1 unstable release
Uses new Rust 2024
| new 0.1.0 | May 2, 2025 |
|---|
#861 in Rust patterns
5KB
trycatch
Throw and catch exceptions in rust.
(Please don't use this crate.)
use trycatch::{throw, try_catch};
fn divide(x: u32, y: u32) -> u32 {
if y == 0 {
throw!("y cannot be zero");
}
return x / y;
}
fn main() {
try_catch! {
try {
divide(10, 0);
} catch (e) {
println!("Error: {e}");
}
};
}
Macro expansion
#![feature(prelude_import)]
#![allow(clippy::needless_return)]
#[prelude_import]
use std::prelude::rust_2024::*;
#[macro_use]
extern crate std;
use trycatch::{throw, try_catch};
fn divide(x: u32, y: u32) -> u32 {
if y == 0 {
{
::core::panicking::panic_fmt(format_args!("y cannot be zero"));
};
}
return x / y;
}
fn main() {
let original_hook = std::panic::take_hook();
std::panic::set_hook(Box::new(|_| {}));
match std::panic::catch_unwind(|| {
divide(10, 0);
}) {
Err(e) => {
if let Some(&e) = e.downcast_ref::<&str>() {
{
{
::std::io::_print(format_args!("Error: {0}\n", e));
};
}
} else {
::core::panicking::panic("internal error: entered unreachable code");
}
}
Ok(v) => v,
}
std::panic::set_hook(original_hook);
}