1.10.0[][src]Struct core::panic::PanicInfo

#[lang = "panic_info"]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

This example panics
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");
Run

Implementations

impl<'a> PanicInfo<'a>[src]

pub fn payload(&self) -> &(dyn Any + Send)[src]

Returns the payload associated with the panic.

This will commonly, but not always, be a &'static str or String.

Examples

This example panics
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");
Run

pub fn message(&self) -> Option<&Arguments>[src]

🔬 This is a nightly-only experimental API. (panic_info_message #66745)

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>[src]

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

This example panics
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");
Run

Trait Implementations

impl<'a> Debug for PanicInfo<'a>[src]

impl<'_> Display for PanicInfo<'_>1.26.0[src]

Auto Trait Implementations

impl<'a> !Send for PanicInfo<'a>

impl<'a> !Sync for PanicInfo<'a>

impl<'a> Unpin for PanicInfo<'a>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.