spot  1.1.3
unique_ptr.hh
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1 // -*- coding: utf-8 -*-
2 // Copyright (C) 2012 Laboratoire de Recherche et
3 // Développement de l'Epita (LRDE).
4 //
5 // This file is part of Spot, a model checking library.
6 //
7 // Spot is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General Public License as published by
9 // the Free Software Foundation; either version 3 of the License, or
10 // (at your option) any later version.
11 //
12 // Spot is distributed in the hope that it will be useful, but WITHOUT
13 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 // License for more details.
16 //
17 // You should have received a copy of the GNU General Public License
18 // along with this program. If not, see <http://www.gnu.org/licenses/>.
19 
20 #ifndef SPOT_MISC_UNIQUE_PTR_HH
21 # define SPOT_MISC_UNIQUE_PTR_HH
22 
23 namespace spot
24 {
27  template <typename T>
28  class unique_ptr
29  {
30  typedef T* pointer;
31  public:
33  : ptr_(ptr)
34  {
35  }
36 
38  {
39  delete ptr_;
40  }
41 
42  operator pointer()
43  {
44  return ptr_;
45  }
46 
47  pointer
49  {
50  return ptr_;
51  }
52 
53  private:
55 
56  // This copy gives the ownership of the pointer to the new copy.
57  // Can only be used by make_unique.
59  {
60  unique_ptr& non_const_up = const_cast<unique_ptr&>(up);
61  ptr_ = non_const_up.ptr_;
62  non_const_up.ptr_ = 0;
63  }
64 
65  // Allow `make_unique' to have an access to the private copy.
66  template <typename V> friend unique_ptr<V> make_unique(V* ptr);
67 
69  };
70 
71 
73  template <typename T>
74  inline unique_ptr<T> make_unique(T* ptr)
75  {
76  return unique_ptr<T>(ptr);
77  }
78 }
79 
80 
81 #endif // !SPOT_MISC_UNIQUE_PTR_HH

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