public byte[] Get(int index)
{
AssertElementIndexIsValid(index);
if (index >= GetNextIndex())
{
throw new InvalidElementIndexException("index is outside the file");
}
int byteIndex = GetByteIndex(index);
return(_fileWithHeader.GetAmount(byteIndex, GetElementSize()));
}
private static void GetPutArrayTestAssert(FileWithHeader fwh, int index, byte[] data)
{
int nextIndexBefore = fwh.GetNextIndex();
fwh.Put(index, data);
if (index + data.Length >= nextIndexBefore)
{
Assert.AreEqual(index + data.Length, fwh.GetNextIndex());
}
byte[] actual = fwh.GetAmount(index, data.Length);
TestHelper.AssertByteArraysAreSame(data, actual);
}
private PersistentHeapUsedSpace GetSpaceAt(int token)
{
int sizeIndex = token - PersistentHeapSpace.GetUserSizeSize();
byte[] sizeBytes = _file.GetAmount(sizeIndex, PersistentHeapSpace.GetUserSizeSize());
int userSize = PersistentHeapSpace.GetUserSize(sizeBytes);
int fullLength = userSize + PersistentHeapSpace.GetUserSizeSize();
int endIndex = sizeIndex + fullLength - 1;
byte[] data = _file.GetRange(sizeIndex + PersistentHeapSpace.GetUserSizeSize(), endIndex);
//let PersistentHeapUsedSpace be default
PersistentHeapUsedSpace usedSpace = new PersistentHeapUsedSpace(sizeIndex, endIndex, data);
return(usedSpace);
}