public override bool Parse(IItemFactory itemFactory, ITextProvider text, ITokenStream stream)
{
if (AtRule.IsRule(text, stream, "for"))
{
ParseRule(itemFactory, text, stream);
var variable = new VariableName(SassClassifierType.VariableDefinition);
if (variable.Parse(itemFactory, text, stream))
{
Variable = variable;
Children.Add(Variable);
}
if (IsKeyword(text, stream, "from"))
{
FromKeyword = Children.AddCurrentAndAdvance(stream, SassClassifierType.Keyword);
while (!(IsKeyword(text, stream, "to") || IsKeyword(text, stream, "through")))
{
ParseItem fromValue;
if (itemFactory.TryCreateParsedOrDefault(this, text, stream, out fromValue))
{
FromExpressionValues.Add(fromValue);
Children.Add(fromValue);
}
}
}
bool isToKeyword = IsKeyword(text, stream, "to");
bool isThroughKeyword = !isToKeyword && IsKeyword(text, stream, "through");
if (isToKeyword || isThroughKeyword)
{
if (isToKeyword)
{
ToKeyword = Children.AddCurrentAndAdvance(stream, SassClassifierType.Keyword);
}
if (isThroughKeyword)
{
ThroughKeyword = Children.AddCurrentAndAdvance(stream, SassClassifierType.Keyword);
}
while (!IsRangeTerminator(stream.Current.Type))
{
ParseItem rangeValue;
if (itemFactory.TryCreateParsedOrDefault(this, text, stream, out rangeValue))
{
RangeExpressionValues.Add(rangeValue);
Children.Add(rangeValue);
}
}
}
ParseBody(itemFactory, text, stream);
}
return(Children.Count > 0);
}
public override void Freeze()
{
base.Freeze();
FromExpressionValues.TrimExcess();
RangeExpressionValues.TrimExcess();
}
