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dart / sdk / bb8db16297e6b9994b08ecae6ee1dd45a0be587e
commitbb8db16297e6b9994b08ecae6ee1dd45a0be587e[log] [tgz]
authorPaul Berry <paulberry@google.com>Mon Nov 18 14:21:08 2024 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Mon Nov 18 14:21:08 2024 +0000
tree51369a89d9555798499e33f21e3ac2033e21523d
parent47681c79c8bbc8ace565c19e1f21d8d45c96c851 [diff]
[mini_types] Implement and test hashCode and equality logic.

Previously, the `hashCode` and `==` logic for the `Type` hierarchy
used a short-cut: convert the type to a string and then hash or
equality-check the result.

However, that trick won't work for generic function types (which I
intend to implement in a follow-up CL), because generic function types
that are alpha-equivalent (i.e. equivalent except for the names of
type formals) need to be considered equal. So, as preparation for
supporting generic function types, this change adds full
implementations of `hashCode` and `==` for all the classes in the
`Type` hierarchy.

Change-Id: I8312d22cabaeb8c38cd58da80acdb3f068ee5c2b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/395620
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
3 files changed
tree: 51369a89d9555798499e33f21e3ac2033e21523d
  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

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

Visit dart.dev to learn more about the language, tools, and to find codelabs.

Browse pub.dev for more packages and libraries contributed by the community and the Dart team.

Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents in our repo at docs.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

Roadmap

Future plans for Dart are included in the combined Dart and Flutter roadmap on the Flutter wiki.