Tess Strickland
7558e63725
The debugger assumes a null suspend state variable in an asynchronous function means that the function is still in the prologue prior to setting up the suspend state. However, the interpreter clears the suspend state variable before returning, and the debugger needs to be able to pause before returning when single stepping, so earlier a hack was added to the debugger that detects being at the direct call of the async return method and/or the return instruction with a null suspend state variable. However, there's a much simpler way of ensuring the debugger pauses before returning: just emit the source position for the return prior to clearing the suspend state variable. This also ensures that the debugger still has access to the function's suspend state when pausing before the return, instead of waiting until it has been cleared and thus is no longer accessible. TEST=ci (should not change the result of any current tests) Cq-Include-Trybots: luci.dart.try:vm-dyn-linux-debug-x64-try Change-Id: I401cceb169d8692ac379cdc5a531e07cafbe9a65 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/500740 Commit-Queue: Tess Strickland <sstrickl@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>
Dart
An approachable, portable, and productive language for high-quality apps on any platform
Dart is:
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Approachable: Develop with a strongly typed programming language that is consistent, concise, and offers modern language features like null safety and patterns.
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Portable: Compile to ARM, x64, or RISC-V machine code for mobile, desktop, and backend. Compile to JavaScript or WebAssembly for the web.
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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:
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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.
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Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).
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.