Tighten the types of some of the machinery surrounding .bzl skyframe inlining

Tighten SkyKey to StarlarkImportLookupValue.Key for the internal functions of StarlarkImportLookupFunction and its inlined (non-Skyframe) caller. This avoids all but one downcast to [...].Key, in compute(), as is expected. Note the naming convention for vars -- "SkyKey skyKey", but "StarlarkImportLookupFunction.Key key".

Also eliminate a redundant case in PackageFunction#computeStarlarkImportMapWithInlining, at the expense of making the quick return path not self-evident; added a comment to compensate.

This is refactoring work toward adding a new kind of .bzl loading context, for Bazel-internal .bzl files.

Work toward #11437.

RELNOTES: None
PiperOrigin-RevId: 312840745
2 files changed
tree: 7ba46c9de0383f3c47194d8b4767ba3afc269327
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
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