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1 | //import static main.DateStructures.*; |
2 | |
3 | sclass EnglishDateParser > DateStructures {
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4 | bool assumeFuture = true; // e.g. for "tuesday" [not used] |
5 | |
6 | SomeDate parse(S s) null {
|
7 | new ProbabilisticParser1 parser; |
8 | |
9 | // action that parses a number |
10 | ProbabilisticParser1.Action number = parser.new Any {
|
11 | double calcProbabilityForMatchedText(S s) {
|
12 | //print("number? " + s);
|
13 | ret isInteger(s) ? 100 : 50; |
14 | } |
15 | }; |
16 | |
17 | // action that parses a year |
18 | ProbabilisticParser1.Action year = parser.new Any {
|
19 | double calcProbabilityForMatchedText(S s) {
|
20 | ret !isInteger(s) ? 50 |
21 | : between(parseInt(s), 1900, 2100) ? 100 : 75; |
22 | } |
23 | }; |
24 | |
25 | LS tok = javaTok(s); |
26 | |
27 | // YMD rule |
28 | parser.addState(tok, parser.ruleFromActions( |
29 | year, |
30 | parser.new ConsumeToken("/"),
|
31 | number, |
32 | parser.new ConsumeToken("/"),
|
33 | number |
34 | )).userObject = func(Matches m) -> SomeDate {
|
35 | new Day(parseInt($3), new Month(parseInt($2), new Year(parseInt($1)))) |
36 | }; |
37 | |
38 | // year rule |
39 | parser.addState(tok, parser.ruleFromActions( |
40 | year |
41 | )).userObject = func(Matches m) -> SomeDate {
|
42 | new Year(parseInt($1)) |
43 | }; |
44 | |
45 | // weekday rule |
46 | parser.addState(tok, parser.ruleFromActions( |
47 | parser.new ConsumeOneOfTokens(asCISet(englishWeekdays())), |
48 | )).userObject = func(Matches m) -> SomeDate {
|
49 | new Weekday(parseEnglishWeekday($1)) |
50 | }; |
51 | |
52 | // "next <weekday>" rule |
53 | parser.addState(tok, parser.ruleFromActions( |
54 | parser.new ConsumeToken("next"),
|
55 | parser.new ConsumeOneOfTokens(asCISet(englishWeekdays())), |
56 | )).userObject = func(Matches m) -> SomeDate {
|
57 | new Weekday(parseEnglishWeekday(print("day", $1)), new CurrentWeekPlus(1))
|
58 | }; |
59 | |
60 | // "in <n> days" |
61 | parser.addState(tok, parser.ruleFromActions( |
62 | parser.new ConsumeToken("in"),
|
63 | number, |
64 | parser.new ConsumeOneOfTokens("day", "days")
|
65 | )).userObject = func(Matches m) -> SomeDate {
|
66 | new TodayPlus(parseInt($1)) |
67 | }; |
68 | |
69 | // "<n> days from now" |
70 | parser.addState(tok, parser.ruleFromActions( |
71 | number, |
72 | parser.new ConsumeOneOfTokens("day from now", "days from now"),
|
73 | )).userObject = func(Matches m) -> SomeDate {
|
74 | new TodayPlus(parseInt($1)) |
75 | }; |
76 | |
77 | // month rule |
78 | parser.addState(tok, parser.ruleFromActions( |
79 | parser.new ConsumeOneOfTokens(asCISet(englishMonthNames())), |
80 | )).userObject = func(Matches m) -> SomeDate {
|
81 | new Month(parseEnglishMonthName($1)) |
82 | }; |
83 | |
84 | // combine month + year |
85 | |
86 | parser.think(); |
87 | ProbabilisticParser1.State state = parser.bestDoneState(); |
88 | print(state); |
89 | if (state != null) {
|
90 | Matches m = parser.stateToMatches(state, action -> !action instanceof ProbabilisticParser1.ConsumeToken); |
91 | print(m); |
92 | ret (SomeDate) callF(state.userObject, m); |
93 | } |
94 | } |
95 | } |
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| Snippet ID: | #1028540 |
| Snippet name: | EnglishDateParser [attempt 1, solves a few cases] |
| Eternal ID of this version: | #1028540/36 |
| Text MD5: | 11a64170bb282f673eec149fc1fffb6d |
| Transpilation MD5: | 7ded0f442ad324e066448edba6d954ab |
| Author: | stefan |
| Category: | |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2020-06-27 21:46:39 |
| Source code size: | 2957 bytes / 95 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 167 / 386 |
| Version history: | 35 change(s) |
| Referenced in: | [show references] |