private void SelectItemList(SelectClause currentClause)
{
while (true)
{
SelectItem(currentClause);
if (_parser.CurrentTokenKind == QueryExpressionTokenKind.Comma)
{
_parser.NextToken();
}
else
{
break;
}
}
}
private void OrderByItemList()
{
while (true)
{
var expression = _parser.CommonExpr();
var direction = OrderByDirection.Acending;
if (_parser.CurrentTokenKind == QueryExpressionTokenKind.Keyword)
{
var order = (string)_parser.TokenData;
switch (order)
{
case "asc":
direction = OrderByDirection.Acending;
_parser.NextToken();
break;
case "desc":
direction = OrderByDirection.Descending;
_parser.NextToken();
break;
default:
_parser.ReportError(
$"Invalid token '{order}' after sort expression, expecting 'asc' or 'desc'");
return;
}
}
var item = new OrderByClause(expression, direction);
_clauses.Add(item);
if (_parser.CurrentTokenKind == QueryExpressionTokenKind.Comma)
{
_parser.NextToken();
}
else
{
break;
}
}
}
private void ExpandItemList()
{
while (true)
{
ExpandItem();
if (_parser.CurrentTokenKind == QueryExpressionTokenKind.Comma)
{
_parser.NextToken();
}
else
{
break;
}
}
}
