private Select VisitSelect(Select select)
{
JoinStatementList newJoinStatementList = new JoinStatementList();
int numJoinStatements = 0;
for (int i = 0, n = select.joinStatementList.Length; i < n; i++)
{
if (select.joinStatementList[i] != null)
numJoinStatements++;
if (numJoinStatements <= 64)
newJoinStatementList.Add((JoinStatement)this.VisitJoinStatement(select.joinStatementList[i]));
else
this.HandleError(select.joinStatementList[i], Error.TooManyJoinStatements);
}
select.joinStatementList = newJoinStatementList;
return select;
}
private Select VisitSelect(Select select)
{
JoinStatementList newJoinStatementList = new JoinStatementList();
for (int i = 0, n = select.joinStatementList.Length; i < n; i++)
newJoinStatementList.Add((JoinStatement)this.VisitJoinStatement(select.joinStatementList[i]));
select.joinStatementList = newJoinStatementList;
return select;
}
private Select VisitSelect(Select select)
{
JoinStatementList newJoinStatementList = new JoinStatementList();
for (int i = 0, n = select.joinStatementList.Length; i < n; i++)
{
JoinStatement js = this.VisitJoinStatement(select.joinStatementList[i]);
js.visible = select.visible;
newJoinStatementList.Add(js);
}
select.joinStatementList = newJoinStatementList;
return select;
}
private Select VisitSelect(Select select)
{
if (select == null) return null;
PushSelectStatement(select);
JoinStatementList newJoinStatementList = new JoinStatementList();
int timeoutIndex = -1;
for (int i = 0, n = select.joinStatementList.Length; i < n; i++)
{
if (select.joinStatementList[i].joinPatternList[0] is TimeoutPattern)
{
if (timeoutIndex >= 0)
{
// If we've already seen a "timeout" join statement, then skip
// subsequent ones and report an error.
HandleError(select.joinStatementList[i], Error.TooManyTimeouts);
continue;
}
timeoutIndex = i;
}
JoinStatement newJoinStatement = (JoinStatement)this.VisitJoinStatement(select.joinStatementList[i]);
if (newJoinStatement != null)
newJoinStatementList.Add(newJoinStatement);
}
select.joinStatementList = newJoinStatementList;
// If a timeout is present and it isn't already last, move it to the
// end of the list. This will be helpful during code generation.
if (timeoutIndex >= 0 && timeoutIndex != (select.joinStatementList.Length - 1))
{
JoinStatement temp;
temp = select.joinStatementList[select.joinStatementList.Length - 1];
select.joinStatementList[select.joinStatementList.Length - 1] = select.joinStatementList[timeoutIndex];
select.joinStatementList[timeoutIndex] = temp;
}
if (select.joinStatementList.Length == 1)
select.deterministicSelection = true;
PopSelectStatement();
if (select.joinStatementList.Length == 0)
return null;
return select;
}