// Copyright 2022 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef COMPONENTS_DATABASE_UTILS_UPPER_BOUND_STRING_H_ #define COMPONENTS_DATABASE_UTILS_UPPER_BOUND_STRING_H_ #include namespace database_utils { // Returns a string with the following property: // Condition (str >= prefix AND str < UpperBoundString(prefix)) // is satisfied for all strs that start with prefix and only for them. // This can be used for optimization purposes to avoid using the LIKE operator. // prefix must be a UTF-8 string. std::string UpperBoundString(const std::string& prefix); } // namespace database_utils #endif // COMPONENTS_DATABASE_UTILS_UPPER_BOUND_STRING_H_