Dmitry Stefantsov
2875b1bcce
Programmers can use nullability modifiers on type parameters when using them as types. However, the actual nullability of such types is calculated from that and also from the bound of the type parameter, and from the promoted bound if it has it. Previously, the final result of the nullability calculation was stored on the type. This CL also stores the nullability declared by the programmer. Change-Id: Iabbddc1e8a477678975190fa00bf702c914f7777 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/111424 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: 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.