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