fromJson static method

NPCItemSchema? fromJson(dynamic value)

Returns a new NPCItemSchema instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static NPCItemSchema? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      assert(json.containsKey(r'code'),
          'Required key "NPCItemSchema[code]" is missing from JSON.');
      assert(json[r'code'] != null,
          'Required key "NPCItemSchema[code]" has a null value in JSON.');
      assert(json.containsKey(r'npc'),
          'Required key "NPCItemSchema[npc]" is missing from JSON.');
      assert(json[r'npc'] != null,
          'Required key "NPCItemSchema[npc]" has a null value in JSON.');
      assert(json.containsKey(r'currency'),
          'Required key "NPCItemSchema[currency]" is missing from JSON.');
      assert(json[r'currency'] != null,
          'Required key "NPCItemSchema[currency]" has a null value in JSON.');
      return true;
    }());

    return NPCItemSchema(
      code: mapValueOfType<String>(json, r'code')!,
      npc: mapValueOfType<String>(json, r'npc')!,
      currency: mapValueOfType<String>(json, r'currency')!,
      buyPrice: mapValueOfType<int>(json, r'buy_price'),
      sellPrice: mapValueOfType<int>(json, r'sell_price'),
    );
  }
  return null;
}