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We do this by requiring that the context argument to inferExpression is non-null (since `_` is represented by `null`). Instead of passing `null` as a type context, we pass `const UnknownType()`, which represents `?`. See #32291. Change-Id: I9a0d0f3bcd74e6226004c85f63cf8be49934388a Reviewed-on: https://dart-review.googlesource.com/43761 Commit-Queue: Paul Berry <paulberry@google.com> Reviewed-by: Kevin Millikin <kmillikin@google.com> Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Front end for Dart
This package provides a low-level API for use by compiler back ends that wish to implement the Dart language. It is intended for eventual use by dev_compiler, dart2js, and the Dart VM. In addition, it will share implementation details with the analyzer package--this will be accomplished by having the analyzer package import (and re-export) parts of this package's private implementation.
End-users should use the [dartanalyzer][analyzercli] command-line tool to analyze their Dart code.
Integrators that want to write tools that analyze Dart code should use the [analyzer] package.
Note: The APIs in this package are in an early state; developers should be careful about depending on this package.