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Allow upcast in unique_ref assignment

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This commit is contained in:
Sebastian Messmer 2015-06-28 17:40:16 +02:00
parent 6442512877
commit 0edf28402c
1 changed files with 6 additions and 1 deletions
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7
pointer/unique_ref.h
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@ -28,13 +28,18 @@ class unique_ref final {
public: public:
unique_ref(unique_ref&& from): _target(std::move(from._target)) {} unique_ref(unique_ref&& from): _target(std::move(from._target)) {}
// TODO Test this dynamic-cast-allowing move constructor // TODO Test this upcast-allowing move constructor
template<typename U> unique_ref(unique_ref<U>&& from): _target(std::move(from._target)) {} template<typename U> unique_ref(unique_ref<U>&& from): _target(std::move(from._target)) {}
unique_ref& operator=(unique_ref&& from) { unique_ref& operator=(unique_ref&& from) {
_target = std::move(from._target); _target = std::move(from._target);
return *this; return *this;
} }
// TODO Test this upcast-allowing assignment
template<typename U> unique_ref& operator=(unique_ref<U>&& from) {
_target = std::move(from._target);
return *this;
}
typename std::add_lvalue_reference<T>::type operator*() const& { typename std::add_lvalue_reference<T>::type operator*() const& {
return *_target; return *_target;