Tricks

This page discusses some tricks that may be helpful when working with external crates.

Wrappers

Sometimes, such as when needing to modify the third party struct definition itself, the wrappers approach can be useful.

Injecting Dart code

The #[frb(dart_code)] feature can be utilized when we want to inject anything into the generated Dart code. For example, we can add a method to an auto-generated Dart class.

Using Rust macros

When we are going to write down code that contains a lot of duplication, Rust macros can often be helpful.

Ignore things

There can be things that are hard to automatically translate (e.g. complex lifetime specifiers, complex generics, ...), and I suggest to put #[frb(ignore)] on them firstly to quickly get a working translation of the third party package. After that, we can remove the ignores and handle them (e.g. by overriding methods).

Using proxies

The proxy feature can be utilized when we need to return a reference type, especially when returning something like the reference to a struct field. Please refer to that page for more details.