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LibJS: Implement parsing of TemporalMonthDayString

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This commit is contained in:
Linus Groh 2021-11-19 19:05:17 +00:00
parent 453c78215c
commit 3ddab2f4fe
5 changed files with 61 additions and 7 deletions
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31
Userland/Libraries/LibJS/Runtime/Temporal/ISO8601.cpp
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@ -210,6 +210,24 @@ bool ISO8601Parser::parse_date_day()
return true;
}
// https://tc39.es/proposal-temporal/#prod-DateSpecMonthDay
bool ISO8601Parser::parse_date_spec_month_day()
{
// TwoDashes :
// --
// DateSpecMonthDay :
// TwoDashes[opt] DateMonth -[opt] DateDay
StateTransaction transaction { *this };
m_state.lexer.consume_specific("--"sv);
if (!parse_date_month())
return false;
m_state.lexer.consume_specific('-');
if (!parse_date_day())
return false;
transaction.commit();
return true;
}
// https://tc39.es/proposal-temporal/#prod-Date
bool ISO8601Parser::parse_date()
{
@ -486,6 +504,18 @@ bool ISO8601Parser::parse_temporal_date_time_string()
return parse_calendar_date_time();
}
// https://tc39.es/proposal-temporal/#prod-TemporalMonthDayString
bool ISO8601Parser::parse_temporal_month_day_string()
{
// TemporalMonthDayString :
// DateSpecMonthDay
// DateTime
// NOTE: Reverse order here because `DateSpecMonthDay` can be a subset of `DateTime`,
// so we'd not attempt to parse that but may not exhaust the input string.
return parse_date_time()
|| parse_date_spec_month_day();
}
// https://tc39.es/proposal-temporal/#prod-TemporalTimeString
bool ISO8601Parser::parse_temporal_time_string()
{
@ -503,6 +533,7 @@ bool ISO8601Parser::parse_temporal_time_string()
#define JS_ENUMERATE_ISO8601_PRODUCTION_PARSERS \
__JS_ENUMERATE(TemporalDateString, parse_temporal_date_string) \
__JS_ENUMERATE(TemporalDateTimeString, parse_temporal_date_time_string) \
__JS_ENUMERATE(TemporalMonthDayString, parse_temporal_month_day_string) \
__JS_ENUMERATE(TemporalTimeString, parse_temporal_time_string)
Optional<ParseResult> parse_iso8601(Production production, StringView input)