Add a pass for suggesting elements that are not yet imported

This CL makes 3 different changes. I'm happy to split them out into
smaller CLs if you'd like me to.

The first is to add the class `NotImportedCompletionPass`, which is the
proposed replacement for the `NotImportedContributor`. I believe that
the pass is complete, but it currently doesn't contribute any
suggestions because the methods invoked by the two "operations" aren't
yet implemented.

That said, it does do real work in terms of searching through the
libraries that aren't imported. That work is currently duplicated by
the contributor, which would likely cause a performance degredation.
As a result, I've commented out the invocation of the pass (but have
verified that every test passes when it's not commented out).

The second is to start suggesting extension members from local
extensions. I'm not sure why, but prior to this CL they appear to have
only been suggested by the `NotImportedContributor`, which isn't
always run. I'm not sure where members from imported extensions are
currently being imported, but I'll figure that out before I remove
the `NotImportedContributor`.

The third is to change the element being compared against when
computing the inheritance distance. We were previously using the
container of the element being suggested, which caused the inheritance
distance to always be the same, no matter what the type hierarchy
looks like. We need better tests for relevance, but I didn't add any
in this CL.

Change-Id: Ic82a15cab5d022f89da234a8b31bc6bca34ccb5c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363760
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>
10 files changed
tree: 38a7209f2bb724d598027e838a24ca1c908dc48a
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .style.yapf
  21. AUTHORS
  22. BUILD.gn
  23. CHANGELOG.md
  24. codereview.settings
  25. CONTRIBUTING.md
  26. DEPS
  27. LICENSE
  28. OWNERS
  29. PATENT_GRANT
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. sdk.code-workspace
  34. sdk_args.gni
  35. sdk_packages.yaml
  36. SECURITY.md
  37. WATCHLISTS
README.md

Dart

An approachable, portable, and productive language for high-quality apps on any platform

Dart is:

  • Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.

  • Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.

  • Productive: Make changes iteratively: use hot reload to see the result instantly in your running app. Diagnose app issues using DevTools.

Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:

  • Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.

  • Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).

Dart platforms illustration

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See LICENSE and PATENT_GRANT.

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There are more documents on our wiki.

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