nautilus_model/ffi/identifiers/
trade_id.rs

1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2026 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::{CString, c_char},
19    hash::{Hash, Hasher},
20};
21
22use nautilus_core::StackStr;
23
24use crate::identifiers::TradeId;
25
26/// Returns a Nautilus identifier from a C string pointer.
27///
28/// # Safety
29///
30/// Assumes `ptr` is a valid C string pointer.
31#[unsafe(no_mangle)]
32pub unsafe extern "C" fn trade_id_new(ptr: *const c_char) -> TradeId {
33    TradeId::new(unsafe { StackStr::from_c_ptr(ptr) }.as_str())
34}
35
36#[unsafe(no_mangle)]
37pub extern "C" fn trade_id_hash(id: &TradeId) -> u64 {
38    let mut hasher = DefaultHasher::new();
39    id.hash(&mut hasher);
40    hasher.finish()
41}
42
43#[unsafe(no_mangle)]
44pub extern "C" fn trade_id_to_cstr(trade_id: &TradeId) -> *const c_char {
45    trade_id.as_cstr().as_ptr()
46}
47
48impl From<CString> for TradeId {
49    fn from(value: CString) -> Self {
50        Self::from_bytes(value.as_bytes_with_nul()).unwrap()
51    }
52}
nautilus_model/ffi/identifiers/trade_id.rs

nautilus_model/ffi/identifiers/
trade_id.rs
