Revision: Add helper method for comparison to Revision.NULL

When Error Prone checks are enabled, comparing to Revision.NULL
with the == or != operator results in a warning:

  [ReferenceEquality] Comparison using reference equality instead of value equality

The NULL instance is used as a sentinel, so comparing with reference
equality is correct.

Rather than suppressing the warning at every place in the code, add
a helper method that can be used, and suppress the warning only there.

Note that the "ReferenceEquality" warning is Error Prone specific and
suppressing it results in an "Unsupported @SuppressWarnings" warning.

Change-Id: Ia50404f76f88c405b9298a645760c019384c92ff
7 files changed
tree: 92c6fccc1aa30e614c3c9bfcefb1e594ebf3a6b2
  1. .settings/
  2. Documentation/
  3. java/
  4. javatests/
  5. lib/
  6. resources/
  7. tools/
  8. .bazelrc
  9. .gitignore
  10. .mailmap
  11. BUILD
  13. fake_pom_deploy.xml
  16. version.bzl

Gitiles - A simple JGit repository browser

Gitiles is a simple repository browser for Git repositories, built on JGit. Its guiding principle is simplicity: it has no formal access controls, no write access, no fancy Javascript, etc.

Gitiles automatically renders *.md Markdown files into HTML for simplified documentation. Refer to the Markdown documentation for details.


Gitiles is configurable in a git-style configuration file named gitiles.config. Refer to the configuration documentation for details.


Use the issue tracker at github to file bugs.

Contributing to Gitiles

Please refer to the Developer Guide.