| #ifndef MARISA_SCOPED_PTR_H_ |
| #define MARISA_SCOPED_PTR_H_ |
| |
| #include "marisa/base.h" |
| |
| namespace marisa { |
| |
| template <typename T> |
| class scoped_ptr { |
| public: |
| scoped_ptr() : ptr_(NULL) {} |
| explicit scoped_ptr(T *ptr) : ptr_(ptr) {} |
| |
| ~scoped_ptr() { |
| delete ptr_; |
| } |
| |
| void reset(T *ptr = NULL) { |
| MARISA_DEBUG_IF((ptr != NULL) && (ptr == ptr_), MARISA_RESET_ERROR); |
| scoped_ptr(ptr).swap(*this); |
| } |
| |
| T &operator*() const { |
| MARISA_DEBUG_IF(ptr_ == NULL, MARISA_STATE_ERROR); |
| return *ptr_; |
| } |
| T *operator->() const { |
| MARISA_DEBUG_IF(ptr_ == NULL, MARISA_STATE_ERROR); |
| return ptr_; |
| } |
| T *get() const { |
| return ptr_; |
| } |
| |
| void clear() { |
| scoped_ptr().swap(*this); |
| } |
| void swap(scoped_ptr &rhs) { |
| marisa::swap(ptr_, rhs.ptr_); |
| } |
| |
| private: |
| T *ptr_; |
| |
| // Disallows copy and assignment. |
| scoped_ptr(const scoped_ptr &); |
| scoped_ptr &operator=(const scoped_ptr &); |
| }; |
| |
| } // namespace marisa |
| |
| #endif // MARISA_SCOPED_PTR_H_ |