fromJson static method

ResourceSchema? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static ResourceSchema? 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'name'),
          'Required key "ResourceSchema[name]" is missing from JSON.');
      assert(json[r'name'] != null,
          'Required key "ResourceSchema[name]" has a null value in JSON.');
      assert(json.containsKey(r'code'),
          'Required key "ResourceSchema[code]" is missing from JSON.');
      assert(json[r'code'] != null,
          'Required key "ResourceSchema[code]" has a null value in JSON.');
      assert(json.containsKey(r'skill'),
          'Required key "ResourceSchema[skill]" is missing from JSON.');
      assert(json[r'skill'] != null,
          'Required key "ResourceSchema[skill]" has a null value in JSON.');
      assert(json.containsKey(r'level'),
          'Required key "ResourceSchema[level]" is missing from JSON.');
      assert(json[r'level'] != null,
          'Required key "ResourceSchema[level]" has a null value in JSON.');
      assert(json.containsKey(r'drops'),
          'Required key "ResourceSchema[drops]" is missing from JSON.');
      assert(json[r'drops'] != null,
          'Required key "ResourceSchema[drops]" has a null value in JSON.');
      return true;
    }());

    return ResourceSchema(
      name: mapValueOfType<String>(json, r'name')!,
      code: mapValueOfType<String>(json, r'code')!,
      skill: GatheringSkill.fromJson(json[r'skill'])!,
      level: mapValueOfType<int>(json, r'level')!,
      drops: DropRateSchema.listFromJson(json[r'drops']),
    );
  }
  return null;
}