Google Git
Sign in
dart / sdk / e6f188b3faa02089233afd30d5632ee37f23f03c
commite6f188b3faa02089233afd30d5632ee37f23f03c[log] [tgz]
authorNate Biggs <natebiggs@google.com>Fri Aug 22 20:48:35 2025 -0700
committerCommit Queue <dart-scoped@luci-project-accounts.iam.gserviceaccount.com>Fri Aug 22 20:48:35 2025 -0700
tree00a455253388b7edb3b27597cc4ab543961a4b41
parentdab1af86db75ee38c34464ac02b27444d27712c3 [diff]
[ddc] Avoid revisiting subexpressions during hot reload invocation rewriting.

In extreme cases with deeply nested invocations in closures, this can lead to an exponential recursive call pattern.

For example: https://github.com/spebbe/dartz/blob/8bf79e746d11e6a66c868027e5e1a25fdd270f45/lib/src/either.dart#L108

Moves all nested checks onto a single branch so that there is a single branch with no checks when the generation is the same, and another branch with all the necessary checks when the generation is different.

Bug: https://github.com/flutter/flutter/issues/173700
Change-Id: I3167a96e3ead67fd1d5c763ef2a7309d82c1a7c6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/445540
Commit-Queue: Nate Biggs <natebiggs@google.com>
Reviewed-by: Nicholas Shahan <nshahan@google.com>
2 files changed
tree: 00a455253388b7edb3b27597cc4ab543961a4b41
  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. pubspec.yaml
  32. README.dart-sdk
  33. README.md
  34. sdk.code-workspace
  35. sdk_args.gni
  36. sdk_packages.yaml
  37. SECURITY.md
  38. 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.