carocad / geojson.specs Goto Github PK

after much try and error I found out that it is not possible to have such function due to the way that Clojure spec works. Unfortunately clojure doesnt report any error and just silently creates a spec that seems to work but that doesnt really

However, there is an option to create it ... macros !!
it should be possible to create a macro that will resolve the geometry required
as a keyword and build an s/keys with it.
There is another problem however. We need to register all posible geometries beforehand and decide on macro execution which one to take based on the user input probably something like this:

(defmacro foo [keyspec]
  (let [names {::geojson/linestring :line/geometry
               ::geojson/point :point/geometry}]
    (s/keys :req-un [:hiposfer.geojson.specs.feature/type
                     (names keyspec)])))

however since I am not using the feature at the moment I havent tried it. If you want this feature and came to this point, please submit a PR so that we can all benefit from it :)

The rfc provides some examples that could be used to test these specs

https://tools.ietf.org/html/rfc7946#appendix-A

I think that a generative approach would not fit here since it would be like doing of "judge and jury at the same time"

See section 7.1

https://tools.ietf.org/html/rfc7946

See #4 for an overview of the approach and the problems with it