GetFEM  5.4.2
getfem_copyable_ptr.h
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30 ===========================================================================*/
31 /**@file getfem_copyable_ptr.h
32 @author Andriy Andreykiv <andriy.andreykiv@gmail.com>
33 @date October 6th, 2015.
34 @brief A smart pointer that copies the value it points to on copy operations
35 */
36 #pragma once
37 
38 #include <memory>
39 #include <cstddef>
40 
41 namespace getfem {
42 
43 /**
44  A wrapper around a unique_ptr that clones the value on copy
45 */
46 template<class T> class copyable_ptr{
47  std::unique_ptr<T> p_ = std::unique_ptr<T>(nullptr);
48 public:
49  copyable_ptr() = default;
50 
51  copyable_ptr(std::unique_ptr<T> p) : p_(std::move(p)) {}
52 
54  : p_(x.p_ ? std::make_unique<T>(*x.p_) : nullptr) {}
55 
56  copyable_ptr(copyable_ptr<T> &&x) : p_(std::move(*x.p_)) {}
57 
58  copyable_ptr<T> &operator=(const copyable_ptr<T> &x){
59  if (x.p_) p_ = std::make_unique<T>(*x.p_);
60  return *this;
61  }
62 
63  copyable_ptr<T> &operator=(copyable_ptr<T> &&x){
64  p_ = std::move(x.p_);
65  return *this;
66  }
67 
68  operator bool() const {return p_.operator bool();}
69 
70  T& operator*() const {return p_.operator*();}
71 
72  T* operator->() const {return p_.operator->();}
73 };
74 
75 } // namespace getfem
getfem::copyable_ptr
A wrapper around a unique_ptr that clones the value on copy.
Definition: getfem_copyable_ptr.h:46
getfem
GEneric Tool for Finite Element Methods.
Definition: getfem_accumulated_distro.h:46