/// <summary>Creates the combinator.</summary>
/// <param name="combinatorTree">The combinator tree.</param>
/// <returns>The combinator value.</returns>
private static Combinator CreateCombinatorNode(CommonTree combinatorTree)
{
var combinator = Combinator.None;
if (combinatorTree == null)
{
return(combinator);
}
var text = combinatorTree.FirstChildText();
switch (text)
{
case CssConstants.Plus:
combinator = Combinator.PlusSign;
break;
case CssConstants.Greater:
combinator = Combinator.GreaterThanSign;
break;
case CssConstants.Tilde:
combinator = Combinator.Tilde;
break;
case CssConstants.Whitespace:
combinator = GetWhitespaceCount(combinatorTree) > 0 ? Combinator.SingleSpace : Combinator.ZeroSpace;
break;
default:
throw new AstException("Encountered an invalid combinator.");
}
return(combinator);
}
