Implement cider-nrepl info

[PEZ]

Calva relies heavily on the info op. It's how it looks up docs and implements peek at definition and jump to definition, and generally provides info about symbols.

Here's the cider-nrepl implementation: https://github.com/clojure-emacs/cider-nrepl/blob/master/src/cider/nrepl/middleware/info.clj

Not sure where to find documentation on this op...

[borkdude]

Can you post some example of input + output? I have no idea what to implement without any docs.

[PEZ]

Yeah, I've reverse engineered this myself when implementing this. 😄

This is what Calva sends when I ask for info on re-matches:

{
    "op": "info",
    "ns": "ring-server.core",
    "symbol": "re-matches",
    "id": "1290",
    "session": "03a1fd4b-3ebc-42d7-a073-3bb5df0e858c"
}

This is what I get back:

{
    "added": "1.0",
    "arglists-str": "[re s]",
    "column": 1,
    "doc": "Returns the match, if any, of string to pattern, using\n  java.util.regex.Matcher.matches().  Uses re-groups to return the\n  groups.",
    "file": "jar:file:/Users/pez/.m2/repository/org/clojure/clojure/1.10.0/clojure-1.10.0.jar!/clojure/core.clj",
    "id": "1286",
    "line": 4886,
    "name": "re-matches",
    "ns": "clojure.core",
    "resource": "clojure/core.clj",
    "see-also": [
        "clojure.core/re-find",
        "clojure.core/subs",
        "clojure.core/re-groups",
        "clojure.core/re-pattern"
    ],
    "session": "03a1fd4b-3ebc-42d7-a073-3bb5df0e858c",
    "static": "true",
    "status": [
        "done"
    ]
}

Please let me know if I can provide some more/better info on this.

[PEZ]

Here's another example.

Evaluating this form:

(defprotocol P
  (foo [x])
  (bar-me [x] [x y]))

And then asking Calva to get me info about bar-me, this is what is sent and received back:

{
    "op": "info",
    "ns": "ring-server.core",
    "symbol": "bar-me",
    "id": "1296",
    "session": "03a1fd4b-3ebc-42d7-a073-3bb5df0e858c"
}

{
    "arglists-str": "[x]\n[x y]",
    "file": "file:/Users/pez/Projects/tests/ring-server/src/ring_server/core.clj",
    "id": "1297",
    "line": 13,
    "name": "bar-me",
    "ns": "ring-server.core",
    "protocol": "#'ring-server.core/P",
    "session": "03a1fd4b-3ebc-42d7-a073-3bb5df0e858c",
    "status": [
        "done"
    ]
}