swift

a986d743 - [NFC] Implement a small DSL to create metadata objects in unit tests

[NFC] Implement a small DSL to create metadata objects in unit tests Some parts of the type metadata system are difficult to unit-test because they rely on structures that contain relative references, which the C compiler cannot generate. We have traditionally just relied on integration testing with the compiler. For constrained existentials, I wanted to do better, so I spent a few days hacking up this little system which can generate graphs of objects with relative references to one another. Currently it's missing the ability to generate a lot of things which I didn't need in order to adequately test the metadata system for constrained existentials.