valueEnsureAsList<T> static method

List<T> valueEnsureAsList<T>(Object? value)

Implementation

static List<T> valueEnsureAsList<T>(Object? value) {
  if (value is List<T>) return value;
  try {
    final valueList = value as List;
    try {
      if (!isDynamic<T>()) {
        if (isMap<T>()) {
          return valueList
              .map((e) {
                if (e is T) return e;
                return Map.from(e);
              })
              .toList()
              .cast<T>();
        }
        if (isMapStringDynamic<T>()) {
          return valueList
              .map((e) {
                if (e is T) return e;
                return Map<String, dynamic>.from(e);
              })
              .toList()
              .cast<T>();
        }
        if (_isMapStringString<T>()) {
          return valueList
              .map((e) {
                if (e is T) return e;
                return Map<String, String>.from(e);
              })
              .toList()
              .cast<T>();
        }
        if (_isListOfListInt()) {
          return value
              .map((e) => valueEnsureAsList<List<int>>(e))
              .toList()
              .cast<T>();
        }
        return value.map((e) => valueAs<T>(e)).toList();
      }
    } catch (_) {}
    return List<T>.from(value);
  } catch (e) {
    throw JsonParserError(
      "Failed to parse object as list<$T>",
      details: {"error": e.toString()},
    );
  }
}