In the VM-specific async transformation, an index is used to generate fresh temporary names for values that are live across an await. Before it was always 0 when translating a statement because there are no live values on entry or exit to a statement. When translating statements nested inside block expressions there can be live values, so the index should not be reset. Closes https://github.com/dart-lang/sdk/issues/36466 Change-Id: I6103d75c25f312ab1538a7c0f8fee0fea9f01b27 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98664 Commit-Queue: Kevin Millikin <kmillikin@google.com> Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Dart Kernel
Dart Kernel is a small high-level language derived from Dart. It is designed for use as an intermediate format for whole-program analysis and transformations, and to be consumed by codegen and execution backends.
The kernel language has an in-memory representation in Dart and can be serialized as binary or text.
Both the kernel language and its implementations are unstable and are under development.
This package contains the Dart part of the implementation and contains:
- A transformable IR for the kernel language
- Serialization of kernel code
Note: The APIs in this package are in an early state; developers should be careful about depending on this package. In particular, there is no semver contract for release versions of this package. Please depend directly on individual versions.
See ast.dart for the in-memory IR, or binary.md for a description of the binary format. For now, the textual format is very ad-hoc and cannot be parsed back in.