//
// IntegerType.cs
//
//	Author:
//	Chris J Breisch (cjbreisch@altavista.net) 
//	Francesco Delfino (pluto@tipic.com)
//	Dennis Hayes (dennish@raytek.com)
//
//	(C) copyright 2002 Chris J Breisch
//	2002 Tipic, Inc (http://www.tipic.com)
//
 /*
  * Copyright (c) 2002-2003 Mainsoft Corporation.
  * Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  *
  * 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.
  */
using System;
using System.ComponentModel;
using Microsoft.VisualBasic;

namespace Microsoft.VisualBasic.CompilerServices
{
	[StandardModule, EditorBrowsable(EditorBrowsableState.Never)] 
	sealed public class IntegerType {
		private IntegerType () {}

		// Methods
		/**
		 * The method try to convert given string to int in a following way:
		 * 1. If input string is null return 0.
		 * 2. If input string represents number: return value of this number, 
		 * @exception InvalidCastException - in case if number translation failed 
		 * @param str - The string that converted to int
		 * @return int The value that extracted from the input string.
		 * @see Microsoft.VisualBasic.VBUtils#isNumber
		 */ 
		public static System.Int32 FromString (string Value) {
			if(Value == null)return 0;

			double[] lRes = new double[1];
			//the following handles &H &O and other stuff. int.parse does not.
			if (VBUtils.isNumber(Value, lRes)) {
				long val = (long)Math.Round(lRes[0]);
				if (val > Int32.MaxValue || val < Int32.MinValue)
					throw new OverflowException(
						/*Environment.GetResourceString(*/"Overflow_Int32")/*)*/;
				return (int) val;
			}
			return 0;
		}

		public static System.Int32 FromObject (object Value) { 
			if ((object)Value==null)return 0;

			if(Value is string)return FromString((string) Value);

			if(Value is int)return ((int)Value);
                        
			return System.Convert.ToInt32(Value);
		}
	}
}