1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
mod sqlite;
mod records;
mod ledger;
use sqlite::{SQLiteStore};
use miette::{Diagnostic, Result};
use thiserror::Error;
pub enum Context {
SQLite(SQLiteStore),
}
#[derive(Debug, Diagnostic, Error)]
pub enum ContextError {
#[error("Data storage error")]
DataError(#[from] ::sqlite::Error),
#[error("Int conversion error")]
ConversionError(#[from] std::num::TryFromIntError),
}
impl Default for Context {
fn default() -> Self {
Context::SQLite(SQLiteStore::default())
}
}
pub trait Store {
fn init(&mut self) -> Result<(), ContextError>;
fn get_counter(&self) -> Result<u8, ContextError>;
fn set_counter(&mut self, new_count: u8) -> Result<u8, ContextError>;
}
impl Context {
pub fn unwrap_store(&mut self) -> &mut impl Store {
match self {
Context::SQLite(store) => store,
}
}
pub fn get_store(&self) -> &impl Store {
match self {
Context::SQLite(store) => store,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn context_default() {
let context = Context::default();
let res = match context {
Context::SQLite(_) => true,
};
assert!(res);
}
}
|
