mirror of
https://github.com/teloxide/teloxide.git
synced 2024-12-23 06:51:01 +01:00
124 lines
3.2 KiB
Markdown
124 lines
3.2 KiB
Markdown
# Code style
|
|
This is a description of a coding style that every contributor must follow. Please, read the whole document before you start pushing code.
|
|
|
|
## Generics
|
|
Generics are always written with `where`.
|
|
|
|
Bad:
|
|
|
|
```rust
|
|
pub fn new<N: Into<String>,
|
|
T: Into<String>,
|
|
P: Into<InputFile>,
|
|
E: Into<String>>
|
|
(user_id: i32, name: N, title: T, png_sticker: P, emojis: E) -> Self { ... }
|
|
```
|
|
|
|
Good:
|
|
|
|
```rust
|
|
pub fn new<N, T, P, E>(user_id: i32, name: N, title: T, png_sticker: P, emojis: E) -> Self
|
|
where
|
|
N: Into<String>,
|
|
T: Into<String>,
|
|
P: Into<InputFile>,
|
|
E: Into<String> { ... }
|
|
```
|
|
|
|
## Comments
|
|
1. Comments must describe what your code does and mustn't describe how your code does it and bla-bla-bla. Be sure that your comments follow the grammar, including punctuation, the first capital letter and so on.
|
|
|
|
Bad:
|
|
|
|
```rust
|
|
/// this function make request to telegram
|
|
pub fn make_request(url: &str) -> String { ... }
|
|
```
|
|
|
|
Good:
|
|
|
|
```rust
|
|
/// This function makes a request to Telegram.
|
|
pub fn make_request(url: &str) -> String { ... }
|
|
```
|
|
|
|
2. Also, link resources in your comments when possible:
|
|
|
|
```rust
|
|
/// Download a file from Telegram.
|
|
///
|
|
/// `path` can be obtained from the [`Bot::get_file`].
|
|
///
|
|
/// To download into [`AsyncWrite`] (e.g. [`tokio::fs::File`]), see
|
|
/// [`Bot::download_file`].
|
|
///
|
|
/// [`Bot::get_file`]: crate::bot::Bot::get_file
|
|
/// [`AsyncWrite`]: tokio::io::AsyncWrite
|
|
/// [`tokio::fs::File`]: tokio::fs::File
|
|
/// [`Bot::download_file`]: crate::Bot::download_file
|
|
#[cfg(feature = "unstable-stream")]
|
|
pub async fn download_file_stream(
|
|
&self,
|
|
path: &str,
|
|
) -> Result<impl Stream<Item = Result<Bytes, reqwest::Error>>, reqwest::Error>
|
|
{
|
|
download_file_stream(&self.client, &self.token, path).await
|
|
}
|
|
```
|
|
|
|
## Use Self where possible
|
|
Bad:
|
|
|
|
```rust
|
|
impl ErrorKind {
|
|
fn print(&self) {
|
|
ErrorKind::Io => println!("Io"),
|
|
ErrorKind::Network => println!("Network"),
|
|
ErrorKind::Json => println!("Json"),
|
|
}
|
|
}
|
|
```
|
|
|
|
Good:
|
|
```rust
|
|
impl ErrorKind {
|
|
fn print(&self) {
|
|
Self::Io => println!("Io"),
|
|
Self::Network => println!("Network"),
|
|
Self::Json => println!("Json"),
|
|
}
|
|
}
|
|
```
|
|
|
|
<details>
|
|
<summary>More examples</summary>
|
|
|
|
Bad:
|
|
|
|
```rust
|
|
impl<'a> AnswerCallbackQuery<'a> {
|
|
pub(crate) fn new<C>(bot: &'a Bot, callback_query_id: C) -> AnswerCallbackQuery<'a>
|
|
where
|
|
C: Into<String>, { ... }
|
|
```
|
|
|
|
Good:
|
|
|
|
```rust
|
|
impl<'a> AnswerCallbackQuery<'a> {
|
|
pub(crate) fn new<C>(bot: &'a Bot, callback_query_id: C) -> Self
|
|
where
|
|
C: Into<String>, { ... }
|
|
```
|
|
</details>
|
|
|
|
## Naming
|
|
1. Avoid unnecessary duplication (`Message::message_id` -> `Message::id` using `#[serde(rename = "message_id")]`).
|
|
2. Use a generic parameter name `S` for streams, `Fut` for futures, `F` for functions (where possible).
|
|
|
|
## Deriving
|
|
1. Derive `Copy`, `Eq`, `Hash`, `PartialEq`, `Clone`, `Debug` for public types when possible (note: if the default `Debug` implementation is weird, you should manually implement it by yourself).
|
|
2. Derive `Default` when there is an algorithm to get a default value for your type.
|
|
|
|
## Misc
|
|
1. Use `Into<...>` only where there exists at least one conversion **and** it will be logically to use.
|