4.2 KiB
[support.contract.violation]
17 Language support library [support]
17.10 Contract-violation handling [support.contract]
17.10.3 Class contract_violation [support.contract.violation]
The class contract_violation defines the type of objects used to represent a contract violation that has been detected during the evaluation of a contract assertion with a particular evaluation semantic ([basic.contract.eval]).
Objects of this type can be created only by the implementation.
It isimplementation-defined whether the destructor is virtual.
const char* comment() const noexcept;
Returns: Animplementation-definedntmbs in the ordinary literal encoding ([lex.charset]).
Recommended practice: The string returned should contain a textual representation of the predicate of the violated contract assertion or an empty string if storing a textual representation is undesired.
[Note 1:
The string can represent a truncated, reformatted, or summarized rendering of the predicate, before or after preprocessing.
â end note]
contracts::detection_mode detection_mode() const noexcept;
Returns: The enumerator value corresponding to the manner in which the contract violation was identified.
exception_ptr evaluation_exception() const noexcept;
Returns: If the contract violation occurred because the evaluation of the predicate exited via an exception, an exception_ptr object that refers to that exception or a copy of that exception; otherwise, a null exception_ptr object.
bool is_terminating() const noexcept;
Returns: true if the evaluation semantic is a terminating semantic ([basic.contract.eval]); otherwise, false.
assertion_kind kind() const noexcept;
Returns: The enumerator value corresponding to the syntactic form of the violated contract assertion.
source_location location() const noexcept;
Returns: A source_location object withimplementation-defined value.
Recommended practice: The value returned should be a default constructed source_location object or a value identifying the violated contract assertion:
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When possible, if the violated contract assertion was a precondition, the source location of the function invocation should be returned.
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Otherwise, the source location of the contract assertion should be returned.
evaluation_semantic semantic() const noexcept;
Returns: The enumerator value corresponding to the evaluation semantic with which the violated contract assertion was evaluated.