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#![feature(fnbox)]
#[macro_use]
extern crate log;
extern crate libc;
extern crate context;
use std::any::Any;
use std::error;
use std::fmt::{self, Display};
use std::panic;
use std::thread;
pub use options::Options;
pub mod asymmetric;
mod options;
pub type Result<T> = ::std::result::Result<T, Error>;
pub enum Error {
Panicked,
Panicking(Box<Any + Send>),
}
impl fmt::Debug for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
&Error::Panicked => write!(f, "Panicked"),
&Error::Panicking(ref err) => {
let msg = match err.downcast_ref::<&'static str>() {
Some(s) => *s,
None => {
match err.downcast_ref::<String>() {
Some(s) => &s[..],
None => "Box<Any>",
}
}
};
write!(f, "Panicking({})", msg)
}
}
}
}
impl Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{}", error::Error::description(self))
}
}
impl error::Error for Error {
fn description(&self) -> &str {
match self {
&Error::Panicked => "Panicked",
&Error::Panicking(..) => "Panicking(..)",
}
}
}
unsafe fn try<R, F: FnOnce() -> R>(f: F) -> thread::Result<R> {
let mut f = Some(f);
let f = &mut f as *mut Option<F> as usize;
panic::catch_unwind(move || (*(f as *mut Option<F>)).take().unwrap()())
}