This crate exports two functions, call_with_repeat_continuation and
call_with_escape_continuation. The former behaves similarly to C's setjmp/longjmp,
and the latter gives access to C++-style exceptions within a local scope.
Honestly, I wanted to see if this was possible in safe Rust. It turns out, in the presence
of std and panic = "unwind", it is, by using catch_unwind and resume_unwind! As
per The Rustonomicon, unwinding via
the panic mechanism is likely to be wildly inefficient compared to exceptions in
languages like C++ or Java. As a result, this crate is not suitable for high-performance
use, and is frankly not useful for anything in particular. It's kinda cool, though.
This code is released under the MIT license, as it appears in LICENSE.md or at the Open Source Initiative. In my mind, that means I don't care what you do with the code and that I don't have any obligation to support you in so doing. That said, if you do something cool, I'd love to hear about it!