static {
          addAbbreviation("int", "I");
          addAbbreviation("boolean", "Z");
          addAbbreviation("float", "F");
          addAbbreviation("long", "J");
          addAbbreviation("short", "S");
          addAbbreviation("byte", "B");
          addAbbreviation("double", "D");
          addAbbreviation("char", "C");
      }
  
      /**
       * <p>ClassUtils instances should NOT be constructed in standard programming.
       * Instead, the class should be used as
       * {@code ClassUtils.getShortClassName(cls)}.</p>
       * <p>
       * <p>This constructor is public to permit tools that require a JavaBean
       * instance to operate.</p>
       */
      public ClassUtils() {
          super();
      }
  
      // Short class name
      // ----------------------------------------------------------------------
  
      /**
       * <p>Gets the class name minus the package name for an {@code Object}.</p>
       *
       * @param object      the class to get the short name for, may be null
       * @param valueIfNull the value to return if null
       * @return the class name of the object without the package name, or the null value
       */
      public static String getShortClassName(Object object, String valueIfNull) {
          if (object == null) {
              return valueIfNull;
          }
          return getShortClassName(object.getClass());
      }
  
      /**
       * <p>Gets the class name minus the package name from a {@code Class}.</p>
       * <p>
       * <p>Consider using the Java 5 API {@link Class#getSimpleName()} instead.
       * The one known difference is that this code will return {@code "Map.Entry"} while
       * the {@code java.lang.Class} variant will simply return {@code "Entry"}. </p>
       *
       * @param cls the class to get the short name for.
       * @return the class name without the package name or an empty string
       */
      public static String getShortClassName(final Class<?> cls) {
          if (cls == null) {
              return StringUtils.EMPTY;
          }
          return getShortClassName(cls.getName());
      }
  
      /**
       * <p>Gets the class name minus the package name from a String.</p>
       * <p>
       * <p>The string passed in is assumed to be a class name - it is not checked.</p>
       * <p>
       * <p>Note that this method differs from Class.getSimpleName() in that this will
       * return {@code "Map.Entry"} whilst the {@code java.lang.Class} variant will simply
       * return {@code "Entry"}. </p>
       *
       * @param className the className to get the short name for
       * @return the class name of the class without the package name or an empty string
       */
      public static String getShortClassName(String className) {
          if (className == null) {
              return StringUtils.EMPTY;
          }
          if (className.length() == 0) {
              return StringUtils.EMPTY;
          }
  
          StringBuilder arrayPrefix = new StringBuilder();
  
          // Handle array encoding
          if (className.startsWith("[")) {
              while (className.charAt(0) == '[') {
                  className = className.substring(1);
                  arrayPrefix.append("[]");
              }
              // Strip Object type encoding
              if (className.charAt(0) == 'L' && className.charAt(className.length() - 1) == ';') {
                  className = className.substring(1, className.length() - 1);
              }
          }
  
          if (reverseAbbreviationMap.containsKey(className)) {
              className = reverseAbbreviationMap.get(className);
          }
  
          int lastDotIdx = className.lastIndexOf(PACKAGE_SEPARATOR_CHAR);
          int innerIdx = className.indexOf(
                  INNER_CLASS_SEPARATOR_CHAR, lastDotIdx == -1 ? 0 : lastDotIdx + 1);
          String out = className.substring(lastDotIdx + 1);
          if (innerIdx != -1) {
              out = out.replace(INNER_CLASS_SEPARATOR_CHAR, PACKAGE_SEPARATOR_CHAR);
          }
          return out + arrayPrefix;
      }
  
      /**
       * <p>Null-safe version of <code>aClass.getSimpleName()</code></p>
       *
       * @param cls the class for which to get the simple name.
       * @return the simple class name.
       * @see Class#getSimpleName()
       * @since 3.0
       */
      public static String getSimpleName(final Class<?> cls) {
          if (cls == null) {
              return StringUtils.EMPTY;
          }
          return cls.getSimpleName();
      }
  
      /**
       * <p>Null-safe version of <code>aClass.getSimpleName()</code></p>
       *
       * @param object      the object for which to get the simple class name.
       * @param valueIfNull the value to return if <code>object</code> is <code>null</code>
       * @return the simple class name.
       * @see Class#getSimpleName()
       * @since 3.0
       */
      public static String getSimpleName(Object object, String valueIfNull) {
          if (object == null) {
              return valueIfNull;
          }
          return getSimpleName(object.getClass());
      }
  
      // Package name
      // ----------------------------------------------------------------------
  
