internal ResolvedAttributeSet Merge(ResolvedAttribute toMerge, CdmAttributeContext attCtx = null)
{
ResolvedAttributeSet rasResult = this;
if (toMerge != null)
{
if (rasResult.ResolvedName2resolvedAttribute.ContainsKey(toMerge.ResolvedName))
{
ResolvedAttribute existing = rasResult.ResolvedName2resolvedAttribute[toMerge.ResolvedName];
if (this.RefCnt > 1 && existing.Target != toMerge.Target)
{
rasResult = rasResult.Copy(); // copy on write
existing = rasResult.ResolvedName2resolvedAttribute[toMerge.ResolvedName];
}
existing.Target = toMerge.Target; // replace with newest version
existing.Arc = toMerge.Arc;
ResolvedTraitSet rtsMerge = existing.ResolvedTraits.MergeSet(toMerge.ResolvedTraits); // newest one may replace
if (rtsMerge != existing.ResolvedTraits)
{
rasResult = rasResult.Copy(); // copy on write
existing = rasResult.ResolvedName2resolvedAttribute[toMerge.ResolvedName];
existing.ResolvedTraits = rtsMerge;
}
}
else
{
if (this.RefCnt > 1)
{
rasResult = rasResult.Copy(); // copy on write
}
if (rasResult == null)
{
rasResult = this;
}
rasResult.ResolvedName2resolvedAttribute.Add(toMerge.ResolvedName, toMerge);
// don't use the attCtx on the actual attribute, that's only for doing appliers
if (attCtx != null)
{
rasResult.CacheAttributeContext(attCtx, toMerge);
}
//toMerge.InsertOrder = rasResult.Set.Count;
rasResult.Set.Add(toMerge);
}
this.BaseTrait2Attributes = null;
}
return(rasResult);
}
internal ResolvedAttributeSet Merge(ResolvedAttribute toMerge, CdmAttributeContext attCtx = null)
{
ResolvedAttributeSet rasResult = this;
if (toMerge != null)
{
// if there is already a resolve attribute present, remove it before adding the new attribute
if (rasResult.ResolvedName2resolvedAttribute.ContainsKey(toMerge.ResolvedName))
{
ResolvedAttribute existing = rasResult.ResolvedName2resolvedAttribute[toMerge.ResolvedName];
if (this.RefCnt > 1 && existing.Target != toMerge.Target)
{
rasResult = rasResult.Copy(); // copy on write
existing = rasResult.ResolvedName2resolvedAttribute[toMerge.ResolvedName];
}
else
{
rasResult = this;
}
if (existing.Target is CdmAttribute)
{
rasResult.ResolvedAttributeCount -= existing.Target.AttributeCount;
}
else if (existing.Target is ResolvedAttributeSet)
{
rasResult.ResolvedAttributeCount -= existing.Target.ResolvedAttributeCount;
}
if (toMerge.Target is CdmAttribute)
{
rasResult.ResolvedAttributeCount += toMerge.Target.AttributeCount;
}
else if (toMerge.Target is ResolvedAttributeSet)
{
rasResult.ResolvedAttributeCount += toMerge.Target.ResolvedAttributeCount;
}
existing.Target = toMerge.Target; // replace with newest version
existing.Arc = toMerge.Arc;
// Replace old context mappings with mappings to new attribute
rasResult.RemoveCachedAttributeContext(existing.AttCtx);
rasResult.CacheAttributeContext(attCtx, existing);
ResolvedTraitSet rtsMerge = existing.ResolvedTraits.MergeSet(toMerge.ResolvedTraits); // newest one may replace
if (rtsMerge != existing.ResolvedTraits)
{
rasResult = rasResult.Copy(); // copy on write
existing = rasResult.ResolvedName2resolvedAttribute[toMerge.ResolvedName];
existing.ResolvedTraits = rtsMerge;
}
}
else
{
if (this.RefCnt > 1)
{
rasResult = rasResult.Copy(); // copy on write
}
if (rasResult == null)
{
rasResult = this;
}
rasResult.ResolvedName2resolvedAttribute.Add(toMerge.ResolvedName, toMerge);
// don't use the attCtx on the actual attribute, that's only for doing appliers
if (attCtx != null)
{
rasResult.CacheAttributeContext(attCtx, toMerge);
}
//toMerge.InsertOrder = rasResult.Set.Count;
rasResult.Set.Add(toMerge);
rasResult.ResolvedAttributeCount += toMerge.ResolvedAttributeCount;
}
this.BaseTrait2Attributes = null;
}
return(rasResult);
}
