1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBTEXTCLASSIFIER_UTILS_GRAMMAR_UTILS_LOCALE_SHARD_MAP_H_ 18 #define LIBTEXTCLASSIFIER_UTILS_GRAMMAR_UTILS_LOCALE_SHARD_MAP_H_ 19 20 #include <string> 21 #include <unordered_map> 22 #include <vector> 23 24 #include "utils/grammar/types.h" 25 #include "utils/i18n/locale-list.h" 26 #include "utils/i18n/locale.h" 27 #include "utils/optional.h" 28 29 namespace libtextclassifier3::grammar { 30 31 // Grammar rules are associated with Locale which serve as a filter during rule 32 // application. The class holds shard’s information for Locale which is used 33 // when the Aqua rules are compiled into internal rules.proto flatbuffer. 34 class LocaleShardMap { 35 public: 36 static LocaleShardMap CreateLocaleShardMap( 37 const std::vector<std::string>& locale_tags, 38 const bool include_any_match_language_tag_shard = false); 39 40 std::vector<Locale> GetLocales(const int shard) const; 41 42 int GetShard(const std::vector<Locale> locales) const; 43 int GetShard(const std::string& locale_tags) const; 44 45 int GetNumberOfShards() const; 46 47 private: LocaleShardMap()48 explicit LocaleShardMap() {} 49 void AddLocalTags(const std::string& locale_tag); 50 51 std::unordered_map<int, std::vector<Locale>> shard_to_locale_data_; 52 }; 53 54 } // namespace libtextclassifier3::grammar 55 56 #endif // LIBTEXTCLASSIFIER_UTILS_GRAMMAR_UTILS_LOCALE_SHARD_MAP_H_ 57