Johnni Winther
dd1c3a3233
The CFE can invoke transformations despite having compile-time errors. The async transform was crashing the compiler if it hits for-in iterables that have an invalid type or never type. In case of an invalid type, the program has a compile-time error and won't be able to run propertly. So we'll replace the entire for-in with an invalid expression statement if the iterable is an invalid expression. In case of a never type, the program should compile fine, which this CL also fixes. This makes the newly added tests no longer result in DartkCrash but rather in a compile-time error (invalid expression) or runtime-error (never type). Closes https://github.com/dart-lang/sdk/issues/45014 Change-Id: Ic50f68400b67b57dd4a2c0a125b08f0f3e0d8dd6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/188463 Commit-Queue: Johnni Winther <johnniwinther@google.com> 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.