75 lines
3.0 KiB
C++
75 lines
3.0 KiB
C++
/*
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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_GRAMMAR_DATES_CFG_DATETIME_ANNOTATOR_H_
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#define LIBTEXTCLASSIFIER_ANNOTATOR_GRAMMAR_DATES_CFG_DATETIME_ANNOTATOR_H_
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#include "annotator/grammar/dates/annotations/annotation.h"
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#include "annotator/grammar/dates/dates_generated.h"
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#include "annotator/grammar/dates/parser.h"
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#include "annotator/grammar/dates/utils/annotation-keys.h"
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#include "annotator/model_generated.h"
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#include "utils/calendar/calendar.h"
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#include "utils/i18n/locale.h"
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#include "utils/tokenizer.h"
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#include "utils/utf8/unilib.h"
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namespace libtextclassifier3::dates {
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// Helper class to convert the parsed datetime expression from AnnotationList
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// (List of annotation generated from Grammar rules) to DatetimeParseResultSpan.
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class CfgDatetimeAnnotator {
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public:
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explicit CfgDatetimeAnnotator(
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const UniLib* unilib, const GrammarTokenizerOptions* tokenizer_options,
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const CalendarLib* calendar_lib, const DatetimeRules* datetime_rules,
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const float annotator_target_classification_score,
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const float annotator_priority_score);
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// CfgDatetimeAnnotator is neither copyable nor movable.
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CfgDatetimeAnnotator(const CfgDatetimeAnnotator&) = delete;
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CfgDatetimeAnnotator& operator=(const CfgDatetimeAnnotator&) = delete;
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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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// Method will return false if input does not contain any datetime span.
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void Parse(const std::string& input,
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const DateAnnotationOptions& annotation_options,
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const std::vector<Locale>& locales,
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std::vector<DatetimeParseResultSpan>* results) const;
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// UnicodeText version of parse.
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void Parse(const UnicodeText& input,
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const DateAnnotationOptions& annotation_options,
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const std::vector<Locale>& locales,
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std::vector<DatetimeParseResultSpan>* results) const;
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private:
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void ProcessDatetimeParseResult(
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const DateAnnotationOptions& annotation_options,
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const DatetimeParseResult& datetime_parse_result,
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std::vector<DatetimeParseResult>* results) const;
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const CalendarLib& calendar_lib_;
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const Tokenizer tokenizer_;
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DateParser parser_;
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const float annotator_target_classification_score_;
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const float annotator_priority_score_;
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};
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} // namespace libtextclassifier3::dates
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#endif // LIBTEXTCLASSIFIER_ANNOTATOR_GRAMMAR_DATES_CFG_DATETIME_ANNOTATOR_H_
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