      /**
       * <p>Gets the package name of an {@code Object}.</p>
       *
       * @param object      the class to get the package name for, may be null
       * @param valueIfNull the value to return if null
       * @return the package name of the object, or the null value
       */
      public static String getPackageName(Object object, String valueIfNull) {
          if (object == null) {
              return valueIfNull;
          }
          return getPackageName(object.getClass());
      }
  
      /**
       * <p>Gets the package name of a {@code Class}.</p>
       *
       * @param cls the class to get the package name for, may be {@code null}.
       * @return the package name or an empty string
       */
      public static String getPackageName(final Class<?> cls) {
          if (cls == null) {
              return StringUtils.EMPTY;
          }
          return getPackageName(cls.getName());
      }
  
      /**
       * <p>Gets the package name from a {@code String}.</p>
       * <p>
       * <p>The string passed in is assumed to be a class name - it is not checked.</p>
       * <p>If the class is unpackaged, return an empty string.</p>
       *
       * @param className the className to get the package name for, may be {@code null}
       * @return the package name or an empty string
       */
      public static String getPackageName(String className) {
          if (className == null || className.length() == 0) {
              return StringUtils.EMPTY;
          }
  
          // Strip array encoding
          while (className.charAt(0) == '[') {
              className = className.substring(1);
          }
          // Strip Object type encoding
          if (className.charAt(0) == 'L' && className.charAt(className.length() - 1) == ';') {
              className = className.substring(1);
          }
  
          int i = className.lastIndexOf(PACKAGE_SEPARATOR_CHAR);
          if (i == -1) {
              return StringUtils.EMPTY;
          }
          return className.substring(0, i);
      }
  
      // Superclasses/Superinterfaces
      // ----------------------------------------------------------------------
  
      /**
       * <p>Gets a {@code List} of superclasses for the given class.</p>
       *
       * @param cls the class to look up, may be {@code null}
       * @return the {@code List} of superclasses in order going up from this one
       * {@code null} if null input
       */
      public static ArrayList<Class<?>> getAllSuperclasses(final Class<?> cls) {
          if (cls == null) return null;
  
          final ArrayList<Class<?>> classes = new ArrayList<Class<?>>();
          Class<?> superclass = cls.getSuperclass();
          while (superclass != null) {
              classes.add(superclass);
              superclass = superclass.getSuperclass();
          }
          return classes;
      }
  
      /**
       * <p>Gets a {@code List} of all interfaces implemented by the given
       * class and its superclasses.</p>
       * <p>
       * <p>The order is determined by looking through each interface in turn as
       * declared in the source file and following its hierarchy up. Then each
       * superclass is considered in the same way. Later duplicates are ignored,
       * so the order is maintained.</p>
       *
       * @param cls the class to look up, may be {@code null}
       * @return the {@code List} of interfaces in order,
       * {@code null} if null input
       */
      public static ArrayList<Class<?>> getAllInterfaces(final Class<?> cls) {
          if (cls == null) return null;
  
          final LinkedHashSet<Class<?>> interfacesFound = new LinkedHashSet<Class<?>>();
          getAllInterfaces(cls, interfacesFound);
  
          return new ArrayList<Class<?>>(interfacesFound);
      }
  
      /**
       * Get the interfaces for the specified class.
       *
       * @param cls             the class to look up, may be {@code null}
       * @param interfacesFound the {@code Set} of interfaces for the class
       */
      private static void getAllInterfaces(Class<?> cls, final HashSet<Class<?>> interfacesFound) {
          while (cls != null) {
              final Class<?>[] interfaces = cls.getInterfaces();
  
              for (final Class<?> i : interfaces) {
                  if (interfacesFound.add(i)) {
                      getAllInterfaces(i, interfacesFound);
                  }
              }
  
              cls = cls.getSuperclass();
          }
      }
  
      // Convert list
      // ----------------------------------------------------------------------
  
      /**
       * <p>Given a {@code List} of class names, this method converts them into classes.</p>
       * <p>
       * <p>A new {@code List} is returned. If the class name cannot be found, {@code null}
       * is stored in the {@code List}. If the class name in the {@code List} is
       * {@code null}, {@code null} is stored in the output {@code List}.</p>
       *
       * @param classNames the classNames to change
       * @return a {@code List} of Class objects corresponding to the class names,
       * {@code null} if null input
       * @throws ClassCastException if classNames contains a non String entry
       */
      public static ArrayList<Class<?>> convertClassNamesToClasses(final List<String> classNames) {
          if (classNames == null) return null;
  
          final ArrayList<Class<?>> classes = new ArrayList<Class<?>>(classNames.size());
          for (final String className : classNames) {
              try {
                  classes.add(Class.forName(className));
              } catch (final Exception ex) {
                  classes.add(null);
              }
          }
          return classes;
      }
  
