std::meta::exception
From cppreference.com
| Defined in header <meta>
|
||
class exception : public std::exception
|
(since C++26) | |
Defines a type of object to be thrown on failure by reflection functions.
Objects of type std::meta::exception can only be created and accessed in constant evaluation.
Member functions
(constructor) |
constructs a meta::exception object (public member function) |
what |
returns the explanatory string (public member function) |
u8what |
returns the explanatory string as a std::u8string_view (public member function) |
from |
returns the associated std::meta::info object (public member function) |
where |
returns the associated std::source_location (public member function) |
std::meta::exception::exception
consteval exception( std::u8string_view u8what_arg, std::meta::info from,
std::source_location where = std::source_location::current() ) noexcept;
|
(1) | |
consteval exception( std::string_view what_arg, std::meta::info from,
std::source_location where = std::source_location::current() ) noexcept;
|
(2) | |
consteval exception( const exception& ) = default;
|
(3) | |
consteval exception( exception&& ) = default;
|
(4) | |
Constructs a new std::meta::info object. Initializes the stored values with the corresponding parameters.
1) If
u8what_arg can be represented in the ordinary literal encoding, the explanatory string returned by what() is u8what_arg transcoded from UTF-8 to the ordinary literal encoding; otherwise, a call to what() is not a constant expression.2)
what_arg must be representable in UTF-8.3) Copy constructor is defaulted.
4) Move constructor is defaulted.
std::meta::exception::what
constexpr const char* what() const noexcept override;
|
||
Returns the explanatory string passed at the time of construction, possibly transcoded from UTF-8 to the ordinary literal encoding.
std::meta::exception::u8what
consteval std::u8string_view u8what() const noexcept;
|
||
Returns the explanatory string passed at the time of construction, possibly transcoded from the ordinary literal encoding to UTF-8.
std::meta::exception::from
consteval std::meta::info from() const noexcept;
|
||
Returns the std::meta::info value passed at the time of construction.
std::meta::exception::where
consteval std::source_location where() const noexcept;
|
||
Returns the std::source_location value passed at the time of construction.
Example
| This section is incomplete Reason: no example |