getErrorDomainStringForObjC() now includes the parent types in the error domain string. Its implementation does not support generic types or private discriminators, but those types can’t be PrintAsObjC’d anyway, so we should never see them.
Otherwise we generate a call to String(reflecting:), which correctly handles many things we may not be able to (like private types), and which matches the default implementation of Error._domain.
Completely mechanical changes:
- Explicit @objc in a few places
- Some imported APIs changed
- For the mix-and-match tests, just test version 4/5 instead of 3/4
When working with Error types with unsigned raw values, numeric-cast into
a UInt and then map the bits over to an Int so we preserve values not
representable in an Int without wrapping.
Thanks to @jrose-apple for pointing this out!
Provide default implementations for all of the CustomNSError requirements:
* errorDomain: default to the name of the enum type
* errorCode: default to the same thing "_code" gets, e.g., the enum tag or
raw value
* errorUserInfo: default to empty
This makes it significantly easier to customize just one aspect of the
NSError view of an error type, e.g., just the user-info dictionary,
without having to write boilerplate for the others. This was actually
part of SE-0112, but I missed it in the original implementation and we
thought it was an amendment.
Fixes rdar://problem/23511842.
