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https://github.com/darlinghq/darling-objc4.git
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87 lines
2.2 KiB
Objective-C
87 lines
2.2 KiB
Objective-C
// TEST_CONFIG
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#include "test.h"
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#include "testroot.i"
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#include <objc/runtime.h>
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#include <objc/objc-internal.h>
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#if OBJC_HAVE_TAGGED_POINTERS
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@interface TagSuperclass: TestRoot
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- (void)test;
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@end
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@implementation TagSuperclass
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- (void)test {}
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@end
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int main()
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{
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Class classes[OBJC_TAG_Last52BitPayload + 1] = {};
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__block uintptr_t expectedPayload;
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__block uintptr_t sawPayload;
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__block int sawTag;
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for (int i = 0; i <= OBJC_TAG_Last52BitPayload; i++) {
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objc_tag_index_t tag = (objc_tag_index_t)i;
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if (i > OBJC_TAG_Last60BitPayload && i < OBJC_TAG_First52BitPayload)
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continue;
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if (_objc_getClassForTag(tag) != nil)
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continue;
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char *name;
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asprintf(&name, "Tag%d", i);
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classes[i] = objc_allocateClassPair([TagSuperclass class], name, 0);
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free(name);
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IMP testIMP = imp_implementationWithBlock(^(void *self) {
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testassert(i == _objc_getTaggedPointerTag(self));
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testassert(expectedPayload == _objc_getTaggedPointerValue(self));
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sawPayload = _objc_getTaggedPointerValue(self);
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sawTag = i;
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});
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class_addMethod(classes[i], @selector(test), testIMP, "v@@");
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objc_registerClassPair(classes[i]);
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_objc_registerTaggedPointerClass(tag, classes[i]);
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}
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for (int i = 0; i <= OBJC_TAG_Last52BitPayload; i++) {
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objc_tag_index_t tag = (objc_tag_index_t)i;
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if (classes[i] == nil)
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continue;
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for (int byte = 0; byte <= 0xff; byte++) {
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uintptr_t payload;
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memset(&payload, byte, sizeof(payload));
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if (i <= OBJC_TAG_Last60BitPayload)
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payload >>= _OBJC_TAG_PAYLOAD_RSHIFT;
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else
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payload >>= _OBJC_TAG_EXT_PAYLOAD_RSHIFT;
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expectedPayload = payload;
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id obj = (__bridge id)_objc_makeTaggedPointer(tag, payload);
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[obj test];
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testassert(sawPayload == payload);
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testassert(sawTag == i);
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}
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}
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succeed(__FILE__);
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}
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#else
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int main()
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{
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succeed(__FILE__);
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}
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#endif
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