A rust attribute macro used to make struct/union and its fields public

How to use

add the dependency to your Cargo.toml

toml [dependencies] public = { git = "https://github.com/yuchunzhou/public", branch = "main" }

then, mark the struct with public attribute macro

```rust

[macro_use]

extern crate public;

[public]

[derive(Debug, Default)]

struct Foo { a: i8, b: char, c: String, } ```

the struct Foo and its fields will be visible within the current crate, of course, you can pass another scope argument to the public attribute macro, like the usage of pub keyword in rust.