tree 73e1ca9b65ccdeddf07c45f073e4ba3261c9c1b5
parent 47e88549998b3220e56dbce6e5ccb54ee8f1f77c
author Googler <noreply@google.com> 1562001779 -0700
committer Copybara-Service <copybara-worker@google.com> 1562002079 -0700

bazel syntax: eliminate Operator; use TokenKind

Also:
- rename TokenKind.getPrettyName -> toString.
  No-one wants to see internal enum names in error messages.
- use shorter names (op, x, y) throughout {Bi,U}naryOperatorExpression.
PiperOrigin-RevId: 255981802