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dart / sdk / 0ae2ac12773f5e2e17271f5ab9966fbe4331d31c
commit0ae2ac12773f5e2e17271f5ab9966fbe4331d31c[log] [tgz]
authorPaul Berry <paulberry@google.com>Tue Feb 13 23:28:19 2024 +0000
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Tue Feb 13 23:28:19 2024 +0000
tree2df62c9ebb9a155c9f14ef1c7ac9d86d8b346b7f
parentc9e2b012b1132a4fc10ee9a8793651f6b1c807ba [diff]
Language test of record demotion behavior.

When a local variable is promoted to a record type, and then an
assignment statement is used to assign a record literal to that local
variable, if the fields of the new record literal are not assignable
to the fields of the promoted record type, that's not a problem; both
the analyzer and front end agree that the local variable is simply
demoted.

But the spec implies that if the old and new record _shapes_ are the
same, then a compile-time error will occur instead of a demotion. I've
created https://github.com/dart-lang/language/pull/3613 to bring the
spec in line with the implementations. This test demonstrates the
current behavior of the implementations, and makes sure that it
doesn't regress.

Change-Id: I0eacd7ca7f6579a35dbc34687113a2112418f368
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/352462
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
1 file changed
tree: 2df62c9ebb9a155c9f14ef1c7ac9d86d8b346b7f
  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. SECURITY.md
  36. 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 on our wiki.

Contributing to Dart

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

You can also contribute patches, as described in Contributing.