[2] | 1 | /* |
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| 2 | * Copyright (C) 2005-2008 MaNGOS <http://www.mangosproject.org/> |
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| 3 | * |
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| 4 | * This program is free software; you can redistribute it and/or modify |
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| 5 | * it under the terms of the GNU General Public License as published by |
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| 6 | * the Free Software Foundation; either version 2 of the License, or |
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| 7 | * (at your option) any later version. |
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| 8 | * |
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| 9 | * This program is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 12 | * GNU General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU General Public License |
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| 15 | * along with this program; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 17 | */ |
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| 18 | |
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| 19 | #ifndef __UPDATEMASK_H |
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| 20 | #define __UPDATEMASK_H |
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| 21 | |
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| 22 | #include "UpdateFields.h" |
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| 23 | #include "Errors.h" |
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| 24 | |
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| 25 | class UpdateMask |
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| 26 | { |
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| 27 | public: |
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| 28 | UpdateMask( ) : mCount( 0 ), mBlocks( 0 ), mUpdateMask( 0 ) { } |
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| 29 | UpdateMask( const UpdateMask& mask ) : mUpdateMask( 0 ) { *this = mask; } |
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| 30 | |
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| 31 | ~UpdateMask( ) |
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| 32 | { |
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| 33 | if(mUpdateMask) |
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| 34 | delete [] mUpdateMask; |
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| 35 | } |
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| 36 | |
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| 37 | inline void SetBit (uint32 index) |
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| 38 | { |
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| 39 | ( (uint8 *)mUpdateMask )[ index >> 3 ] |= 1 << ( index & 0x7 ); |
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| 40 | } |
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| 41 | |
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| 42 | inline void UnsetBit (uint32 index) |
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| 43 | { |
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| 44 | ( (uint8 *)mUpdateMask )[ index >> 3 ] &= (0xff ^ (1 << ( index & 0x7 ) ) ); |
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| 45 | } |
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| 46 | |
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| 47 | inline bool GetBit (uint32 index) |
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| 48 | { |
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| 49 | return ( ( (uint8 *)mUpdateMask)[ index >> 3 ] & ( 1 << ( index & 0x7 ) )) != 0; |
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| 50 | } |
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| 51 | |
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| 52 | inline uint32 GetBlockCount() { return mBlocks; } |
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| 53 | inline uint32 GetLength() { return mBlocks << 2; } |
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| 54 | inline uint32 GetCount() { return mCount; } |
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| 55 | inline uint8* GetMask() { return (uint8*)mUpdateMask; } |
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| 56 | |
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| 57 | inline void SetCount (uint32 valuesCount) |
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| 58 | { |
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| 59 | if(mUpdateMask) |
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| 60 | delete [] mUpdateMask; |
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| 61 | |
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| 62 | mCount = valuesCount; |
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| 63 | mBlocks = (valuesCount + 31) / 32; |
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| 64 | |
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| 65 | mUpdateMask = new uint32[mBlocks]; |
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| 66 | memset(mUpdateMask, 0, mBlocks << 2); |
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| 67 | } |
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| 68 | |
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| 69 | inline void Clear() |
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| 70 | { |
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| 71 | if (mUpdateMask) |
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| 72 | memset(mUpdateMask, 0, mBlocks << 2); |
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| 73 | } |
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| 74 | |
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| 75 | inline UpdateMask& operator = ( const UpdateMask& mask ) |
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| 76 | { |
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| 77 | SetCount(mask.mCount); |
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| 78 | memcpy(mUpdateMask, mask.mUpdateMask, mBlocks << 2); |
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| 79 | |
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| 80 | return *this; |
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| 81 | } |
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| 82 | |
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| 83 | inline void operator &= ( const UpdateMask& mask ) |
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| 84 | { |
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| 85 | ASSERT(mask.mCount <= mCount); |
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| 86 | for (uint32 i = 0; i < mBlocks; i++) |
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| 87 | mUpdateMask[i] &= mask.mUpdateMask[i]; |
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| 88 | } |
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| 89 | |
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| 90 | inline void operator |= ( const UpdateMask& mask ) |
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| 91 | { |
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| 92 | ASSERT(mask.mCount <= mCount); |
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| 93 | for (uint32 i = 0; i < mBlocks; i++) |
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| 94 | mUpdateMask[i] |= mask.mUpdateMask[i]; |
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| 95 | } |
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| 96 | |
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| 97 | inline UpdateMask operator & ( const UpdateMask& mask ) const |
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| 98 | { |
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| 99 | ASSERT(mask.mCount <= mCount); |
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| 100 | |
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| 101 | UpdateMask newmask; |
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| 102 | newmask = *this; |
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| 103 | newmask &= mask; |
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| 104 | |
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| 105 | return newmask; |
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| 106 | } |
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| 107 | |
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| 108 | inline UpdateMask operator | ( const UpdateMask& mask ) const |
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| 109 | { |
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| 110 | ASSERT(mask.mCount <= mCount); |
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| 111 | |
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| 112 | UpdateMask newmask; |
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| 113 | newmask = *this; |
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| 114 | newmask |= mask; |
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| 115 | |
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| 116 | return newmask; |
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| 117 | } |
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| 118 | |
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| 119 | private: |
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| 120 | uint32 mCount; |
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| 121 | uint32 mBlocks; |
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| 122 | uint32 *mUpdateMask; |
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| 123 | }; |
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| 124 | #endif |
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