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69 lines
2.6 KiB
69 lines
2.6 KiB
4 months ago
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_GRAMMAR_PARSER_H_
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#define LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_GRAMMAR_PARSER_H_
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#include <string>
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#include <vector>
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#include "annotator/datetime/datetime-grounder.h"
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#include "annotator/datetime/parser.h"
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#include "annotator/types.h"
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#include "utils/base/statusor.h"
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#include "utils/grammar/analyzer.h"
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#include "utils/i18n/locale-list.h"
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#include "utils/utf8/unicodetext.h"
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namespace libtextclassifier3 {
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// Parses datetime expressions in the input and resolves them to actual absolute
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// time.
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class GrammarDatetimeParser : public DatetimeParser {
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public:
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explicit GrammarDatetimeParser(const grammar::Analyzer& analyzer,
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const DatetimeGrounder& datetime_grounder,
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const float target_classification_score,
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const float priority_score);
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// Parses the dates in 'input' and fills result. Makes sure that the results
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// do not overlap.
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// If 'anchor_start_end' is true the extracted results need to start at the
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// beginning of 'input' and end at the end of it.
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StatusOr<std::vector<DatetimeParseResultSpan>> Parse(
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const std::string& input, int64 reference_time_ms_utc,
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const std::string& reference_timezone, const LocaleList& locale_list,
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ModeFlag mode, AnnotationUsecase annotation_usecase,
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bool anchor_start_end) const override;
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// Same as above but takes UnicodeText.
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StatusOr<std::vector<DatetimeParseResultSpan>> Parse(
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const UnicodeText& input, int64 reference_time_ms_utc,
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const std::string& reference_timezone, const LocaleList& locale_list,
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ModeFlag mode, AnnotationUsecase annotation_usecase,
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bool anchor_start_end) const override;
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private:
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const grammar::Analyzer& analyzer_;
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const DatetimeGrounder& datetime_grounder_;
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const float target_classification_score_;
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const float priority_score_;
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};
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} // namespace libtextclassifier3
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#endif // LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_GRAMMAR_PARSER_H_
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