////////////////////////////////////////////////////////////////////////////////////////////////////
// traits that change attributes
////////////////////////////////////////////////////////////////////////////////////////////////////
internal ResolvedAttributeSet ApplyTraits(ResolvedTraitSet traits, ResolveOptions resOpt, CdmAttributeResolutionGuidance resGuide, List <AttributeResolutionApplier> actions)
{
ResolvedAttributeSet rasResult = this;
ResolvedAttributeSet rasApplied;
if (this.RefCnt > 1 && rasResult.CopyNeeded(traits, resOpt, resGuide, actions))
{
rasResult = rasResult.Copy();
}
rasApplied = rasResult.Apply(traits, resOpt, resGuide, actions);
// now we are that
rasResult.ResolvedName2resolvedAttribute = rasApplied.ResolvedName2resolvedAttribute;
rasResult.BaseTrait2Attributes = null;
rasResult.Set = rasApplied.Set;
return(rasResult);
}
ResolvedAttributeSet Apply(ResolvedTraitSet traits, CdmAttributeResolutionGuidance resGuide, List <AttributeResolutionApplier> actions)
{
if (traits == null && actions.Count == 0)
{
// nothing can change
return(this);
}
// for every attribute in the set run any attribute appliers
ResolvedAttributeSet appliedAttSet = new ResolvedAttributeSet();
int l = this.Set.Count;
appliedAttSet.AttributeContext = this.AttributeContext;
// check to see if we need to make a copy of the attributes
// do this when building an attribute context and when we will modify the attributes (beyond traits)
// see if any of the appliers want to modify
bool makingCopy = false;
if (l > 0 && appliedAttSet.AttributeContext != null && actions != null && actions.Count > 0)
{
ResolvedAttribute resAttTest = this.Set[0];
foreach (AttributeResolutionApplier traitAction in actions)
{
ApplierContext ctx = new ApplierContext {
ResOpt = traits.ResOpt, ResAttSource = resAttTest, ResGuide = resGuide
};
if (traitAction.WillAttributeModify(ctx) == true)
{
makingCopy = true;
break;
}
}
}
if (makingCopy)
{
// fake up a generation round for these copies that are about to happen
AttributeContextParameters acp = new AttributeContextParameters
{
under = appliedAttSet.AttributeContext,
type = Enums.CdmAttributeContextType.GeneratedSet,
Name = "_generatedAttributeSet"
};
appliedAttSet.AttributeContext = CdmAttributeContext.CreateChildUnder(traits.ResOpt, acp);
acp = new AttributeContextParameters
{
under = appliedAttSet.AttributeContext,
type = Enums.CdmAttributeContextType.GeneratedRound,
Name = "_generatedAttributeRound0"
};
appliedAttSet.AttributeContext = CdmAttributeContext.CreateChildUnder(traits.ResOpt, acp);
}
for (int i = 0; i < l; i++)
{
ResolvedAttribute resAtt = this.Set[i];
ResolvedAttributeSet subSet = resAtt.Target as ResolvedAttributeSet;
CdmAttributeContext attCtxToMerge = null;
if (subSet?.Set != null)
{
if (makingCopy)
{
resAtt = resAtt.Copy();
}
// the set contains another set. process those
resAtt.Target = subSet.Apply(traits, resGuide, actions);
}
else
{
ResolvedTraitSet rtsMerge = resAtt.ResolvedTraits.MergeSet(traits);
resAtt.ResolvedTraits = rtsMerge;
if (actions != null)
{
foreach (AttributeResolutionApplier traitAction in actions)
{
ApplierContext ctx = new ApplierContext {
ResOpt = traits.ResOpt, ResAttSource = resAtt, ResGuide = resGuide
};
if (traitAction.WillAttributeModify(ctx) == true)
{
// make a context for this new copy
if (makingCopy)
{
AttributeContextParameters acp = new AttributeContextParameters
{
under = appliedAttSet.AttributeContext,
type = Enums.CdmAttributeContextType.AttributeDefinition,
Name = resAtt.ResolvedName,
Regarding = resAtt.Target
};
ctx.AttCtx = CdmAttributeContext.CreateChildUnder(traits.ResOpt, acp);
attCtxToMerge = ctx.AttCtx as CdmAttributeContext;
}
// make a copy of the resolved att
if (makingCopy)
{
resAtt = resAtt.Copy();
}
ctx.ResAttSource = resAtt;
// modify it
traitAction.DoAttributeModify(ctx);
}
}
}
}
appliedAttSet.Merge(resAtt, attCtxToMerge);
}
appliedAttSet.AttributeContext = this.AttributeContext;
if (!makingCopy)
{
// didn't copy the attributes or make any new context, so just take the old ones
appliedAttSet.Ra2attCtxSet = this.Ra2attCtxSet;
appliedAttSet.AttCtx2ra = this.AttCtx2ra;
}
return(appliedAttSet);
}
