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typedef id _Nullable (*IMP)(id _Nonnull object, SEL _Nonnull selector, ...);
/**
* @brief A handler for uncaught exceptions.
*
* @param exception The exception which was not caught.
*/
typedef void (*objc_uncaught_exception_handler_t)(id _Nullable exception);
typedef void (*objc_uncaught_exception_handler)(id _Nullable exception);
/**
* @brief A handler for mutation during enumeration.
*
* @param object The object that was mutated during enumeration
*/
typedef void (*objc_enumeration_mutation_handler_t)(id _Nonnull object);
typedef void (*objc_enumeration_mutation_handler)(id _Nonnull object);
/**
* @brief A struct representing a call to super.
*/
struct objc_super {
/**
* @brief The object on which to perform the super call.
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* @return A copy of the attribute value. You need to call `free()` on it when
* done.
*/
extern char *_Nullable property_copyAttributeValue(
objc_property_t _Nonnull property, const char *_Nonnull name);
/**
* @brief Exits the Objective-C runtime.
* @brief Deinitializes the Objective-C runtime.
*
* This frees all data structures used by the runtime, after which Objective-C
* can no longer be used inside the current process. This is only useful for
* debugging.
* debugging and tests.
*/
extern void objc_exit(void);
extern void objc_deinit(void);
/**
* @brief Sets the handler for uncaught exceptions.
*
* @param handler The new handler for uncaught exceptions
* @return The old handler for uncaught exceptions
*/
extern _Nullable objc_uncaught_exception_handler_t
extern _Nullable objc_uncaught_exception_handler
objc_setUncaughtExceptionHandler(
objc_uncaught_exception_handler_t _Nullable handler);
objc_uncaught_exception_handler _Nullable handler);
/**
* @brief Sets the forwarding handler for unimplemented methods.
*
* @param forward The forwarding handler for regular methods
* @param stretForward The forwarding handler for methods using the struct
* return ABI
*/
extern void objc_setForwardHandler(IMP _Nullable forward,
IMP _Nullable stretForward);
/**
* @brief Sets the handler for mutations during enumeration.
*
* @param handler The handler for mutations during enumeration
*/
extern void objc_setEnumerationMutationHandler(
objc_enumeration_mutation_handler_t _Nullable handler);
objc_enumeration_mutation_handler _Nullable handler);
/**
* @brief Constructs an instance of the specified class in the specified array
* of bytes.
*
* @param class_ The class of which to construct an instance
* @param bytes An array of bytes of at least the length of the instance size.
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