| 22 | |
| 23 | template <class T> |
| 24 | class TArray2D { |
| 25 | private: |
| 26 | typedef T* PT; |
| 27 | T* Data; |
| 28 | T** PData; |
| 29 | size_t XSize; |
| 30 | size_t YSize; |
| 31 | |
| 32 | private: |
| 33 | void Copy(const TArray2D& a) { |
| 34 | XSize = a.XSize; |
| 35 | YSize = a.YSize; |
| 36 | Create(); |
| 37 | for (size_t i = 0; i < XSize * YSize; i++) |
| 38 | Data[i] = a.Data[i]; |
| 39 | } |
| 40 | void Destroy() { |
| 41 | delete[] Data; |
| 42 | delete[] PData; |
| 43 | } |
| 44 | void Create() { |
| 45 | Data = new T[XSize * YSize]; |
| 46 | PData = new PT[YSize]; |
| 47 | for (size_t i = 0; i < YSize; i++) |
| 48 | PData[i] = Data + i * XSize; |
| 49 | } |
| 50 | |
| 51 | public: |
| 52 | TArray2D(size_t xsize = 1, size_t ysize = 1) { |
| 53 | XSize = xsize; |
| 54 | YSize = ysize; |
| 55 | Create(); |
| 56 | } |
| 57 | TArray2D(const TArray2D& a) { |
| 58 | Copy(a); |
| 59 | } |
| 60 | TArray2D& operator=(const TArray2D& a) { |
| 61 | Destroy(); |
| 62 | Copy(a); |
| 63 | return *this; |
| 64 | } |
| 65 | ~TArray2D() { |
| 66 | Destroy(); |
| 67 | } |
| 68 | void SetSizes(size_t xsize, size_t ysize) { |
| 69 | if (XSize == xsize && YSize == ysize) |
| 70 | return; |
| 71 | Destroy(); |
| 72 | XSize = xsize; |
| 73 | YSize = ysize; |
| 74 | Create(); |
| 75 | } |
| 76 | void Clear() { |
| 77 | SetSizes(1, 1); |
| 78 | } |
| 79 | #ifdef _DEBUG |
| 80 | TBoundCheck<T> operator[](size_t i) const { |
| 81 | Y_ASSERT(i < YSize); |