protected System.Collections.Generic.List <Entry> Diff(MetaColumn mc, Column colA, long[] indexA, Column colB, long[] indexB)
{
int curA = 0;
int curB = 0;
int maxA = indexA.Length;
int maxB = indexB.Length;
var exp = ColumnCreator.CreateTypedExpressionColumn(mc.Type, colB);
System.Collections.Generic.List <Entry> entries = new System.Collections.Generic.List <Entry>();
while (curA < maxA && curB < maxB)
{
int r = colA.Compare(indexA[curA], exp, indexB[curB]);
switch (r)
{
case -1:
if (IsResultFilter(DiffResult.Deleted))
{
entries.Add(new Entry(DiffResult.Deleted, 0, indexA[curA]));
}
++curA;
break;
case 0:
if (IsResultFilter(DiffResult.Same))
{
entries.Add(new Entry(DiffResult.Same, 0, indexA[curA]));
}
++curA;
++curB;
break;
case 1:
if (IsResultFilter(DiffResult.New))
{
entries.Add(new Entry(DiffResult.New, 1, indexB[curB]));
}
++curB;
break;
default:
throw new Exception("Bad compare result");
}
}
if (IsResultFilter(DiffResult.Deleted))
{
while (curA < maxA)
{
// trailing deleted entries
entries.Add(new Entry(DiffResult.Deleted, 0, curA));
++curA;
}
}
else
{
UnityEngine.Debug.Log("ignored entry");
}
if (IsResultFilter(DiffResult.New))
{
while (curB < maxB)
{
// trailing new entries
entries.Add(new Entry(DiffResult.New, 1, curB));
++curB;
}
}
else
{
UnityEngine.Debug.Log("ignored entry");
}
return(entries);
}