private void ByAttribute()
{
TokenQueue cq = new TokenQueue(tq.ChompBalanced('[', ']')); // content queue
string key = cq.ConsumeToAny(AttributeEvals); // eq, not, start, end, contain, match, (no val)
Validate.NotEmpty(key);
cq.ConsumeWhitespace();
if (cq.IsEmpty())
{
if (key.StartsWith("^", StringComparison.Ordinal))
{
evals.Add(new Evaluator.AttributeStarting(key.Substring(1))); /*substring*/
}
else
{
evals.Add(new Evaluator.Attribute(key));
}
}
else
{
if (cq.MatchChomp("="))
{
evals.Add(new Evaluator.AttributeWithValue(key, cq.Remainder()));
}
else if (cq.MatchChomp("!="))
{
evals.Add(new Evaluator.AttributeWithValueNot(key, cq.Remainder()));
}
else if (cq.MatchChomp("^="))
{
evals.Add(new Evaluator.AttributeWithValueStarting(key, cq.Remainder()));
}
else if (cq.MatchChomp("$="))
{
evals.Add(new Evaluator.AttributeWithValueEnding(key, cq.Remainder()));
}
else if (cq.MatchChomp("*="))
{
evals.Add(new Evaluator.AttributeWithValueContaining(key, cq.Remainder()));
}
else if (cq.MatchChomp("~="))
{
evals.Add(new Evaluator.AttributeWithValueMatching(key, new Regex(cq.Remainder(), RegexOptions.Compiled)));
}
else
{
throw new Selector.SelectorParseException("Could not parse attribute query '{0}': unexpected token at '{1}'", query, cq.Remainder());
}
}
}
