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use std::ops::{Deref, DerefMut};
use defines::AfError;
use std::error::Error;
use std::sync::RwLock;
pub type ErrorCallback = fn(AfError);
pub struct Callback {
cb: ErrorCallback,
}
impl Callback {
pub fn new(callback: ErrorCallback) -> Self {
Callback {cb: callback}
}
pub fn call(&self, error_code: AfError) {
(self.cb)(error_code)
}
}
pub fn handle_error_general(error_code: AfError) {
match error_code {
AfError::SUCCESS => {},
_ => panic!("Error message: {}", error_code.description()),
}
}
lazy_static! {
static ref ERROR_HANDLER_LOCK: RwLock< Callback > =
RwLock::new(Callback::new(handle_error_general));
}
#[allow(unused_must_use)]
pub fn register_error_handler(cb_value: Callback) {
let mut gaurd = match ERROR_HANDLER_LOCK.write() {
Ok(g) => g,
Err(_)=> panic!("Failed to acquire lock to register error handler"),
};
*gaurd.deref_mut() = cb_value;
}
#[allow(non_snake_case)]
pub fn HANDLE_ERROR(error_code: AfError) {
let gaurd = match ERROR_HANDLER_LOCK.read() {
Ok(g) => g,
Err(_)=> panic!("Failed to acquire lock while handling FFI return value"),
};
(*gaurd.deref()).call(error_code);
}