Alexander Markov
6239c434fb
Elimination of redundant type cast 'x as Function' where x is a function type (such as 'void Function(int)') is not correct because it changes semantics of a function call if such expression is used as a receiver. "Function" static type of receiver allows arbitrary function calls, while known function type of the receiver means the call doesn't need to check parameter types. Static type of receiver is currently not stored in kernel AST but calculated from the receiver node, so replacing 'x as Function' with 'x' changes static type of the receiver from "Function" to function type. TEST=tests/language/regress/regress45428_test.dart Fixes https://github.com/dart-lang/sdk/issues/45428 Change-Id: If7148450526703daa63a442adf67a9e7a2dcea54 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/193524 Reviewed-by: Johnni Winther <johnniwinther@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.