1 | /* |
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2 | * Copyright (C) 2008 Trinity <http://www.trinitycore.org/> |
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3 | * |
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4 | * Thanks to the original authors: MaNGOS <http://www.mangosproject.org/> |
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5 | * |
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6 | * This program is free software; you can redistribute it and/or modify |
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7 | * it under the terms of the GNU General Public License as published by |
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8 | * the Free Software Foundation; either version 2 of the License, or |
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9 | * (at your option) any later version. |
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10 | * |
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11 | * This program is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | * GNU General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU General Public License |
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17 | * along with this program; if not, write to the Free Software |
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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19 | */ |
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20 | |
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21 | #ifndef __UPDATEMASK_H |
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22 | #define __UPDATEMASK_H |
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23 | |
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24 | #include "UpdateFields.h" |
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25 | #include "Errors.h" |
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26 | |
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27 | class UpdateMask |
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28 | { |
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29 | public: |
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30 | UpdateMask( ) : mCount( 0 ), mBlocks( 0 ), mUpdateMask( 0 ) { } |
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31 | UpdateMask( const UpdateMask& mask ) : mUpdateMask( 0 ) { *this = mask; } |
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32 | |
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33 | ~UpdateMask( ) |
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34 | { |
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35 | if(mUpdateMask) |
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36 | delete [] mUpdateMask; |
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37 | } |
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38 | |
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39 | inline void SetBit (uint32 index) |
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40 | { |
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41 | ( (uint8 *)mUpdateMask )[ index >> 3 ] |= 1 << ( index & 0x7 ); |
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42 | } |
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43 | |
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44 | inline void UnsetBit (uint32 index) |
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45 | { |
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46 | ( (uint8 *)mUpdateMask )[ index >> 3 ] &= (0xff ^ (1 << ( index & 0x7 ) ) ); |
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47 | } |
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48 | |
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49 | inline bool GetBit (uint32 index) |
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50 | { |
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51 | return ( ( (uint8 *)mUpdateMask)[ index >> 3 ] & ( 1 << ( index & 0x7 ) )) != 0; |
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52 | } |
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53 | |
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54 | inline uint32 GetBlockCount() { return mBlocks; } |
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55 | inline uint32 GetLength() { return mBlocks << 2; } |
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56 | inline uint32 GetCount() { return mCount; } |
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57 | inline uint8* GetMask() { return (uint8*)mUpdateMask; } |
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58 | |
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59 | inline void SetCount (uint32 valuesCount) |
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60 | { |
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61 | if(mUpdateMask) |
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62 | delete [] mUpdateMask; |
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63 | |
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64 | mCount = valuesCount; |
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65 | mBlocks = (valuesCount + 31) / 32; |
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66 | |
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67 | mUpdateMask = new uint32[mBlocks]; |
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68 | memset(mUpdateMask, 0, mBlocks << 2); |
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69 | } |
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70 | |
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71 | inline void Clear() |
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72 | { |
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73 | if (mUpdateMask) |
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74 | memset(mUpdateMask, 0, mBlocks << 2); |
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75 | } |
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76 | |
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77 | inline UpdateMask& operator = ( const UpdateMask& mask ) |
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78 | { |
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79 | SetCount(mask.mCount); |
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80 | memcpy(mUpdateMask, mask.mUpdateMask, mBlocks << 2); |
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81 | |
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82 | return *this; |
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83 | } |
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84 | |
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85 | inline void operator &= ( const UpdateMask& mask ) |
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86 | { |
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87 | ASSERT(mask.mCount <= mCount); |
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88 | for (uint32 i = 0; i < mBlocks; i++) |
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89 | mUpdateMask[i] &= mask.mUpdateMask[i]; |
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90 | } |
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91 | |
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92 | inline void operator |= ( const UpdateMask& mask ) |
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93 | { |
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94 | ASSERT(mask.mCount <= mCount); |
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95 | for (uint32 i = 0; i < mBlocks; i++) |
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96 | mUpdateMask[i] |= mask.mUpdateMask[i]; |
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97 | } |
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98 | |
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99 | inline UpdateMask operator & ( const UpdateMask& mask ) const |
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100 | { |
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101 | ASSERT(mask.mCount <= mCount); |
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102 | |
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103 | UpdateMask newmask; |
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104 | newmask = *this; |
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105 | newmask &= mask; |
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106 | |
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107 | return newmask; |
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108 | } |
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109 | |
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110 | inline UpdateMask operator | ( const UpdateMask& mask ) const |
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111 | { |
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112 | ASSERT(mask.mCount <= mCount); |
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113 | |
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114 | UpdateMask newmask; |
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115 | newmask = *this; |
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116 | newmask |= mask; |
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117 | |
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118 | return newmask; |
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119 | } |
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120 | |
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121 | private: |
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122 | uint32 mCount; |
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123 | uint32 mBlocks; |
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124 | uint32 *mUpdateMask; |
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125 | }; |
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126 | #endif |
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