| grammar Iso8601; | |
| temporal : year (HYPHEN subyear)? offset? EOF | |
| ; | |
| subyear : month (HYPHEN submonth)? | |
| | W_LITERAL week (HYPHEN subweek)? | |
| | Q_LITERAL quarter (HYPHEN subquarter)? | |
| | oday (T_LITERAL subday)? | |
| ; | |
| submonth : mday (T_LITERAL subday)? | |
| ; | |
| subweek : wday (T_LITERAL subday)? | |
| ; | |
| subquarter: qday (T_LITERAL subday)? | |
| ; | |
| subday : hour (COLON subhour)? | |
| ; | |
| subhour : minute (COLON subminute)? | |
| ; | |
| subminute : second (DECIMAL subsecond)? | |
| ; | |
| subsecond : dsec | |
| | csec | |
| | msec | |
| ; | |
| offset : OFFSET ; | |
| OFFSET : Z_LITERAL | |
| | ('+' | '-') DIGIT2 ':' DIGIT2 | |
| ; | |
| HYPHEN : '-' ; | |
| COLON : ':' ; | |
| DECIMAL : '.' ; | |
| T_LITERAL : 'T' ; | |
| W_LITERAL : 'W' ; | |
| Q_LITERAL : 'Q' ; | |
| Z_LITERAL : 'Z' ; | |
| year : DIGIT4 ; | |
| month : DIGIT2 ; | |
| week : DIGIT2 ; | |
| quarter : DIGIT1 ; | |
| qday: DIGIT2 ; | |
| mday : DIGIT2 ; | |
| wday : DIGIT1 ; | |
| oday : DIGIT3 ; | |
| hour : DIGIT2 ; | |
| minute : DIGIT2 ; | |
| second : DIGIT2 ; | |
| dsec : DIGIT1 ; | |
| csec : DIGIT2 ; | |
| msec : DIGIT3 ; | |
| DIGIT4 : [0-9] DIGIT3 ; | |
| DIGIT3 : [0-9] DIGIT2 ; | |
| DIGIT2 : [0-9] DIGIT1 ; | |
| DIGIT1 : [0-9] ; |
A work-in-progress grammar for ISO-8601.
This grammar will initially be used to parse temporal /resolutions/ without loss of specified precision (e.g., the string 2016-05 will be parsed to an object represeting the entire month of May 2016, while the string 2016-05-30T18Z will represent the zulu-hour starting a8 18:00 and running to 19:00 on May 30, 2016.