tree 8cf931ae11b82265232cfc014ea5c3a0818fb497
parent 2224370614b224e4bbfca3af8ccd0ddb7f343fb2
author adonovan <adonovan@google.com> 1585776529 -0700
committer Copybara-Service <copybara-worker@google.com> 1585776618 -0700

bazel syntax: break dependency on lib.events.Event

This change removes nearly all dependencies on lib.event.Event,
in preparation for reversing the lib.syntax->lib.event dependency.

SyntaxError is renamed to SyntaxError.Exception, and SyntaxError
itself is a simple event-like location+message type.

PiperOrigin-RevId: 304262913