public ArrayItem Shift()
{
if (_data.Count == 0)
{
return(null);
}
ArrayItem first = _data [0];
var old_remaining = _data.Skip(1).ToArray();
Clear();
foreach (var old_item in old_remaining)
{
ArrayKey key = old_item.Key;
FinalExpression value = old_item.Value;
if (key.IsDigitsOnly())
{
key = new ArrayKey((_highest_integer_key + 1).ToString());
}
_data.Add(new ArrayItem(key, value));
_keys.Add(key);
}
return(first);
}
public void Set(ArrayItem item)
{
if (item == null)
{
return;
}
ArrayKey key = item.Key;
if (key.Value.Length == 0)
{
key = new ArrayKey((_highest_integer_key + 1).ToString());
item = new ArrayItem(key, item.Value);
}
if (TryGetValue(key, out ArrayItem item_old))
{
_data.Remove(item_old);
}
_data.Add(item);
_keys.Add(key);
Log.Debug($"set array value: arr = {_id}, key = {item.Key}, value = {item.Value}");
if (key.IsDigitsOnly())
{
long k = key.Value.ToLong();
_highest_integer_key = k > _highest_integer_key ? k : _highest_integer_key;
}
}
public FinalExpression this [ArrayKey key]
{
get
{
return(TryGetValue(key, out var item) ? item.Value : new NullExpression());
}
set
{
Set(new ArrayItem(key, value));
}
}
public bool TryGetValue(ArrayKey key, out ArrayItem res)
{
if (_keys.Contains(key))
{
foreach (ArrayItem value in _data)
{
if (value.Key.Equals(key))
{
Log.Debug($"get array value: arr = {_id}, key = {key}, value = {value}");
res = value;
return(true);
}
}
}
res = null;
return(false);
}
public bool Contains(ArrayKey key)
{
return(_keys.Contains(key));
}
public ArrayItem(ArrayKey key, FinalExpression value)
{
Key = key;
Value = value;
}