internal static void HandleBackslash(PatternCursor pattern, SteppedPatternBuilder <TResult, TBucket> builder)
{
if (!pattern.MoveNext())
{
throw new InvalidPatternException(TextErrorMessages.EscapeAtEndOfString);
}
builder.AddLiteral(pattern.Current, ParseResult <TResult> .EscapedCharacterMismatch);
}
/// <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);
}
private static void HandleHalfAmPmDesignator <TResult, TBucket>
(int count, string specifiedDesignator, int specifiedDesignatorValue, Func <TResult, int> hourOfDayGetter, Action <TBucket, int> amPmSetter,
SteppedPatternBuilder <TResult, TBucket> builder)
where TBucket : ParseBucket <TResult>
{
CompareInfo compareInfo = builder.FormatInfo.CompareInfo;
if (count == 1)
{
string abbreviation = specifiedDesignator.Substring(0, 1);
builder.AddParseAction((str, bucket) =>
{
int value = str.MatchCaseInsensitive(abbreviation, compareInfo, true) ? specifiedDesignatorValue : 1 - specifiedDesignatorValue;
amPmSetter(bucket, value);
return(null);
});
builder.AddFormatAction((value, sb) =>
{
// Only append anything if it's the non-empty designator.
if (hourOfDayGetter(value) / 12 == specifiedDesignatorValue)
{
sb.Append(specifiedDesignator[0]);
}
});
return;
}
builder.AddParseAction((str, bucket) =>
{
int value = str.MatchCaseInsensitive(specifiedDesignator, compareInfo, true) ? specifiedDesignatorValue : 1 - specifiedDesignatorValue;
amPmSetter(bucket, value);
return(null);
});
builder.AddFormatAction((value, sb) =>
{
// Only append anything if it's the non-empty designator.
if (hourOfDayGetter(value) / 12 == specifiedDesignatorValue)
{
sb.Append(specifiedDesignator);
}
});
}
internal static void HandleQuote(PatternCursor pattern, SteppedPatternBuilder <TResult, TBucket> builder)
{
string quoted = pattern.GetQuotedString(pattern.Current);
builder.AddLiteral(quoted, ParseResult <TResult> .QuotedStringMismatch);
}