Johnni Winther
baf4639de7
This adds mixins for visitors that implement handling of internal nodes. These nodes are replaced during constant evaluation and should there not be handle by backends. TEST=existing Change-Id: Iec76af357c11fd54e97a4db82c7aa52e31ba9dd3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/456680 Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Chloe Stefantsova <cstefantsova@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com> Reviewed-by: Ömer Ağacan <omersa@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com>