private void UpdateHelperFunctions(Type t, object key)
{
if (_keyType == null)
{
// first time through, get the sites for this specific type...
if (t == typeof(int))
{
_hashFunc = _intHash;
_eqFunc = _intEquals;
}
else if (t == typeof(string))
{
_hashFunc = _primitiveHash;
_eqFunc = _stringEquals;
}
else if (t == typeof(double))
{
_hashFunc = _doubleHash;
_eqFunc = _doubleEquals;
}
else if (t == typeof(PythonTuple))
{
_hashFunc = _tupleHash;
_eqFunc = _tupleEquals;
}
else if (t == typeof(Type).GetType()) // this odd check checks for RuntimeType.
{
_hashFunc = _primitiveHash;
_eqFunc = _objectEq;
}
else
{
// random type, but still homogeneous... get a shared site for this type.
PythonType pt = DynamicHelpers.GetPythonType(key);
var hashSite = PythonContext.GetHashSite(pt);
var equalSite = DefaultContext.DefaultPythonContext.GetEqualSite(pt);
AssignSiteDelegates(hashSite, equalSite);
}
_keyType = t;
}
else if (_keyType != HeterogeneousType)
{
// 2nd time through, we're adding a new type so we have mutliple types now,
// make a new site for this storage
SetHeterogeneousSites();
// we need to clone the buckets so any lock-free readers will only see
// the old buckets which are homogeneous
_buckets = (Bucket[])_buckets.Clone();
}
// else we have already created a new site this dictionary
}
