diff options
| author | John Ericson <John.Ericson@Obsidian.Systems> | 2023-03-26 21:12:25 -0400 |
|---|---|---|
| committer | John Ericson <John.Ericson@Obsidian.Systems> | 2023-03-31 23:01:40 -0400 |
| commit | abd5e7dec039386628223f886b33047734172c8d (patch) | |
| tree | ca3aecd64e1e9375ab6ed48d4a7dc54ac83b584d /src/libstore/store-cast.hh | |
| parent | 8ae9d669409851acb6de39335b11a95a991eae6d (diff) | |
Extend internal API docs, part 2
Picking up from #8111.
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
Diffstat (limited to 'src/libstore/store-cast.hh')
| -rw-r--r-- | src/libstore/store-cast.hh | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/libstore/store-cast.hh b/src/libstore/store-cast.hh index ff62fc359..ccd19e5ad 100644 --- a/src/libstore/store-cast.hh +++ b/src/libstore/store-cast.hh @@ -4,6 +4,13 @@ namespace nix { +/** + * Helper to try downcasting a Store with a nice method if it fails. + * + * This is basically an alternative to the user-facing part of + * Store::unsupported that allows us to still have a nice message but + * better interface design. + */ template<typename T> T & require(Store & store) { |