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); }