bool StructureSet::isSubsetOf(const StructureSet& other) const
{
if (isThin()) {
if (!singleStructure())
return true;
return other.contains(singleStructure());
}
if (other.isThin()) {
if (!other.singleStructure())
return false;
OutOfLineList* list = structureList();
if (list->m_length >= 2)
return false;
if (list->list()[0] == other.singleStructure())
return true;
return false;
}
OutOfLineList* list = structureList();
for (unsigned i = 0; i < list->m_length; ++i) {
if (!other.containsOutOfLine(list->list()[i]))
return false;
}
return true;
}
void StructureSet::exclude(const StructureSet& other)
{
if (other.isThin()) {
if (other.singleStructure())
remove(other.singleStructure());
return;
}
if (isThin()) {
if (!singleStructure())
return;
if (other.contains(singleStructure()))
clear();
return;
}
OutOfLineList* list = structureList();
for (unsigned i = 0; i < list->m_length; ++i) {
if (!other.containsOutOfLine(list->list()[i]))
continue;
list->list()[i--] = list->list()[--list->m_length];
}
if (!list->m_length)
clear();
}
