// IS
public override ASTNode VisitInfixIs(CLUBSParser.InfixIsContext context)
{
IsNode node = new IsNode(new SourcePosition(context.start));
node.Left = Visit(context.left) as ExpressionNode;
node.Right = Visit(context.right) as ExpressionNode;
return(node);
}
// IS
public override string Visit(IsNode node, object obj)
{
// Different behavior in Query, as this compares the underlying CardValues in a Card
if (obj is QueryNode)
{
return($"x.CardValues.Any(y => y.Parent == \"{Visit(node.Left)}\" && y.Name == \"{Visit(node.Right)}\")\n");
}
else // If not a query, append regular equality comparison operator
{
return($"{Visit(node.Left)} == {Visit(node.Right)}");
}
}
// IS
public override TypeNode Visit(IsNode node, object obj)
{
TypeNode leftType = Visit(node.Left);
TypeNode rightType = Visit(node.Right);
// If left and right types are not the same, log error
if (leftType != rightType)
{
ErrorLogger.LogError(new IncompatibleTypesError(leftType, rightType, node.Left.SourcePosition));
return(new ErrorTypeNode(node.SourcePosition));
}
return(new BoolTypeNode(node.SourcePosition));
}
public abstract T Visit(IsNode node, object obj);