      /**
       * <p>Given a {@code List} of {@code Class} objects, this method converts
       * them into class names.</p>
       * <p>
       * <p>A new {@code List} is returned. {@code null} objects will be copied into
       * the returned list as {@code null}.</p>
       *
       * @param classes the classes to change
       * @return a {@code List} of class names corresponding to the Class objects,
       * {@code null} if null input
       * @throws ClassCastException if {@code classes} contains a non-{@code Class} entry
       */
      public static List<String> convertClassesToClassNames(List<Class<?>> classes) {
          if (classes == null) return null;
  
          final ArrayList<String> classNames = new ArrayList<String>(classes.size());
          for (final Class<?> cls : classes) {
              if (cls == null) {
                  classNames.add(null);
              } else {
                  classNames.add(cls.getName());
              }
          }
          return classNames;
      }
  
      // Is assignable
      // ----------------------------------------------------------------------
  
      /**
       * <p>Checks if an array of Classes can be assigned to another array of Classes.</p>
       * <p>
       * <p>This method calls {@link #isAssignable(Class, Class) isAssignable} for each
       * Class pair in the input arrays. It can be used to check if a set of arguments
       * (the first parameter) are suitably compatible with a set of method parameter types
       * (the second parameter).</p>
       * <p>
       * <p>Unlike the {@link Class#isAssignableFrom(Class)} method, this
       * method takes into account widenings of primitive classes and
       * {@code null}s.</p>
       * <p>
       * <p>Primitive widenings allow an int to be assigned to a {@code long},
       * {@code float} or {@code double}. This method returns the correct
       * result for these cases.</p>
       * <p>
       * <p>{@code Null} may be assigned to any reference type. This method will
       * return {@code true} if {@code null} is passed in and the toClass is
       * non-primitive.</p>
       * <p>
       * <p>Specifically, this method tests whether the type represented by the
       * specified {@code Class} parameter can be converted to the type
       * represented by this {@code Class} object via an identity conversion
       * widening primitive or widening reference conversion. See
       * <em><a href="http://java.sun.com/docs/books/jls/">The Java Language Specification</a></em>,
       * sections 5.1.1, 5.1.2 and 5.1.4 for details.</p>
       * <p>
       * <p><strong>Since Lang 3.0,</strong> this method will default behavior for
       * calculating assignability between primitive and wrapper types <em>corresponding
       * to the running Java version</em>; i.e. autoboxing will be the default
       * behavior in VMs running Java versions >= 1.5.</p>
       *
       * @param classArray   the array of Classes to check, may be {@code null}
       * @param toClassArray the array of Classes to try to assign into, may be {@code null}
       * @return {@code true} if assignment possible
       */
      private static final boolean SystemUtils_isJavaVersionAtLeast_JavaVersion_JAVA_1_5 = true;
  
      public static boolean isAssignable(final Class<?>[] classArray, final Class<?>... toClassArray) {
          return isAssignable(classArray, toClassArray, SystemUtils_isJavaVersionAtLeast_JavaVersion_JAVA_1_5);
      }
  
      /**
       * <p>Checks if an array of Classes can be assigned to another array of Classes.</p>
       * <p>
       * <p>This method calls {@link #isAssignable(Class, Class) isAssignable} for each
       * Class pair in the input arrays. It can be used to check if a set of arguments
       * (the first parameter) are suitably compatible with a set of method parameter types
       * (the second parameter).</p>
       * <p>
       * <p>Unlike the {@link Class#isAssignableFrom(Class)} method, this
       * method takes into account widenings of primitive classes and
       * {@code null}s.</p>
       * <p>
       * <p>Primitive widenings allow an int to be assigned to a {@code long},
       * {@code float} or {@code double}. This method returns the correct
       * result for these cases.</p>
       * <p>
       * <p>{@code Null} may be assigned to any reference type. This method will
       * return {@code true} if {@code null} is passed in and the toClass is
       * non-primitive.</p>
       * <p>
       * <p>Specifically, this method tests whether the type represented by the
       * specified {@code Class} parameter can be converted to the type
       * represented by this {@code Class} object via an identity conversion
       * widening primitive or widening reference conversion. See
       * <em><a href="http://java.sun.com/docs/books/jls/">The Java Language Specification</a></em>,
       * sections 5.1.1, 5.1.2 and 5.1.4 for details.</p>
       *
       * @param classArray   the array of Classes to check, may be {@code null}
       * @param toClassArray the array of Classes to try to assign into, may be {@code null}
       * @param autoboxing   whether to use implicit autoboxing/unboxing between primitives and wrappers
       * @return {@code true} if assignment possible
       */
      public static boolean isAssignable(Class<?>[] classArray, Class<?>[] toClassArray, boolean autoboxing) {
          if (ArrayUtils.isSameLength(classArray, toClassArray) == false) {
              return false;
          }
          if (classArray == null) {
              classArray = ArrayUtils.EMPTY_CLASS_ARRAY;
          }
          if (toClassArray == null) {
              toClassArray = ArrayUtils.EMPTY_CLASS_ARRAY;
          }
          for (int i = 0; i < classArray.length; i++) {
              if (isAssignable(classArray[i], toClassArray[i], autoboxing) == false) {
                  return false;
              }
          }
          return true;
      }
  
