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_ANNOTATOR_DATETIME_DATETIME_GROUNDER_H_ 18 #define LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_DATETIME_GROUNDER_H_ 19 20 #include <vector> 21 22 #include "annotator/datetime/datetime_generated.h" 23 #include "annotator/types.h" 24 #include "utils/base/statusor.h" 25 #include "utils/calendar/calendar.h" 26 27 namespace libtextclassifier3 { 28 29 // Utility class to resolve and complete an ungrounded datetime specification. 30 class DatetimeGrounder { 31 public: 32 explicit DatetimeGrounder(const CalendarLib* calendarlib); 33 34 // Resolves ambiguities and produces concrete datetime results from an 35 // ungrounded datetime specification. 36 StatusOr<std::vector<DatetimeParseResult>> Ground( 37 const int64 reference_time_ms_utc, const std::string& reference_timezone, 38 const std::string& reference_locale, 39 const grammar::datetime::UngroundedDatetime* ungrounded_datetime) const; 40 41 bool IsValidUngroundedDatetime( 42 const grammar::datetime::UngroundedDatetime* ungrounded_datetime) const; 43 44 private: 45 const CalendarLib& calendarlib_; 46 }; 47 48 } // namespace libtextclassifier3 49 50 #endif // LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_DATETIME_GROUNDER_H_ 51