nautilus_model/orderbook/aggregation.rs
1// -------------------------------------------------------------------------------------------------
2// Copyright (C) 2015-2025 Nautech Systems Pty Ltd. All rights reserved.
3// https://nautechsystems.io
4//
5// Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6// You may not use this file except in compliance with the License.
7// You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16//! Functions related to normalizing and processing top-of-book events.
17
18use crate::{
19 data::order::BookOrder,
20 enums::{BookType, RecordFlag},
21};
22
23pub(crate) fn pre_process_order(book_type: BookType, mut order: BookOrder, flags: u8) -> BookOrder {
24 match book_type {
25 BookType::L1_MBP => order.order_id = order.side as u64,
26 BookType::L2_MBP => order.order_id = order.price.raw as u64,
27 BookType::L3_MBO => {
28 if flags == 0 {
29 } else if RecordFlag::F_TOB.matches(flags) {
30 order.order_id = order.side as u64;
31 } else if RecordFlag::F_MBP.matches(flags) {
32 order.order_id = order.price.raw as u64;
33 }
34 }
35 };
36 order
37}