fromJson static method

BankSchema? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static BankSchema? 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'slots'),
          'Required key "BankSchema[slots]" is missing from JSON.');
      assert(json[r'slots'] != null,
          'Required key "BankSchema[slots]" has a null value in JSON.');
      assert(json.containsKey(r'expansions'),
          'Required key "BankSchema[expansions]" is missing from JSON.');
      assert(json[r'expansions'] != null,
          'Required key "BankSchema[expansions]" has a null value in JSON.');
      assert(json.containsKey(r'next_expansion_cost'),
          'Required key "BankSchema[next_expansion_cost]" is missing from JSON.');
      assert(json[r'next_expansion_cost'] != null,
          'Required key "BankSchema[next_expansion_cost]" has a null value in JSON.');
      assert(json.containsKey(r'gold'),
          'Required key "BankSchema[gold]" is missing from JSON.');
      assert(json[r'gold'] != null,
          'Required key "BankSchema[gold]" has a null value in JSON.');
      return true;
    }());

    return BankSchema(
      slots: mapValueOfType<int>(json, r'slots')!,
      expansions: mapValueOfType<int>(json, r'expansions')!,
      nextExpansionCost: mapValueOfType<int>(json, r'next_expansion_cost')!,
      gold: mapValueOfType<int>(json, r'gold')!,
    );
  }
  return null;
}