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A `@convention(block)` closure in Swift is completely compatible with Objective-C and does not need to be wrapped in a `__SwiftValue` box for use. Previously, it was bridged verbatim when appearing by itself, but could end up boxed when it went through array bridging. The test verifies that: * Objective-C does not see a `__SwiftValue` box * Swift `type(of:)` does not see a `__SwiftValue` box * Objective-C can actually call the closure Resolves rdar://138132321
20 lines
399 B
Objective-C
20 lines
399 B
Objective-C
#import <objc/runtime.h>
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#import "Cast_Blocks.h"
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BOOL ObjCThinksObjectIsSwiftValue(id obj) {
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Class cls = object_getClass(obj);
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const char *name = class_getName(cls);
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if (strcmp(name, "__SwiftValue") == 0) {
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return TRUE;
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} else {
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return FALSE;
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}
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}
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void ObjCCanCallBlock(id block_as_id) {
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typedef void(^blockType)(void);
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blockType block = (blockType)block_as_id;
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block();
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}
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