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package com.techempower.js.legacy;

import java.lang.reflect.*;

/**
 * Makes visitors for arrays.
 */
enum ArrayVisitorFactory implements VisitorFactory
{
  INSTANCE;

  @Override
  public Visitor visitor(Object object)
  {
    if (object == null || !object.getClass().isArray())
    {
      throw new IllegalArgumentException("Argument is not an array.");
    }
    return new ArrayVisitor(object);
  }

  /**
   * The Array Visitor implementation.
   */
  private static final class ArrayVisitor implements Visitor
  {
    private final Object array;
    private final int length;
    private int index = -1;

    private ArrayVisitor(Object array)
    {
      this.array = array;
      this.length = Array.getLength(array);
    }

    @Override
    public boolean hasNext()
    {
      return this.index < this.length - 1;
    }

    @Override
    public boolean isArray()
    {
      return true;
    }

    @Override
    public void next()
    {
      this.index++;
    }

    @Override
    public String name()
    {
      throw new UnsupportedOperationException();
    }

    @Override
    public Object value()
    {
      return Array.get(this.array, this.index);
    }
  }
}
    

    

    

            

    

            



    
    






    
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