void pcrePatternCheck(string name, BoundExpression patternExpression)
{
if (patternExpression.ConstantValue.TryConvertToString(out var pattern))
{
try
{
var regex = new PerlRegex.Regex(pattern);
}
catch (PerlRegex.RegexParseException error)
{
_diagnostics.Add(
_routine, patternExpression.GetTextSpan(),
ErrorCode.WRN_PCRE_Pattern_Error, error.Message, error.Offset.HasValue ? error.Offset.Value.ToString() : "unknown");
}
}
}
