public static bool RegionMatchesAscii(ICharSequence cs, bool ignoreCase, int csStart, ICharSequence seq, int start, int length)
{
if (cs is null || seq is null)
{
return(false);
}
switch (cs)
{
case StringCharSequence _ when !ignoreCase && seq is StringCharSequence:
//we don't call regionMatches from String for ignoreCase==true. It's a general purpose method,
//which make complex comparison in case of ignoreCase==true, which is useless for ASCII-only strings.
//To avoid applying this complex ignore-case comparison, we will use regionMatchesCharSequences
return(cs.RegionMatches(csStart, seq, start, length));
case AsciiString asciiString:
return(ignoreCase
? asciiString.RegionMatchesIgnoreCase(csStart, seq, start, length)
: asciiString.RegionMatches(csStart, seq, start, length));
default:
return(RegionMatchesCharSequences(cs, csStart, seq, start, length,
ignoreCase ? AsciiCaseInsensitiveCharComparator : DefaultCharComparator));
}
}
public static bool StartsWith(this ICharSequence seq, ICharSequence prefix, int start) => seq.RegionMatches(start, prefix, 0, prefix.Count) ? true : false;