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124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
/*
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* Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __UPDATEMASK_H
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#define __UPDATEMASK_H
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#include "UpdateFields.h"
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#include "Errors.h"
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class UpdateMask
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{
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public:
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UpdateMask( ) : mCount( 0 ), mBlocks( 0 ), mUpdateMask( 0 ) { }
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UpdateMask( const UpdateMask& mask ) : mUpdateMask( 0 ) { *this = mask; }
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~UpdateMask( )
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{
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if(mUpdateMask)
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delete [] mUpdateMask;
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}
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void SetBit (uint32 index)
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{
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( (uint8 *)mUpdateMask )[ index >> 3 ] |= 1 << ( index & 0x7 );
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}
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void UnsetBit (uint32 index)
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{
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( (uint8 *)mUpdateMask )[ index >> 3 ] &= (0xff ^ (1 << ( index & 0x7 ) ) );
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}
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bool GetBit (uint32 index) const
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{
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return ( ( (uint8 *)mUpdateMask)[ index >> 3 ] & ( 1 << ( index & 0x7 ) )) != 0;
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}
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uint32 GetBlockCount() const { return mBlocks; }
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uint32 GetLength() const { return mBlocks << 2; }
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uint32 GetCount() const { return mCount; }
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uint8* GetMask() { return (uint8*)mUpdateMask; }
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void SetCount (uint32 valuesCount)
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{
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if(mUpdateMask)
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delete [] mUpdateMask;
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mCount = valuesCount;
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mBlocks = (valuesCount + 31) / 32;
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mUpdateMask = new uint32[mBlocks];
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memset(mUpdateMask, 0, mBlocks << 2);
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}
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void Clear()
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{
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if (mUpdateMask)
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memset(mUpdateMask, 0, mBlocks << 2);
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}
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UpdateMask& operator = ( const UpdateMask& mask )
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{
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SetCount(mask.mCount);
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memcpy(mUpdateMask, mask.mUpdateMask, mBlocks << 2);
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return *this;
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}
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void operator &= ( const UpdateMask& mask )
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{
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ASSERT(mask.mCount <= mCount);
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for (uint32 i = 0; i < mBlocks; ++i)
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mUpdateMask[i] &= mask.mUpdateMask[i];
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}
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void operator |= ( const UpdateMask& mask )
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{
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ASSERT(mask.mCount <= mCount);
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for (uint32 i = 0; i < mBlocks; ++i)
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mUpdateMask[i] |= mask.mUpdateMask[i];
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}
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UpdateMask operator & ( const UpdateMask& mask ) const
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{
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ASSERT(mask.mCount <= mCount);
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UpdateMask newmask;
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newmask = *this;
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newmask &= mask;
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return newmask;
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}
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UpdateMask operator | ( const UpdateMask& mask ) const
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{
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ASSERT(mask.mCount <= mCount);
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UpdateMask newmask;
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newmask = *this;
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newmask |= mask;
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return newmask;
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}
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private:
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uint32 mCount;
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uint32 mBlocks;
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uint32 *mUpdateMask;
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};
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#endif
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