flashdb_rs/
error.rs

1use thiserror::Error;
2
3use crate::{
4    fdb_err_t, fdb_err_t_FDB_ERASE_ERR, fdb_err_t_FDB_INIT_FAILED, fdb_err_t_FDB_KV_NAME_ERR,
5    fdb_err_t_FDB_KV_NAME_EXIST, fdb_err_t_FDB_NO_ERR, fdb_err_t_FDB_PART_NOT_FOUND,
6    fdb_err_t_FDB_READ_ERR, fdb_err_t_FDB_SAVED_FULL, fdb_err_t_FDB_WRITE_ERR,
7};
8
9type Result<T> = core::result::Result<T, Error>;
10
11#[derive(Error, Debug)]
12pub enum Error {
13    #[error("Ok")]
14    Ok,
15    #[error("Erase operation failed")]
16    EraseError,
17    #[error("Read operation failed")]
18    ReadError,
19    #[error("Write operation failed")]
20    WriteError,
21    #[error("Partition not found")]
22    PartNotFound,
23    #[error("Invalid KV name")]
24    KvNameError,
25    #[error("KV name already exists")]
26    KvNameExist,
27    #[error("Storage full")]
28    SavedFull,
29    #[error("Initialization failed")]
30    InitFailed,
31    #[error("Unknown error")]
32    UnknownError,
33    #[error("Invalid argument")]
34    InvalidArgument,
35    #[error("Key not found")]
36    KeyNotFound,
37    // #[error("Locking error: {0}")]
38    // LockingError(String),
39    #[cfg(feature = "std")]
40    #[error("IO error: {0}")]
41    IO(std::io::Error),
42}
43
44impl Error {
45    pub fn convert(error: fdb_err_t) -> Result<()> {
46        if error == fdb_err_t_FDB_NO_ERR {
47            Ok(())
48        } else {
49            Err(error.into())
50        }
51    }
52
53    pub fn check_and_return<T>(error: fdb_err_t, value: T) -> Result<T> {
54        if error == fdb_err_t_FDB_NO_ERR {
55            Ok(value)
56        } else {
57            Err(error.into())
58        }
59    }
60}
61
62// 为 C 类型实现 Rust 转换
63impl From<fdb_err_t> for Error {
64    fn from(err: fdb_err_t) -> Self {
65        match err {
66            fdb_err_t_FDB_NO_ERR => Error::Ok,
67            fdb_err_t_FDB_ERASE_ERR => Error::EraseError,
68            fdb_err_t_FDB_READ_ERR => Error::ReadError,
69            fdb_err_t_FDB_WRITE_ERR => Error::WriteError,
70            fdb_err_t_FDB_PART_NOT_FOUND => Error::PartNotFound,
71            fdb_err_t_FDB_KV_NAME_ERR => Error::KvNameError,
72            fdb_err_t_FDB_KV_NAME_EXIST => Error::KvNameExist,
73            fdb_err_t_FDB_SAVED_FULL => Error::SavedFull,
74            fdb_err_t_FDB_INIT_FAILED => Error::InitFailed,
75            _ => Error::UnknownError,
76        }
77    }
78}
79
80#[cfg(feature = "std")]
81impl From<std::io::Error> for Error {
82    fn from(err: std::io::Error) -> Self {
83        Self::IO(err)
84    }
85}
86
87impl embedded_io::Error for Error {
88    fn kind(&self) -> embedded_io::ErrorKind {
89        match self {
90            Error::ReadError => embedded_io::ErrorKind::Other,
91            Error::WriteError => embedded_io::ErrorKind::Other,
92            Error::EraseError => embedded_io::ErrorKind::Other,
93            Error::InitFailed => embedded_io::ErrorKind::Other,
94            Error::PartNotFound => embedded_io::ErrorKind::NotFound,
95            Error::KeyNotFound => embedded_io::ErrorKind::NotFound,
96            Error::KvNameError => embedded_io::ErrorKind::InvalidInput,
97            Error::KvNameExist => embedded_io::ErrorKind::AlreadyExists,
98            Error::SavedFull => embedded_io::ErrorKind::OutOfMemory,
99            Error::InvalidArgument => embedded_io::ErrorKind::InvalidInput,
100            Error::UnknownError => embedded_io::ErrorKind::Other,
101            Error::Ok => embedded_io::ErrorKind::Other, // 这是一个特殊情况，通常不应作为错误返回
102            #[cfg(feature = "std")]
103            Error::IO(err) => err.kind().into(),
104        }
105    }
106}
107
108impl embedded_storage::nor_flash::NorFlashError for Error {
109    fn kind(&self) -> embedded_storage::nor_flash::NorFlashErrorKind {
110        match self {
111            // Map specific errors if they correspond to alignment or out-of-bounds issues
112            Error::InvalidArgument => embedded_storage::nor_flash::NorFlashErrorKind::NotAligned,
113            // Most other errors from this library can be categorized as 'Other'
114            _ => embedded_storage::nor_flash::NorFlashErrorKind::Other,
115        }
116    }
117}
flashdb_rs/error.rs

flashdb_rs/
error.rs
