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cakebakercakebaker
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Merge pull request #191 from yuankunzhang/update-comments
docs: update comments
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‎src/items/mod.rs‎

Lines changed: 73 additions & 43 deletions
Original file line numberDiff line numberDiff line change
@@ -92,63 +92,93 @@ pub(crate) fn at_local(
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/// Grammar:
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///
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/// ```ebnf
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/// spec = timestamp | items ;
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/// spec = timestamp | items ;
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///
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/// timestamp = "@" , dec_int ;
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/// timestamp = "@" , float ;
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///
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/// items = item , { item } ;
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/// item = datetime | date | time | relative | weekday | timezone | year ;
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/// items = item , { item } ;
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/// item = datetime | date | time | relative | weekday | timezone | year ;
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///
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/// datetime = date , [ "T" | "t" | whitespace ] , iso_time ;
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/// date = iso_date | us_date | literal1_date | literal2_date ;
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/// datetime = date , [ "t" | whitespace ] , iso_time ;
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///
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/// iso_date = year , [ iso_date_delim ] , month , [ iso_date_delim ] , day ;
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/// iso_date_delim = [ { whitespace } ] , "-" , [ { whitespace } ] ;
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/// date = iso_date | us_date | literal1_date | literal2_date ;
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///
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/// us_date = month , [ us_date_delim ] , day , [ [ us_date_delim ] , year ];
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/// us_date_delim = [ { whitespace } ] , "/" , [ { whitespace } ] ;
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/// iso_date = year , [ iso_date_delim ] , month , [ iso_date_delim ] , day ;
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/// iso_date_delim = optional_whitespace , "-" , optional_whitespace ;
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///
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/// literal1_date = day , [ literal1_date_delim ] , literal_month , [ [ literal1_date_delim ] , year ] ;
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/// literal1_date_delim = { whitespace } | [ { whitespace } ] , "-" , [ { whitespace } ] ;
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/// us_date = month , [ us_date_delim ] , day , [ us_date_delim , year ];
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/// us_date_delim = optional_whitespace , "/" , optional_whitespace ;
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///
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/// literal2_date = literal_month , [ { whitespace } ] , day , [ [ literal2_date_delim ] , year ] ;
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/// literal2_date_delim = { whitespace } | [ { whitespace } ] , "," , [ { whitespace } ] ;
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/// literal1_date = day , [ literal1_date_delim ] , literal_month , [ literal1_date_delim , year ] ;
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/// literal1_date_delim = (optional_whitespace , "-" , optional_whitespace) | optional_whitespace ;
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///
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/// year = dec_uint ;
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/// month = dec_uint ;
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/// day = dec_uint ;
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/// literal2_date = literal_month , optional_whitespace , day , [ literal2_date_delim , year ] ;
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/// literal2_date_delim = (optional_whitespace , "," , optional_whitespace) | optional_whitespace ;
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///
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/// literal_month = "january" | "jan"
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/// | "february" | "feb"
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/// | "march" | "mar"
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/// | "april" | "apr"
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/// | "may"
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/// | "june" | "jun"
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/// | "july" | "jul"
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/// | "august" | "aug"
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/// | "september" | "sept" | "sep"
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/// | "october" | "oct"
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/// | "november" | "nov"
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/// | "december" | "dec" ;
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/// year = dec_uint ;
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/// month = dec_uint ;
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/// day = dec_uint ;
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///
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/// weekday = [ ordinal ] day [ "," ] ;
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/// literal_month = "january" | "jan"
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/// | "february" | "feb"
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/// | "march" | "mar"
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/// | "april" | "apr"
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/// | "may"
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/// | "june" | "jun"
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/// | "july" | "jul"
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/// | "august" | "aug"
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/// | "september" | "sept" | "sep"
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/// | "october" | "oct"
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/// | "november" | "nov"
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/// | "december" | "dec" ;
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///
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/// ordinal = number_ordinal | text_ordinal ;
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/// time = iso_time | meridiem_time ;
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///
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/// number_ordinal = [ "+" | "-" ] , dec_uint ;
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/// iso_time = hour24 , [ ":" , minute , [ ":" , second ] ] , [ time_offset ] ;
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///
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/// text_ordinal = "last" | "this" | "next" | "first"
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/// | "third" | "fourth" | "fifth" | "sixth"
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/// | "seventh" | "eighth" | "ninth" | "tenth"
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/// | "eleventh" | "twelfth" ;
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/// meridiem_time = hour12 , [ ":" , minute , [ ":" , second ] ] , meridiem ;
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/// meridiem = "am" | "pm" | "a.m." | "p.m." ;
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///
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/// day = "monday" | "mon" | "mon."
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/// | "tuesday" | "tue" | "tue." | "tues"
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/// | "wednesday" | "wed" | "wed." | "wednes"
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/// | "thursday" | "thu" | "thu." | "thur" | "thurs"
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/// | "friday" | "fri" | "fri."
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/// | "saturday" | "sat" | "sat."
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/// | "sunday" | "sun" | "sun." ;
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/// hour24 = dec_uint ;
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/// hour12 = dec_uint ;
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/// minute = dec_uint ;
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/// second = dec_uint ;
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///
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/// time_offset = ( "+" | "-" ) , dec_uint , [ ":" , dec_uint ] ;
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///
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/// relative = [ numeric_ordinal ] , unit , [ "ago" ] | day_shift ;
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///
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/// unit = "year" | "years"
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/// | "month" | "months"
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/// | "fortnight" | "fortnights"
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/// | "week" | "weeks"
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/// | "day" | "days"
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/// | "hour" | "hours"
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/// | "minute" | "minutes" | "min" | "mins"
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/// | "second" | "seconds" | "sec" | "secs" ;
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///
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/// day_shift = "tomorrow" | "yesterday" | "today" | "now" ;
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///
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/// weekday = [ ordinal ] , day , [ "," ] ;
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///
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/// ordinal = numeric_ordinal | text_ordinal ;
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/// numeric_ordinal = [ "+" | "-" ] , dec_uint ;
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/// text_ordinal = "last" | "this" | "next" | "first"
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/// | "third" | "fourth" | "fifth" | "sixth"
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/// | "seventh" | "eighth" | "ninth" | "tenth"
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/// | "eleventh" | "twelfth" ;
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///
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/// day = "monday" | "mon" | "mon."
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/// | "tuesday" | "tue" | "tue." | "tues"
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/// | "wednesday" | "wed" | "wed." | "wednes"
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/// | "thursday" | "thu" | "thu." | "thur" | "thurs"
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/// | "friday" | "fri" | "fri."
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/// | "saturday" | "sat" | "sat."
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/// | "sunday" | "sun" | "sun." ;
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///
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/// timezone = named_zone , [ time_offset ] ;
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///
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/// optional_whitespace = { whitespace } ;
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/// ```
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pub(crate) fn parse(input: &mut &str) -> ModalResult<DateTimeBuilder> {
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trace("parse", alt((parse_timestamp, parse_items))).parse_next(input)

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