/// <summary>
/// Returns the expansion of the passed replacement pattern. For
/// example, if the replacement pattern is ?$1$2?, Result returns the concatenation
/// of Group(1).ToString() and Group(2).ToString().
/// </summary>
public virtual string Result(string replacement)
{
if (replacement is null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.replacement);
}
Regex?regex = _regex;
if (regex is null)
{
throw new NotSupportedException(SR.NoResultOnFailed);
}
// Gets the weakly cached replacement helper or creates one if there isn't one already.
RegexReplacement repl = RegexReplacement.GetOrCreate(regex.RegexReplacementWeakReference, replacement, regex.caps !, regex.capsize, regex.capnames !, regex.roptions);
SegmentStringBuilder segments = SegmentStringBuilder.Create();
repl.ReplacementImpl(ref segments, this);
return(segments.ToString());
}
