nautilus_model/ffi/identifiers/
trade_id.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
16use std::{
17    collections::hash_map::DefaultHasher,
18    ffi::{CStr, CString, c_char},
19    hash::{Hash, Hasher},
20};
21
22use crate::identifiers::trade_id::TradeId;
23
24/// Returns a Nautilus identifier from a C string pointer.
25///
26/// # Safety
27///
28/// - Assumes `ptr` is a valid C string pointer.
29#[unsafe(no_mangle)]
30pub unsafe extern "C" fn trade_id_new(ptr: *const c_char) -> TradeId {
31    let value = unsafe { CStr::from_ptr(ptr).to_owned() };
32    TradeId::from(value)
33}
34
35#[unsafe(no_mangle)]
36pub extern "C" fn trade_id_hash(id: &TradeId) -> u64 {
37    let mut hasher = DefaultHasher::new();
38    id.value.hash(&mut hasher);
39    hasher.finish()
40}
41
42#[unsafe(no_mangle)]
43pub extern "C" fn trade_id_to_cstr(trade_id: &TradeId) -> *const c_char {
44    trade_id.as_cstr().as_ptr()
45}
46
47impl From<CString> for TradeId {
48    fn from(value: CString) -> Self {
49        TradeId::from_bytes(value.as_bytes_with_nul()).unwrap()
50    }
51}
nautilus_model/ffi/identifiers/trade_id.rs

nautilus_model/ffi/identifiers/
trade_id.rs
