public void ResolveExtend()
{
ResolveExtendData();
// Ensure we process derivations in right order (topologic) so no lingering extend stays:
var derivations = TopologicalSort(ParentToChildren.Values.ToList());
// Apply Derivations:
foreach (var derivation in derivations)
{
if (derivation.ParentRule == null)
{
Debug.LogWarning("Cannot resolve parent rule: " + derivation.ParentSelectorName);
continue;
}
var extendedRules = derivation.ParentRule.ResolveExtendedRules(this);
foreach (var childrenRule in derivation.ChildrenRules)
{
foreach (var replacementRule in extendedRules)
{
var childrenReplacementName = replacementRule.SelectorName.Replace(derivation.ParentSelectorName, childrenRule.SelectorName);
if (childrenRule.SelectorName == childrenReplacementName)
{
childrenRule.Properties.Remove(ConverterUtils.k_Extend);
Extend(replacementRule, childrenRule);
}
else
{
Rule pseudoChildrenRule;
if (!Rules.TryGetValue(childrenReplacementName, out pseudoChildrenRule))
{
var childrenSelector = ConverterUtils.CreateSelectorFromSource(replacementRule.Selector, childrenRule.SelectorName);
pseudoChildrenRule = new Rule(childrenReplacementName, childrenSelector, -1);
Rules.Add(childrenReplacementName, pseudoChildrenRule);
RecordIfPseudoStateRule(pseudoChildrenRule);
}
Extend(replacementRule, pseudoChildrenRule);
}
}
}
}
}