// CopyTo copies a collection into an Array, starting at a particular
// index into the array.
//
/// <include file='doc\Queue.uex' path='docs/doc[@for="Queue.CopyTo"]/*' />
public virtual void CopyTo(T[] array, int arrayIndex)
{
if (array == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.array);
}
if (arrayIndex < 0 || arrayIndex > array.Length)
{
ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument.arrayIndex, ExceptionResource.ArgumentOutOfRange_Index);
}
int arrayLen = array.Length;
if (arrayLen - arrayIndex < _size)
{
ThrowHelper.ThrowArgumentException(ExceptionResource.Argument_InvalidOffLen);
}
int numToCopy = (arrayLen - arrayIndex < _size) ? (arrayLen - arrayIndex) : _size;
if (numToCopy == 0)
{
return;
}
int firstPart = (_array.Length - _head < numToCopy) ? _array.Length - _head : numToCopy;
_array.CopyTo(array, arrayIndex, _head, firstPart);
numToCopy -= firstPart;
if (numToCopy > 0)
{
_array.CopyTo(array, arrayIndex + _array.Length - _head, 0, numToCopy);
}
}
void System.Collections.ICollection.CopyTo(Array array, int arrayIndex)
{
if ((array != null) && (array.Rank != 1))
{
ThrowHelper.ThrowArgumentException(ExceptionResource.Arg_RankMultiDimNotSupported);
}
#if DEBUG
Contract.EndContractBlock();
#endif
try
{
_items.CopyTo(array, arrayIndex, 0, _size);
}
catch (ArrayTypeMismatchException)
{
ThrowHelper.ThrowArgumentException(ExceptionResource.Argument_InvalidArrayType);
}
}
internal byte[] InternalGetBuffer()
{
byte[] bytes = new byte[_length];
_buffer.CopyTo(bytes, 0, 0, _length);
return(bytes);
}
