content: /* 
   * Kodkod -- Copyright (c) 2005-present, Emina Torlak
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  package kodkod.util.ints;
  
  
  /**
   * An iterator over integer primitives. 
   * 
   * @author Emina Torlak
   */
  public interface IntIterator  {
  
  	/**
  	 * Returns true if this iteration has more elements.
  	 * @return true if this iteration has more elements.
  	 */
  	public abstract boolean hasNext();
  	
  	/**
  	 * Returns the next int in the iteration, if any.
  	 * Otherwise throws a NoSuchElementException.
  	 * @return the next element in the iteration
  	 * @throws java.util.NoSuchElementException  the iteration is empty. 
  	 */
  	public abstract int next();
  	
  	/**
  	 * Removes the last returned element from the underlying collection.
  	 * @ensures removes the last returned element from the underlying collection.
  	 * @throws UnsupportedOperationException  removal is not supported
  	 * @throws IllegalStateException  next() has not been called yet or remove()
  	 * has already been called since the last call to next().
  	 */
  	public abstract void remove();
  	
  }
  