fromString static method

Implementation

static FunctionParamType fromString(String name) {
  if (name.endsWith(']')) {
    final lastOpeningsBracket = name.lastIndexOf('[');
    final length = (name.length - 1) - lastOpeningsBracket > 1
        ? int.parse(name[lastOpeningsBracket + 1])
        : 0;
    final itemTypeName = name.substring(0, lastOpeningsBracket);
    final itemParamType = fromString(itemTypeName);
    return itemParamType.getArrayType(length);
  }

  if (name.startsWith('(') && name.endsWith(')')) {
    final nameWithoutParentheses = name.substring(1, name.length - 1);
    final tupleTypes = extractParams(nameWithoutParentheses)
        .map((e) => fromString(e.$1))
        .toList();
    return TupleFunctionParamType(name, tupleTypes);
  }

  return _elementaryTypes.singleWhere(
    (element) => element.name == name,
    orElse: () => throw Exception('Invalid type: $name'),
  );
}