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 #include "utils/grammar/rules-utils.h"
18
19 namespace libtextclassifier3::grammar {
20
ParseRulesLocales(const RulesSet * rules)21 std::vector<std::vector<Locale>> ParseRulesLocales(const RulesSet* rules) {
22 if (rules == nullptr || rules->rules() == nullptr) {
23 return {};
24 }
25 std::vector<std::vector<Locale>> locales(rules->rules()->size());
26 for (int i = 0; i < rules->rules()->size(); i++) {
27 const grammar::RulesSet_::Rules* rules_shard = rules->rules()->Get(i);
28 if (rules_shard->locale() == nullptr) {
29 continue;
30 }
31 for (const LanguageTag* tag : *rules_shard->locale()) {
32 locales[i].push_back(Locale::FromLanguageTag(tag));
33 }
34 }
35 return locales;
36 }
37
SelectLocaleMatchingShards(const RulesSet * rules,const std::vector<std::vector<Locale>> & shard_locales,const std::vector<Locale> & locales)38 std::vector<const grammar::RulesSet_::Rules*> SelectLocaleMatchingShards(
39 const RulesSet* rules,
40 const std::vector<std::vector<Locale>>& shard_locales,
41 const std::vector<Locale>& locales) {
42 std::vector<const grammar::RulesSet_::Rules*> shards;
43 if (rules->rules() == nullptr) {
44 return shards;
45 }
46 for (int i = 0; i < shard_locales.size(); i++) {
47 if (shard_locales[i].empty() ||
48 Locale::IsAnyLocaleSupported(locales,
49 /*supported_locales=*/shard_locales[i],
50 /*default_value=*/false)) {
51 shards.push_back(rules->rules()->Get(i));
52 }
53 }
54 return shards;
55 }
56
57 } // namespace libtextclassifier3::grammar
58