convert-chain

A tiny crate for chain type converter. There is only one macro convert_chian in it

Assuming there are 3 sturct with following relationship.

struct A;
struct B;
struct C;

impl From<B> for A { ... }
impl From<C> for B { ... }

You can use the macro to directly convert an expression or create a closure for the convert.

• Directly convert

  let c = C;
  let a = convert_chain!(c; B, A);
  

• Create a closure

  let c = C;
  let f = convert_chain!(B, A);
  let a = f(c);
  

Both of the above methods are equivalent to

let c = C;
let a = A::from(B::from(c));