Paul Berry
3f83aeb493
This will simplify some situations where nullability migration would otherwise have to visit the source code in a very careful order. For example, when analyzing top level fields undergoing type inference, we can simply create a node for the nullability of each top level field, and then later use the "union" operation to hook up those nodes to the nodes resulting from analyzing their initializers. Without the union operation, we would have to be careful to visit the top level fields in dependency order. Change-Id: I3b07e1abccc5b1c9f1c7c9fa7b13fb6af60c07d6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/105800 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Paul Berry <paulberry@google.com>
NNBD Migration Engine
This package provides infrastructure for migrating code to be non-nullable by default.