      /**
       * Returns whether the given {@code type} is a primitive or primitive wrapper ({@link Boolean}, {@link Byte}, {@link Character},
       * {@link Short}, {@link Integer}, {@link Long}, {@link Double}, {@link Float}).
       *
       * @param type The class to query or null.
       * @return true if the given {@code type} is a primitive or primitive wrapper ({@link Boolean}, {@link Byte}, {@link Character},
       * {@link Short}, {@link Integer}, {@link Long}, {@link Double}, {@link Float}).
       * @since 3.1
       */
      public static boolean isPrimitiveOrWrapper(final Class<?> type) {
          if (type == null) {
              return false;
          }
          return type.isPrimitive() || isPrimitiveWrapper(type);
      }
  
      /**
       * Returns whether the given {@code type} is a primitive wrapper ({@link Boolean}, {@link Byte}, {@link Character}, {@link Short},
       * {@link Integer}, {@link Long}, {@link Double}, {@link Float}).
       *
       * @param type The class to query or null.
       * @return true if the given {@code type} is a primitive wrapper ({@link Boolean}, {@link Byte}, {@link Character}, {@link Short},
       * {@link Integer}, {@link Long}, {@link Double}, {@link Float}).
       * @since 3.1
       */
      public static boolean isPrimitiveWrapper(final Class<?> type) {
          return wrapperPrimitiveMap.containsKey(type);
      }
  
      /**
       * <p>Checks if one {@code Class} can be assigned to a variable of
       * another {@code Class}.</p>
       * <p>
       * <p>Unlike the {@link Class#isAssignableFrom(Class)} method,
       * this method takes into account widenings of primitive classes and
       * {@code null}s.</p>
       * <p>
       * <p>Primitive widenings allow an int to be assigned to a long, float or
       * double. This method returns the correct result for these cases.</p>
       * <p>
       * <p>{@code Null} may be assigned to any reference type. This method
       * will return {@code true} if {@code null} is passed in and the
       * toClass is non-primitive.</p>
       * <p>
       * <p>Specifically, this method tests whether the type represented by the
       * specified {@code Class} parameter can be converted to the type
       * represented by this {@code Class} object via an identity conversion
       * widening primitive or widening reference conversion. See
       * <em><a href="http://java.sun.com/docs/books/jls/">The Java Language Specification</a></em>,
       * sections 5.1.1, 5.1.2 and 5.1.4 for details.</p>
       * <p>
       * <p><strong>Since Lang 3.0,</strong> this method will default behavior for
       * calculating assignability between primitive and wrapper types <em>corresponding
       * to the running Java version</em>; i.e. autoboxing will be the default
       * behavior in VMs running Java versions >= 1.5.</p>
       *
       * @param cls     the Class to check, may be null
       * @param toClass the Class to try to assign into, returns false if null
       * @return {@code true} if assignment possible
       */
      public static boolean isAssignable(final Class<?> cls, Class<?> toClass) {
          return isAssignable(cls, toClass, SystemUtils_isJavaVersionAtLeast_JavaVersion_JAVA_1_5);
      }
  
