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root/group/trunk/OOPSE-4/src/utils/BitSet.hpp
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Comparing trunk/OOPSE-4/src/utils/BitSet.hpp (file contents):
Revision 1961 by tim, Tue Feb 1 06:55:00 2005 UTC vs.
Revision 2204 by gezelter, Fri Apr 15 22:04:00 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>
52 < */
53 < class BitSet {
54 <    public:
55 <        /** */
56 <        BitSet() {}
57 <        /** */
58 <        BitSet(int nbits) {  bitset_.resize(nbits);  }
49 >  /**
50 >   * @class BitSet BitSet.hpp "BitSet.hpp"
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_(nbits) {clearAll(); }
59  
60 <        /** Returns the number of bits set to true in this BitSet.  */
61 <        int countBits();
60 >    /** Returns the number of bits set to true in this BitSet.  */
61 >    int countBits();
62  
63 <        /** Sets the bit at the specified index to to the complement of its current value. */
64 <        void flip(int bitIndex) {  bitset_[bitIndex] = !bitset_[bitIndex];  }
63 >    /** Sets the bit at the specified index to to the complement of its current value. */
64 >    void flip(int bitIndex) {  bitset_[bitIndex] = !bitset_[bitIndex];  }
65  
66 <        /** Sets each bit from the specified fromIndex(inclusive) to the specified toIndex(exclusive) to the complement of its current value. */
67 <        void flip(int fromIndex, int toIndex);
66 >    /** Sets each bit from the specified fromIndex(inclusive) to the specified toIndex(exclusive) to the complement of its current value. */
67 >    void flip(int fromIndex, int toIndex);
68  
69 <        /** Sets each bit to the complement of its current value. */
70 <        void flip() { flip(0, size()); }
69 >    /** Sets each bit to the complement of its current value. */
70 >    void flip() { flip(0, size()); }
71          
72 <        /** Returns the value of the bit with the specified index. */
73 <        bool get(int bitIndex) {  return bitset_[bitIndex];  }
72 >    /** Returns the value of the bit with the specified index. */
73 >    bool get(int bitIndex) {  return bitset_[bitIndex];  }
74          
75 <        /** Returns a new BitSet composed of bits from this BitSet from fromIndex(inclusive) to toIndex(exclusive). */
76 <        BitSet get(int fromIndex, int toIndex);
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 <                
81 <        /** Returns the index of the first bit that is set to false that occurs on or after the specified starting index.*/
82 <        int nextOffBit(int fromIndex);
83 <        
84 <        /** Returns the index of the first bit that is set to true that occurs on or after the specified starting index. */
84 <        int nextOnBit(int fromIndex);
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() const { return !bitset_[0] ? 0 : nextOffBit(0); }
85          
86 <        /** Performs a logical AND of this target bit set with the argument bit set. */
87 <        void and(const BitSet& bs);
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) const;
88  
89 <        /** Clears all of the bits in this BitSet whose corresponding bit is set in the specified BitSet. */
90 <        void andNot(const BitSet& bs);
89 >    int firstOnBit() const { return bitset_[0] ? 0 : nextOnBit(0); }
90          
91 <        /** Performs a logical OR of this bit set with the bit set argument. */
92 <        void or(const BitSet& bs);
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) const;
93          
94 <        /** Performs a logical XOR of this bit set with the bit set argument. */
95 <        void xor(const BitSet& bs);        
94 >    /** Performs a logical AND of this target bit set with the argument bit set. */
95 >    void andOperator (const BitSet& bs);
96 >      
97 >    /** Performs a logical OR of this bit set with the bit set argument. */
98 >    void orOperator (const BitSet& bs);
99 >        
100 >    /** Performs a logical XOR of this bit set with the bit set argument. */
101 >    void xorOperator (const BitSet& bs);        
102                
103 <        void setBitOn(int bitIndex) {  setBit(bitIndex, true);  }
103 >    void setBitOn(int bitIndex) {  setBit(bitIndex, true);  }
104  
105 <        void setBitOff(int bitIndex) {  setBit(bitIndex, false);  }
105 >    void setBitOff(int bitIndex) {  setBit(bitIndex, false);  }
106  
107 <        void setRangeOn(int fromIndex, int toIndex) {  setBits(fromIndex, toIndex, true);  }
107 >    void setRangeOn(int fromIndex, int toIndex) {  setBits(fromIndex, toIndex, true);  }
108  
109 <        void setRangeOff(int fromIndex, int toIndex) {  setBits(fromIndex, toIndex, false);  }        
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());  }        
111 >    /** Sets all of the bits in this BitSet to false. */
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();  }
116 >    /** Returns the number of bits of space actually in use by this BitSet to represent bit values. */
117 >    int size() const {  return bitset_.size();  }
118  
119 <        /** Changes the size of BitSet*/
120 <        bool resize(int nbits) {  bitset_.resize();  }
119 >    /** Changes the size of BitSet*/
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];  }
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 BitSet operator| (BitSet& bs1, BitSet& bs2);
140 <        friend BitSet operator& (BitSet& bs1, BitSet& bs2);
122 <        friend BitSet operator^ (BitSet& bs1, BitSet& bs2);
123 <        friend bool operator== (const BitSet & bs1, const BitSet &bs2);
139 >    //friend std::istream& operator>> ( std::istream&, const BitSet& bs);
140 >    friend std::ostream& operator<< ( std::ostream&, const BitSet& bs) ;
141  
142 <        friend std::istream& operator>> ( std::istream&, BitSet& bs);
126 <        friend std::ostream& operator<< ( std::ostream&, const BitSet& bs) ;
142 >  private:
143  
144 <    private:
145 <
130 <        /** Sets the bit at the specified index to the specified value. */
131 <        void setBit(int bitIndex, bool value) { bitset_[bitIndex] = value; }
144 >    /** Sets the bit at the specified index to the specified value. */
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) {}
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);
149          
150 <        std::vector<char> bitset_;
151 < };
150 >    std::vector<char> bitset_;
151 >  };
152  
153 +
154   }
155   #endif

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