Macro aerosol::define_interface

macro_rules! define_interface {
    ($($input:tt)*) => { ... };
}

Define a new interface. Used at any layer of your application to declare what dependencies are required by that part of the program.

Interfaces follow a trait-like syntax, except that they may only contain “getter” methods of a particular form. The names of these methods are for the most part unimportant, but the return types are used to identify dependencies required for a context to implement this interface.

Example

use std::sync::Arc;
 
#[derive(Debug)]
struct Foo;
 
aerosol::define_interface!(
    TestInterface {
        fn foo(&self) -> Arc<Foo>;
    }
);

Interfaces may also specify super-traits, which can themselves be interfaces. Interfaces do not need to explicitly list dependencies if they are transitively required by one of their super-traits, but repeating a dependency will still only require it to be provided once.

Example

#![recursion_limit="128"]
use std::sync::Arc;
 
#[derive(Debug)]
struct Foo;
 
aerosol::define_interface!(
    FooInterface {
        fn foo(&self) -> Arc<Foo>;
    }
);
 
aerosol::define_interface!(
    TestInterface: FooInterface + Clone {}
);