use std::any::Any;
use std::result;



#[derive(Debug)]
pub enum ZoodexError {
  CollectionFileReadError,
}

pub type Result<Success> = result::Result<Success, ZoodexError>;

impl From<Box<dyn Any + Send>> for ZoodexError {
  fn from(error: Box<dyn Any + Send>) -> Self {
    *error.downcast().unwrap()
  }
}

macro_rules! async_result_context {(
  $future: expr
  $(, ok => $on_success: expr)?
  $(, err => $on_failure: expr)?$(,)?
) => {
  #[allow(unreachable_patterns)]
  match $future.await {
    $(Ok(value) => $on_success(value),)?
    Ok(_) => {},
    $(Err(error) => $on_failure(error),)?
    Err(_) => {},
  }
}}



pub(crate) use async_result_context;