1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_GRAMMAR_PARSER_H_
#define LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_GRAMMAR_PARSER_H_
#include <string>
#include <vector>
#include "annotator/datetime/datetime-grounder.h"
#include "annotator/datetime/parser.h"
#include "annotator/model_generated.h"
#include "annotator/types.h"
#include "utils/base/statusor.h"
#include "utils/grammar/analyzer.h"
#include "utils/i18n/locale-list.h"
#include "utils/utf8/unicodetext.h"
namespace libtextclassifier3 {
// Parses datetime expressions in the input and resolves them to actual absolute
// time.
class GrammarDatetimeParser : public DatetimeParser {
public:
explicit GrammarDatetimeParser(const grammar::Analyzer& analyzer,
const DatetimeGrounder& datetime_grounder,
const float target_classification_score,
const float priority_score,
ModeFlag enabled_modes);
// Parses the dates in 'input' and fills result. Makes sure that the results
// do not overlap.
// If 'anchor_start_end' is true the extracted results need to start at the
// beginning of 'input' and end at the end of it.
StatusOr<std::vector<DatetimeParseResultSpan>> Parse(
const std::string& input, int64 reference_time_ms_utc,
const std::string& reference_timezone, const LocaleList& locale_list,
ModeFlag mode, AnnotationUsecase annotation_usecase,
bool anchor_start_end) const override;
// Same as above but takes UnicodeText.
StatusOr<std::vector<DatetimeParseResultSpan>> Parse(
const UnicodeText& input, int64 reference_time_ms_utc,
const std::string& reference_timezone, const LocaleList& locale_list,
ModeFlag mode, AnnotationUsecase annotation_usecase,
bool anchor_start_end) const override;
private:
const grammar::Analyzer& analyzer_;
const DatetimeGrounder& datetime_grounder_;
const float target_classification_score_;
const float priority_score_;
const ModeFlag enabled_modes_;
};
} // namespace libtextclassifier3
#endif // LIBTEXTCLASSIFIER_ANNOTATOR_DATETIME_GRAMMAR_PARSER_H_
|
