Function foreach

src/common/resource_quantities.cpp:44–70

  ResourceQuantities result;

  foreach (const string& token, strings::tokenize(text, ";")) {
    vector<string> pair = strings::tokenize(token, ":");
    if (pair.size() != 2) {
      return Error("Failed to parse '" + token + "': missing or extra ':'");
    }

    Try<Value> value = internal::values::parse(pair[1]);
    if (value.isError()) {
      return Error(
          "Failed to parse '" + pair[1] + "' to quantity: " + value.error());
    }

    if (value->type() != Value::SCALAR) {
      return Error(
          "Failed to parse '" + pair[1] + "' to quantity:"
          " only scalar values are allowed");
    }

    if (value->scalar().value() < 0) {
      return Error(
          "Failed to parse '" + pair[1] + "' to quantity:"
          " negative values are not allowed");
    } else if (value->scalar().value() > 0) {
      result.add(strings::trim(pair[0]), value->scalar());
    }
    // Zero value is silently dropped.
  }

  return result;
}