Function print_callback

example/callback.cc:37–43

A function to be called from Wasm code.

// A function to be called from Wasm code.
auto print_callback(
  const wasm::vec<wasm::Val>& args, wasm::vec<wasm::Val>& results
) -> wasm::own<wasm::Trap> {
  std::cout << "Calling back..." << std::endl << "> " << args[0] << std::endl;
  results[0] = args[0].copy();
  return nullptr;
}


// A function closure.