      /**
       * <p>Checks if one {@code Class} can be assigned to a variable of
       * another {@code Class}.</p>
       * <p>
       * <p>Unlike the {@link Class#isAssignableFrom(Class)} method,
       * this method takes into account widenings of primitive classes and
       * {@code null}s.</p>
       * <p>
       * <p>Primitive widenings allow an int to be assigned to a long, float or
       * double. This method returns the correct result for these cases.</p>
       * <p>
       * <p>{@code Null} may be assigned to any reference type. This method
       * will return {@code true} if {@code null} is passed in and the
       * toClass is non-primitive.</p>
       * <p>
       * <p>Specifically, this method tests whether the type represented by the
       * specified {@code Class} parameter can be converted to the type
       * represented by this {@code Class} object via an identity conversion
       * widening primitive or widening reference conversion. See
       * <em><a href="http://java.sun.com/docs/books/jls/">The Java Language Specification</a></em>,
       * sections 5.1.1, 5.1.2 and 5.1.4 for details.</p>
       *
       * @param cls        the Class to check, may be null
       * @param toClass    the Class to try to assign into, returns false if null
       * @param autoboxing whether to use implicit autoboxing/unboxing between primitives and wrappers
       * @return {@code true} if assignment possible
       */
      public static boolean isAssignable(Class<?> cls, final Class<?> toClass, final boolean autoboxing) {
          if (toClass == null) {
              return false;
          }
          // have to check for null, as isAssignableFrom doesn't
          if (cls == null) {
              return !toClass.isPrimitive();
          }
          //autoboxing:
          if (autoboxing) {
              if (cls.isPrimitive() && !toClass.isPrimitive()) {
                  cls = primitiveToWrapper(cls);
                  if (cls == null) {
                      return false;
                  }
              }
              if (toClass.isPrimitive() && !cls.isPrimitive()) {
                  cls = wrapperToPrimitive(cls);
                  if (cls == null) {
                      return false;
                  }
              }
          }
          if (cls.equals(toClass)) {
              return true;
          }
          if (cls.isPrimitive()) {
              if (toClass.isPrimitive() == false) {
                  return false;
              }
              if (Integer.TYPE.equals(cls)) {
                  return Long.TYPE.equals(toClass)
                          || Float.TYPE.equals(toClass)
                          || Double.TYPE.equals(toClass);
              }
              if (Long.TYPE.equals(cls)) {
                  return Float.TYPE.equals(toClass)
                          || Double.TYPE.equals(toClass);
              }
              if (Boolean.TYPE.equals(cls)) {
                  return false;
              }
              if (Double.TYPE.equals(cls)) {
                  return false;
              }
              if (Float.TYPE.equals(cls)) {
                  return Double.TYPE.equals(toClass);
              }
              if (Character.TYPE.equals(cls)) {
                  return Integer.TYPE.equals(toClass)
                          || Long.TYPE.equals(toClass)
                          || Float.TYPE.equals(toClass)
                          || Double.TYPE.equals(toClass);
              }
              if (Short.TYPE.equals(cls)) {
                  return Integer.TYPE.equals(toClass)
                          || Long.TYPE.equals(toClass)
                          || Float.TYPE.equals(toClass)
                          || Double.TYPE.equals(toClass);
              }
              if (Byte.TYPE.equals(cls)) {
                  return Short.TYPE.equals(toClass)
                          || Integer.TYPE.equals(toClass)
                          || Long.TYPE.equals(toClass)
                          || Float.TYPE.equals(toClass)
                          || Double.TYPE.equals(toClass);
              }
              // should never get here
              return false;
          }
          return toClass.isAssignableFrom(cls);
      }
  
      /**
       * <p>Converts the specified primitive Class object to its corresponding
       * wrapper Class object.</p>
       * <p>
       * <p>NOTE: From v2.2, this method handles {@code Void.TYPE},
       * returning {@code Void.TYPE}.</p>
       *
       * @param cls the class to convert, may be null
       * @return the wrapper class for {@code cls} or {@code cls} if
       * {@code cls} is not a primitive. {@code null} if null input.
       * @since 2.1
       */
      public static Class<?> primitiveToWrapper(final Class<?> cls) {
          Class<?> convertedClass = cls;
          if (cls != null && cls.isPrimitive()) {
              convertedClass = primitiveWrapperMap.get(cls);
          }
          return convertedClass;
      }
  
      /**
       * <p>Converts the specified array of primitive Class objects to an array of
       * its corresponding wrapper Class objects.</p>
       *
       * @param classes the class array to convert, may be null or empty
       * @return an array which contains for each given class, the wrapper class or
       * the original class if class is not a primitive. {@code null} if null input.
       * Empty array if an empty array passed in.
       * @since 2.1
       */
      public static Class<?>[] primitivesToWrappers(Class<?>... classes) {
          if (classes == null) {
              return null;
          }
  
          if (classes.length == 0) {
              return classes;
          }
  
          Class<?>[] convertedClasses = new Class[classes.length];
          for (int i = 0; i < classes.length; i++) {
              convertedClasses[i] = primitiveToWrapper(classes[i]);
          }
          return convertedClasses;
      }
  
