public virtual LessNode VisitSelectorElement(LessParser.SelectorElementContext context)
{
throw new System.NotImplementedException();
}
public override LessNode VisitSelectorElement(LessParser.SelectorElementContext context)
{
IEnumerable <IdentifierPart> GetIdentifierParts()
{
string prefix = context.HASH()?.GetText()
?? context.DOT()?.GetText();
foreach (var identifierPart in this.GetIdentifierParts(prefix, context.identifier()))
{
yield return(identifierPart);
}
}
Identifier GetPseudoclassIdentifier()
{
var pseudo = context.pseudoClass();
if (pseudo == null)
{
return(null);
}
string prefix = pseudo.COLON()?.GetText()
?? pseudo.COLONCOLON()?.GetText()
?? "";
return(new Identifier(new PseudoclassIdentifierPart(prefix, pseudo.pseudoclassIdentifier().GetText(),
(Expression)pseudo.expression()?.Accept(this))));
}
Identifier GetIdentifier()
{
return(new Identifier(GetIdentifierParts()));
}
SelectorElement GetElement(bool hasTrailingWhitespace)
{
var parentSelector = context.parentSelectorReference();
if (parentSelector != null)
{
return(new ParentReferenceSelectorElement(hasTrailingWhitespace));
}
if (context.pseudoClass() != null)
{
return(new IdentifierSelectorElement(GetPseudoclassIdentifier(), hasTrailingWhitespace));
}
if (context.identifier() != null)
{
return(new IdentifierSelectorElement(GetIdentifier(), hasTrailingWhitespace));
}
var attrib = context.attrib();
if (attrib != null)
{
var identifier = (Identifier)attrib.identifier().Accept(this);
var op = attrib.attribRelate();
if (op != null)
{
return(new AttributeSelectorElement(identifier, op.GetText(), (Expression)attrib.attribValue().Accept(this),
hasTrailingWhitespace));
}
return(new AttributeSelectorElement(identifier, hasTrailingWhitespace));
}
// The lexer rules might match an ID selector as a color, so we account for that here
if (context.HexColor() != null)
{
return(new IdentifierSelectorElement(new Identifier(new ConstantIdentifierPart(context.HexColor().GetText())),
hasTrailingWhitespace));
}
return(new CombinatorSelectorElement(context.combinator().GetText(), hasTrailingWhitespace));
}
bool HasTrailingWhitespace()
{
int index = context.Stop.TokenIndex + 1;
while (index < tokenStream.Size)
{
var tokenType = tokenStream.Get(index).Type;
if (tokenType == LessLexer.WS)
{
return(true);
}
if (tokenType != LessLexer.COMMENT)
{
return(false);
}
index++;
}
return(false);
}
return(GetElement(HasTrailingWhitespace()));
}
