BOOL AddMQ2Type(MQ2Type &Type)
{
if (FindMQ2DataType(Type.GetName()))
return false;
unsigned long N = MQ2DataTypes.GetUnused();
MQ2DataTypes[N] = &Type;
MQ2DataTypeMap[Type.GetName()] = N + 1;
return true;
}
BOOL RemoveMQ2Type(MQ2Type &Type)
{
unsigned long N = MQ2DataTypeMap[Type.GetName()];
if (!N)
return 0;
N--;
if (MQ2Type *pType = MQ2DataTypes[N])
{
MQ2DataTypes[N] = 0;
return false;
}
MQ2DataTypeMap[Type.GetName()] = 0;
return true;
}
BOOL MQ2Internal::AddMQ2Type(MQ2Type &Type)
{
lockit lk(ghVariableLock);
// returns pair with iterator pointing to the constructed
// element, and a bool indicating if it was actually inserted.
// this will not replace existing elements.
auto result = MQ2DataTypeMap.emplace(Type.GetName(), &Type);
return result.second;
}
BOOL MQ2Internal::RemoveMQ2Type(MQ2Type &Type)
{
lockit lk(ghVariableLock);
// use iterator to erase. allows us to check for existence
// and erase it without any waste
PCHAR thetypename = Type.GetName();
if (!thetypename)
return false;
auto iter = MQ2DataTypeMap.find(thetypename);
if (iter == MQ2DataTypeMap.end())
return false;
// The type existed. Erase it.
MQ2DataTypeMap.erase(iter);
return true;
}