Dmitry Stefantsov
1b2c267bb2
Previously to unwrap a type in isTop method the declared nullability was set to Nullability.nonNullable. This doesn't work for intersection type because .withDeclaredNullability() doesn't work for them. This CL introduces a method that simulates the removal of the top-level nullability type constructor from a type term, and uses the method in isTop to account for intersection types and other possible similar cases in future. Change-Id: I3e6f30b5d93850b2cf92475a89d09d6d9255089f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/156193 Reviewed-by: Johnni Winther <johnniwinther@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.