Trait melib::backends::BackendOp

source · 
pub trait BackendOp: Debug + Send {
    // Required method
    fn as_bytes(&mut self) -> ResultFuture<Vec<u8>>;
}
Expand description

A BackendOp manages common operations for the various mail backends. They only live for the duration of the operation. They are generated by the operation method of Mailbackend trait.

§Motivation

We need a way to do various operations on individual mails regardless of what backend they come from (eg local or imap).

§Creation

ⓘ
/* Create operation from Backend */

let op = backend.operation(message.hash(), mailbox.hash());

§Example

ⓘ
use melib::backends::{BackendOp};
use melib::Result;
use melib::{Envelope, Flag};

#[derive(Debug)]
struct FooOp {}

impl BackendOp for FooOp {
    fn as_bytes(&mut self) -> Result<&[u8]> {
        unimplemented!()
    }
}

let operation = Box::new(FooOp {});

Required Methods§

source

fn as_bytes(&mut self) -> ResultFuture<Vec<u8>>

Implementors§