tree 6f078eebe81f83e77188f350bc2f1f8996bac173
parent 28980fe4f22a354bb0c809a13b23371789b63b6e
author Jacek Centkowski <geminica.programs@gmail.com> 1669188456 +0100
committer Jacek Centkowski <geminica.programs@gmail.com> 1670055866 +0100

Cache refs/... resolutions

When `Repository.resolve` is called it recognizes if the string is a ref
reference and returns its ObjectId. Cache all requests to `refs/...` so
that reading from repository is avoided. Note that ref tip's parent
references are not cached.
Note that `PrologCompiler.call` calls `Repository.resolve` on
`refs/meta/config` and that should be improved.

Add integration test that compares the `resolve` method output with the
JGit's one for the following patterns:
* HEAD
* SHA-1: a complete or abbreviated SHA-1
* refs/...: a complete reference name
* refs/.../^: first parent of the complete reference name's tip commit
* short-name: a short reference name under refs/heads, refs/tags, or
  refs/remotes namespace
* tag-NN-gABBREV: output from describe, parsed by treating ABBREV as an
  abbreviated > SHA-1.
* id^: first parent of commit id, this is the same as id^1
* id^{commit}: ensure id is a commit

Bug: Issue 15556
Change-Id: I9a722d55b105a27ceda7e0ecbec1ce886ff896f5