fromJson static method

UseItemSchema? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static UseItemSchema? 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'cooldown'),
          'Required key "UseItemSchema[cooldown]" is missing from JSON.');
      assert(json[r'cooldown'] != null,
          'Required key "UseItemSchema[cooldown]" has a null value in JSON.');
      assert(json.containsKey(r'item'),
          'Required key "UseItemSchema[item]" is missing from JSON.');
      assert(json[r'item'] != null,
          'Required key "UseItemSchema[item]" has a null value in JSON.');
      assert(json.containsKey(r'character'),
          'Required key "UseItemSchema[character]" is missing from JSON.');
      assert(json[r'character'] != null,
          'Required key "UseItemSchema[character]" has a null value in JSON.');
      return true;
    }());

    return UseItemSchema(
      cooldown: CooldownSchema.fromJson(json[r'cooldown'])!,
      item: ItemSchema.fromJson(json[r'item'])!,
      character: CharacterSchema.fromJson(json[r'character'])!,
    );
  }
  return null;
}