mopa::mopafy! [−] [src]

macro_rules! mopafy {
    ($trait_:ident) => { ... };
    ($trait_:ident, core = $core:ident) => { ... };
    ($trait_:ident, core = $core:ident, alloc = $alloc:ident) => { ... };
}

The macro for implementing all the Any methods on your own trait.

Instructions for use

Make sure your trait extends mopa::Any (e.g. trait Trait: mopa::Any { })
Mopafy your trait (see the next subsection for specifics).
…
Profit!

Mopafication techniques

There are three ways of mopafying traits, depending on what libraries you are using.

If you are a normal person:

trait Trait: mopa::Any { }
mopafy!(Trait);

If you are using libcore but not libstd (#![no_std]) or liballoc, enable the no_std Cargo feature and write this:
```
mopafy!(Trait, core = core);
```
(This is akin to mopafy!(Trait, core = std) if you were using libstd.)

Unlike the other two techniques, this only gets you the &Any and &mut Any methods; the Box<Any> methods require liballoc.
If you are using libcore and liballoc but not libstd (#![no_std]), enable the no_std Cargo feature and write this:
```
mopafy!(Trait, core = core, alloc = alloc);
```
(This is akin to mopafy!(Trait, core = std, alloc = std) if you were using libstd; in fact, the first form is just sugar for this very thing.)

This gets you all the methods.