public simpleSelector Parse()
{
// first check whether this is a combinartor or not.
if (IsCombinatorSelector(_selectorText))
{
parseCombinartor();
return(simple);
}
//TODO: to be checked.
if (_selectorText.Contains("::"))
{
parsePseudoElement();
return(simple);
}
if (_selectorText.Contains(":"))
{
parsePseudoClass();
return(simple);
}
while (true)
{
char currentChar = ReadNext();
if (stop)
{
break;
}
/// An ID selector contains a "number sign" (U+0023, #) immediately followed by the ID value
if (currentChar == '\u0023')
{
parseIdSelector();
return(simple);
}
/// The universal selector, written as a CSS qualified name [CSS3NAMESPACE] with an asterisk (* U+002A) as the local name
else if (currentChar == '\u002A')
{
if (_selectorText.Trim() != '\u002A'.ToString())
{
_buffer.Append(currentChar);
continue;
}
else
{
return(new universalSelector());
}
}
///Working with HTML, authors may use the "period" notation (also known as "full stop", U+002E, .) as an alternative to the ~= notation when representing the class attribute.
else if (currentChar == '\u002E')
{
parseClassSelector();
return(simple);
}
else if (currentChar == '[')
{
parseAttributeSelecotr();
return(simple);
}
else if (currentChar == ':')
{
if (LookupNext() == ':')
{
parsePseudoElement();
}
else
{
parsePseudoClass();
}
return(simple);
}
else
{
_buffer.Append(currentChar);
}
}
if (simple == null || simple.Type == enumSimpleSelectorType.unknown)
{
// nothing mathc, this is a type selector.
typeSelector typeselector = new typeSelector();
typeselector.elementE = AppendCleanBuffer(_buffer);
typeselector.wholeText = typeselector.elementE;
simple = typeselector;
}
return(simple);
}
private static bool matchType(Element element, typeSelector typeselector)
{
return(element.tagName == typeselector.elementE.ToLower());
}