projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // |
| 2 | // Copyright (c) 2010 Artyom Beilis (Tonkikh) | |
| 3 | // | |
| 4 | // Distributed under the Boost Software License, Version 1.0. (See | |
| 5 | // accompanying file LICENSE_1_0.txt or copy at | |
| 6 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 7 | // | |
| 8 | #ifndef BOOST_LOCALE_HOLD_PTR_H | |
| 9 | #define BOOST_LOCALE_HOLD_PTR_H | |
| 10 | ||
| 11 | namespace boost { | |
| 12 | namespace locale { | |
| 13 | /// | |
| 14 | /// \brief a smart pointer similar to std::auto_ptr but it is non-copyable and the | |
| 15 | /// underlying object has the same constness as the pointer itself (unlike an ordinary pointer). | |
| 16 | /// | |
| 17 | template<typename T> | |
| 18 | class hold_ptr { | |
| 19 | hold_ptr(hold_ptr const &other); // non copyable | |
| 20 | hold_ptr const &operator=(hold_ptr const &other); // non assignable | |
| 21 | public: | |
| 22 | /// | |
| 23 | /// Create new empty pointer | |
| 24 | /// | |
| 25 | hold_ptr() : ptr_(0) {} | |
| 26 | /// | |
| 27 | /// Create a pointer that holds \a v, ownership is transferred to smart pointer | |
| 28 | /// | |
| 29 | explicit hold_ptr(T *v) : ptr_(v) {} | |
| 30 | ||
| 31 | /// | |
| 32 | /// Destroy smart pointer and the object it owns. | |
| 33 | /// | |
| 34 | ~hold_ptr() | |
| 35 | { | |
| 36 | delete ptr_; | |
| 37 | } | |
| 38 | ||
| 39 | /// | |
| 40 | /// Get a const pointer to the object | |
| 41 | /// | |
| 42 | T const *get() const { return ptr_; } | |
| 43 | /// | |
| 44 | /// Get a mutable pointer to the object | |
| 45 | /// | |
| 46 | T *get() { return ptr_; } | |
| 47 | ||
| 48 | /// | |
| 49 | /// Get a const reference to the object | |
| 50 | /// | |
| 51 | T const &operator *() const { return *ptr_; } | |
| 52 | /// | |
| 53 | /// Get a mutable reference to the object | |
| 54 | /// | |
| 55 | T &operator *() { return *ptr_; } | |
| 56 | /// | |
| 57 | /// Get a const pointer to the object | |
| 58 | /// | |
| 59 | T const *operator->() const { return ptr_; } | |
| 60 | /// | |
| 61 | /// Get a mutable pointer to the object | |
| 62 | /// | |
| 63 | T *operator->() { return ptr_; } | |
| 64 | ||
| 65 | /// | |
| 66 | /// Transfer an ownership on the pointer to user | |
| 67 | /// | |
| 68 | T *release() { T *tmp=ptr_; ptr_=0; return tmp; } | |
| 69 | ||
| 70 | /// | |
| 71 | /// Set new value to pointer, previous object is destroyed, ownership on new object is transferred | |
| 72 | /// | |
| 73 | void reset(T *p=0) | |
| 74 | { | |
| 75 | if(ptr_) delete ptr_; | |
| 76 | ptr_=p; | |
| 77 | } | |
| 78 | /// Swap two pointers | |
| 79 | void swap(hold_ptr &other) | |
| 80 | { | |
| 81 | T *tmp=other.ptr_; | |
| 82 | other.ptr_=ptr_; | |
| 83 | ptr_=tmp; | |
| 84 | } | |
| 85 | private: | |
| 86 | T *ptr_; | |
| 87 | }; | |
| 88 | ||
| 89 | } // locale | |
| 90 | } // boost | |
| 91 | ||
| 92 | #endif | |
| 93 | // vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4 |