public static bool IsParentOf(this ModelItem item, ModelItem child)
{
if (null == item)
{
throw FxTrace.Exception.ArgumentNull("item");
}
if (null == child)
{
throw FxTrace.Exception.ArgumentNull("child");
}
bool isParent = false;
child.GetParentEnumerator(p => { isParent = ModelItem.Equals(p, item); return(!isParent); }).LastOrDefault();
return(isParent);
}
internal static ModelItem FindCommonVariableScope(ModelItem scope1, ModelItem scope2)
{
if (null == scope1 || null == scope2)
{
throw FxTrace.Exception.AsError(new ArgumentNullException(null == scope1 ? "scope1" : "scope2"));
}
var scope1List = scope1.GetParentEnumerator().Where(p => null != VariableHelper.GetVariableCollection(p)).ToList();
var scope2List = scope2.GetParentEnumerator().Where(p => null != VariableHelper.GetVariableCollection(p)).ToList();
if (null != VariableHelper.GetVariableCollection(scope1))
{
scope1List.Insert(0, scope1);
}
if (null != VariableHelper.GetVariableCollection(scope2))
{
scope2List.Insert(0, scope2);
}
if (scope1 == scope2)
{
return scope1List.FirstOrDefault();
}
return scope1List.Intersect(scope2List).FirstOrDefault();
}
internal static ModelItem FindRootVariableScope(ModelItem element)
{
if (null == element)
{
throw FxTrace.Exception.ArgumentNull("element");
}
ModelItem result = element.GetParentEnumerator().Where(p => null != VariableHelper.GetVariableCollection(p)).LastOrDefault();
return result;
}
