private void FlushRangeIfNecessary(ref CopyRange currentRange)
{
if (currentRange.Size > 0)
{
ranges.Add(currentRange);
currentRange.SourceStart += currentRange.Size;
currentRange.DestStart = -1;
currentRange.Size = 0;
}
}
protected override void Execute(CodeActivityContext context)
{
try
{
base.LoadVariables(context);
strCopyRange = CopyRange.Get(context);
this.CopyXlData();
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// Compute copy operations. Assumes destination layout is sequential.
/// </summary>
/// <param name="dest"></param>
/// <param name="source"></param>
/// <param name="keyRoot"></param>
public void Compile(ParameterCollection dest, ParameterCollection source, string keyRoot)
{
ranges = new List <CopyRange>();
destination = dest;
var sourceLayout = new ParameterCollectionLayout();
// Helper structures to try to keep range contiguous and have as few copy operations as possible (note: there can be some padding)
var currentDataRange = new CopyRange {
IsData = true, DestStart = -1
};
var currentResourceRange = new CopyRange {
IsResource = true, DestStart = -1
};
// Iterate over each variable in dest, and if they match keyRoot, create the equivalent layout in source
foreach (var parameterKeyInfo in dest.Layout.LayoutParameterKeyInfos)
{
bool isResource = parameterKeyInfo.BindingSlot != -1;
bool isData = parameterKeyInfo.Offset != -1;
if (parameterKeyInfo.Key.Name.EndsWith(keyRoot))
{
// That's a match
var subkeyName = parameterKeyInfo.Key.Name.Substring(0, parameterKeyInfo.Key.Name.Length - keyRoot.Length);
var subkey = ParameterKeys.FindByName(subkeyName);
if (isData)
{
// First time since range reset, let's setup destination offset
if (currentDataRange.DestStart == -1)
{
currentDataRange.DestStart = parameterKeyInfo.Offset;
}
// Might be some empty space (padding)
currentDataRange.Size = parameterKeyInfo.Offset - currentDataRange.DestStart;
sourceLayout.LayoutParameterKeyInfos.Add(new ParameterKeyInfo(subkey, currentDataRange.SourceStart + currentDataRange.Size, parameterKeyInfo.Count));
var elementCount = parameterKeyInfo.Count;
var elementSize = parameterKeyInfo.Key.Size;
var size = (elementSize + 15) / 16 * 16 * (elementCount - 1) + elementSize;
currentDataRange.Size += size;
}
else if (isResource)
{
// First time since range reset, let's setup destination offset
if (currentResourceRange.DestStart == -1)
{
currentResourceRange.DestStart = parameterKeyInfo.BindingSlot;
}
// Might be some empty space (padding) (probably unlikely for resources...)
currentResourceRange.Size = parameterKeyInfo.BindingSlot - currentResourceRange.DestStart;
sourceLayout.LayoutParameterKeyInfos.Add(new ParameterKeyInfo(subkey, currentResourceRange.SourceStart + currentResourceRange.Size));
currentResourceRange.Size += parameterKeyInfo.Count;
}
}
else
{
// Found one item not part of the range, let's finish it
if (isData)
{
FlushRangeIfNecessary(ref currentDataRange);
}
else if (isResource)
{
FlushRangeIfNecessary(ref currentResourceRange);
}
}
}
// Finish ranges
FlushRangeIfNecessary(ref currentDataRange);
FlushRangeIfNecessary(ref currentResourceRange);
// Update sizes
sourceLayout.BufferSize = currentDataRange.SourceStart;
sourceLayout.ResourceCount = currentResourceRange.SourceStart;
source.UpdateLayout(sourceLayout);
}
