lix/nix-rust/src/error.rs

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#[derive(Debug)]
pub enum Error {
IOError(std::io::Error),
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Misc(String),
Foreign(CppException),
}
impl From<std::io::Error> for Error {
fn from(err: std::io::Error) -> Self {
Error::IOError(err)
}
}
impl From<Error> for CppException {
fn from(err: Error) -> Self {
match err {
Error::Foreign(ex) => ex,
Error::Misc(s) => unsafe { make_error(&s) },
Error::IOError(err) => unsafe { make_error(&err.to_string()) },
}
}
}
#[repr(C)]
#[derive(Debug)]
pub struct CppException(*const libc::c_void); // == std::exception_ptr*
extern "C" {
fn make_error(s: &str) -> CppException;
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}