/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

* 

* Description:

*

*/

using System;

using System.Collections.Generic;

using System.Text;

namespace SymbianUtils.BasicTypes

{

    public class SymByte

    {

        #region Constructors

        public SymByte( byte aValue )

        {

            iValue = aValue;

        }

        public SymByte( string aBinary )

        {

            iValue = (byte) SymBitUtils.CreateMask( aBinary );

        }

        #endregion

        #region API

        public bool IsMatch( string aBinary )

        {

            SymByte value = 0;

            SymByte mask = SymBitUtils.CreateMask( aBinary, out value );

            bool ret = ( mask & iValue ) == value;

            return ret;

        }

        public SymByte LowestBits( int aCount )

        {

            // Make the mask

            byte mask = 0;

            for ( int i = 0; i < aCount; i++ )

            {

                mask |= (byte) ( 0x1 << i );

            }

            // Apply it

            byte ret = (byte) ( iValue & mask );

            return new SymByte( ret );

        }

        public SymByte HighestBitsShiftedRight( int aCount )

        {

            // Make the mask

            byte mask = 0;

            for ( int i = 7; i >=0; i-- )

            {

                mask |= (byte) ( 0x1 << i );

            }

            // Apply it

            byte ret = (byte) ( iValue & mask );

            // Shift

            ret >>= aCount;

            return new SymByte( ret );

        }

        public void RShift( int aBits )

        {

            iValue >>= aBits;

        }

        public uint LShift( int aBits )

        {

            uint ret = (uint) ( iValue << aBits );

            return ret;

        }

        #endregion

        #region Properties

        public byte Value

        {

            get { return iValue; }

            set { iValue = value; }

        }

        public string Binary

        {

            get

            {

                StringBuilder ret = new StringBuilder();

                ret.Append( Convert.ToString( Value, 2 ).PadLeft( 8, '0' ) );

                return ret.ToString();

            }

        }

        public bool this[ int aIndex ]

        {

            get

            {

                byte mask = (byte) ( 0x1 << aIndex );

                bool set = ( mask & Value ) == mask;

                return set;

            }

        }

        #endregion

        #region Operators

        public static implicit operator byte( SymByte aByte )

        {

            return aByte.Value;

        }

        public static implicit operator SymByte( byte aByte )

        {

            return new SymByte( aByte );

        }

        public static bool operator ==( SymByte aLeft, SymByte aRight )

        {

            bool result = aLeft.Value == aRight.Value;

            return result;

        }

        public static bool operator !=( SymByte aLeft, SymByte aRight )

        {

            bool result = !( aLeft == aRight );

            return result;

        }

        public static SymByte operator &( SymByte aLeft, SymByte aRight )

        {

            byte result = (byte) ( aLeft.Value & aRight.Value );

            return new SymByte( result );

        }

        #endregion

        #region From System.Object

        public override string ToString()

        {

            StringBuilder ret = new StringBuilder();

            ret.AppendFormat( "{0:x2} [{1}]", iValue, System.Convert.ToString( iValue, 2 ).PadLeft( 8, '0' ) );

            return ret.ToString();

        }

        public override bool Equals( object aObject )

        {

            bool ret = false;

            //

            if ( aObject != null && aObject is SymByte )

            {

                SymByte other = (SymByte) aObject;

                ret = ( other.Value == this.Value );

            }

            //

            return ret;

        }

        public override int GetHashCode()

        {

            return iValue.GetHashCode();

        }

        #endregion

        #region Internal methods

        #endregion

        #region Data members

        private byte iValue = 0;

        #endregion

    }

}