nautilus_model/ffi/identifiers/
account_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::ffi::c_char;
17
18use nautilus_core::ffi::string::cstr_as_str;
19
20use crate::identifiers::AccountId;
21
22/// Returns a Nautilus identifier from a C string pointer.
23///
24/// # Safety
25///
26/// - Assumes `ptr` is a valid C string pointer.
27#[no_mangle]
28pub unsafe extern "C" fn account_id_new(ptr: *const c_char) -> AccountId {
29    AccountId::from(cstr_as_str(ptr))
30}
31
32#[no_mangle]
33pub extern "C" fn account_id_hash(id: &AccountId) -> u64 {
34    id.inner().precomputed_hash()
35}
36
37////////////////////////////////////////////////////////////////////////////////
38// Tests
39////////////////////////////////////////////////////////////////////////////////
40#[cfg(test)]
41mod tests {
42    use std::ffi::{CStr, CString};
43
44    use rstest::rstest;
45
46    use super::*;
47
48    #[rstest]
49    fn test_account_id_round_trip() {
50        let s = "IB-U123456789";
51        let c_string = CString::new(s).unwrap();
52        let ptr = c_string.as_ptr();
53        let account_id = unsafe { account_id_new(ptr) };
54        let char_ptr = account_id.inner().as_char_ptr();
55        let account_id_2 = unsafe { account_id_new(char_ptr) };
56        assert_eq!(account_id, account_id_2);
57    }
58
59    #[rstest]
60    fn test_account_id_to_cstr_and_back() {
61        let s = "IB-U123456789";
62        let c_string = CString::new(s).unwrap();
63        let ptr = c_string.as_ptr();
64        let account_id = unsafe { account_id_new(ptr) };
65        let cstr_ptr = account_id.inner().as_char_ptr();
66        let c_str = unsafe { CStr::from_ptr(cstr_ptr) };
67        assert_eq!(c_str.to_str().unwrap(), s);
68    }
69
70    #[rstest]
71    fn test_account_id_hash_c() {
72        let s1 = "IB-U123456789";
73        let c_string1 = CString::new(s1).unwrap();
74        let ptr1 = c_string1.as_ptr();
75        let account_id1 = unsafe { account_id_new(ptr1) };
76
77        let s2 = "IB-U123456789";
78        let c_string2 = CString::new(s2).unwrap();
79        let ptr2 = c_string2.as_ptr();
80        let account_id2 = unsafe { account_id_new(ptr2) };
81
82        let hash1 = account_id_hash(&account_id1);
83        let hash2 = account_id_hash(&account_id2);
84
85        let s3 = "IB-U987456789";
86        let c_string3 = CString::new(s3).unwrap();
87        let ptr3 = c_string3.as_ptr();
88        let account_id3 = unsafe { account_id_new(ptr3) };
89
90        let hash3 = account_id_hash(&account_id3);
91        assert_eq!(hash1, hash2);
92        assert_ne!(hash1, hash3);
93    }
94}
nautilus_model/ffi/identifiers/account_id.rs

nautilus_model/ffi/identifiers/
account_id.rs
