public static IList<ICssSelectorItem> CreateCssSelector(String selector) {
IList<ICssSelectorItem> cssSelectorItems = new List<ICssSelectorItem>();
Match itemMatcher = selectorPattern.Match(selector);
bool isTagSelector = false;
int crc = 0;
while (itemMatcher.Success) {
String selectorItem = itemMatcher.Groups[0].Value;
crc += selectorItem.Length;
switch (selectorItem[0]) {
case '#':
cssSelectorItems.Add(new CssIdSelector(selectorItem.Substring(1)));
break;
case '.':
cssSelectorItems.Add(new CssClassSelector(selectorItem.Substring(1)));
break;
case '[':
cssSelectorItems.Add(new CssAttributeSelector(selectorItem));
break;
case ':':
cssSelectorItems.Add(new CssPseudoSelector(selectorItem));
break;
case ' ':
case '+':
case '>':
case '~':
if (cssSelectorItems.Count == 0) return null;
ICssSelectorItem lastItem = cssSelectorItems[cssSelectorItems.Count - 1];
ICssSelectorItem currItem = new CssSeparatorSelector(selectorItem[0]);
if (lastItem is CssSeparatorSelector) {
if (selectorItem[0] == ' ')
break;
else if (lastItem.Separator == ' ')
cssSelectorItems[cssSelectorItems.Count - 1] = currItem;
else
return null;
} else {
cssSelectorItems.Add(currItem);
isTagSelector = false;
}
break;
default: //and case '*':
if (isTagSelector)
return null;
isTagSelector = true;
cssSelectorItems.Add(new CssTagSelector(selectorItem));
break;
}
itemMatcher = itemMatcher.NextMatch();
}
if (selector.Length == 0 || selector.Length != crc)
return null;
return cssSelectorItems;
}
public static IList <ICssSelectorItem> CreateCssSelector(String selector)
{
IList <ICssSelectorItem> cssSelectorItems = new List <ICssSelectorItem>();
Match itemMatcher = selectorPattern.Match(selector);
bool isTagSelector = false;
int crc = 0;
while (itemMatcher.Success)
{
String selectorItem = itemMatcher.Groups[0].Value;
crc += selectorItem.Length;
switch (selectorItem[0])
{
case '#':
cssSelectorItems.Add(new CssIdSelector(selectorItem.Substring(1)));
break;
case '.':
cssSelectorItems.Add(new CssClassSelector(selectorItem.Substring(1)));
break;
case '[':
cssSelectorItems.Add(new CssAttributeSelector(selectorItem));
break;
case ':':
cssSelectorItems.Add(new CssPseudoSelector(selectorItem));
break;
case ' ':
case '+':
case '>':
case '~':
if (cssSelectorItems.Count == 0)
{
return(null);
}
ICssSelectorItem lastItem = cssSelectorItems[cssSelectorItems.Count - 1];
ICssSelectorItem currItem = new CssSeparatorSelector(selectorItem[0]);
if (lastItem is CssSeparatorSelector)
{
if (selectorItem[0] == ' ')
{
break;
}
else if (lastItem.Separator == ' ')
{
cssSelectorItems[cssSelectorItems.Count - 1] = currItem;
}
else
{
return(null);
}
}
else
{
cssSelectorItems.Add(currItem);
isTagSelector = false;
}
break;
default: //and case '*':
if (isTagSelector)
{
return(null);
}
isTagSelector = true;
cssSelectorItems.Add(new CssTagSelector(selectorItem));
break;
}
itemMatcher = itemMatcher.NextMatch();
}
if (selector.Length == 0 || selector.Length != crc)
{
return(null);
}
return(cssSelectorItems);
}