      /**
       * <p>Converts the specified wrapper class to its corresponding primitive
       * class.</p>
       * <p>
       * <p>This method is the counter part of {@code primitiveToWrapper()}.
       * If the passed in class is a wrapper class for a primitive type, this
       * primitive type will be returned (e.g. {@code Integer.TYPE} for
       * {@code Integer.class}). For other classes, or if the parameter is
       * <b>null</b>, the return value is <b>null</b>.</p>
       *
       * @param cls the class to convert, may be <b>null</b>
       * @return the corresponding primitive type if {@code cls} is a
       * wrapper class, <b>null</b> otherwise
       * @see #primitiveToWrapper(Class)
       * @since 2.4
       */
      public static Class<?> wrapperToPrimitive(final Class<?> cls) {
          return wrapperPrimitiveMap.get(cls);
      }
  
      /**
       * <p>Converts the specified array of wrapper Class objects to an array of
       * its corresponding primitive Class objects.</p>
       * <p>
       * <p>This method invokes {@code wrapperToPrimitive()} for each element
       * of the passed in array.</p>
       *
       * @param classes the class array to convert, may be null or empty
       * @return an array which contains for each given class, the primitive class or
       * <b>null</b> if the original class is not a wrapper class. {@code null} if null input.
       * Empty array if an empty array passed in.
       * @see #wrapperToPrimitive(Class)
       * @since 2.4
       */
      public static Class<?>[] wrappersToPrimitives(Class<?>... classes) {
          if (classes == null) {
              return null;
          }
  
          if (classes.length == 0) {
              return classes;
          }
  
          Class<?>[] convertedClasses = new Class[classes.length];
          for (int i = 0; i < classes.length; i++) {
              convertedClasses[i] = wrapperToPrimitive(classes[i]);
          }
          return convertedClasses;
      }
  
      // Inner class
      // ----------------------------------------------------------------------
  
      /**
       * <p>Is the specified class an inner class or static nested class.</p>
       *
       * @param cls the class to check, may be null
       * @return {@code true} if the class is an inner or static nested class,
       * false if not or {@code null}
       */
      public static boolean isInnerClass(final Class<?> cls) {
          return cls != null && cls.getEnclosingClass() != null;
      }
  
      // Class loading
      // ----------------------------------------------------------------------
  
      /**
       * Returns the class represented by {@code className} using the
       * {@code classLoader}.  This implementation supports the syntaxes
       * "{@code java.util.Map.Entry[]}", "{@code java.util.Map$Entry[]}",
       * "{@code [Ljava.util.Map.Entry;}", and "{@code [Ljava.util.Map$Entry;}".
       *
       * @param classLoader the class loader to use to load the class
       * @param className   the class name
       * @param initialize  whether the class must be initialized
       * @return the class represented by {@code className} using the {@code classLoader}
       * @throws ClassNotFoundException if the class is not found
       */
      public static Class<?> getClass(
              ClassLoader classLoader, String className, boolean initialize) throws ClassNotFoundException {
          try {
              Class<?> clazz;
              if (abbreviationMap.containsKey(className)) {
                  String clsName = "[" + abbreviationMap.get(className);
                  clazz = Class.forName(clsName, initialize, classLoader).getComponentType();
              } else {
                  clazz = Class.forName(toCanonicalName(className), initialize, classLoader);
              }
              return clazz;
          } catch (ClassNotFoundException ex) {
              // allow path separators (.) as inner class name separators
              int lastDotIndex = className.lastIndexOf(PACKAGE_SEPARATOR_CHAR);
  
              if (lastDotIndex != -1) {
                  try {
                      return getClass(classLoader, className.substring(0, lastDotIndex) +
                                      INNER_CLASS_SEPARATOR_CHAR + className.substring(lastDotIndex + 1),
                              initialize);
                  } catch (ClassNotFoundException ex2) { // NOPMD
                      // ignore exception
                  }
              }
  
              throw ex;
          }
      }
  
      /**
       * Returns the (initialized) class represented by {@code className}
       * using the {@code classLoader}.  This implementation supports
       * the syntaxes "{@code java.util.Map.Entry[]}",
       * "{@code java.util.Map$Entry[]}", "{@code [Ljava.util.Map.Entry;}",
       * and "{@code [Ljava.util.Map$Entry;}".
       *
       * @param classLoader the class loader to use to load the class
       * @param className   the class name
       * @return the class represented by {@code className} using the {@code classLoader}
       * @throws ClassNotFoundException if the class is not found
       */
      public static Class<?> getClass(ClassLoader classLoader, String className) throws ClassNotFoundException {
          return getClass(classLoader, className, true);
      }
  
      /**
       * Returns the (initialized) class represented by {@code className}
       * using the current thread's context class loader. This implementation
       * supports the syntaxes "{@code java.util.Map.Entry[]}",
       * "{@code java.util.Map$Entry[]}", "{@code [Ljava.util.Map.Entry;}",
       * and "{@code [Ljava.util.Map$Entry;}".
       *
       * @param className the class name
       * @return the class represented by {@code className} using the current thread's context class loader
       * @throws ClassNotFoundException if the class is not found
       */
      public static Class<?> getClass(String className) throws ClassNotFoundException {
          return getClass(className, true);
      }
  
