/* IntegerSyntax.java -- 
   Copyright (C) 2003, 2004, 2005  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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permission to link this library with independent modules to produce an
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package javax.print.attribute;

import java.io.Serializable;

/**
 * <code>IntegerSyntax</code> is the abstract base class of all attribute 
 * classes having an integer as value.
 * 
 * @author Michael Koch (konqueror@gmx.de)
 */
public abstract class IntegerSyntax implements Cloneable, Serializable
{
  private int value;

  /**
   * Creates a <code>IntegerSyntax</code> with the given value.
   *
   * @param value the integer to set
   */
  protected IntegerSyntax(int value)
  {
    this.value = value;
  }

  /**
   * Creates a <code>IntegerSyntax</code> with the given integer value
   * and checks if the value lies inside the given bounds..
   *
   * @param value the integer to set
   * @param lowerBound the lower bound for the value
   * @param upperBound the upper bound for the value
   *
   * @exception IllegalArgumentException if value < lowerBound
   * or value > upperBound
   */
  protected IntegerSyntax(int value, int lowerBound, int upperBound)
  {
    if (value < lowerBound
        || value > upperBound)
      throw new IllegalArgumentException("value not in range");

    this.value = value;
  }

  /**
   * Returns the value of this object.
   *
   * @return The integer value.
   */
  public int getValue()
  {
    return value;
  }

  /**
   * Tests if the given object is equal to this object.
   *
   * @param obj the object to test
   *
   * @return <code>true</code> if both objects are equal, 
   * <code>false</code> otherwise.
   */
  public boolean equals(Object obj)
  {
    if(! (obj instanceof IntegerSyntax))
      return false;

    return value == ((IntegerSyntax) obj).getValue();
  }

  /**
   * Returns the hashcode for this object.
   *
   * @return The hashcode.
   */
  public int hashCode()
  {
    return value;
  }

  /**
   * Returns the string representation for this object.
   *
   * @return The string representation.
   */
  public String toString()
  {
    return "" + value;
  }
}