private static LinqOp BuildTupleOrderingOps(List <OrderingClause> clauses)
{
// tuple of size n + 1
//
// TRANSLATION:
// . OrderBy ( x => x[0] ) . ThenBy ( x => x[1] ) . ... . ThenBy ( x => x[n - 1] ) . Select ( x => x[n] )
LinqOp last_op = new LinqOp.Select(null, null, new LinqTupleItemAccess(clauses.Count, clauses.Count + 1));
for (int i = clauses.Count - 1; i >= 0; i--)
{
last_op = new LinqOp.OrderBy(null, null, new LinqTupleItemAccess(i, clauses.Count + 1), clauses[i].Ordering, last_op, i != 0);
}
return(last_op);
}
private static LinqOp BuildOrderingOps(DirectVarUse keyVar, DirectVarUse valueVar,
List <OrderingClause> /*!*/ clauses, LinqOp lastOp)
{
// PATTERNs:
// from x in e orderby k1 , k2, ..., kn [select v | group v by g]
//
// TRANSLATIONs:
// ( e ) . OrderBy ( x => k1 ) . ThenBy ( x => k2 ) ... . ThenBy (x => kn) . Select ( x => v )
// ( e ) . OrderBy ( x => k1 ) . ThenBy ( x => k2 ) ... . ThenBy (x => kn) . GroupBy ( x => g, x => v )
Debug.Assert(clauses != null && clauses.Count > 0);
for (int i = clauses.Count - 1; i >= 0; i--)
{
lastOp = new LinqOp.OrderBy(keyVar, valueVar, clauses[i].Expression, clauses[i].Ordering, lastOp, i != 0);
}
return(lastOp);
}
private static LinqOp BuildTupleOrderingOps(List<OrderingClause> clauses)
{
// tuple of size n + 1
//
// TRANSLATION:
// . OrderBy ( x => x[0] ) . ThenBy ( x => x[1] ) . ... . ThenBy ( x => x[n - 1] ) . Select ( x => x[n] )
LinqOp last_op = new LinqOp.Select(null, null, new LinqTupleItemAccess(clauses.Count, clauses.Count + 1));
for (int i = clauses.Count - 1; i >= 0; i--)
last_op = new LinqOp.OrderBy(null, null, new LinqTupleItemAccess(i, clauses.Count + 1), clauses[i].Ordering, last_op, i != 0);
return last_op;
}
private static LinqOp BuildOrderingOps(DirectVarUse keyVar, DirectVarUse valueVar,
List<OrderingClause>/*!*/ clauses, LinqOp lastOp)
{
// PATTERNs:
// from x in e orderby k1 , k2, ..., kn [select v | group v by g]
//
// TRANSLATIONs:
// ( e ) . OrderBy ( x => k1 ) . ThenBy ( x => k2 ) ... . ThenBy (x => kn) . Select ( x => v )
// ( e ) . OrderBy ( x => k1 ) . ThenBy ( x => k2 ) ... . ThenBy (x => kn) . GroupBy ( x => g, x => v )
Debug.Assert(clauses != null && clauses.Count > 0);
for (int i = clauses.Count - 1; i >= 0; i--)
lastOp = new LinqOp.OrderBy(keyVar, valueVar, clauses[i].Expression, clauses[i].Ordering, lastOp, i != 0);
return lastOp;
}
