1 unstable release
0.1.0 | Jul 30, 2024 |
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#1554 in Procedural macros
76 downloads per month
Used in 3 crates
7KB
52 lines
Syncify
Two functions for the price of one: a simplistic rust macro for writing async functions once and getting both the async version and a sync version that strips all async
function modifiers and all .await
suffixes.
Status: it works, but this is not intended to be a high-quality, general-purpose crate. The macro error messages are bad, the features are barebones. But it does what we need it to do, and that suffices.
Usage
Place the #[syncify(name_of_sync_mod_variant)]
on a mod
item. Annotate all use
items inside that mod
that should be different in the sync version with #[syncify_replace(<alternate-use-item>)]
.
Example:
use syncify::syncify;
use syncify::syncify_replace;
#[syncify(greet_sync)]
mod greet {
#[syncify_replace(use crate::speaking_sync::speak;)] // A sync function for speaking.
use crate::speaking::speak; // An async function for speaking.
pub async fn do_greet(name: &str) -> usize {
speak(name).await;
return name.len();
}
}
Expands to:
use syncify::syncify;
use syncify::syncify_replace;
mod greet {
use crate::speaking::speak; // An async function for speaking.
pub async fn do_greet(name: &str) -> usize {
speak(name).await;
return name.len();
}
}
mod greet_sync {
use crate::speaking_sync::speak; // A sync function for speaking.
pub fn do_greet(name: &str) -> usize {
speak(name);
return name.len();
}
}
Dependencies
~245–690KB
~17K SLoC