Running the SourceKit stress tester with verification of solver-based cursor info returned quite a few differences but in all of them, the old AST-based implementation was actually incorrect. So, instead of verifying the results, deliver the results from solver-baesd cursor info and only fall back to AST-based cursor info if the solver-based implementation returned no results.
rdar://103369449
This brings up the ability to compute cursor info results using the completion-like type checking paradigm, which an reuse ASTContexts and doesn’t need to type check the entire file.
For now, the new implementation only supports cursor info on `ValueDecl`s (not on references) because they were easiest to implement. More cursor info kinds are coming soon.
At the moment, we only run the new implementation in a verification mode: It is only invoked in assert toolchains and when run, we check that the results are equivalent to the old implementation. Once more cursor info kinds are implemented and if the SourceKit stress tester doesn’t find any verification issues, we can enable the new implementation, falling back to the old implementation if the new one didn’t produce any results.
Previously, requests would fail silently by returning an empty struct
in the response.
With this change, responses will properly report fail with the internal
error.
Previously, requests would fail silently by returning an empty struct
in the response.
With this change, responses will properly report fail with the internal
error.
When enabled, send a notification before/after every "compilation",
which for now means `performSema`. This piggy-backs and modifies some
existing code that we had for "tracing" operations in sourcekitd that
unfortunately was untested. At least now some of the basic parts are
tested via the new notifications.
Part of rdar://38438512