      /**
       * Returns the class represented by {@code className} using the
       * current thread's context class loader. This implementation supports the
       * syntaxes "{@code java.util.Map.Entry[]}", "{@code java.util.Map$Entry[]}",
       * "{@code [Ljava.util.Map.Entry;}", and "{@code [Ljava.util.Map$Entry;}".
       *
       * @param className  the class name
       * @param initialize whether the class must be initialized
       * @return the class represented by {@code className} using the current thread's context class loader
       * @throws ClassNotFoundException if the class is not found
       */
      public static Class<?> getClass(String className, boolean initialize) throws ClassNotFoundException {
          ClassLoader contextCL = Thread.currentThread().getContextClassLoader();
          ClassLoader loader = contextCL == null ? ClassUtils.class.getClassLoader() : contextCL;
          return getClass(loader, className, initialize);
      }
  
      // Public method
      // ----------------------------------------------------------------------
  
      /**
       * <p>Returns the desired Method much like {@code Class.getMethod}, however
       * it ensures that the returned Method is from a public class or interface and not
       * from an anonymous inner class. This means that the Method is invokable and
       * doesn't fall foul of Java bug
       * <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4071957">4071957</a>).
       * <p>
       * <code><pre>Set set = Collections.unmodifiableSet(...);
       *  Method method = ClassUtils.getPublicMethod(set.getClass(), "isEmpty",  new Class[0]);
       *  Object result = method.invoke(set, new Object[]);</pre></code>
       * </p>
       *
       * @param cls            the class to check, not null
       * @param methodName     the name of the method
       * @param parameterTypes the list of parameters
       * @return the method
       * @throws NullPointerException  if the class is null
       * @throws SecurityException     if a a security violation occured
       * @throws NoSuchMethodException if the method is not found in the given class
       *                               or if the metothod doen't conform with the requirements
       */
      public static Method getPublicMethod(final Class<?> cls, String methodName, Class<?>... parameterTypes)
              throws SecurityException, NoSuchMethodException {
  
          Method declaredMethod = cls.getMethod(methodName, parameterTypes);
          if (Modifier.isPublic(declaredMethod.getDeclaringClass().getModifiers())) {
              return declaredMethod;
          }
  
          final ArrayList<Class<?>> candidateClasses = new ArrayList<Class<?>>();
          candidateClasses.addAll(getAllInterfaces(cls));
          candidateClasses.addAll(getAllSuperclasses(cls));
  
          for (final Class<?> candidateClass : candidateClasses) {
              if (!Modifier.isPublic(candidateClass.getModifiers())) {
                  continue;
              }
              Method candidateMethod;
              try {
                  candidateMethod = candidateClass.getMethod(methodName, parameterTypes);
              } catch (NoSuchMethodException ex) {
                  continue;
              }
              if (Modifier.isPublic(candidateMethod.getDeclaringClass().getModifiers())) {
                  return candidateMethod;
              }
          }
  
          throw new NoSuchMethodException("Can't find a public method for " +
                  methodName + " " + parameterTypes.toString());
      }
  
      // ----------------------------------------------------------------------
  
      /**
       * Converts a class name to a JLS style class name.
       *
       * @param className the class name
       * @return the converted name
       */
      private static String toCanonicalName(String className) {
          className = StringUtils.deleteWhitespace(className);
          if (className == null) {
              throw new NullPointerException("className must not be null.");
          } else if (className.endsWith("[]")) {
              StringBuilder classNameBuffer = new StringBuilder();
              while (className.endsWith("[]")) {
                  className = className.substring(0, className.length() - 2);
                  classNameBuffer.append("[");
              }
              String abbreviation = abbreviationMap.get(className);
              if (abbreviation != null) {
                  classNameBuffer.append(abbreviation);
              } else {
                  classNameBuffer.append("L").append(className).append(";");
              }
              className = classNameBuffer.toString();
          }
          return className;
      }
  
      /**
       * <p>Converts an array of {@code Object} in to an array of {@code Class} objects.
       * If any of these objects is null, a null element will be inserted into the array.</p>
       * <p>
       * <p>This method returns {@code null} for a {@code null} input array.</p>
       *
       * @param array an {@code Object} array
       * @return a {@code Class} array, {@code null} if null array input
       * @since 2.4
       */
      public static Class<?>[] toClass(Object... array) {
          if (array == null) {
              return null;
          } else if (array.length == 0) {
              return ArrayUtils.EMPTY_CLASS_ARRAY;
          }
          Class<?>[] classes = new Class[array.length];
          for (int i = 0; i < array.length; i++) {
              classes[i] = array[i] == null ? null : array[i].getClass();
          }
          return classes;
      }
  
