Is it possible to get a sigil from a string?

Questions / Help
1

For example, if I have a json payload:

{
  "inputs":{
    "key": "~jp(event/key1/1/key2)",
    "key2": "str"
  }
}

The goal is to transform the the string to a custom json-pointer sigil ~jp(json-pointer-string)

My naive approach would be a regex match but wondering if there is an Elixir magic way or if I’m missing something obvious :stuck_out_tongue:

2

Does Code.eval_string/3 not do the job?

3

No, sigils are compile time structures. If you have runtime data you can’t treat that data as code without evaling it. Evaling is generally not advised for security reasons.

3 Likes
4

For my purposes the input is trusted but I agree its better to be cautious. Ok leaning towards regex matching then.

Would eval_string/3 be faster than a regex though? My guess is no