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Michael Ilseman
7c9d53a0a0
ns_error_domain can now be used to communicate with the ClangImporter when an enum has an associated error domain string. In this case, when we import it as a Swift enum, we can also synthesize a conformance to _BridgedNSError. This allows the creation of something like NS_ERROR_ENUM, in which the developer can declare an enum for the purposes of error handling. Adds Sema and executable tests demonstrating this funcionality. In order for the imported ns_error_domain bridging to work, we have to at some point forcibly pull in a _BridgedNSError conformance, as one will not be pulled in normally. This is a problem, and is explicitly signaled in the provided test case
14 lines
389 B
Objective-C
14 lines
389 B
Objective-C
#define NS_ERROR_ENUM(_type, _name, _domain) \
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enum _name : _type _name; \
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enum __attribute__((ns_error_domain(_domain))) _name : _type
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@class NSString;
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extern NSString *const TestErrorDomain;
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typedef NS_ERROR_ENUM(int, TestError, TestErrorDomain) {
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TENone,
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TEOne,
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TETwo,
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};
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TestError getErr();
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