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#ifdef __cplusplus
Class _Nonnull class_;
#else
Class _Nonnull class;
#endif
};
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Registers a selector with the specified name with the runtime.
*
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#ifdef __cplusplus
Class _Nonnull class_;
#else
Class _Nonnull class;
#endif
};
/**
* @brief A policy for object association, see @ref objc_setAssociatedObject.
*/
typedef enum objc_associationPolicy {
/** @brief Associate the object like an assigned property. */
OBJC_ASSOCIATION_ASSIGN = 0,
/** @brief Associate the object like a retained, nonatomic property. */
OBJC_ASSOCIATION_RETAIN_NONATOMIC = 1,
/** @brief Associate the object like a retained property. */
OBJC_ASSOCIATION_RETAIN = OBJC_ASSOCIATION_RETAIN_NONATOMIC | 0x300,
/** @brief Associate the object like a copied, nonatomic property. */
OBJC_ASSOCIATION_COPY_NONATOMIC = 3,
/** @brief Associate the object like a copied property. */
OBJC_ASSOCIATION_COPY = OBJC_ASSOCIATION_COPY_NONATOMIC | 0x300
} objc_associationPolicy;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Registers a selector with the specified name with the runtime.
*
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*
* @param class_ The tag ID for the tagged pointer class to use
* @param value The value the tagged pointer should have
* @return A tagged pointer, or `nil` if it could not be created
*/
extern id _Nullable objc_createTaggedPointer(int class_, uintptr_t value);
/*
* Used by the compiler, but can also be called manually.
*
* These declarations are also required to prevent Clang's implicit
* declarations which include __declspec(dllimport) on Windows.
*/
struct objc_module;
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*
* @param class_ The tag ID for the tagged pointer class to use
* @param value The value the tagged pointer should have
* @return A tagged pointer, or `nil` if it could not be created
*/
extern id _Nullable objc_createTaggedPointer(int class_, uintptr_t value);
/**
* @brief Sets an associated object on the specified object for the specified
* key.
*
* @param object The object on which to set an associated object
* @param key A unique pointer to use as the key for the association
* @param value The object to associate with the specified object
* @param policy The association policy, see @ref objc_associationPolicy
*/
extern void objc_setAssociatedObject(id _Nonnull object,
const void *_Nonnull key, id _Nullable value,
objc_associationPolicy policy);
/**
* @brief Returns the associated object on the specified object for the
* specified key.
*
* @param object The object on which to get the associated object
* @param key The key of the association
* @return The associated object on the specified object for the specified key
*/
extern id _Nullable objc_getAssociatedObject(id _Nonnull object,
const void *_Nonnull key);
/**
* @brief Removes all associated objects for the specified object.
*
* @param object The object on which to remove all associated objects
*/
extern void objc_removeAssociatedObjects(id _Nonnull object);
/*
* Used by the compiler, but can also be called manually.
*
* These declarations are also required to prevent Clang's implicit
* declarations which include __declspec(dllimport) on Windows.
*/
struct objc_module;
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