Revert "Reapply "Avoid computing the URI scanner tables at runtime.""

This reverts commit 4c7110332e2c81366b6e85cb231a59840e370cd6.

Reason for revert: Still breaks the same tests, see b/242715525

Original change's description:
> Reapply "Avoid computing the URI scanner tables at runtime."
> This reverts commit 855e1cd975feae07822187f226568130a0fcfbe9.
> The blocking issue in internal test code is assumed fixed.
> Change-Id: I74e0be130d149a45f77dc90c354916308b76b741
> Reviewed-on:
> Commit-Queue: Lasse Nielsen <>
> Reviewed-by: Martin Kustermann <>
> Auto-Submit: Lasse Nielsen <>,

Change-Id: I391d2eb6dd9ae7367f656eaaaa7f9aeb1c31e0f7
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-by: Alexander Thomas <>
Commit-Queue: Ilya Yanok <>
Reviewed-by: Ilya Yanok <>
Bot-Commit: Rubber Stamper <>
2 files changed
tree: 9074fb5dd2f00bc133d988076e653a8064f98961
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. samples-dev/
  10. samples_2/
  11. sdk/
  12. tests/
  13. third_party/
  14. tools/
  15. utils/
  16. .clang-format
  17. .gitattributes
  18. .gitconfig
  19. .gitignore
  20. .gn
  21. .mailmap
  22. .style.yapf
  23. .vpython
  27. codereview.settings
  29. DEPS
  31. OWNERS
  34. README.dart-sdk
  36. sdk_args.gni


A client-optimized language for fast apps on any platform

Dart is:

  • Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.

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

  • Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.

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.


Using Dart

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

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

Our API reference documentation is published at, 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

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You can also contribute patches, as described in Contributing.