Paul Berry
bd2d261bc6
Support for `when` clauses requires flow analysis integration, so that
`when` clauses can promote variables, e.g.:
f(int x, String? y) {
switch (x) {
case 0 when y != null:
// y is known to be non-null here
}
}
Support for labels in switch statements had a small flaw: we weren't
reporting an error in the case where a label shared a case body with a
pattern that tried to bind a variable, e.g.:
f(int x) {
switch (x) {
L: // Error: does not mind the variable `y`
case var y:
...
}
}
Change-Id: I0b2bb4721a6b3a8f7898df682b24b75ddb6e44ae
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/256605
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@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 dart analyze
command-line tool to analyze their Dart code.
Integrators that want to write tools that analyze Dart code should use the analyzer package.
Note: A previous version of this package was published on pub.dev. It has now been marked DISCONTINUED as it is not intended for direct consumption, as per the notes above.