diesel/mysql_like/connection/
error_information.rs

1#![allow(unsafe_code)] // module uses ffi
2use core::ffi::{CStr, c_char};
3
4use crate::result::{DatabaseErrorInformation, SqlState};
5
6pub(super) struct MysqlLikeErrorInformation {
7    pub(super) message: String,
8    pub(super) sqlstate: Option<SqlState>,
9}
10
11/// Reads the result of `mysql_sqlstate` or `mysql_stmt_sqlstate`.
12///
13/// # Safety
14///
15/// `sqlstate` must be null or point to a NUL terminated buffer that stays
16/// unchanged for the duration of the call.
17pub(super) unsafe fn sqlstate_from_ptr(sqlstate: *const c_char) -> Option<SqlState> {
18    if sqlstate.is_null() {
19        return None;
20    }
21    // SAFETY: non-null, and the caller guarantees NUL termination and stability.
22    let bytes = unsafe { CStr::from_ptr(sqlstate) }.to_bytes();
23    <[u8; 5]>::try_from(bytes).ok().and_then(SqlState::new)
24}
25
26impl DatabaseErrorInformation for MysqlLikeErrorInformation {
27    fn message(&self) -> &str {
28        &self.message
29    }
30
31    fn details(&self) -> Option<&str> {
32        None
33    }
34
35    fn hint(&self) -> Option<&str> {
36        None
37    }
38
39    fn table_name(&self) -> Option<&str> {
40        None
41    }
42
43    fn column_name(&self) -> Option<&str> {
44        None
45    }
46
47    fn constraint_name(&self) -> Option<&str> {
48        None
49    }
50
51    fn statement_position(&self) -> Option<i32> {
52        None
53    }
54
55    fn sqlstate(&self) -> Option<SqlState> {
56        self.sqlstate
57    }
58}
diesel/mysql_like/connection/error_information.rs

diesel/mysql_like/connection/
error_information.rs
