[PATCH] D94844: [VFS] Add support to RedirectingFileSystem for mapping a virtual directory to one in the external FS.

[Nathan Hawes via Phabricator via cfe-commits]

nathawes marked 6 inline comments as done.
nathawes added a comment.

@JDevlieghere and @dexonsmith would you mind taking another look?

I ended up changing the 'lookup' functions to drop the ExternalRedirect out param and supply that via a new 'LookupResult' return value that also gives the matched Entry. Hopefully that avoids any confusion over where it's computed vs used. It also served as a good home for the duplicated code and the logic in the old SetExternalRedirect closure, as Jonas had mentioned. While adding the extra directory iteration tests Duncan suggested I noticed I wasn't respecting the 'use-external-names' setting in the return items, so I've also added a new directory iterator implementation (RedirectingFSDirRemapIterImpl). That one's used to wrap the iterator the external file system gives for the directory being mapped to, and updates the paths in the items it returns to refer to the virtual directory's path instead, before passing them along.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D94844/new/

https://reviews.llvm.org/D94844