module util;

import std.format;
import std.json;

JSONValue requiredKey(string key)(JSONValue val) {
  const(JSONValue)* j = key in val;

  if (j)
    return *j;

  throw new Exception(format("Key %s not found in json", key));
}

T checkKey(T)(JSONValue val, string key) {
  if (JSONValue* j = key in val)
    return (*j).get!T;

  return T.init;
}