source: downloads/ogre/Tools/LightwaveConverter/src/BitArray.cpp @ 15

#include "BitArray.h"

BitArray::BitArray(unsigned long newsize)
{
        arraysize = newsize;
        bitlongs = ((arraysize - 1) >> 5) + 1;
        bits = new unsigned long[bitlongs];
}

BitArray::BitArray(const BitArray& b)
{
        arraysize = b.arraysize;
        bitlongs = b.bitlongs;
        bits = new unsigned long[bitlongs];
        for (unsigned long i = 0; i < bitlongs; i++)
                bits[i] = b.bits[i];
}

BitArray::BitArray(unsigned long newsize, bool bitvalues)
{
        arraysize = newsize;
        bitlongs = ((arraysize - 1) >> 5) + 1;
        bits = new unsigned long[bitlongs];
    if (bitvalues) set(); else clear();
}

BitArray::BitArray(unsigned long newsize, unsigned long *newbits)
{
        arraysize = newsize;
        bitlongs = ((arraysize - 1) >> 5) + 1;
        bits = new unsigned long[bitlongs];
        for (unsigned long i = 0; i < bitlongs; i++)
                bits[i] = newbits[i];
}

BitArray::~BitArray()
{
        delete []bits;
}

BitArray& BitArray::operator =(const BitArray& b)
{
        bool equalsize = arraysize == b.arraysize;
        
        arraysize = b.arraysize;
        bitlongs = b.bitlongs;
        
        if (!equalsize) {
                delete []bits;
                bits = new unsigned long[bitlongs];
        }
        for (unsigned long i = 0; i < bitlongs; i++)
                bits[i] = b.bits[i];
        
        return (*this);
}

BitArray BitArray::operator ~(void)
{
        BitArray result(arraysize);
        
        for (unsigned long i = 0; i < bitlongs; i++)
                result.bits[i] = ~bits[i];
        
        return (result);
}

BitArray& BitArray::operator ^=(const BitArray& b)
{
        for (unsigned long i = 0; i < ((bitlongs < b.bitlongs) ? bitlongs : b.bitlongs); i++)
                bits[i] ^= b.bits[i];
        return (*this);
}

BitArray& BitArray::operator &=(const BitArray& b)
{
        for (unsigned long i = 0; i < ((bitlongs < b.bitlongs) ? bitlongs : b.bitlongs); i++)
                bits[i] &= b.bits[i];
        return (*this);
}

BitArray& BitArray::operator |=(const BitArray& b)
{
        for (unsigned long i = 0; i < (bitlongs < b.bitlongs ? bitlongs : b.bitlongs); i++)
                bits[i] |= b.bits[i];
        return (*this);
}

BitArray BitArray::operator ^(const BitArray& b)
{
        BitArray result((arraysize < b.arraysize) ? arraysize : b.arraysize);
        
        for (unsigned long i = 0; i < result.bitlongs; i++)
                result.bits[i] = bits[i] ^ b.bits[i];
        return (result);
}

BitArray BitArray::operator &(const BitArray& b)
{
        BitArray result((arraysize < b.arraysize) ? arraysize : b.arraysize);
        
        for (unsigned long i = 0; i < result.bitlongs; i++)
                result.bits[i] = bits[i] & b.bits[i];
        return (result);
}

BitArray BitArray::operator |(const BitArray& b)
{
        BitArray result((arraysize < b.arraysize) ? arraysize : b.arraysize);
        
        for (unsigned long i = 0; i < result.bitlongs; i++)
                result.bits[i] = bits[i] | b.bits[i];
        return (result);
}