Summary:
Fixes T181. I actually have no idea what the original issue in T181 was, but this fixes several problems:
- The code for figuring out whitespace-only changes was extremely confusing and probably buggy (the code for figuring out unchanged files was equally confusing but probably less buggy).
- When rendering a whitespace shield, we did not offer a "Show Changes" link. Instead, show the "Show Changes" link: we can always render the content beneath this link.
- When clicking "Show Changes", we used the current whitespace mode, which might result in a diff with no changes. Instead, force "show all" whitespace mode.
- We never offered a "show changes" link for unchanged files. Instead, offer this link if we can service it.
- When clicking "Show Changes", we pierced the shield but didn't force file content, which would fold the entire file even if it was available. Instead, force the file content.
Test Plan: Generated whitespace-only and no-change diffs. Clicked shield links, or verified no shield link available in no-change-with-no-content. Generated an "@generated" change, verified shield worked correctly.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T181, T2009
Differential Revision: https://secure.phabricator.com/D4407
Summary:
Simplify whitespace-ignoring diffing:
- Currently, we generate two diffs (one ignoring whitespace, one normal) and then copy the //text content// from the normal one to the whitespace-ignoring one.
- Instead, copy the //change types// from the ignoring one to the normal one.
- This is cheaper and much simpler.
- It means that we have the right change types in reparseHunksForSpecialAttributes(), and can simplify some other things.
Simplify whitespace changes, unchanged files, and deleted file detections:
- Currently, we do this inline with a bunch of other stuff, in the reparse step.
- Instead, do it separately. This is simpler.
Simplify intraline whitespace handling:
- Currently, this is a complicated mess that makes roughly zero sense.
- Instead, do it in reparse in a straightforward way.
Partially fix handling of files changed only by changing whitespace.
Partially fix handling of unchanged files.
Test Plan:
- Ran unit tests.
- Created context-less diffs, verified they rendered reasonably.
- Generated a diff with prefix whitespace, suffix whitespace, intraline whitespace, and non-whitespace changes. Verified changes rendered correctly in "ignore most" and "show all" modes.
- Verified unchanged files and files with only whitspace changes render with the correct masks.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2009
Differential Revision: https://secure.phabricator.com/D4398
Summary:
- Remove 'missingNew', etc. It's impossible for a diff to popluate these, as far as I can tell (I can't generate such a diff, or find any which generate it).
- Add unit tests.
Test Plan: Unit tests, viewed a diff with some missing context.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2009
Differential Revision: https://secure.phabricator.com/D4393
Summary: D4351 swapped this from a map to a list, and then stopped it from getting to the ChangesetParser so it didn't make it to the Renderer.
Test Plan: Ran "arc diff", copy/pasted it into the web UI. Saw a diff with "context not available" blocks in between missing contexts.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2009
Differential Revision: https://secure.phabricator.com/D4384
Summary: I forgot to "set it" from the changeset parser.
Test Plan: made a diff with silly whitespace changes. toggled the various whitespace modes and got appropriate results
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T2009
Differential Revision: https://secure.phabricator.com/D4378
Summary: introducing a new friend called DifferentialHunkParser. Sort of like the DifferentialChangesetParser but works with hunks only. tried to grab hunk parsing type things from across the code base and move them into this new class.
Test Plan: unit tests and played around in Differential a bit.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T2009
Differential Revision: https://secure.phabricator.com/D4351
