public override CacheEntry Get(object[] args)
{
string hash = GetHash(args);
Debug.WriteLine($"Getting hash: {hash}");
if (!LastIndexCache.ContainsKey(hash))
{
return(null);
}
int lastIndex = LastIndexCache[hash];
var entry = ValueLists[lastIndex];
if (lastIndex > 0)
{
MoveToFrontOfCache(entry);
}
else
{
Debug.WriteLine($"Hash was already the most recently used. Will not move: {entry.Hash}");
Debug.WriteLine(
$"Current state:{Environment.NewLine}" +
$"Indices: {JsonConvert.SerializeObject(LastIndexCache)}{Environment.NewLine}" +
$"Cache: {JsonConvert.SerializeObject(ValueLists)}"
);
}
Debug.WriteLine($"Returning existing entry: {entry.Hash}");
return(entry);
}
private void RemoveLeastRecentlyUsedEntry()
{
var leastRecentlyUsedEntry = ValueLists[MaxSize - 1];
Debug.WriteLine($"Removing least recently used entry: {leastRecentlyUsedEntry.Hash}");
ValueLists.RemoveAt(MaxSize - 1);
LastIndexCache.Remove(leastRecentlyUsedEntry.Hash);
}
public override bool Add(object[] args, object result)
{
string hash = GetHash(args);
if (LastIndexCache.ContainsKey(hash))
{
return(false);
}
Debug.WriteLine($"Adding args to front of cache: {JsonConvert.SerializeObject(args)}: {hash}");
AddToFrontOfCache(hash, result);
return(true);
}
protected void AddToFrontOfCache(string hash, object value)
{
var newEntry = new CacheEntry()
{
Hash = hash,
Value = value
};
Debug.WriteLine($"Adding new entry to front of cache: {hash}");
LastIndexCache.Add(hash, 0);
ValueLists.Insert(0, newEntry);
UpdateIndices(hash);
}
public override CacheEntry Get(object[] args)
{
string hash = GetHash(args);
Debug.WriteLine($"Getting hash: {hash}");
if (!LastIndexCache.ContainsKey(hash))
{
return(null);
}
int lastIndex = LastIndexCache[hash];
var entry = ValueLists[lastIndex];
Debug.WriteLine($"Returning existing entry: {entry.Hash}");
return(entry);
}
public override bool Add(object[] args, object result)
{
string hash = GetHash(args);
if (LastIndexCache.ContainsKey(hash))
{
return(false);
}
if (ValueLists.Count >= MaxSize)
{
RemoveLeastRecentlyUsedEntry();
}
Debug.WriteLine($"Adding args to front of cache: {JsonConvert.SerializeObject(args)}: {hash}");
AddToFrontOfCache(hash, result);
return(true);
}
public bool IsCached(object[] args)
{
string hash = GetHash(args);
return(LastIndexCache.ContainsKey(hash));
}
