delegatemethod-rs

Delegate method calls to a field.

Examples

Suppose you have a struct called Inner, with methods fn1 and fn2.

You have another struct called Outer with fields using Inner as type.

You can use delegate_method to forward some method implementations to the fields.

```rust #[derive(Copy, Clone)] struct Outer { inner1: Inner, inner2: Inner, }

impl Outer {
    delegate_method! {
        // the <as FieldType> is optional below
        // it is only used for methods without self or &self or &mut self argument
        inner as Inner:
        pub fn fn1();

        // here comes another group, using another field.
        inner2 as Inner:
        pub fn fn2() -> usize;
    }
}

```

Acknowledgements

• The idea comes from Tommy McGuire's blog, but adjusted to match the Rust syntax better.