Alexander Markov
8c1fa6d05b
ExtensionTypeMemberDescriptor.memberReference and ExtensionMemberDescriptor.memberReference are now nullable. TFA-based tree shaker can now set them to null when extension type member is not used and removed but corresponding lowered tear-off is still used and retained. Front-end never sets them to null and requires non-null memberReferences when consuming kernel. TEST=pkg/vm/testcases/transformations/type_flow/transformer/regress_flutter155624.dart Fixes https://github.com/flutter/flutter/issues/155624 Change-Id: I71f98c02f4659ff72a8c1d7fc6c578e8b8e26d82 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/401382 Reviewed-by: Johnni Winther <johnniwinther@google.com> Reviewed-by: Slava Egorov <vegorov@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com> Reviewed-by: Ömer Ağacan <omersa@google.com> Commit-Queue: Alexander Markov <alexmarkov@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.