| 35 | using namespace datetime_parse_util; |
| 36 | |
| 37 | bool DateParser::ParseSimpleDateFormat(const char* str, int len, |
| 38 | const DateTimeFormatContext& dt_ctx, DateValue* date) { |
| 39 | DCHECK(dt_ctx.toks.size() > 0); |
| 40 | // 'dt_ctx' must have date tokens. Time tokens are accepted but ignored. |
| 41 | DCHECK(dt_ctx.has_date_toks); |
| 42 | DCHECK(date != nullptr); |
| 43 | |
| 44 | DateTimeParseResult dt_result; |
| 45 | if (UNLIKELY(str == nullptr || len <= 0 |
| 46 | || !SimpleDateFormatParser::ParseDateTime(str, len, dt_ctx, &dt_result))) { |
| 47 | *date = DateValue(); |
| 48 | return false; |
| 49 | } |
| 50 | |
| 51 | int year = dt_result.realign_year ? |
| 52 | RealignYear(dt_result, dt_ctx.century_break_ptime) : |
| 53 | dt_result.year; |
| 54 | |
| 55 | *date = DateValue(year, dt_result.month, dt_result.day); |
| 56 | return date->IsValid(); |
| 57 | } |
| 58 | |
| 59 | int DateParser::RealignYear(const DateTimeParseResult& dt_result, |
| 60 | const ptime& century_break) { |