Stream: general

Topic: [Need Help] Ruby Wasm Component get_func handle

view this post on Zulip Teleyos (Jul 01 2026 at 20:06):

Hi, i have a game.wasm component.
If i do wasm-tools component wit game.wasm i get 

package root:component;

world root {
  export teleyos:connect4/types@0.0.1;
}
package teleyos:connect4@0.0.1 {
  interface types {
    enum error-code {
      col-not-empty,
      out-of-bound,
    }

    type error = tuple<error-code, string>;

    type play-result = result<u8, error>;

    enum player {
      first,
      second,
    }

    type grid = list<option<player>>;

    type winner = player;

    resource state {
      constructor();
      play: func(index: s8) -> play-result;
      check-finished: func() -> tuple<bool, option<winner>>;
    }
  }
}

I want the name or path that i need to give to give to get_func in order to get the check_finished Func.

I tried a lot of possibilities but i struggle to find which path to give because it's in root > teleyos:connect4@0.0.1 > types > state > check-finished and i don't know how to articulate that.

I have this for now :

require 'wasmtime'

engine = Wasmtime::Engine.new
component = Wasmtime::Component::Component.from_file(engine, "./game.wasm")
store = Wasmtime::Store.new(engine, {})
linker = Wasmtime::Component::Linker.new(engine)

instance = linker.instantiate(store, component)

check_finished_func = instance.get_func(["root", "teleyos:connect4@0.0.1","types","state","check-finished"])

if (check_finished_func == nil) then
  puts "didn't find function"
  puts check_finished_func
  exit
end

Thanks a lot for your time and your pieces of advice (trying to not use ai at all for this project)

view this post on Zulip Teleyos (Jul 04 2026 at 19:12):

Update, fixed with this code.

Last updated: Jul 29 2026 at 05:03 UTC