public string Parse(IParserInput input)
{
var sb = new StringBuilder();
if (!input.TryReadChar(out var ch))
{
throw new ParserException("parser error in word.");
}
sb.Append(ch);
var done = false;
do
{
if (input.TryPeekChar(out ch) && _isValidWordCharFunc(ch))
{
input.ReadLookahead();
sb.Append(ch);
}
else
{
done = true;
}
} while (!done);
return(sb.ToString());
}
public string Parse(IParserInput input)
{
_builder.Clear();
if (!input.TryReadChar(out var quotation))
{
if (quotation != _quotation)
{
throw new ArgumentException($"strings must start with the quotation char '{quotation}' 0x{quotation.ToHexString()}", nameof(input));
}
}
var done = false;
while (!done)
{
if (!input.TryReadChar(out var nextChar))
{
throw new ParserException("end of input in string error");
}
if (nextChar == '\n')
{
throw new ParserException("unclosed string error");
}
if (nextChar == _quotation)
{
if (_allowDoubleQuotationEscaping && input.TryPeekChar(out var doubleQuoteEscapeCandidate) && doubleQuoteEscapeCandidate == _quotation)
{
input.ReadLookahead();
_builder.Append(nextChar);
}
else
{
done = true;
}
}