package polarDust.calculator;

/*
 * Copyright (c) 1996 Sorin Lazareanu, All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies.
 *
 */

import java.util.*;
import java.lang.*;

/**
 * CalcHashtable is a colection of associations between a key integer code and
 * a String value.
 *
 * <br><br><a href=../source/polarDust/calculator/CalcHashtable.java>
 * The source code.</a>
 *
 * @version 0.9, 1996.06.04
 * @author Sorin Lazareanu
 */

public final class CalcHashtable implements CalcConstants {
	static Hashtable calcHashtable = new Hashtable();
	public CalcHashtable() {
		calcHashtable.put(new Integer(NUL), STR_NUL);
		calcHashtable.put(new Integer(ZERO), STR_0);
		calcHashtable.put(new Integer(ONE), STR_1);
		calcHashtable.put(new Integer(TWO), STR_2);
		calcHashtable.put(new Integer(THREE), STR_3);
		calcHashtable.put(new Integer(FOUR), STR_4);
		calcHashtable.put(new Integer(FIVE), STR_5);
		calcHashtable.put(new Integer(SIX), STR_6);
		calcHashtable.put(new Integer(SEVEN), STR_7);
		calcHashtable.put(new Integer(EIGHT), STR_8);
		calcHashtable.put(new Integer(NINE), STR_9);
		calcHashtable.put(new Integer(DOT), STR_DOT);
		calcHashtable.put(new Integer(ADD), STR_ADD);
		calcHashtable.put(new Integer(SUB), STR_SUB);
		calcHashtable.put(new Integer(MUL), STR_MUL);
		calcHashtable.put(new Integer(DIV), STR_DIV);
		calcHashtable.put(new Integer(EQU), STR_EQU);
		calcHashtable.put(new Integer(PRC), STR_PRC);
		calcHashtable.put(new Integer(CLR), STR_CLR);
		calcHashtable.put(new Integer(CE), STR_CE);
		calcHashtable.put(new Integer(MR), STR_MR);
		calcHashtable.put(new Integer(MC), STR_MC);
		calcHashtable.put(new Integer(MADD), STR_MADD);
		calcHashtable.put(new Integer(MSUB), STR_MSUB);
		calcHashtable.put(new Integer(SWAP), STR_SWAP);
		calcHashtable.put(new Integer(SQR), STR_SQR);
		calcHashtable.put(new Integer(SQRT), STR_SQRT);
		calcHashtable.put(new Integer(VPI), STR_VPI);
		calcHashtable.put(new Integer(LN), STR_LN);
		calcHashtable.put(new Integer(LOG), STR_LOG);
		calcHashtable.put(new Integer(EXP), STR_EXP);
		calcHashtable.put(new Integer(SIN), STR_SIN);
		calcHashtable.put(new Integer(ASIN), STR_ASIN);
		calcHashtable.put(new Integer(COS), STR_COS);
		calcHashtable.put(new Integer(ACOS), STR_ACOS);
		calcHashtable.put(new Integer(TAN), STR_TAN);
		calcHashtable.put(new Integer(ATAN), STR_ATAN);
		calcHashtable.put(new Integer(POW), STR_POW);
		calcHashtable.put(new Integer(INV), STR_INV);
		calcHashtable.put(new Integer(SGN), STR_SGN);
		calcHashtable.put(new Integer(VE), STR_VE);
	}
	/** 
    * @param aValue a value to be searched for.
	* @return the value is in CalcHashtable.
	*/
	public static boolean contains(Object aValue) {
		return calcHashtable.contains(aValue);
	}

	/** 
    * @param aKey a key to be searched for.
	* @return the key is in CalcHashtable.
	*/
	public static boolean containsKey(Object aKey) {
		return calcHashtable.containsKey(aKey);
	}

	/** 
    * @param aKey a key to be searched for.
	* @return the value associated with the key in CalcHashtable
	*/
	public static Object get(Object aKey) {
		return calcHashtable.get(aKey);
	}

	/**
	* @return an enumeration of the CalcHashtable's elements.
	*/
	public static Enumeration elements() {
		return calcHashtable.elements();
	}

	/**
	* @return an enumeration of the CalcHashtable's keys.
	*/
	public static Enumeration keys() {
		return calcHashtable.keys();
	}

	/**
	* @return the number of elements contained in the CalcHashtable.
	*/
	public static int size() {
		return calcHashtable.size();
	}

	public String toString() {
		return "CalcHashtable";
	}

}