Macro helix::codegen_class_binding

macro_rules! codegen_class_binding {
    { $class:tt, {
        type: class,
        rust_name: $rust_name:tt,
        ruby_name: { $($ruby_name:tt)* },
        meta: { pub: $pub:tt, reopen: false },
        struct: (),
        methods: [ $($method:tt)* ]
    } } => { ... };
    { $class:tt, {
        type: class,
        rust_name: $rust_name:tt,
        ruby_name: { $($ruby_name:tt)* },
        meta: { pub: $pub:tt, reopen: true },
        struct: (),
        methods: [ $($method:tt)* ]
    } } => { ... };
    { $class:tt, {
        type: class,
        rust_name: $rust_name:tt,
        ruby_name: { $($ruby_name:tt)* },
        meta: { pub: $pub:tt, reopen: $reopen:tt },
        struct: { $($struct:tt)* },
        methods: [ $($method:tt)* ]
    } } => { ... };
}