document try_option_send_error!() macro

src/macros.rs

@@ -146,7 +146,30 @@ macro_rules! try_send {
 	};
 }
 
-/// Unwrap a `Option<T>`, send a message if it's None.
+/// Unarap an `Option` and return a custom message for the client if it is None.
+///
+/// # Arguments
+///
+/// * `$i:ident` : `mio::Token` client identifier
+/// * `$e:expr` : Expression to evaluate, must return `Option<T>`
+/// * `$($arg:tt)*` : Format string and parameters (like `println!()`)
+///
+/// # Example
+///
+/// ```
+/// use mio::Token;
+/// use rude::queue::SendQueue;
+/// use rude::option_send;
+///
+/// fn check_file() -> SendQueue {
+///     let token = Token(12);
+///     let option = Some(4);
+///     let send = option_send!(token, option, "Option unwrapped to None");
+///     SendQueue::ok(token)
+/// }
+///
+/// # assert_eq!(check_file().0[0].1, SendQueue::ok(Token(12)).0[0].1);
+/// ```
 #[macro_export]
 macro_rules! option_send {
 	($i:ident, $e:expr, $($arg:tt)*) => {
@@ -161,7 +184,31 @@ macro_rules! option_send {
 	};
 }
 
-/// Unwrap a `Result<Option<T>, E>`, log message if it's error or none
+/// Unwrap a `Result<Option<T>, E>` and for Err or None, log a message and send
+/// a generic error message to the client.
+///
+/// # Arguments
+///
+/// * `$i:ident` : `mio::Token` client identifier
+/// * `$e:expr` : Expression to evaluate, must return `Result<T, Box<dyn Error>>`
+///
+/// # Example
+///
+/// ```
+/// use std::error::Error;
+/// use mio::Token;
+/// use rude::queue::SendQueue;
+/// use rude::try_option_send_error;
+///
+/// fn tor() -> SendQueue {
+///     let token = Token(12);
+///     let tor: Result<Option<usize>, Box<dyn Error>> = Ok(Some(42));
+///     let file = try_option_send_error!(token, tor);
+///     SendQueue::ok(token)
+/// }
+///
+/// # assert_eq!(tor().0[0].1, SendQueue::ok(Token(12)).0[0].1);
+/// ```
 #[macro_export]
 macro_rules! try_option_send_error {
 	($i:ident, $e:expr) => {