[kernel] Include urls even when we have no source

Previously, if we didn't include the source code, we wrote the url as
null. This for instance made it impossible to step through mixed in code
(at least when mixed in from the sdk).

This CL includes all used urls. If there's no source, the source is empty,
but the VM then tries to find the proper source to be able to display it
(e.g. the VM already has the sdk source).

This CL further more adds a service test that tests that we can actually
step into mixin in code from the sdk.

Change-Id: Ied9569723e23928769ebc980410aed60be6eaa22
Reviewed-on: https://dart-review.googlesource.com/51621
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
7 files changed
tree: b97474050d72a5630c4d30c1dbdb625276e633fb
  1. .github/
  2. build/
  3. client/
  4. docs/
  5. pkg/
  6. runtime/
  7. samples/
  8. samples-dev/
  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. .packages
  21. AUTHORS
  22. BUILD.gn
  23. CHANGELOG.md
  24. codereview.settings
  25. dartdoc_options.yaml
  26. DEPS
  27. LICENSE
  28. PATENTS
  29. PRESUBMIT.py
  30. README.dart-sdk
  31. README.md
  32. WATCHLISTS
README.md

Dart

Dart is an open-source, scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps.

Using Dart

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

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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.

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You can also contribute patches, as described in Contributing.

License & patents

See LICENSE and PATENTS.