private void ConstructInstance(PartCompositionId partId)
{
if (CanPartBeInstantiated(partId))
{
var satisfiedPartImports = SatisfiedPartImports(partId);
foreach (var importPair in satisfiedPartImports)
{
var exportingPartInfo = m_Parts[importPair.Item2];
if (exportingPartInfo.Instance == null)
{
ConstructInstance(importPair.Item2);
}
}
var partImports = ImportInformationForPart(satisfiedPartImports);
var info = m_Parts[partId];
if (info.Instance != null)
{
var updatedInstances = Instances.UpdateIfRequired(info.Instance, partImports);
foreach (var instance in updatedInstances)
{
if (instance.Change == InstanceChange.Removed)
{
var updatedInfo = m_Parts.FirstOrDefault(p => instance.Instance.Equals(p.Value.Instance));
updatedInfo.Value.Instance = null;
}
}
}
else
{
info.Instance = Instances.Construct(
info.Definition,
partImports);
}
}
}