/// <summary>
/// Handle a leading "%" which acts as a pseudo-escape - it's mostly used to allow format strings such as "%H" to mean
/// "use a custom format string consisting of H instead of a standard pattern H".
/// </summary>
internal static void HandlePercent(PatternCursor pattern, SteppedPatternBuilder <TResult, TBucket> builder)
{
if (pattern.HasMoreCharacters)
{
if (pattern.PeekNext() != '%')
{
// Handle the next character as normal
return;
}
throw new InvalidPatternException(TextErrorMessages.PercentDoubled);
}
throw new InvalidPatternException(TextErrorMessages.PercentAtEndOfString);
}
/// <summary>
/// Handles date, time and date/time embedded patterns.
/// </summary>
internal void AddEmbeddedLocalPartial(
PatternCursor pattern,
Func <TBucket, LocalDatePatternParser.LocalDateParseBucket> dateBucketExtractor,
Func <TBucket, LocalTimePatternParser.LocalTimeParseBucket> timeBucketExtractor,
Func <TResult, LocalDate> dateExtractor,
Func <TResult, LocalTime> timeExtractor,
// null if date/time embedded patterns are invalid
Func <TResult, LocalDateTime>?dateTimeExtractor)
{
// This will be d (date-only), t (time-only), or < (date and time)
// If it's anything else, we'll see the problem when we try to get the pattern.
var patternType = pattern.PeekNext();
if (patternType == 'd' || patternType == 't')
{
pattern.MoveNext();
}
string embeddedPatternText = pattern.GetEmbeddedPattern();
switch (patternType)
{
case '<':
{
var sampleBucket = CreateSampleBucket();
var templateTime = timeBucketExtractor(sampleBucket).TemplateValue;
var templateDate = dateBucketExtractor(sampleBucket).TemplateValue;
if (dateTimeExtractor is null)
{
throw new InvalidPatternException(TextErrorMessages.InvalidEmbeddedPatternType);
}
AddField(PatternFields.EmbeddedDate, 'l');
AddField(PatternFields.EmbeddedTime, 'l');
AddEmbeddedPattern(
LocalDateTimePattern.Create(embeddedPatternText, FormatInfo, templateDate + templateTime).UnderlyingPattern,
(bucket, value) =>
{
var dateBucket = dateBucketExtractor(bucket);
var timeBucket = timeBucketExtractor(bucket);
dateBucket.Calendar = value.Calendar;
dateBucket.Year = value.Year;
dateBucket.MonthOfYearNumeric = value.Month;
dateBucket.DayOfMonth = value.Day;
timeBucket.Hours24 = value.Hour;
timeBucket.Minutes = value.Minute;
timeBucket.Seconds = value.Second;
timeBucket.FractionalSeconds = value.NanosecondOfSecond;
},
dateTimeExtractor);
break;
}
case 'd':
AddEmbeddedDatePattern('l', embeddedPatternText, dateBucketExtractor, dateExtractor);
break;
case 't':
AddEmbeddedTimePattern('l', embeddedPatternText, timeBucketExtractor, timeExtractor);
break;
default:
throw new InvalidOperationException("Bug in Noda Time: embedded pattern type wasn't date, time, or date+time");
}
}
