private static Array CreateArrayDeepCopy(CopyingState state, Array array)
{
Array result = (Array)array.Clone();
int[] indices = new int[result.Rank];
for (int rank = 0; rank < indices.Length; ++rank)
{
indices[rank] = result.GetLowerBound(rank);
}
MakeArrayRowDeepCopy(state, result, indices, 0);
return(result);
}
private static object CreateDeepCopyInternal(CopyingState state, object o)
{
object exist_object;
if (state.TryGetValue(o, out exist_object))
{
return(exist_object);
}
if (o is Array)
{
object array_copy = CreateArrayDeepCopy(state, (Array)o);
state[o] = array_copy;
return(array_copy);
}
else if (o is string)
{
object string_copy = string.Copy((string)o);
state[o] = string_copy;
return(string_copy);
}
else
{
Type o_type = o.GetType();
if (o_type.IsPrimitive)
{
return(o);
}
object copy = memberwise_clone.Invoke(o, null);
state[o] = copy;
foreach (FieldInfo f in o_type.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
{
object original = f.GetValue(o);
if (!object.ReferenceEquals(original, null))
{
f.SetValue(copy, CreateDeepCopyInternal(state, original));
}
}
return(copy);
}
}
private static void MakeArrayRowDeepCopy(CopyingState state, Array array, int[] indices, int rank)
{
int next_rank = rank + 1;
int upper_bound = array.GetUpperBound(rank);
while (indices[rank] <= upper_bound)
{
object value = array.GetValue(indices);
if (!object.ReferenceEquals(value, null))
{
array.SetValue(CreateDeepCopyInternal(state, value), indices);
}
if (next_rank < array.Rank)
{
MakeArrayRowDeepCopy(state, array, indices, next_rank);
}
indices[rank] += 1;
}
indices[rank] = array.GetLowerBound(rank);
}