sfx2/inc/bitset.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #ifndef INCLUDED_SFX2_INC_BITSET_HXX
  20 #define INCLUDED_SFX2_INC_BITSET_HXX
  21
  22 class BitSet
  23 {
  24 private:
  25     void CopyFrom( const BitSet& rSet );
  26     sal_uInt16 nBlocks;
  27     sal_uInt16 nCount;
  28     sal_uInt32* pBitmap;
  29 public:
  30     BitSet operator<<( sal_uInt16 nOffset ) const;
  31     BitSet operator>>( sal_uInt16 nOffset ) const;
  32     static sal_uInt16 CountBits(sal_uInt32 nBits);
  33     bool operator!() const;
  34     BitSet();
  35     BitSet( const BitSet& rOrig );
  36     ~BitSet();
  37     sal_uInt16 Count() const;
  38     BitSet& operator=( const BitSet& rOrig );
  39     BitSet& operator=( sal_uInt16 nBit );
  40     BitSet operator|( const BitSet& rSet ) const;
  41     BitSet operator|( sal_uInt16 nBit ) const;
  42     BitSet& operator|=( const BitSet& rSet );
  43     BitSet& operator|=( sal_uInt16 nBit );
  44     BitSet operator-( const BitSet& rSet ) const;
  45     BitSet operator-( sal_uInt16 nId ) const;
  46     BitSet& operator-=( const BitSet& rSet );
  47     BitSet& operator-=( sal_uInt16 nBit );
  48     BitSet operator&( const BitSet& rSet ) const;
  49     BitSet& operator&=( const BitSet& rSet );
  50     BitSet operator^( const BitSet& rSet ) const;
  51     BitSet operator^( sal_uInt16 nBit ) const;
  52     BitSet& operator^=( const BitSet& rSet );
  53     BitSet& operator^=( sal_uInt16 nBit );
  54     bool Contains( sal_uInt16 nBit ) const;
  55     bool operator==( const BitSet& rSet ) const;
  56     bool operator!=( const BitSet& rSet ) const;
  57
  58 };
  59
  60 // returns sal_True if the set is empty
  61 inline bool BitSet::operator!() const
  62 {
  63     return nCount == 0;
  64 }
  65
  66 // returns the number of bits in the bitset
  67 inline sal_uInt16 BitSet::Count() const
  68 {
  69     return nCount;
  70 }
  71
  72 // creates the union of two bitset
  73 inline BitSet BitSet::operator|( const BitSet& rSet ) const
  74 {
  75     return BitSet(*this) |= rSet;
  76 }
  77
  78 // creates the union of a bitset with a single bit
  79 inline BitSet BitSet::operator|( sal_uInt16 nBit ) const
  80 {
  81     return BitSet(*this) |= nBit;
  82 }
  83
  84 // creates the asymetric difference
  85 inline BitSet BitSet::operator-( const BitSet& ) const
  86 {
  87     return BitSet();
  88 }
  89
  90 // creates the asymetric difference with a single bit
  91 inline BitSet BitSet::operator-( sal_uInt16 ) const
  92 {
  93     return BitSet();
  94 }
  95
  96 // removes the bits contained in rSet
  97 inline BitSet& BitSet::operator-=( const BitSet& )
  98 {
  99     return *this;
 100 }
 101
 102 // creates the intersection with another bitset
 103 inline BitSet BitSet::operator&( const BitSet& ) const
 104 {
 105     return BitSet();
 106 }
 107
 108 // intersects with another bitset
 109 inline BitSet& BitSet::operator&=( const BitSet& )
 110 {
 111     return *this;
 112 }
 113
 114 // creates the symetric difference with another bitset
 115 inline BitSet BitSet::operator^( const BitSet& ) const
 116 {
 117     return BitSet();
 118 }
 119
 120 // creates the symetric difference with a single bit
 121 inline BitSet BitSet::operator^( sal_uInt16 ) const
 122 {
 123     return BitSet();
 124 }
 125
 126 // builds the symetric difference with another bitset
 127 inline BitSet& BitSet::operator^=( const BitSet& )
 128 {
 129     return *this;
 130 }
 131
 132 #ifdef BITSET_READY
 133 // builds the symetric difference with a single bit
 134 inline BitSet& BitSet::operator^=( sal_uInt16 )
 135 {
 136     // crash!!!
 137     return BitSet();
 138 }
 139 #endif
 140
 141 // determines if the bitsets aren't equal
 142 inline bool BitSet::operator!=( const BitSet& rSet ) const
 143 {
 144     return !( *this == rSet );
 145 }
 146
 147 class IndexBitSet : BitSet
 148 {
 149 public:
 150   sal_uInt16 GetFreeIndex();
 151   void ReleaseIndex(sal_uInt16 i){*this-=i;}
 152 };
 153
 154
 155 #endif
 156
 157 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */