完成bitmap的接口

This commit is contained in:
邹晓航
2014-09-25 14:30:52 +08:00
parent fc9637a9d8
commit 76af4f1e4b

View File

@@ -1,8 +1,61 @@
#ifndef _BITMAP_H_
#define _BITMAP_H_
#include <cstdint>
#include <string>
#include "Allocator.h"
#include "UninitializedFunctions.h"
namespace TinySTL{
template<size_t N>
class bitmap{
public:
typedef allocator<uint8_t> dataAllocator;
private:
uint8_t *start_;
uint8_t *finish_;
const size_t size_;
enum EAlign{ ALIGN = 8 };
public:
bitmap();
explicit bitmap(const std::string& str);//TODO
//Returns the number of bits in the bitset that are set (i.e., that have a value of one)
size_t count() const;//TODO
size_t size() const{ return size_; }
//Returns whether the bit at position pos is set (i.e., whether it is one).
bool test(size_t pos) const;//TODO
//Returns whether any of the bits is set (i.e., whether at least one bit in the bitset is set to one).
bool any() const;//TODO
//Returns whether none of the bits is set (i.e., whether all bits in the bitset have a value of zero).
bool none() const;//TODO
//Returns whether all of the bits in the bitset are set (to one).
bool all() const;//TODO
bitset& set();//TODO
bitset& set(size_t pos, bool val = true);//TODO
bitset& reset();//TODO
bitset& reset(size_t pos);//TODO
bitset& flip();//TODO
bitset& flip(size_t pos);//TODO
std::string to_string() const;//TODO
private:
size_t roundUp8(size_t bytes){
return ((bytes + EAlign::ALIGN - 1) & ~(EAlign::ALIGN - 1));
}
void allocateAndFillN(const size_t n, const uint8_t val){
start_ = dataAllocator::allocate(n);
finish_ = uninitialized_fill_n(start_, n, val);
}
};// end of bitmap
template<size_t N>
bitmap<N>::bitmap() :size_(N){
allocateAndFillN(size_, 0);
}
}
#endif