private ISqlNode ParseQualifiedIdentifier(ITokenizer t)
{
// ( <Qualifier> "." )? <Identifier>
var next = t.Peek();
if (!next.IsType(SqlTokenType.Identifier) && !next.IsType(SqlTokenType.Keyword))
{
return(null);
}
t.GetNext();
if (!t.Peek().Is(SqlTokenType.Symbol, "."))
{
return(new SqlIdentifierNode(next));
}
t.GetNext();
var qualifier = new SqlIdentifierNode(next);
var identifier = t.GetNext();
return(new SqlQualifiedIdentifierNode
{
Location = qualifier.Location,
Qualifier = qualifier,
Identifier = identifier.Is(SqlTokenType.Symbol, "*") ? (ISqlNode) new SqlOperatorNode("*") : new SqlIdentifierNode(identifier)
});
}
public ISqlNode VisitIdentifier(SqlIdentifierNode n)
{
Append("[", n.Name, "]");
return(n);
}
public override ISqlNode VisitIdentifier(SqlIdentifierNode n)
{
Current.GetInfoOrThrow(n.Name, n.Location);
return(n);
}
public virtual ISqlNode VisitIdentifier(SqlIdentifierNode n) => n;
public override ISqlNode VisitIdentifier(SqlIdentifierNode n)
{
return(base.VisitIdentifier(n));
}
