| public GetEnumerator ( ) : OrderedDictionary.Enumerator | ||
| return | OrderedDictionary.Enumerator | |
/// <summary>
/// Internal version of <see cref="Chunk"/> with deep-copy option.
/// </summary>
internal static PhpArray ChunkInternal(PhpArray array, int size, bool preserveKeys, bool deepCopy)
{
if (array == null)
{
//PhpException.ArgumentNull("array");
//return null;
throw new ArgumentNullException(nameof(array));
}
if (size <= 0)
{
//PhpException.InvalidArgument("array", LibResources.GetString("arg:negative_or_zero"));
//return null;
throw new ArgumentException(nameof(size));
}
// nothing to do:
if (array.Count == 0)
return new PhpArray();
// number of chunks:
int count = (array.Count - 1) / size + 1; // = ceil(Count/size):
PhpArray chunk;
PhpArray result = new PhpArray(count, 0);
IEnumerator<KeyValuePair<IntStringKey, PhpValue>> iterator = array.GetEnumerator();
// if deep-copies are required, wrapp iterator by enumerator making deep copies:
if (deepCopy)
iterator = PhpVariable.EnumerateDeepCopies(iterator);
iterator.MoveNext();
// all chunks except for the last one:
for (int i = 0; i < count - 1; i++)
{
chunk = new PhpArray(size, 0);
if (preserveKeys)
{
for (int j = 0; j < size; j++, iterator.MoveNext())
chunk.Add(iterator.Current.Key, iterator.Current.Value);
}
else
{
for (int j = 0; j < size; j++, iterator.MoveNext())
chunk.Add(iterator.Current.Value);
}
result.Add(chunk);
}
// the last chunk:
chunk = new PhpArray((size <= array.Count) ? size : array.Count, 0);
if (preserveKeys)
{
do { chunk.Add(iterator.Current.Key, iterator.Current.Value); } while (iterator.MoveNext());
}
else
{
do { chunk.Add(iterator.Current.Value); } while (iterator.MoveNext());
}
result.Add(chunk);
// no deep copy is needed since it has already been done on chunks:
return result;
}