Macro dart::export_dart_functions

macro_rules! export_dart_functions {
    ($export_name:ident: $([$name:literal -> $function:ident $(as $a_sync:tt)?]),*$(,)?) => { ... };
    (@, $func:ident, $args:ident) => { ... };
    (@async as ($async_name:ident, $registered_name:literal), $func:ident, $args:ident) => { ... };
}

Creates a Registerer which exports Dart native extension functions.

Usage

• Create your functions.

  use dart::prelude::*;
  use std::ffi::CString;
  fn my_function(args: NativeArguments) {
      args.set_return(DString::new("Hello, World").safe_handle());
  }
  fn my_async_function(message: CObject, _from_port: Port) {
      if let CObject::SendPort(port) = message {
          let port = unsafe { Port::from_port(port.0.id) }.unwrap();
          port.post_cobject(CObject::String(CString::new("Hello, Async World").unwrap()));
      } else {
          panic!("Didn't get a port to reply!");
      }
  }

• Export your functions using the syntax

  // Creates a set of exports called `my_exports`.
  dart::export_dart_functions!(my_exports:
      ["function1" -> my_function],
      ["function2service_port" -> my_async_function as async]
  );