Scope& Scope::operator=(const Scope& rhs)
{
if (this != &rhs)
{
Orphan();
Clear();
mTable.Resize(rhs.mTable.Size()); // this should be OK to call since the hash map is empty after Clear()
for (std::uint32_t i = 0; i < rhs.mOrder.Size(); ++i)
{
if (rhs.mOrder[i]->second.GetType() != Datum::Table)
{
Datum& d = Append(rhs.mOrder[i]->first);
d = rhs.mOrder[i]->second;
}
else
{
std::uint32_t datumSize = rhs.mOrder[i]->second.Size();
for (std::uint32_t datumCounter = 0; datumCounter < datumSize; ++datumCounter)
{
Scope& s = AppendScope(rhs.mOrder[i]->first); // s is a reference to a scope
Datum* scopeDatum = Find(rhs.mOrder[i]->first); // scopeDatum contains s
Scope* scopePointer = rhs.mOrder[i]->second.GetTable(datumCounter); // scope pointer is a pointer to the corresponding scope in scopeDatum
if (scopePointer == nullptr)
scopeDatum->Set((Scope*)nullptr, datumCounter); // if the scope in the rhs datum is null, this scope should also be null
else
s = *scopePointer; // recursive call
}
}
}
}
return *this;
}
Scope& Attributed::AppendAuxiliaryScope(const std::string& name)
{
if (IsPrescribedAttribute(name))
throw std::exception("Attribute already exists");
return AppendScope(name);
}
