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60 lines
1.3 KiB
Objective-C
60 lines
1.3 KiB
Objective-C
#include "objc/runtime.h"
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#include "class.h"
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typedef struct _NSZone NSZone;
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@interface RootMethods
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- (id)alloc;
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- (id)allocWithZone: (NSZone*)aZone;
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- (id)init;
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@end
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#include <stdio.h>
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/**
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* Equivalent to [cls alloc]. If there's a fast path opt-in, then this skips the message send.
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*/
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id
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objc_alloc(Class cls)
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{
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if (UNLIKELY(!objc_test_class_flag(cls->isa, objc_class_flag_initialized)))
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{
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objc_send_initialize(cls);
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}
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if (objc_test_class_flag(cls->isa, objc_class_flag_fast_alloc_init))
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{
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return class_createInstance(cls, 0);
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}
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return [cls alloc];
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}
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/**
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* Equivalent to [cls allocWithZone: null]. If there's a fast path opt-in, then this skips the message send.
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*/
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id
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objc_allocWithZone(Class cls)
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{
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if (UNLIKELY(!objc_test_class_flag(cls->isa, objc_class_flag_initialized)))
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{
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objc_send_initialize(cls);
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}
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if (objc_test_class_flag(cls->isa, objc_class_flag_fast_alloc_init))
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{
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return class_createInstance(cls, 0);
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}
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return [cls allocWithZone: NULL];
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}
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/**
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* Equivalent to [[cls alloc] init]. If there's a fast path opt-in, then this
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* skips the message send.
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*/
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id
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objc_alloc_init(Class cls)
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{
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id instance = objc_alloc(cls);
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if (objc_test_class_flag(cls, objc_class_flag_fast_alloc_init))
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{
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return instance;
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}
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return [instance init];
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}
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