Struct std::panic::PanicInfo
pub struct PanicInfo<'a> { /* fields omitted */ }
A struct providing information about a panic.
PanicInfo structure is passed to a panic hook set by the set_hook function.
Examples
use std::panic;
panic::set_hook(Box::new(|panic_info| {
if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
println!("panic occurred: {:?}", s);
} else {
println!("panic occurred");
}
}));
panic!("Normal panic");Implementations
impl<'a> PanicInfo<'a>
pub fn payload(&self) -> &(dyn Any + Send + 'static)
Returns the payload associated with the panic.
This will commonly, but not always, be a &'static str or String.
Examples
use std::panic;
panic::set_hook(Box::new(|panic_info| {
if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
println!("panic occurred: {:?}", s);
} else {
println!("panic occurred");
}
}));
panic!("Normal panic");pub fn message(&self) -> Option<&Arguments<'_>>
If the panic! macro from the core crate (not from std) was used with a formatting string and some additional arguments, returns that message ready to be used for example with fmt::write
pub fn location(&self) -> Option<&Location<'_>>
Returns information about the location from which the panic originated, if available.
This method will currently always return Some, but this may change in future versions.
Examples
use std::panic;
panic::set_hook(Box::new(|panic_info| {
if let Some(location) = panic_info.location() {
println!("panic occurred in file '{}' at line {}",
location.file(),
location.line(),
);
} else {
println!("panic occurred but can't get location information...");
}
}));
panic!("Normal panic");Trait Implementations
impl<'a> Debug for PanicInfo<'a>
pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
impl<'_> Display for PanicInfo<'_>
Auto Trait Implementations
impl<'a> !RefUnwindSafe for PanicInfo<'a>
impl<'a> !Send for PanicInfo<'a>
impl<'a> !Sync for PanicInfo<'a>
impl<'a> Unpin for PanicInfo<'a>
impl<'a> !UnwindSafe for PanicInfo<'a>
Blanket Implementations
impl<T> From<T> for T
pub fn from(t: T) -> T
Performs the conversion.
pub fn into(self) -> U
Performs the conversion.
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/panic/struct.PanicInfo.html