diff options
| author | sterni <sternenseemann@systemli.org> | 2021-09-14T10·56+0200 |
|---|---|---|
| committer | sterni <sternenseemann@systemli.org> | 2021-09-14T14·02+0000 |
| commit | 3a8e8120de2f0ac6188003b81efafa64d5bb6959 (patch) | |
| tree | d2235d21f400ec235da06e3349529e6f4e882b69 /nix/tag | |
| parent | 1883159f921d6c25ae894c231cd8bee6b4370720 (diff) | |
feat(nix/tag): add functions for querying a tag's name and value r/2856
Both are just trivial wrappers around assertIsTag to make these lookups more ergonomic. This also allows us to demote assertIsTag to an implemtation detail. Change-Id: Ib6ba2a858f4839354a57b660042b418976c4b1d9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/3541 Tested-by: BuildkiteCI Reviewed-by: Profpatsch <mail@profpatsch.de>
Diffstat (limited to 'nix/tag')
| -rw-r--r-- | nix/tag/default.nix | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/nix/tag/default.nix b/nix/tag/default.nix index 4fe589825848..23f369c2b2d1 100644 --- a/nix/tag/default.nix +++ b/nix/tag/default.nix @@ -24,6 +24,18 @@ let val = null; }; + # Returns the tag name of a given tag attribute set. + # Throws if the tag is invalid. + # + # Type: tag -> string + tagName = tag: (assertIsTag tag).name; + + # Returns the tagged value of a given tag attribute set. + # Throws if the tag is invalid. + # + # Type: tag -> any + tagValue = tag: (assertIsTag tag).val; + # like `verifyTag`, but throws the error message if it is not a tag. assertIsTag = tag: let res = verifyTag tag; in @@ -139,7 +151,8 @@ let in { inherit verifyTag - assertIsTag + tagName + tagValue discr discrDef match |