public bool TryGetChild(out JsonObject value)
{
DbRow record = _database.Get();
if (record.SizeOrLength == 0)
{
value = default;
return(false);
}
if (record.JsonType != JsonValueType.Object)
{
JsonThrowHelper.ThrowInvalidOperationException();
}
record = _database.Get(DbRow.Size);
int newStart = DbRow.Size + DbRow.Size;
int newEnd = newStart + DbRow.Size;
record = _database.Get(newStart);
if (!record.IsSimpleValue)
{
newEnd = newEnd + DbRow.Size * record.SizeOrLength;
}
CustomDb copy = _database;
copy.Span = _database.Slice(newStart, newEnd - newStart);
value = new JsonObject(_jsonData, copy);
return(true);
}
public void Remove(JsonObject obj)
{
ReadOnlySpan <byte> values = obj._jsonData;
CustomDb db = obj._database;
DbRow objRecord = db.Get();
int reduce = objRecord.SizeOrLength;
int idx = _database.Span.IndexOf(db.Span);
int sliceVal = idx + db.Length;
if (idx >= DbRow.Size)
{
reduce++;
reduce++;
idx -= DbRow.Size;
}
Span <byte> temp = _database.Slice(0, idx);
for (int i = 0; i < temp.Length; i += DbRow.Size)
{
DbRow record = MemoryMarshal.Read <DbRow>(temp.Slice(i));
if (!record.IsSimpleValue)
{
DbRow myObj = _database.Get(i + record.SizeOrLength * DbRow.Size);
if (myObj.Location > objRecord.Location)
{
int sizeOrlength = record.SizeOrLength - reduce;
int numberOfRows = sizeOrlength == 0 ? 1 : sizeOrlength; //TODO: fix up for arrays
bool hasChildren = record.HasChildren; //TODO: Re-calculate HasChildren since it can become false
DbRow fixup = new DbRow(record.JsonType, record.Location, hasChildren, sizeOrlength, numberOfRows);
MemoryMarshal.Write(temp.Slice(i), ref fixup);
}
}
}
_database.Slice(sliceVal).CopyTo(_database.Slice(idx));
_database.Span = _database.Slice(0, _database.Length - db.Length - DbRow.Size);
}
