BitArray.h Example File
appdemos/qtws/QZXing/zxing/zxing/common/BitArray.h
#ifndef __BIT_ARRAY_H__
#define __BIT_ARRAY_H__
#include <zxing/ZXing.h>
#include <zxing/common/Counted.h>
#include <zxing/common/IllegalArgumentException.h>
#include <zxing/common/Array.h>
#include <vector>
#include <limits>
#include <iostream>
namespace zxing {
class BitArray : public Counted {
public:
static const int bitsPerWord = std::numeric_limits<unsigned int>::digits;
private:
int size;
ArrayRef<int> bits;
static const int logBits = ZX_LOG_DIGITS(bitsPerWord);
static const int bitsMask = (1 << logBits) - 1;
public:
BitArray();
BitArray(int size);
BitArray(std::vector<int> other);
~BitArray();
int getSize() const;
int getSizeInBytes() const;
bool get(int i) const {
return (bits[i / 32] & (1 << (i & 0x1F))) != 0;
}
void set(int i) {
bits[i / 32] |= 1 << (i & 0x1F);
}
void flip(int i) {
bits[i / 32] ^= 1 << (i & 0x1F);
}
int getNextSet(int from);
int getNextUnset(int from);
void setBulk(int i, int newBits);
void setRange(int start, int end);
void clear();
bool isRange(int start, int end, bool value);
std::vector<int>& getBitArray();
void appendBit(bool bit);
void appendBits(int value, int numBits);
void appendBitArray(const BitArray& other);
void ensureCapacity(int size);
void xor_(const BitArray& other);
void toBytes(int bitOffset, std::vector<byte>& array, int offset, int numBytes) const;
const std::string toString() const;
static ArrayRef<int> makeArray(int size) {
return ArrayRef<int>((size + 31) / 32);
}
void reverse();
class Reverse {
private:
Ref<BitArray> array;
public:
Reverse(Ref<BitArray> array);
~Reverse();
};
private:
static int makeArraySize(int size);
};
std::ostream& operator << (std::ostream&, BitArray const&);
}
#endif // __BIT_ARRAY_H__