private SimpleSelectorSequence ParseSimpleSelectorSequence()
{
ParseErrorIfEnd();
TypeSelector typeSelector = ParseTypeSelector() ?? ParseUniversalSelector();
List <IFilter> filters = new List <IFilter>();
while (true)
{
if (End)
{
break;
}
IFilter filterSelector = ParseIDFilter() ?? ParseClassFilter() ??
ParseAttributeFilter() ?? ParsePseudoFilter() ?? ParseNegationFilter();
if (filterSelector != null)
{
filters.Add(filterSelector);
}
else
{
break;
}
}
if (typeSelector == null)
{
if (filters.Count == 0)
{
ParseError("Expected hash, class, attrib, pseudo, or negation");
}
typeSelector = new UniversalSelector();
}
return(new SimpleSelectorSequence(typeSelector, filters));
}
private TypeSelector ParseUniversalSelector()
{
TypeSelector selector = null;
SelectorNamespacePrefix prefix = ParseNamespacePrefix();
if (CurrentToken != null && CurrentToken.Text == "*")
{
selector = new UniversalSelector(prefix);
currentPosition++;
}
return(selector);
}
private TypeSelector ParseUniversalSelector()
{
TypeSelector selector = null;
SelectorNamespacePrefix prefix = ParseNamespacePrefix();
if (CurrentToken != null && CurrentToken.Text == "*")
{
selector = new UniversalSelector(prefix);
currentPosition++;
}
return selector;
}
private SimpleSelectorSequence ParseSimpleSelectorSequence()
{
ParseErrorIfEnd();
TypeSelector typeSelector = ParseTypeSelector() ?? ParseUniversalSelector();
List<IFilter> filters = new List<IFilter>();
while (true)
{
if (End)
{
break;
}
IFilter filterSelector = ParseIDFilter() ?? ParseClassFilter() ??
ParseAttributeFilter() ?? ParsePseudoFilter() ?? ParseNegationFilter();
if (filterSelector != null)
{
filters.Add(filterSelector);
}
else
{
break;
}
}
if (typeSelector == null)
{
if (filters.Count == 0)
{
ParseError("Expected hash, class, attrib, pseudo, or negation");
}
typeSelector = new UniversalSelector();
}
return new SimpleSelectorSequence(typeSelector, filters);
}