Copyright ©1995 by NeXT Computer, Inc.  All Rights Reserved.

Functions

Class Functions Create a new instance of a class

	id	class_createInstance(Class aClass, unsigned int indexedIvarBytes)
	id	class_createInstanceFromZone(Class aClass, unsigned int indexedIvarBytes, NXZone *zone)

Get the class template for an instance variable

Ivar

class_getInstanceVariable(Class aClass, const char *variableName)

Get, add, and remove methods

	Method	class_getInstanceMethod(Class aClass, SEL aSelector)
	Method	class_getClassMethod(Class aClass, SEL aSelector)
	void	class_addMethods(Class aClass, struct objc_method_list *methodList)
	void	class_removeMethods(Class aClass, struct objc_method_list *methodList)

Pose as the superclass

Class

class_poseAs(Class theImposter, Class theSuperclass)

Set and get the class version

	void	class_setVersion(Class aClass, int versionNumber)
	int	class_getVersion(Class aClass)

System Functions Manage run-time structures

	id	objc_getClass(const char *aClassName)
	id	objc_lookUpClass(const char *aClassName)
	id	objc_getMetaClass(const char *aClassName)
	NXHashTable *	objc_getClasses(void)
	void	objc_addClass(Class aClass)
	Module *	objc_getModules(void)

Dynamically load and unload classes

	long	objc_loadModules(char *files[], NXStream *stream, void (*callback)(Class, Category), struct mach_header **header, char *debugFilename)
	long	objc_unloadModules(NXStream *stream, void (*callback)(Class, Category))

Send messages at run time

	id	objc_msgSend(id theReceiver, SEL theSelector, ...)
	id	objc_msgSendSuper(struct objc_super *superContext, SEL theSelector, ...)
	id	objc_msgSendv(id theReceiver, SEL theSelector, unsigned int argSize, marg_list argFrame)

Make the run-time system thread safe

void

objc_setMultithreaded(BOOL flag)

Object Functions Manage object memory

	id	object_dispose(Object *anObject)
	id	object_copy(Object *anObject, unsigned int indexedIvarBytes)
	id	object_copyFromZone(Object *anObject, unsigned int indexedIvarBytes, NXZone *zone)
	id	object_realloc(Object *anObject, unsigned int numBytes)
	id	object_reallocFromeZone(Object *anObject, unsigned int numBytes, NXZone *zone)

Return the class name

const char *

object_getClassName(id anObject)

Set and get instance variables

	Ivar	object_setInstanceVariable(id anObject, const char *variableName, void *value)
	Ivar	object_getInstanceVariable(id anObject, const char *variableName, void **value)

Return a pointer to an object's extra memory

void *

object_getIndexedIvars(id anObject)

Method Functions and Macros Get information about a method

	unsigned int	method_getNumberOfArguments(Method aMethod)
	unsigned int	method_getSizeOfArguments(Method aMethod)
	unsigned int	method_getArgumentInfo(Method aMethod, int index, const char **type, int *offset)

Examine and alter method argument values

	type-name	marg_getValue(marg_list argFrame, int offset, type-name)
	type-name *	marg_getRef(marg_list argFrame, int offset, type-name)
	void	marg_setValue(marg_list argFrame, int offset, type-name, type-name value)

Selector Functions Match method names with method selectors

	SEL	sel_getUid(const char *aName)
	const char *	sel_getName(SEL aSelector)

Determine whether a selector is valid

BOOL

sel_isMapped(SEL aSelector)

Register a method name

SEL

sel_registerName(const char *aName)