std::meta::exception - cppreference.com
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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
constructs a meta::exception object (public member function) | |
| returns the explanatory string (public member function) | |
| returns the explanatory string as a std::u8string_view (public member function) | |
| returns the associated std::meta::info object (public member function) | |
| 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; |
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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; |
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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; |
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Returns the std::meta::info value passed at the time of construction.
std::meta::exception::where
consteval std::source_location where() const noexcept; |
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Returns the std::source_location value passed at the time of construction.