Crate objc_sys

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Raw bindings to Objective-C runtimes

These bindings contain almost no documentation, so it is highly recommended to read the documentation of the original libraries:

See also the README.md for more background information, and for how to configure the desired runtime.

Structs

objc_class

An opaque type that represents an Objective-C class.

objc_ivar

An opaque type that represents an instance variable.

objc_method

A type that represents a method in a class definition.

objc_method_description

Describes an Objective-C method.

objc_object

An opaque type that represents an object / an instance of a class.

objc_property

An opaque type that describes a property in a class.

objc_property_attribute_t

Describes an Objective-C property attribute.

objc_protocol

Opaque type for Objective-C protocols.

objc_selector

An opaque type that represents a method selector.

objc_super

Specifies data used when sending messages to superclasses.

Constants

NO

The equivalent of false for Objective-C’s BOOL type.

NSIntegerMax

The maximum value for an NSInteger.

NSIntegerMin

The minimum value for an NSInteger.

NSUIntegerMax

The maximum value for an NSUInteger.

Nil

A quick alias for a null_mut class.

OBJC_ASSOCIATION_ASSIGN
OBJC_ASSOCIATION_COPY
OBJC_ASSOCIATION_COPY_NONATOMIC
OBJC_ASSOCIATION_RETAIN
OBJC_ASSOCIATION_RETAIN_NONATOMIC
OBJC_SYNC_NOT_INITIALIZED

Only relevant before macOS 10.13

OBJC_SYNC_NOT_OWNING_THREAD_ERROR
OBJC_SYNC_SUCCESS
OBJC_SYNC_TIMED_OUT

Only relevant before macOS 10.13

YES

The equivalent of true for Objective-C’s BOOL type.

nil

A quick alias for a null_mut object / instance.

Functions

_objc_msgForward⚠
_objc_msgForward_stret⚠

Not available on target_arch = "aarch64"

class_addIvar⚠
class_addMethod⚠
class_addProperty⚠
class_addProtocol⚠
class_conformsToProtocol⚠
class_copyIvarList⚠
class_copyMethodList⚠
class_copyPropertyList⚠
class_copyProtocolList⚠
class_createInstance⚠
class_getClassMethod⚠
class_getClassVariable⚠
class_getImageName⚠
class_getInstanceMethod⚠
class_getInstanceSize⚠
class_getInstanceVariable⚠
class_getIvarLayout⚠
class_getMethodImplementation⚠
class_getMethodImplementation_stret⚠

Not available on target_arch = "aarch64", always available on ObjFW

class_getName⚠
class_getProperty⚠
class_getSuperclass⚠
class_getVersion⚠
class_getWeakIvarLayout⚠
class_isMetaClass⚠
class_replaceMethod⚠
class_replaceProperty⚠
class_respondsToSelector⚠
class_setIvarLayout⚠
class_setVersion⚠
class_setWeakIvarLayout⚠
imp_getBlock⚠
imp_implementationWithBlock⚠
imp_removeBlock⚠
ivar_getName⚠
ivar_getOffset⚠
ivar_getTypeEncoding⚠
method_copyArgumentType⚠
method_copyReturnType⚠
method_exchangeImplementations⚠
method_getArgumentType⚠
method_getDescription⚠
method_getImplementation⚠
method_getName⚠
method_getNumberOfArguments⚠
method_getReturnType⚠
method_getTypeEncoding⚠
method_invoke⚠
method_invoke_stret⚠

Not available on target_arch = "aarch64"

method_setImplementation⚠
objc_allocateClassPair⚠
objc_allocateProtocol⚠
objc_autorelease⚠
objc_autoreleasePoolPop⚠
objc_autoreleasePoolPush⚠
objc_autoreleaseReturnValue⚠
objc_begin_catch⚠
objc_constructInstance⚠Deprecated
objc_copyClassList⚠
objc_copyClassNamesForImage⚠
objc_copyImageNames⚠
objc_copyProtocolList⚠
objc_copyWeak⚠
objc_destroyWeak⚠
objc_destructInstance⚠Deprecated
objc_disposeClassPair⚠
objc_duplicateClass⚠
objc_end_catch⚠
objc_enumerationMutation⚠
objc_exception_rethrow⚠
objc_exception_throw⚠

See objc-exception.h.

objc_getAssociatedObject⚠
objc_getClass⚠
objc_getClassList⚠
objc_getFutureClass⚠Deprecated
objc_getMetaClass⚠
objc_getProtocol⚠
objc_getRequiredClass⚠
objc_initWeak⚠
objc_loadWeak⚠
objc_loadWeakRetained⚠
objc_lookUpClass⚠
objc_moveWeak⚠
objc_msgSend⚠
objc_msgSendSuper⚠
objc_msgSendSuper_stret⚠

Not available on target_arch = "aarch64"

objc_msgSend_fp2ret⚠

Only available on target_arch = "x86_64"

objc_msgSend_fpret⚠

Only available on target_arch = "x86_64" or target_arch = "x86"

objc_msgSend_stret⚠

Not available on target_arch = "aarch64"

objc_registerClassPair⚠
objc_registerProtocol⚠
objc_release⚠
objc_removeAssociatedObjects⚠
objc_retain⚠
objc_retainAutorelease⚠
objc_retainAutoreleaseReturnValue⚠
objc_retainAutoreleasedReturnValue⚠
objc_retainBlock⚠
objc_setAssociatedObject⚠
objc_setEnumerationMutationHandler⚠
objc_setExceptionMatcher⚠
objc_setExceptionPreprocessor⚠
objc_setForwardHandler⚠
objc_setUncaughtExceptionHandler⚠
objc_storeStrong⚠
objc_storeWeak⚠
objc_sync_enter⚠
objc_sync_exit⚠
object_copy⚠Deprecated
object_dispose⚠Deprecated
object_getClass⚠
object_getClassName⚠
object_getIndexedIvars⚠
object_getInstanceVariable⚠Deprecated
object_getIvar⚠
object_setClass⚠
object_setInstanceVariable⚠Deprecated
object_setIvar⚠
property_copyAttributeList⚠
property_copyAttributeValue⚠
property_getAttributes⚠
property_getName⚠
protocol_addMethodDescription⚠
protocol_addProperty⚠
protocol_addProtocol⚠
protocol_conformsToProtocol⚠
protocol_copyMethodDescriptionList⚠
protocol_copyPropertyList⚠
protocol_copyProtocolList⚠
protocol_getMethodDescription⚠
protocol_getName⚠
protocol_getProperty⚠
protocol_isEqual⚠
sel_getName⚠
sel_getUid⚠
sel_isEqual⚠
sel_isMapped⚠
sel_registerName⚠

Type Definitions

BOOL

The Objective-C BOOL type.

IMP

A nullable pointer to the start of a method implementation.

NSInteger

A signed integer value type.

NSUInteger

Describes an unsigned integer.

SEL

An immutable pointer to a selector.

id

A mutable pointer to an object / instance.

objc_AssociationPolicy
objc_exception_matcher

Remember that this is non-null!

objc_exception_preprocessor

Remember that this is non-null!

objc_uncaught_exception_handler

Remember that this is non-null!