std::contract_violation

C++

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Exception handling exception uncaught_exceptionuncaught_exceptions (C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate bad_exception unexpected (until C++17) unexpected_handler (until C++17) get_unexpected (C++11)(until C++17) set_unexpected (until C++17) Contracts contract_violation (C++20)

Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error tx_exception (TM TS) Error codes Error codes errno Assertions assert system_error facility error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11)

Defined in header <contract>
class contract_violation;		(since C++20)

The class contract_violation describes information about a contract violation. It is generated by a C++ implementation and passed to a contract violation handler when a contract violation is detected.

Member functions

line_number	returns the line number where the contract violation happened (public member function)
file_name	returns the name of the file where the contract violation happened (public member function)
function_name	returns the name of the function where the contract violation happened (public member function)
comment	returns a string describing the predicate of the violated contract (public member function)
assertion_level	returns a string describing the assertion level of the violated contract (public member function)

std::contract_violation::line_number

std::uint_least32_t line_number() const noexcept;

Returns the location of the source code where the contract violation happened. If the name is unknown, an implementation may return 0 instead.

std::contract_violation::file_name

std::string_view file_name() const noexcept;

Returns the name of the the source file where the contract violation happened. If the name is unknown, an implementation may return an empty string_view instead.

std::contract_violation::function_name

std::string_view function_name() const noexcept;

Returns the name of the function where the contract violation happened. If the name is unknown, an implementation may return an empty string_view instead.

std::contract_violation::comment

std::string_view comment() const noexcept;

Returns an implementation-defined string describing the predicate of the violated contract.

std::contract_violation::assertion_level

std::string_view assertion_level() const noexcept;

Returns a string describing the assertion level of the violated contract.