15 #ifndef _FASTCDR_XCDR_OPTIONAL_HPP_ 16 #define _FASTCDR_XCDR_OPTIONAL_HPP_ 21 #include "detail/optional.hpp" 22 #include "../exceptions/BadOptionalAccessException.hpp" 57 const T& val) noexcept
59 ::new(&storage_.
val_)T(val);
67 ::new(&storage_.
val_)T(std::move(val));
75 if (val.storage_.engaged_)
77 ::new(&storage_.
val_)T(val.storage_.val_);
86 if (val.storage_.engaged_)
88 ::new(&storage_.
val_)T(std::move(val.storage_.val_));
105 storage_.
val_.T(std::forward<Args>(_args)...);
116 bool initial_engaged =
false)
122 storage_.
engaged_ = initial_engaged;
125 ::new(&storage_.
val_)T();
143 return storage_.
val_;
160 return storage_.
val_;
177 return std::move(storage_.
val_);
194 return std::move(storage_.
val_);
215 ::new(&storage_.
val_)T(opt.storage_.
val_);
225 storage_.
engaged_ = opt.storage_.engaged_;
226 if (opt.storage_.engaged_)
228 ::new(&storage_.
val_)T(std::move(opt.storage_.val_));
238 ::new(&storage_.
val_)T(val);
248 ::new(&storage_.
val_)T(std::move(val));
285 return storage_.
val_;
297 return storage_.
val_;
309 return std::move(storage_.
val_);
321 return std::move(storage_.
val_);
333 return std::addressof(storage_.
val_);
345 return std::addressof(storage_.
val_);
349 explicit operator bool() const noexcept
362 #endif //_FASTCDR_XCDR_OPTIONAL_HPP_ optional(const optional< T > &val) noexcept
Copy constructor.
Definition: optional.hpp:72
static constexpr nullopt_t nullopt
nullopt is a constant of type nullopt_t that is used to indicate optional type with uninitialized sta...
Definition: optional.hpp:40
T type
Definition: optional.hpp:50
optional & operator=(const optional &opt)
Assigns content from an optional.
Definition: optional.hpp:208
void reset(bool initial_engaged=false)
Reset the state of the optional.
Definition: optional.hpp:115
T & operator*() &noexcept
Accesses the contained value.
Definition: optional.hpp:283
bool has_value() const
Checks whether the optional contains a value.
Definition: optional.hpp:202
void emplace(Args &&... _args)
Constructs the contained value in-place.
Definition: optional.hpp:101
optional(const T &val) noexcept
Copy constructor from an instance of the templated class.
Definition: optional.hpp:56
bool operator==(const optional &opt_val) const
Compares optional values.
Definition: optional.hpp:262
T * operator->() noexcept
Accesses the contained value.
Definition: optional.hpp:331
optional(optional< T > &&val) noexcept
Move constructor.
Definition: optional.hpp:83
optional()=default
Default constructor.
An empty class type used to indicate optional type with uninitialized state.
Definition: optional.hpp:28
T & value() &
Returns the contained value.
Definition: optional.hpp:135
~optional()=default
Destructor.
Definition: fixed_size_string.hpp:32
constexpr nullopt_t(int)
Definition: optional.hpp:30
const T & value() const &
Returns the contained value.
Definition: optional.hpp:152
T && value() &&
Returns the contained value.
Definition: optional.hpp:169
bool engaged_
Definition: optional.hpp:32
const T && value() const &&
Returns the contained value.
Definition: optional.hpp:186
optional(T &&val) noexcept
Move constructor from an instance of the templated class.
Definition: optional.hpp:64
static const char *const BAD_OPTIONAL_ACCESS_MESSAGE_DEFAULT
Default message used in the library.
Definition: BadOptionalAccessException.hpp:78
T val_
Definition: optional.hpp:29
bool operator!=(const optional &opt_val) const
Compares optional values.
Definition: optional.hpp:270
This class template manages an optional contained value, i.e.
Definition: optional.hpp:46
This class is thrown as an exception when accessing the value of a null optional. ...
Definition: BadOptionalAccessException.hpp:27