/// <summary>
/// 4.4.12. Number state
/// </summary>
CssToken NumberStart(Char current)
{
while (true)
{
if (current.IsOneOf(Symbols.Plus, Symbols.Minus))
{
StringBuffer.Append(current);
current = GetNext();
if (current == Symbols.Dot)
{
StringBuffer.Append(current);
StringBuffer.Append(GetNext());
return NumberFraction();
}
StringBuffer.Append(current);
return NumberRest();
}
else if (current == Symbols.Dot)
{
StringBuffer.Append(current);
StringBuffer.Append(GetNext());
return NumberFraction();
}
else if (current.IsDigit())
{
StringBuffer.Append(current);
return NumberRest();
}
current = GetNext();
}
}
/// <summary>
/// 4.4.21. URL-unquoted state
/// </summary>
CssToken UrlUQ(Char current, String functionName)
{
while (true)
{
if (current.IsSpaceCharacter())
{
return UrlEnd(functionName);
}
else if (current.IsOneOf(Symbols.RoundBracketClose, Symbols.EndOfFile))
{
return NewUrl(functionName, FlushBuffer());
}
else if (current.IsOneOf(Symbols.DoubleQuote, Symbols.SingleQuote, Symbols.RoundBracketOpen) || current.IsNonPrintable())
{
RaiseErrorOccurred(CssParseError.InvalidCharacter);
return UrlBad(functionName);
}
else if (current != Symbols.ReverseSolidus)
{
StringBuffer.Append(current);
}
else if (IsValidEscape(current))
{
current = GetNext();
StringBuffer.Append(ConsumeEscape(current));
}
else
{
RaiseErrorOccurred(CssParseError.InvalidCharacter);
return UrlBad(functionName);
}
current = GetNext();
}
}