      // Short canonical name
      // ----------------------------------------------------------------------
  
      /**
       * <p>Gets the canonical name minus the package name for an {@code Object}.</p>
       *
       * @param object      the class to get the short name for, may be null
       * @param valueIfNull the value to return if null
       * @return the canonical name of the object without the package name, or the null value
       * @since 2.4
       */
      public static String getShortCanonicalName(Object object, String valueIfNull) {
          if (object == null) {
              return valueIfNull;
          }
          return getShortCanonicalName(object.getClass().getName());
      }
  
      /**
       * <p>Gets the canonical name minus the package name from a {@code Class}.</p>
       *
       * @param cls the class to get the short name for.
       * @return the canonical name without the package name or an empty string
       * @since 2.4
       */
      public static String getShortCanonicalName(final Class<?> cls) {
          if (cls == null) {
              return StringUtils.EMPTY;
          }
          return getShortCanonicalName(cls.getName());
      }
  
      /**
       * <p>Gets the canonical name minus the package name from a String.</p>
       * <p>
       * <p>The string passed in is assumed to be a canonical name - it is not checked.</p>
       *
       * @param canonicalName the class name to get the short name for
       * @return the canonical name of the class without the package name or an empty string
       * @since 2.4
       */
      public static String getShortCanonicalName(String canonicalName) {
          return ClassUtils.getShortClassName(getCanonicalName(canonicalName));
      }
  
      // Package name
      // ----------------------------------------------------------------------
  
      /**
       * <p>Gets the package name from the canonical name of an {@code Object}.</p>
       *
       * @param object      the class to get the package name for, may be null
       * @param valueIfNull the value to return if null
       * @return the package name of the object, or the null value
       * @since 2.4
       */
      public static String getPackageCanonicalName(Object object, String valueIfNull) {
          if (object == null) {
              return valueIfNull;
          }
          return getPackageCanonicalName(object.getClass().getName());
      }
  
      /**
       * <p>Gets the package name from the canonical name of a {@code Class}.</p>
       *
       * @param cls the class to get the package name for, may be {@code null}.
       * @return the package name or an empty string
       * @since 2.4
       */
      public static String getPackageCanonicalName(final Class<?> cls) {
          if (cls == null) {
              return StringUtils.EMPTY;
          }
          return getPackageCanonicalName(cls.getName());
      }
  
      /**
       * <p>Gets the package name from the canonical name. </p>
       * <p>
       * <p>The string passed in is assumed to be a canonical name - it is not checked.</p>
       * <p>If the class is unpackaged, return an empty string.</p>
       *
       * @param canonicalName the canonical name to get the package name for, may be {@code null}
       * @return the package name or an empty string
       * @since 2.4
       */
      public static String getPackageCanonicalName(final String canonicalName) {
          return ClassUtils.getPackageName(getCanonicalName(canonicalName));
      }
  
      /**
       * <p>Converts a given name of class into canonical format.
       * If name of class is not a name of array class it returns
       * unchanged name.</p>
       * <p>Example:
       * <ul>
       * <li>{@code getCanonicalName("[I") = "int[]"}</li>
       * <li>{@code getCanonicalName("[Ljava.lang.String;") = "java.lang.String[]"}</li>
       * <li>{@code getCanonicalName("java.lang.String") = "java.lang.String"}</li>
       * </ul>
       * </p>
       *
       * @param className the name of class
       * @return canonical form of class name
       * @since 2.4
       */
      private static String getCanonicalName(String className) {
          className = StringUtils.deleteWhitespace(className);
          if (className == null) {
              return null;
          } else {
              int dim = 0;
              while (className.startsWith("[")) {
                  dim++;
                  className = className.substring(1);
              }
              if (dim < 1) {
                  return className;
              } else {
                  if (className.startsWith("L")) {
                      className = className.substring(
                              1,
                              className.endsWith(";")
                                      ? className.length() - 1
                                      : className.length());
                  } else {
                      if (className.length() > 0) {
                          className = reverseAbbreviationMap.get(className.substring(0, 1));
                      }
                  }
                  final StringBuilder canonicalClassNameBuffer = new StringBuilder(className);
                  for (int i = 0; i < dim; ++i) {
                      canonicalClassNameBuffer.append("[]");
                  }
                  return canonicalClassNameBuffer.toString();
              }
          }
      }
  
  }
  