content: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * 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.
   */
  
  package com.taobao.android.dx.util;
  
  /**
   * A set of integers
   */
  public interface IntSet {
  
      /**
       * Adds an int to a set
       *
       * @param value int to add
       */
      void add(int value);
  
      /**
       * Removes an int from a set.
       *
       * @param value int to remove
       */
      void remove(int value);
  
      /**
       * Checks to see if a value is in the set
       *
       * @param value int to check
       * @return true if in set
       */
      boolean has(int value);
  
      /**
       * Merges {@code other} into this set, so this set becomes the
       * union of the two.
       *
       * @param other {@code non-null;} other set to merge with.
       */
      void merge(IntSet other);
  
      /**
       * Returns the count of unique elements in this set.
       *
       * @return {@code > = 0;} count of unique elements
       */
      int elements();
  
      /**
       * Iterates the set
       *
       * @return {@code non-null;} a set iterator
       */
      IntIterator iterator();
  }
  