byodb_rust/core/
error.rs

1//! Errors returned by functions in the [`crate::core`] module.
2
3use std::io;
4
5/// An error encountered when interacting with a B+ tree.
6pub type TreeError = NodeError;
7
8/// An error encountered when interacting with a B+ tree node.
9#[derive(thiserror::Error, Debug)]
10pub enum NodeError {
11    /// Key size exceeds maximum limit.
12    #[error("Key size exceeds maximum limit: key length {0} exceeds MAX_KEY_SIZE")]
13    MaxKeySize(usize), // usize is key length
14    /// Value size exceeds maximum limit.
15    #[error("Value size exceeds maximum limit: value length {0} exceeds MAX_VALUE_SIZE")]
16    MaxValueSize(usize), // usize is value length
17    /// Unexpected node type. This represents data corruption.
18    #[error("Unexpected node type: {0:#b}")]
19    UnexpectedNodeType(u16), // u16 is the node type
20    /// Key already exists.
21    #[error("Key already exists")]
22    AlreadyExists,
23    /// Key not found.
24    #[error("Key not found")]
25    KeyNotFound,
26}
27
28/// An error encountered when interacting with the memory map.
29#[derive(thiserror::Error, Debug)]
30pub enum MmapError {
31    /// An IO error encountered when interacting with the memory-mapped file.
32    #[error(transparent)]
33    IOError(#[from] io::Error),
34    /// The file is invalid and cannot be memory-mapped.
35    #[error("Invalid file: {0}")]
36    InvalidFile(String),
37}
byodb_rust/core/error.rs

byodb_rust/core/
error.rs
