/// <summary>
/// Scans the current medium for the @media or @import rule.
/// </summary>
public CssMedium CreateMedium(ref CssToken token)
{
var medium = new CssMedium();
CollectTrivia(ref token);
if (token.Type == CssTokenType.Ident)
{
var identifier = token.Data;
if (identifier.Isi(Keywords.Not))
{
medium.IsInverse = true;
token = NextToken();
CollectTrivia(ref token);
}
else if (identifier.Isi(Keywords.Only))
{
medium.IsExclusive = true;
token = NextToken();
CollectTrivia(ref token);
}
}
if (token.Type == CssTokenType.Ident)
{
medium.Type = token.Data;
token = NextToken();
CollectTrivia(ref token);
if (token.Type != CssTokenType.Ident || !token.Data.Isi(Keywords.And))
{
return medium;
}
token = NextToken();
CollectTrivia(ref token);
}
do
{
if (token.Type != CssTokenType.RoundBracketOpen)
{
return null;
}
token = NextToken();
CollectTrivia(ref token);
var feature = CreateFeature(ref token);
if (feature != null)
{
medium.AppendChild(feature);
}
if (token.Type != CssTokenType.RoundBracketClose)
{
return null;
}
token = NextToken();
CollectTrivia(ref token);
if (feature == null)
{
return null;
}
if (token.Type != CssTokenType.Ident || !token.Data.Isi(Keywords.And))
{
break;
}
token = NextToken();
CollectTrivia(ref token);
}
while (token.Type != CssTokenType.EndOfFile);
return medium;
}
