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root/OpenMD/trunk/src/utils/BitSet.hpp
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Comparing trunk/src/utils/BitSet.hpp (file contents):
Revision 277 by tim, Tue Feb 1 06:55:00 2005 UTC vs.
Revision 353 by tim, Wed Feb 16 19:36:30 2005 UTC

# Line 42 | Line 42
42   #ifndef UTILS_BITSET_HPP
43   #define UTILS_BITSET_HPP
44  
45 + #include <iostream>
46   #include <vector>
47   namespace oopse {
48  
49   /**
50   * @class BitSet BitSet.hpp "BitSet.hpp"
51 < * @brief BitSet is a wrapper class of std::vector<char>
51 > * @brief BitSet is a wrapper class of std::vector<char> to act as a growable std::bitset
52   */
53   class BitSet {
54      public:
55          /** */
56          BitSet() {}
57          /** */
58 <        BitSet(int nbits) {  bitset_.resize(nbits);  }
58 >        BitSet(int nbits) : bitset_(nbits) {clearAll(); }
59  
60          /** Returns the number of bits set to true in this BitSet.  */
61          int countBits();
# Line 74 | Line 75 | class BitSet {
75          /** Returns a new BitSet composed of bits from this BitSet from fromIndex(inclusive) to toIndex(exclusive). */
76          BitSet get(int fromIndex, int toIndex);
77          
78 <        /** Returns true if this BitSet contains no bits that are set to true. */
79 <        bool isEmpty();
80 <                
78 >        /** Returns true if any bits are set to true */
79 >        bool any() {return !none(); }
80 >
81 >        /** Returns true if no bits are set to true */
82 >        bool none();
83 >
84 >        int firstOffBit() { return !bitset_[0] ? 0 : nextOffBit(0); }
85 >        
86          /** Returns the index of the first bit that is set to false that occurs on or after the specified starting index.*/
87 <        int nextOffBit(int fromIndex);
88 <        
87 >        int nextOffBit(int fromIndex) const;
88 >
89 >        int firstOnBit() { return bitset_[0] ? 0 : nextOnBit(0); }
90 >        
91          /** Returns the index of the first bit that is set to true that occurs on or after the specified starting index. */
92 <        int nextOnBit(int fromIndex);
92 >        int nextOnBit(int fromIndex) const;
93          
94          /** Performs a logical AND of this target bit set with the argument bit set. */
95 <        void and(const BitSet& bs);
96 <
89 <        /** Clears all of the bits in this BitSet whose corresponding bit is set in the specified BitSet. */
90 <        void andNot(const BitSet& bs);
91 <        
95 >        void andOperator (const BitSet& bs);
96 >      
97          /** Performs a logical OR of this bit set with the bit set argument. */
98 <        void or(const BitSet& bs);
98 >        void orOperator (const BitSet& bs);
99          
100          /** Performs a logical XOR of this bit set with the bit set argument. */
101 <        void xor(const BitSet& bs);        
101 >        void xorOperator (const BitSet& bs);        
102                
103          void setBitOn(int bitIndex) {  setBit(bitIndex, true);  }
104  
# Line 104 | Line 109 | class BitSet {
109          void setRangeOff(int fromIndex, int toIndex) {  setBits(fromIndex, toIndex, false);  }        
110  
111          /** Sets all of the bits in this BitSet to false. */
112 <        void clear() {  setRangeOff(0, size());  }        
112 >        void clearAll() {  setRangeOff(0, size());  }        
113 >
114 >        void setAll() {  setRangeOn(0, size());  }        
115          
116          /** Returns the number of bits of space actually in use by this BitSet to represent bit values. */
117 <        int size() {  return bitset_.size();  }
117 >        int size() const {  return bitset_.size();  }
118  
119          /** Changes the size of BitSet*/
120 <        bool resize(int nbits) {  bitset_.resize();  }
120 >        void resize(int nbits);
121          
122 <        BitSet& operator&= (const BitSet &bs) {  and(bs); return *this; }
123 <        BitSet& operator|= (const BitSet &bs) { or(bs); return *this; }
124 <        BitSet& operator^= (const BitSet &bs) { xor(bs); return *this; }
125 <        bool operator[] (int bitIndex) {  return bitset_[bitIndex];  }
126 <
127 <        friend BitSet operator| (BitSet& bs1, BitSet& bs2);
128 <        friend BitSet operator& (BitSet& bs1, BitSet& bs2);
129 <        friend BitSet operator^ (BitSet& bs1, BitSet& bs2);
122 >        BitSet& operator&= (const BitSet &bs) {  andOperator (bs); return *this; }
123 >        BitSet& operator|= (const BitSet &bs) { orOperator (bs); return *this; }
124 >        BitSet& operator^= (const BitSet &bs) { xorOperator (bs); return *this; }
125 >        BitSet& operator-= (const BitSet &bs) {
126 >            BitSet tmp = *this ^ bs;
127 >            *this &= tmp;
128 >            return *this;
129 >        }
130 >        
131 >        bool operator[] (int bitIndex)  const {  return bitset_[bitIndex];  }
132 >        friend BitSet operator| (const BitSet& bs1, const BitSet& bs2);
133 >        friend BitSet operator& (const BitSet& bs1, const BitSet& bs2);
134 >        friend BitSet operator^ (const BitSet& bs1, const BitSet& bs2);
135 >        friend BitSet operator- (const BitSet& bs1, const BitSet& bs2);
136 >        
137          friend bool operator== (const BitSet & bs1, const BitSet &bs2);
138  
139 <        friend std::istream& operator>> ( std::istream&, BitSet& bs);
139 >        friend std::istream& operator>> ( std::istream&, const BitSet& bs);
140          friend std::ostream& operator<< ( std::ostream&, const BitSet& bs) ;
141  
142      private:
# Line 131 | Line 145 | class BitSet {
145          void setBit(int bitIndex, bool value) { bitset_[bitIndex] = value; }
146          
147          /** Sets the bits from the specified fromIndex(inclusive) to the specified toIndex(exclusive) to the specified value. */
148 <        void setBits(int fromIndex, int toIndex, bool value) {}
148 >        void setBits(int fromIndex, int toIndex, bool value);
149          
150          std::vector<char> bitset_;
151   };
152  
153 +
154   }
155   #endif

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