All Downloads are FREE. Search and download functionalities are using the official Maven repository.

gate.util.SimpleArraySet Maven / Gradle / Ivy

Go to download

GATE - general achitecture for text engineering - is open source software capable of solving almost any text processing problem. This artifact enables you to embed the core GATE Embedded with its essential dependencies. You will able to use the GATE Embedded API and load and store GATE XML documents. This artifact is the perfect dependency for CREOLE plugins or for applications that need to customize the GATE dependencies due to confict with their own dependencies or for lower footprint.

The newest version!
/*
 *  SimpleArraySet.java
 *
 *  Copyright (c) 2001, The University of Sheffield.
 *
 *  This file is part of GATE (see http://gate.ac.uk/), and is free
 *  software, licenced under the GNU Library General Public License,
 *  Version 2, June 1991 (in the distribution as file licence.html,
 *  and also available at http://gate.ac.uk/gate/licence.html).
 *
 *   D.Ognyanoff, 5/Nov/2001
 *
 *  $Id: SimpleArraySet.java 17600 2014-03-08 18:47:11Z markagreenwood $
 */


package gate.util;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.NoSuchElementException;


/**
 * A specific *partial* implementation of the Set interface used for
 * high performance and memory reduction on small sets. Used in
 * gate.fsm.State, for example
 */
public class SimpleArraySet implements Serializable, Iterable
{

  private static final long serialVersionUID = 7356655846408155644L;

  /**
   * The array storing the elements
   */
  T[] theArray = null;

  public int size()
  {
      return theArray == null ? 0 : theArray.length;
  }

  public Collection asCollection()
  {
      if (theArray == null) return new ArrayList();
      return Arrays.asList(theArray);
  }

  @SuppressWarnings("unchecked")
  public boolean add(T tr)
  {
    if (theArray == null)
    {
      theArray = (T[])new Object[1];
      theArray[0] = tr;
    } else {
      int newsz = theArray.length+1;
      int index = java.util.Arrays.binarySearch(theArray, tr);
      if (index < 0)
      {
        index = ~index;
        T[] temp = (T[])new Object[newsz];
        int i;
        for (i = 0; i < index; i++)
        {
          temp[i] = theArray[i]; theArray[i] = null;
        }
        for (i = index+1; i iterator()
  {
    if (theArray == null)
      return new java.util.Iterator()
        {
          @Override
          public boolean hasNext() {return false;}
          @Override
          public T next() { throw new NoSuchElementException("the array is empty"); }
          @Override
          public void remove() {}
        };
    else
      return new java.util.Iterator()
        {
          int count = 0;
          @Override
          public boolean hasNext()
          {
            if (theArray == null)
              throw new RuntimeException("");
            return count < theArray.length;
          }
          @Override
          public T next() {
            if (theArray == null)
              throw new NoSuchElementException("the array is empty");
            return theArray[count++];
          }
          @Override
          public void remove() {}
        }; // anonymous iterator
  } // iterator

} // SimpleArraySet




© 2015 - 2024 Weber Informatics LLC | Privacy Policy