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Standard library header <contracts> (C++26)

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C++
Standard library headers

This header is part of the language support library.

Contents

Types

Defined in namespace std::contracts
(C++26)
the kind of the contract assertion violated
(enum)
(C++26)
the evaluation semantic when the contract violation occurs
(enum)
(C++26)
the reason that causes the contract violation
(enum)
(C++26)
the type holding the contract-violation information
(class)

Functions

Defined in namespace std::contracts
(C++26)
invokes the default contract-violation handler
(function)

Synopsis 

// all freestanding
namespace std::contracts {
  enum class assertion_kind : /* unspecified */ {
    pre = 1,
    post = 2,
    assert = 3
  };
  enum class evaluation_semantic : /* unspecified */ {
    ignore = 1,
    observe = 2,
    enforce = 3,
    quick_enforce = 4
  };
  enum class detection_mode : /* unspecified */ {
    predicate_false = 1,
    evaluation_exception = 2
  };
  // class contract_violation
  class contract_violation;
  void invoke_default_contract_violation_handler(const contract_violation&);
}

Class std :: contracts :: contract_violation 

namespace std::contracts {
  class contract_violation
  {
    // no user−accessible constructor
  public:
    contract_violation(const contract_violation&) = delete;
    contract_violation& operator=(const contract_violation&) = delete;
    /* see description */ ~contract_violation();
    const char* comment() const noexcept;
    contracts::detection_mode detection_mode() const noexcept;
    exception_ptr evaluation_exception() const noexcept;
    bool is_terminating() const noexcept;
    assertion_kind kind() const noexcept;
    source_location location() const noexcept;
    evaluation_semantic semantic() const noexcept;
  };
}